Agent Skills marketplace: framework-aware skills for code review, documentation, test-plan generation, AI-writing detection, architectural analysis, and git workflows — for Python, Go, Rust, Elixir, React, Remix, and iOS/Swift. Works with Claude Code, Codex, and any agent that supports Agent Skills.
Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Coding agents
I need a coding agent that can understand a repository, edit code, and review pull requests.
Agent fit
Claude Code + OpenAI Agents + Browser agents
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add existential-birds/beagle
Maintenance
fresh
1d since push
Risk
Needs review
Permission surface may require sandboxing
GitHub quality
72
77/100 quality · 75/100 trust
Coverage tags
Review notes
Permission surface may require sandboxing · Quality score needs review
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
StrongSolid option that is likely worth shortlisting for production workflows.
Trust
Sandbox onlyUseful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
Audit
Needs reviewInstall readiness, security metadata, maintenance, and adoption risk.
Trust Score v5
Run only in a sandbox and compare close alternatives before using it for real work.
Stars
72 GitHub stars
Repo activity
72 stars, 8 forks
Maintenance
1d since push
License
Apache-2.0
Install
npx skills add existential-birds/beagle
Install safety
standard package or runtime install path
Permission surface
shell or command execution, filesystem or document access
Agent outcomes
No agent outcome data yet
Docs
Strong README/SKILL.md context
Risk summary
Install readiness
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add existential-birds/beagleDo not use when
Alternative
164.7K stars
npx skills add mattpocock/skills --skill grill-with-docs
Alternative
168.6K stars
npx skills add mattpocock/skills --skill code-review
Alternative
164.7K stars
npx skills add mattpocock/skills --skill to-spec
Alternative
176.7K stars
npx skills add mattpocock/skills --skill to-tickets
Agent safety v2
Sparse or mixed signals. Useful for discovery, but not for autonomous installation.
Test manually in an isolated workspace and compare against safer alternatives.
high
Skill metadata references terminal, CLI, shell, subprocess, or command execution workflows.
medium
Skill may drive a browser or interact with web pages.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
Install targets
Copy the registry command or an agent-specific install prompt for Codex, Claude Code, and Cursor.
Use the registry command when your workflow supports the OpenAgentSkill installer.
$ npx skills add existential-birds/beagleAgent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Resolve JSON
/api/agent/resolve?task=Use%20Beagle%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20Beagle%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/existential-birds-beagle/install
Agent should check
Copy prompt
Task: Use Beagle in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20Beagle%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/existential-birds-beagle/install
Install command: npx skills add existential-birds/beagle
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/existential-birds-beagle/install
LLM text format
/api/skills/existential-birds-beagle/install?format=text
Find alternatives
/api/skills/search?q=Beagle&limit=3
Agent prompt
Use Beagle for this task. Review https://www.openagentskill.com/api/skills/existential-birds-beagle/install, then install with: npx skills add existential-birds/beagleRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/existential-birds-beagle
LLM text
/api/registry/manifest/existential-birds-beagle?format=text
Install alias
/api/registry/install/existential-birds-beagle
Recommend
/api/registry/recommend?task=Use%20Beagle%20in%20an%20agent%20workflow&limit=3
Agent fit
Coding agents
Use-case tags
Platforms
TypeScript, Claude Code, OpenAI Agents, Browser agents
Audit report
Review install readiness, maintenance, trust, quality, and metadata warnings before adding this skill to an agent workflow.
Agent decision cockpit
Shortlist this skill and compare it with close alternatives before production adoption.
Role in stack
Companion skill
Primary fit
Coding agents
Trust label
Strong shortlist
Install path
Command ready
Use when
Evidence
Review first
Implementation path
Trust profile
Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
GitHub adoption
CHECK72 GitHub stars
Stars/forks activity
CHECK72 stars, 8 forks; issue activity unavailable in current metadata
Recent maintenance
PASS1d since push
License clarity
PASSApache-2.0
Good signals
Review before install
Recommended action
Run only in a sandbox and compare close alternatives before using it for real work.
Quality profile
Solid option that is likely worth shortlisting for production workflows.
Workflow fit
Build and ship code
I need a coding agent that can understand a repository, edit code, and review pull requests.
Investigate faster
I need my agent to research a topic, compare sources, and produce a concise report.
Manage repositories
I need my agent to triage GitHub issues, review pull requests, and summarize repository changes.
Stack fit
Inspect, patch, and verify code
A stack for software agents that inspect repositories, review pull requests, generate tests, and turn findings into shippable patches.
Find, compare, and synthesize
A stack for agents that gather sources, compare claims, summarize long material, and draft useful research briefs.
Operate and verify web apps
A stack for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Alternative shortlist
Similar skills in this category, ranked with the same readiness and quality signals.
A relentless interview that pressure-tests a plan against the codebase, sharpens domain language, and updates CONTEXT.md and ADRs when decisions become durable.
Review a branch or diff against repository standards and the originating spec in two independent analysis passes.
Turn the current conversation and codebase context into a structured implementation spec, then publish it to the configured project issue tracker.
Break a plan, spec, or conversation into independently actionable tracer-bullet tickets with explicit blocking relationships.
# beagle
[](https://deepwiki.com/existential-birds/beagle)
*Image: NASA, Public Domain. [Source](https://www.nasa.gov/multimedia/imagegallery/image_feature_572.html)*
Beagle is an [Agent Skills](https://agentskills.io/specification) marketplace: framework-aware code review, documentation, testing, architectural analysis, and git workflows for any compatible coding agent. Skills cover Python, Go, Rust, Elixir, React, Remix v2, and iOS/Swift.
Install for any agent: `npx skills add existential-birds/beagle`. Then your agent loads the right skill automatically, or you run one by name (for example `review-python`).
Pairs with [Amelia](https://github.com/existential-birds/amelia) for agent-based workflows and [Daydream](https://github.com/existential-birds/daydream) for automated review-fix-test loops.
## Installation
**Prerequisites:** - A coding agent that supports [Agent Skills](https://agentskills.io) - [agent-browser](https://github.com/vercel-labs/agent-browser) for the `run-test-plan` skill (optional)
### Any coding agent
Install with the [skills CLI](https://skills.sh/docs/cli):
```bash npx skills add existential-birds/beagle ```
This downloads the skills and configures them for your agent. Codex users: see [.codex/INSTALL.md](.codex/INSTALL.md) and [docs/README.codex.md](docs/README.codex.md).
### Claude Code
```bash claude plugin marketplace add https://github.com/existential-birds/beagle claude plugin install beagle-core@existential-birds ```
Install additional plugins as needed (for example `beagle-python@existential-birds`). Update with:
```bash claude plugin marketplace update existential-birds && claude plugin update <plugin-name> ```
If a marketplace file is reported missing, remove stale entries from `~/.claude/plugins/known_marketplaces.json` and restart.
## Plugins
Each plugin's REA
Frameworks & Tools
Decision snapshot
recent repository activity
Audit snapshot
Install and adoption review
Agent-proven evidence
Outcome reports after resolve, review, install, and one narrow run.
No agent outcome data yet. The first agent run can report success, setup needs, risk blocks, failure, or not-relevant through /api/agent/outcome.
Install
Free and open source. Review the audit before production use.
Growth loop
Scenario-led draft for Beagle, ready for a manual X post.
Finance agents don't need louder takes. They need sources, data, and a repeatable research path. Beagle helps turn market noise into source-backed analysis an agent can reuse. 72 stars https://www.openagentskill.com/skills/existential-birds-beagle?ref=x #AIAgents
Listing + install path for Beagle: https://www.openagentskill.com/skills/existential-birds-beagle?ref=x Install: npx skills add existential-birds/beagle
Listing source
This listing was indexed from public sources and is not marked official until a maintainer claim is approved.
Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals.
Claim this skillOwner claim
This community indexed listing is attributed to existential-birds but is not marked official yet. Claim it to add a verified owner signal and make future launch, install, and audit updates easier to trust.
Creator backlink kit
Show the canonical listing, current trust and audit signals, and real Agent Proven evidence where developers evaluate the repository.
[](https://www.openagentskill.com/skills/existential-birds-beagle)
[](https://www.openagentskill.com/skills/existential-birds-beagle)
[](https://www.openagentskill.com/skills/existential-birds-beagle/audit)
[](https://www.openagentskill.com/skills/existential-birds-beagle)existential-birds
@existential-birds
Share whether this skill looks useful for your agent workflow. Aggregated feedback improves rankings over time.
Sandbox only
Grill With Docs
A relentless interview that pressure-tests a plan against the codebase, sharpens domain language, and updates CONTEXT.md and ADRs when decisions become durable.
164.7K stars · 0 installsCode Review
Review a branch or diff against repository standards and the originating spec in two independent analysis passes.
168.6K stars · 0 installsTo Spec
Turn the current conversation and codebase context into a structured implementation spec, then publish it to the configured project issue tracker.
164.7K stars · 0 installsTo Tickets
Break a plan, spec, or conversation into independently actionable tracer-bullet tickets with explicit blocking relationships.
176.7K stars · 0 installs