aspenkit
Registry indexed
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Core conventions, tech stack, and project structure for aspens
Registry indexed
Core conventions, tech stack, and project structure for aspens
Core conventions, tech stack, and project structure for aspens
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You are working in aspens — a CLI that keeps coding-agent context accurate as your codebase changes. Scans repos, generates project-specific instructions and skills for Claude Code, Codex, and OpenCode CLI, and keeps them fresh.
Node.js 20+ (ESM) | Commander | Vitest | es-module-lexer | @clack/prompts | picocolors
npm test — Run vitest suitenpm start / node bin/cli.js — Run CLIaspens scan [path] — Deterministic repo analysis (no LLM)aspens doc init [path] — Generate skills + hooks + CLAUDE.md (--target claude|codex|opencode, --recommended for full recommended setup)aspens doc impact [path] — Show freshness, coverage, and drift of generated context (--apply for auto-repair, --backend/--model/--timeout/--verbose for LLM interpretation)aspens doc sync [path] — Incremental skill updates from git diffsaspens doc graph [path] — Rebuild import graph cache (.claude/graph.json)aspens add <type> [name] — Install templates (agents, commands, hooks)aspens customize agents — Inject project context into installed agentsaspens save-tokens [path] — Install token-saving session settings (--recommended for no-prompt install, --remove to uninstall)ASPENS_DEBUG=1 dumps raw stream events to $TMPDIR/aspens-debug-{stream,codex-stream}.jsonASPENS_TIMEOUT (seconds) overrides default LLM timeout when --timeout not passedCLI entry (bin/cli.js) → command handlers (src/commands/) → lib modules (src/lib/)
src/lib/scanner.js — Deterministic repo scanner (languages, frameworks, domains, structure)src/lib/graph-builder.js — Static import analysis via es-module-lexer (hub files, clusters, priority)src/lib/graph-persistence.js — Graph serialization, subgraph extraction, code-map + index generationsrc/lib/runner.js — Claude/Codex CLI wrapper (runClaude for stream-json, runCodex for Codex JSONL); also hosts loadPrompt (partial substitution) and parseFileOutput/validateSkillFilessrc/lib/context-builder.js — Assembles repo files into prompt-friendly contextsrc/lib/skill-writer.js — Writes skill files and directory-scoped files, generates skill-rules.json, merges settingssrc/lib/skill-reader.js — Parses skill files, frontmatter, triggers: blocks, legacy activation patterns, keywordssrc/lib/diff-classifier.js — Maps changed files to affected skills for doc-syncsrc/lib/diff-helpers.js — Targeted file diffs and prioritized diff truncation for doc-syncsrc/lib/git-helpers.js — Git repo detection, git root resolution, diff retrieval, log formattingsrc/lib/git-hook.js — Post-commit git hook installation/removal for auto doc-sync (monorepo-aware)src/lib/impact.js — Context health analysis: domain coverage, hub surfacing, drift detection, hook health, save-tokens health, usefulness summary, value comparison, opportunitiessrc/lib/save-tokens.js — Save-tokens config defaults, settings builders, gitignore/readme generatorssrc/lib/timeout.js — Timeout resolution (--timeout flag > ASPENS_TIMEOUT env > default)src/lib/errors.js — CliError class (structured errors caught by CLI top-level handler)src/lib/target.js — Target definitions (claude/codex), config persistence (.aspens.json) with saveTokens feature config; getAllowedPaths for multi-target sanitizationsrc/lib/target-transform.js — Transforms Claude-format output to other target formatssrc/lib/backend.js — Backend detection and resolution (which CLI generates content)src/lib/path-resolver.js / src/lib/source-exts.js — Source-file extension and path resolution helpers shared by scanner/graph"type": "module" throughout; use import/export, never require()await init before calling parse() in graph-builderrunClaude() spawns claude -p with stream-json; always use --verbose flag with stream-jsonrunCodex() spawns codex exec --json --sandbox read-only --ask-for-approval never --ephemeral; returns { text, usage } matching runClaude interfacerunClaude/runCodex pipe prompts via stdin and respect drain when write() returns false; never rewrite to use args (shell length limits)parseFileOutput() restricts writes to .claude/ and CLAUDE.md by default; accepts allowedPaths override for multi-target via getAllowedPaths(targets)allowedTools: ['Read', 'Glob', 'Grep']; never broaden without review{{name}} in prompt files resolves to src/prompts/partials/name.md first, then falls back to template variables.aspens.json. Customize is Claude-only (CliError if targets: ['codex'])CliError instead of calling process.exit(); caught at top level in bin/cli.jsgetGitRoot() resolves the actual git root; hooks, sync, and impact scope to the subdirectory project pathbin/ — CLI entry point (commander setup, CliError handler)src/commands/ — Command handlers (scan, doc-init, doc-impact, doc-sync, doc-graph, add, customize, save-tokens)src/lib/ — Core library modulessrc/prompts/ — Prompt templates + partialssrc/templates/ — Installable agents, commands, hooks, settingstests/ — Vitest test filesLast Updated: 2026-05-11
name: base description: Core conventions, tech stack, and project structure for aspens triggers: alwaysActivate: true
---
name: base
description: Core conventions, tech stack, and project structure for aspens
triggers:
alwaysActivate: true
---
You are working in **aspens** — a CLI that keeps coding-agent context accurate as your codebase changes. Scans repos, generates project-specific instructions and skills for Claude Code, Codex, and OpenCode CLI, and keeps them fresh.
## Tech Stack
Node.js 20+ (ESM) | Commander | Vitest | es-module-lexer | @clack/prompts | picocolors
## Commands
- `npm test` — Run vitest suite
- `npm start` / `node bin/cli.js` — Run CLI
- `aspens scan [path]` — Deterministic repo analysis (no LLM)
- `aspens doc init [path]` — Generate skills + hooks + CLAUDE.md (`--target claude|codex|opencode`, `--recommended` for full recommended setup)
- `aspens doc impact [path]` — Show freshness, coverage, and drift of generated context (`--apply` for auto-repair, `--backend`/`--model`/`--timeout`/`--verbose` for LLM interpretation)
- `aspens doc sync [path]` — Incremental skill updates from git diffs
- `aspens doc graph [path]` — Rebuild import graph cache (`.claude/graph.json`)
- `aspens add <type> [name]` — Install templates (agents, commands, hooks)
- `aspens customize agents` — Inject project context into installed agents
- `aspens save-tokens [path]` — Install token-saving session settings (`--recommended` for no-prompt install, `--remove` to uninstall)
- **Debug:** `ASPENS_DEBUG=1` dumps raw stream events to `$TMPDIR/aspens-debug-{stream,codex-stream}.json`
- **Env knob:** `ASPENS_TIMEOUT` (seconds) overrides default LLM timeout when `--timeout` not passed
## Architecture
CLI entry (`bin/cli.js`) → command handlers (`src/commands/`) → lib modules (`src/lib/`)
- `src/lib/scanner.js` — Deterministic repo scanner (languages, frameworks, domains, structure)
- `src/lib/graph-builder.js` — Static import analysis via es-module-lexer (hub files, clusters, priority)
- `src/lib/graph-persistence.js` — Graph serialization, subgraph extraction, code-map + index generation
- `src/lib/runner.js` — Claude/Codex CLI wrapper (`runClaude` for stream-json, `runCodex` for Codex JSONL); also hosts `loadPrompt` (partial substitution) and `parseFileOutput`/`validateSkillFiles`
- `src/lib/context-builder.js` — Assembles repo files into prompt-friendly context
- `src/lib/skill-writer.js` — Writes skill files and directory-scoped files, generates skill-rules.json, merges settings
- `src/lib/skill-reader.js` — Parses skill files, frontmatter, `triggers:` blocks, legacy activation patterns, keywords
- `src/lib/diff-classifier.js` — Maps changed files to affected skills for doc-sync
- `src/lib/diff-helpers.js` — Targeted file diffs and prioritized diff truncation for doc-sync
- `src/lib/git-helpers.js` — Git repo detection, git root resolution, diff retrieval, log formatting
- `src/lib/git-hook.js` — Post-commit git hook installation/removal for auto doc-sync (monorepo-aware)
- `src/lib/impact.js` — Context health analysis: domain coverage, hub surfacing, drift detection, hook health, save-tokens health, usefulness summary, value comparison, opportunities
- `src/lib/save-tokens.js` — Save-tokens config defaults, settings builders, gitignore/readme generators
- `src/lib/timeout.js` — Timeout resolution (`--timeout` flag > `ASPENS_TIMEOUT` env > default)
- `src/lib/errors.js` — `CliError` class (structured errors caught by CLI top-level handler)
- `src/lib/target.js` — Target definitions (claude/codex), config persistence (`.aspens.json`) with `saveTokens` feature config; `getAllowedPaths` for multi-target sanitization
- `src/lib/target-transform.js` — Transforms Claude-format output to other target formats
- `src/lib/backend.js` — Backend detection and resolution (which CLI generates content)
- `src/lib/path-resolver.js` / `src/lib/source-exts.js` — Source-file extension and path resolution helpers shared by scanner/graph
- `src/lib/parsers/` — Language-specific import parsers (TypeScript, Python)
- `src/lib/frameworks/` — Framework-specific detectors (e.g. Next.js)
- `src/prompts/` — Prompt templates with `{{partial}}` and `{{variable}}` substitution
- `src/templates/` — Bundled agents, commands, hooks, and settings for `aspens add` / `doc init` / `save-tokens`
## Critical Conventions
- **Pure ESM** — `"type": "module"` throughout; use `import`/`export`, never `require()`
- **es-module-lexer WASM** — must `await init` before calling `parse()` in graph-builder
- **Claude CLI execution** — `runClaude()` spawns `claude -p` with stream-json; always use `--verbose` flag with stream-json
- **Codex CLI execution** — `runCodex()` spawns `codex exec --json --sandbox read-only --ask-for-approval never --ephemeral`; returns `{ text, usage }` matching `runClaude` interface
- **Stdin with backpressure** — `runClaude`/`runCodex` pipe prompts via stdin and respect `drain` when `write()` returns false; never rewrite to use args (shell length limits)
- **Path sanitization** — `parseFileOutput()` restricts writes to `.claude/` and `CLAUDE.md` by default; accepts `allowedPaths` override for multi-target via `getAllowedPaths(targets)`
- **Read-only LLM tools** — customize-style commands pass `allowedTools: ['Read', 'Glob', 'Grep']`; never broaden without review
- **Prompt partials** — `{{name}}` in prompt files resolves to `src/prompts/partials/name.md` first, then falls back to template variables
- **Target/Backend distinction** — Target = output format/location; Backend = which LLM CLI generates content. Config persisted in `.aspens.json`. Customize is Claude-only (`CliError` if `targets: ['codex']`)
- **Scanner is deterministic** — no LLM calls; pure filesystem analysis
- **CliError pattern** — command handlers throw `CliError` instead of calling `process.exit()`; caught at top level in `bin/cli.js`
- **Monorepo support** — `getGitRoot()` resolves the actual git root; hooks, sync, and impact scope to the subdirectory project path
- **Verify before claiming** — Never state something is configured/running/done without confirming in-session
## Structure
- `bin/` — CLI entry point (commander setup, CliError handler)
- `src/commands/` — Command handlers (scan, doc-init, doc-impact, doc-sync, doc-graph, add, customize, save-tokens)
- `src/lib/` — Core library modules
- `src/prompts/` — Prompt templates + partials
- `src/templates/` — Installable agents, commands, hooks, settings
- `tests/` — Vitest test files
---
**Last Updated:** 2026-05-11
Source needs review
The tracked source changed or could not be synchronized. Review the current source before installing.
Review before install: Avoid automatic install
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
Version reported in registry metadata; check source releases before relying on it.
Quality
67/100
Promising
Trust
62/100
Sandbox only
Audit
77/100
Needs review
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.
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}Listing source
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src/lib/parsers/ — Language-specific import parsers (TypeScript, Python)src/lib/frameworks/ — Framework-specific detectors (e.g. Next.js)src/prompts/ — Prompt templates with {{partial}} and {{variable}} substitutionsrc/templates/ — Bundled agents, commands, hooks, and settings for aspens add / doc init / save-tokensCopies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.