{"slug":"elementalsouls-hunt-exceptional-conditions","name":"hunt-exceptional-conditions","description":"Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack.","long_description":"---\nname: hunt-exceptional-conditions\ndescription: \"Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack.\"\nreport_count: 0\nsources: hackerone_public\n---\n\n# HUNT-EXCEPTIONAL-CONDITIONS — Verbose Errors / Fail-Open (A10:2025)\n\n## What actually pays\n\nWell-built apps catch errors and return a clean, generic message. A broken app,\nwhen handed input it didn't expect, throws an unhandled exception and renders a\n**developer error page** straight to the client — leaking the stack trace, the\nORM/query internals, server-side file paths, and framework/library versions.\nThat disclosure is the finding (and it arms SQLi/RCE/path attacks next).\n\n## Recon\n\nAny endpoint that parses input is a candidate; the richest are:\n\n```\nJSON APIs that expect typed fields:  POST /api/* with {numbers, ids, enums}\nEndpoints with numeric/id path or query params:  /item/{id}, ?page=, ?quantity=\nSearch / filter / sort params\nFile or content-type sensitive uploads\n```\n\n## Attack — send what the code didn't anticipate\n\nTake a known-good request and break ONE assumption at a time:\n\n- **Wrong type:** a field the app expects to be a number/string is sent as an\n  array or object — `{\"rating\":\"x\",\"comment\":[1,2,3]}`, `{\"quantity\":{}}`.\n- **Malformed body:** truncated/!invalid JSON, an unterminated string, a stray\n  brace, a wrong/missing Content-Type.\n- **Boundary/oversized:** a very long string, a huge/negative/overflow number.\n- **Null byte / control chars** embedded in a value.\n\n```\nPOST /api/Feedbacks   {\"rating\":\"notanumber\",\"comment\":[1,2,3]}\nGET  /item/' OR /item/%00   (also exercises the error path)\n```\n\nWatch the RESPONSE BODY, not just the status: a 500 (or even a 200/400) whose\nbody contains a stack trace or framework error page is the signal.\n\n## What counts as a leak (the success signal)\n\nA finding is confirmed when the response body contains a cross-framework error-disclosure signature:\n\n- **Node/Express + Sequelize:** `SequelizeDatabaseError`, `node_modules/sequelize`,\n  a JS stack with internal paths.\n- **PHP:** `<b>Warning</b> ... /var/www/.../file.php on line N`.\n- **Python:** `Traceback (most recent call last)`, `werkzeug.exceptions`.\n- **Java:** `at com.app.Foo(Foo.java:42)` stack frames.\n- **.NET:** `Server Error in '/' Application`, a `[System.XxxException: ...]` YSOD.\n\nA clean JSON error (`{\"error\":\"Invalid input\"}`) with no internals is NOT a\nfinding — that's correct handling. Disclosure of internal structure is.\n\n## Validation discipline\n\n- Capture the exact leaked artifact (path, ORM class, version, stack frame) —\n  that's the evidence. \"It returned 500\" alone is not disclosure.\n- Note what the leak enables next (e.g. a disclosed SQL error → hunt-sqli; a\n  disclosed absolute path → hunt-lfi).\n","tagline":"Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, li","category":"automation","tags":["agent-skill"],"author":"elementalsouls","verified":false,"attribution":{"status":"registry_indexed","statusLabel":"Registry indexed","shortLabel":"REGISTRY INDEXED","sourceLabel":"recursive skill source sync","sourceDetail":"elementalsouls/Claude-BugHunter","creatorName":"elementalsouls","creatorUrl":"https://github.com/elementalsouls","sourceUrl":"https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions","indexedBy":"OpenAgentSkill community index","claimUrl":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions#claim-this-skill","claimCta":"Claim this skill","trustNote":"This listing was indexed from public sources and is not marked official until a maintainer claim is approved.","publicNote":"Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals."},"stats":{"stars":4307,"forks":654,"verified_installs":0,"successful_runs":0,"total_outcomes":0,"rating":0,"review_count":0,"quality_score":48.54},"quality":{"score":83,"tier":"strong","label":"Strong","summary":"Solid option that is likely worth shortlisting for production workflows.","signals":[{"label":"GitHub stars","value":"4.3K","tone":"positive"},{"label":"Freshness","value":"2d ago","tone":"positive"},{"label":"Install ready","value":"Yes","tone":"positive"},{"label":"License","value":"MIT","tone":"neutral"}],"warnings":["The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration."]},"trust":{"version":"trust-score-v5","score":66,"base_score":74,"outcome_confidence":0,"tier":"review","label":"Sandbox only","summary":"Useful candidate with missing or mixed trust signals. 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network or browser access","Permission surface: filesystem or document access, network or browser access"]},"outcomeEvidence":{"total":0,"successes":0,"failures":0,"notRelevant":0,"successRate":null,"installAttempts":0,"riskBlocked":0,"setupRequired":0,"installSuccessRate":null,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"recentSuccessRate":null,"recentFailureRate":null,"uniqueAgents":0,"agentProvenScore":0,"agentProvenLabel":"Needs first agent run","lastOutcomeAt":null,"label":"No agent outcome data yet"},"autoInstall":{"allowed":false,"sandboxRequired":true,"policy":"human_review_before_install","reason":"Human review or sandbox validation is required before automatic installation."},"bestFor":["automation","agent-skill"],"doNotUseFor":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"knownRisks":["The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access","Permission surface: filesystem or document access, network or browser access"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"outcome_stats":null,"safety":{"score":59,"level":"review_before_install","label":"Review before install","safety_tier":{"tier":"reviewed","label":"Reviewed with permission notes","badge":"REVIEWED","summary":"Usable candidate, but the agent should surface permission and audit notes before installation.","recommended_action":"Require human approval before installing into a real workspace.","auto_install_policy":"review","reasons":["Permission surface may require sandboxing","59/100 agent safety score"]},"auto_install_allowed":false,"human_review_required":true,"blocked":false,"audit_risk":"needs_review","permission_hints":[{"id":"browser","label":"Browser automation","reason":"Skill may drive a browser or interact with web pages.","severity":"medium"},{"id":"network","label":"Network access","reason":"Skill likely fetches remote pages, APIs, repositories, or external services.","severity":"medium"},{"id":"filesystem","label":"Filesystem access","reason":"Skill may read or write project files, documents, generated artifacts, or local workspace state.","severity":"medium"},{"id":"database","label":"Database access","reason":"Skill may inspect schemas, query databases, or work with persistent stores.","severity":"medium"}],"policy_warnings":["Permission surface may require sandboxing"],"constraints_applied":{"max_risk":"medium","needs_install_command":true,"min_stars":0}},"safety_gate":{"tier":"reviewed","label":"Reviewed with permission notes","badge":"REVIEWED","auto_install_policy":"review","auto_install_allowed":false,"blocked":false,"human_review_required":true,"recommended_action":"Require human approval before installing into a real workspace.","reasons":["Permission surface may require sandboxing","59/100 agent safety score"]},"eval":{"version":"openagentskill-skill-eval-v1","status":"review","score":74,"risk_level":"medium","decision":{"recommendation":"manual_review","reason":"Require human approval before installing into a real workspace.","auto_install_allowed":false,"policy":"review","human_review_required":true},"blockers":[],"warnings":["Task fit: Task fit is weak; compare alternatives before selecting.","Trust score: Good trust signals with a few areas worth checking before rollout.","Audit score: Needs review","Agent safety gate: Usable candidate, but the agent should surface permission and audit notes before installation.","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context","Permission surface: filesystem or document access, network or browser access","Permission surface may require sandboxing","The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","No mention of responsible disclosure or rate limiting to avoid harming target systems.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access"],"validation_plan":["Inspect repository, README/SKILL.md, license, and recent commits before production use.","Install in an isolated workspace or sandbox with no production secrets available.","Run the smallest representative task and record files touched, commands run, network access, and outputs.","Compare the selected skill against at least one alternative when the eval status is review or failed.","Promote only after the agent reports a successful verification result and unresolved warnings are accepted."],"checks":[{"id":"task_fit","label":"Task fit","status":"warn","score":70,"required_for_auto_install":true,"detail":"Task fit is weak; compare alternatives before selecting.","evidence":["Evaluate hunt-exceptional-conditions before installing it in an agent workflow","automation","Browser automation workflows; Claude Code teams; teams that value GitHub adoption signals"]},{"id":"install_path","label":"Install path","status":"pass","score":92,"required_for_auto_install":true,"detail":"Install handoff is available.","evidence":["npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions"]},{"id":"install_safety","label":"Install command safety","status":"pass","score":92,"required_for_auto_install":true,"detail":"standard package or runtime install path","evidence":["npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions"]},{"id":"trust_score","label":"Trust score","status":"warn","score":74,"required_for_auto_install":true,"detail":"Good trust signals with a few areas worth checking before rollout.","evidence":["Strong shortlist","4.3K GitHub stars","MIT"]},{"id":"audit_score","label":"Audit score","status":"warn","score":83,"required_for_auto_install":true,"detail":"Needs review","evidence":["Permission surface may require sandboxing"]},{"id":"agent_safety_gate","label":"Agent safety gate","status":"warn","score":59,"required_for_auto_install":true,"detail":"Usable candidate, but the agent should surface permission and audit notes before installation.","evidence":["Require human approval before installing into a real workspace.","Permission surface may require sandboxing"]},{"id":"readme_skillmd_completeness","label":"README/SKILL.md completeness","status":"warn","score":76,"required_for_auto_install":false,"detail":"Public metadata needs stronger README/SKILL.md context","evidence":["Usable metadata, review docs"]},{"id":"license_clarity","label":"License clarity","status":"pass","score":86,"required_for_auto_install":true,"detail":"MIT","evidence":["MIT"]},{"id":"recent_maintenance","label":"Recent maintenance","status":"pass","score":100,"required_for_auto_install":false,"detail":"2d since push","evidence":["2d since push"]},{"id":"permission_surface","label":"Permission surface","status":"warn","score":60,"required_for_auto_install":true,"detail":"filesystem or document access, network or browser access","evidence":["Browser automation: medium","Network access: medium","Filesystem access: medium"]},{"id":"alternatives","label":"Alternatives available","status":"info","score":55,"required_for_auto_install":false,"detail":"No close alternatives were found in the current shortlist.","evidence":[]}],"endpoints":{"web":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions/evals","api":"/api/agent/evals?slug=elementalsouls-hunt-exceptional-conditions","text":"/api/agent/evals?slug=elementalsouls-hunt-exceptional-conditions&format=text"}},"agent_readable_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"elementalsouls-hunt-exceptional-conditions","name":"hunt-exceptional-conditions","description":"Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack.","category":"automation","url":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions","repository":"https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions","github_repo":"elementalsouls/Claude-BugHunter"},"suited_tasks":["Browser automation workflows","Claude Code teams","teams that value GitHub adoption signals","Navigate pages","Click and type safely","Check visual and DOM state","Search sources","Extract claims"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions","ready":true,"targets":[{"id":"openagentskill-cli","label":"CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add elementalsouls-hunt-exceptional-conditions"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"hunt-exceptional-conditions\" agent skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"claude-code","label":"Claude Code","kind":"agent-prompt","value":"Add \"hunt-exceptional-conditions\" as a Claude Code skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"hunt-exceptional-conditions\" from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."}],"handoff_url":"https://www.openagentskill.com/api/skills/elementalsouls-hunt-exceptional-conditions/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/elementalsouls-hunt-exceptional-conditions"},"trust":{"score":74,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"4.3K GitHub stars","repoActivity":"4.3K stars, 654 forks","lastPushed":"2d since push","license":"MIT","repository":"https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions","install":"npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions","installSafety":"standard package or runtime install path","permissionSurface":"filesystem or document access, network or browser access","documentation":"Usable metadata, review docs","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["automation","agent-skill"],"known_risks":["The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access","Permission surface: filesystem or document access, network or browser access"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"audit":{"score":83,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Permission surface may require sandboxing","The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","No mention of responsible disclosure or rate limiting to avoid harming target systems.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access","Permission surface: filesystem or document access, network or browser access"]},"safety_gate":{"tier":"reviewed","label":"Reviewed with permission notes","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Require human approval before installing into a real workspace."},"quality":{"score":83,"label":"Strong"},"supply":{"track":"Coding and developer agents","scenario":"Database and SQL","maintenance":"2d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","No OpenAgentSkill engagement data yet","Permission surface may require sandboxing","No mention of responsible disclosure or rate limiting to avoid harming target systems.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access"],"agent_contract":{"task_input":"Use hunt-exceptional-conditions in an agent workflow","recommended_action":"Require human approval before installing into a real workspace.","install_policy":"review","minimum_review_before_use":["Trust: 74/100 Strong shortlist","Audit: 83/100 Needs review","Safety: 59/100 Review before install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"elementalsouls-hunt-exceptional-conditions (hunt-exceptional-conditions)","install_command":"npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions","risk_summary":"Needs review; Reviewed with permission notes; Review before production","verification_result":"Report the smallest successful task, files touched, warnings, and any missing setup."}},"outcome_feedback":{"endpoint":"https://www.openagentskill.com/api/agent/outcome","method":"POST","requires_resolve_event_id":true,"event_id_source":"Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"payload_template":{"event_id":"<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>","skill_slug":"elementalsouls-hunt-exceptional-conditions","task":"Use hunt-exceptional-conditions in an agent workflow","agent":"codex","outcome":"success","install_used":true,"risk_blocked":false,"setup_required":false,"task_success":true,"output_quality":4,"error_type":null,"human_review_required":false,"workspace":"sandbox","time_to_useful_ms":120000,"notes":"Report the smallest successful task, setup friction, files touched, and risk notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions","api":"https://www.openagentskill.com/api/agent/skills/elementalsouls-hunt-exceptional-conditions","audit":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=elementalsouls-hunt-exceptional-conditions&task=Use%20hunt-exceptional-conditions%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20hunt-exceptional-conditions%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20hunt-exceptional-conditions%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/elementalsouls-hunt-exceptional-conditions/install","manifest":"https://www.openagentskill.com/api/registry/manifest/elementalsouls-hunt-exceptional-conditions"}},"machine_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"elementalsouls-hunt-exceptional-conditions","name":"hunt-exceptional-conditions","description":"Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack.","category":"automation","url":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions","repository":"https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions","github_repo":"elementalsouls/Claude-BugHunter"},"suited_tasks":["Browser automation workflows","Claude Code teams","teams that value GitHub adoption signals","Navigate pages","Click and type safely","Check visual and DOM state","Search sources","Extract claims"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions","ready":true,"targets":[{"id":"openagentskill-cli","label":"CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add elementalsouls-hunt-exceptional-conditions"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"hunt-exceptional-conditions\" agent skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"claude-code","label":"Claude Code","kind":"agent-prompt","value":"Add \"hunt-exceptional-conditions\" as a Claude Code skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"hunt-exceptional-conditions\" from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."}],"handoff_url":"https://www.openagentskill.com/api/skills/elementalsouls-hunt-exceptional-conditions/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/elementalsouls-hunt-exceptional-conditions"},"trust":{"score":74,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"4.3K GitHub stars","repoActivity":"4.3K stars, 654 forks","lastPushed":"2d since push","license":"MIT","repository":"https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions","install":"npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions","installSafety":"standard package or runtime install path","permissionSurface":"filesystem or document access, network or browser access","documentation":"Usable metadata, review docs","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["automation","agent-skill"],"known_risks":["The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access","Permission surface: filesystem or document access, network or browser access"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"audit":{"score":83,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Permission surface may require sandboxing","The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","No mention of responsible disclosure or rate limiting to avoid harming target systems.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access","Permission surface: filesystem or document access, network or browser access"]},"safety_gate":{"tier":"reviewed","label":"Reviewed with permission notes","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Require human approval before installing into a real workspace."},"quality":{"score":83,"label":"Strong"},"supply":{"track":"Coding and developer agents","scenario":"Database and SQL","maintenance":"2d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","No OpenAgentSkill engagement data yet","Permission surface may require sandboxing","No mention of responsible disclosure or rate limiting to avoid harming target systems.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access"],"agent_contract":{"task_input":"Use hunt-exceptional-conditions in an agent workflow","recommended_action":"Require human approval before installing into a real workspace.","install_policy":"review","minimum_review_before_use":["Trust: 74/100 Strong shortlist","Audit: 83/100 Needs review","Safety: 59/100 Review before install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"elementalsouls-hunt-exceptional-conditions (hunt-exceptional-conditions)","install_command":"npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions","risk_summary":"Needs review; Reviewed with permission notes; Review before production","verification_result":"Report the smallest successful task, files touched, warnings, and any missing setup."}},"outcome_feedback":{"endpoint":"https://www.openagentskill.com/api/agent/outcome","method":"POST","requires_resolve_event_id":true,"event_id_source":"Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"payload_template":{"event_id":"<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>","skill_slug":"elementalsouls-hunt-exceptional-conditions","task":"Use hunt-exceptional-conditions in an agent workflow","agent":"codex","outcome":"success","install_used":true,"risk_blocked":false,"setup_required":false,"task_success":true,"output_quality":4,"error_type":null,"human_review_required":false,"workspace":"sandbox","time_to_useful_ms":120000,"notes":"Report the smallest successful task, setup friction, files touched, and risk notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions","api":"https://www.openagentskill.com/api/agent/skills/elementalsouls-hunt-exceptional-conditions","audit":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=elementalsouls-hunt-exceptional-conditions&task=Use%20hunt-exceptional-conditions%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20hunt-exceptional-conditions%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20hunt-exceptional-conditions%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/elementalsouls-hunt-exceptional-conditions/install","manifest":"https://www.openagentskill.com/api/registry/manifest/elementalsouls-hunt-exceptional-conditions"}},"supply_profile":{"track":{"slug":"coding","label":"Coding and developer agents","shortLabel":"Coding","description":"Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills."},"scenario":{"label":"Database and SQL","description":"I need my agent to inspect database schemas, write SQL, and explain query results.","useCases":[{"slug":"browser-automation","title":"Browser automation"},{"slug":"research-agents","title":"Research agents"},{"slug":"database-sql","title":"Database and SQL"}]},"applicableAgents":["Claude Code","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":4307,"starsLabel":"4.3K","forks":654,"license":"MIT","qualityScore":83,"trustScore":74,"auditScore":83},"maintenance":{"status":"fresh","label":"2d since push","daysSincePush":2,"lastPushedAt":"2026-09-06T08:42:06+00:00"},"risk":{"level":"needs_review","label":"Needs review","requiresReview":true,"notes":["Permission surface may require sandboxing","The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","No mention of responsible disclosure or rate limiting to avoid harming target systems.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access"]},"coverageTags":["Coding","Database and SQL","automation","agent-skill"]},"audit":{"audit_score":83,"risk_level":"needs_review","risk_label":"Needs review","quality_score":83,"trust_score":74,"maintenance_score":100,"security_score":78,"install_score":92,"warnings":["Permission surface may require sandboxing","The skill does not explicitly state that it must only be used on systems with explicit authorization, which is a compliance consideration.","No mention of responsible disclosure or rate limiting to avoid harming target systems.","Quality score needs review","Permission surface needs review: filesystem or document access, network or browser access","Permission surface: filesystem or document access, network or browser access"]},"quality_signals":{"model":"v2","star_score":25.44,"usage_score":0,"review_score":5.1,"metadata_score":3,"freshness_score":15},"platforms":["Claude Code"],"use_cases":[{"slug":"browser-automation","title":"Browser automation","url":"https://www.openagentskill.com/use-cases/browser-automation"},{"slug":"research-agents","title":"Research agents","url":"https://www.openagentskill.com/use-cases/research-agents"},{"slug":"database-sql","title":"Database and SQL","url":"https://www.openagentskill.com/use-cases/database-sql"},{"slug":"local-desktop","title":"Local desktop","url":"https://www.openagentskill.com/use-cases/local-desktop"}],"stacks":[{"slug":"research-report-agent","title":"Research report agent","url":"https://www.openagentskill.com/collections/research-report-agent"},{"slug":"browser-qa-agent","title":"Browser QA agent","url":"https://www.openagentskill.com/collections/browser-qa-agent"},{"slug":"content-growth-agent","title":"Content growth agent","url":"https://www.openagentskill.com/collections/content-growth-agent"}],"install":"npx skills add elementalsouls/Claude-BugHunter --skill hunt-exceptional-conditions","install_targets":[{"id":"openagentskill-cli","label":"CLI","title":"OpenAgentSkill CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add elementalsouls-hunt-exceptional-conditions","description":"Resolve policy, run the source installer safely, and report a verified install receipt.","copyLabel":"Copy command"},{"id":"codex","label":"Codex","title":"Codex install prompt","kind":"agent-prompt","value":"Install the \"hunt-exceptional-conditions\" agent skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Give Codex a repo-aware install prompt when the skill is not available through a local CLI.","copyLabel":"Copy prompt"},{"id":"claude-code","label":"Claude Code","title":"Claude Code skill prompt","kind":"agent-prompt","value":"Add \"hunt-exceptional-conditions\" as a Claude Code skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this prompt to ask Claude Code to add the skill and explain the local activation steps.","copyLabel":"Copy prompt"},{"id":"cursor","label":"Cursor","title":"Cursor rule prompt","kind":"agent-prompt","value":"Turn \"hunt-exceptional-conditions\" from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"elementalsouls-hunt-exceptional-conditions\",\"task\":\"Install hunt-exceptional-conditions\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this when installing as Cursor project rules or reusable agent instructions.","copyLabel":"Copy prompt"}],"repository":"https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions","github_repo":"elementalsouls/Claude-BugHunter","version":"1.0.0","license":"MIT","urls":{"web":"https://www.openagentskill.com/skills/elementalsouls-hunt-exceptional-conditions","repository":"https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-exceptional-conditions","api":"/api/agent/skills/elementalsouls-hunt-exceptional-conditions","install_api":"/api/skills/elementalsouls-hunt-exceptional-conditions/install"},"meta":{"created_at":"2026-09-06T13:24:28.899818+00:00","updated_at":"2026-09-06T13:24:28.975365+00:00","agent_friendly":true}}