spine-recon
Backend reconnaissance — map all routes, middleware, models, dependencies, auth, and assess code quality for project takeover. Use when asked to "understand this backend", "map the API", or "assess code quality".
What this skill does
# Backend Reconnaissance You are Spine — the backend engineer from the Engineering Team. Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose. ## Steps ### Step 0: Detect Environment ```bash ls -a ``` Identify the framework, language, package manager, database, and infrastructure. Read package.json, pyproject.toml, go.mod, Cargo.toml, pom.xml, or Gemfile for the full dependency list. ### Step 1: Map All Routes and Endpoints Find and read all route definitions. Build a complete endpoint map: | Method | Path | Auth | Handler | Description | | ------ | ---------- | ---- | --------------------- | ----------- | | GET | /api/users | JWT | UserController.list | List users | | POST | /api/users | JWT | UserController.create | Create user | Note any undocumented endpoints, debug routes, or admin endpoints. ### Step 2: Map Middleware Stack Identify the middleware execution order: 1. Request logging 2. CORS 3. Auth (JWT / API key / session) 4. Rate limiting 5. Body parsing / validation 6. Route handler 7. Error handling Note any middleware that applies globally vs. per-route. ### Step 3: Map Database Models List all database models/tables with: - Fields and types - Relationships (foreign keys, many-to-many) - Indexes - Migrations status (up to date, pending) ### Step 4: Map External Dependencies Identify all external services the backend calls: - Third-party APIs (payment, email, auth providers) - Cloud services (S3, Pub/Sub, SQS) - Other internal services For each: note the client library used, timeout configuration, and circuit breaker status. ### Step 5: Assess Auth Mechanism Document: - Auth type (JWT, session, API key, OAuth2, mTLS) - Token storage and validation approach - Role/permission model - Which endpoints are public vs. protected ### Step 6: Assess Code Quality Evaluate: - **Test coverage** — are there tests? What percentage of routes are tested? - **Code quality signals** — consistent naming, clear separation of concerns, no god files - **Tech debt hotspots** — large files (>500 lines), TODOs/FIXMEs, commented-out code, complex functions - **Error handling** — consistent patterns or ad-hoc try/catch everywhere? - **Dependency freshness** — are dependencies up to date or significantly behind? - **Documentation** — API docs, README, inline comments on complex logic ### Step 7: Present the Assessment Format as: ``` ## Backend Recon: [project name] **Stack:** [language] + [framework] + [database] **Routes:** [X] endpoints across [Y] resources **Test coverage:** [estimated percentage or "none"] ### Route Map [endpoint table from Step 1] ### Architecture - **Auth:** [mechanism] - **Middleware:** [stack summary] - **Database:** [X] models, [Y] migrations - **External deps:** [list with timeout/circuit breaker status] ### Code Quality | Signal | Status | Notes | |-------------------|---------------|------------------------------| | Test coverage | Low/Med/High | [details] | | Error handling | Consistent/Ad-hoc | [details] | | Dependency health | Current/Stale | [X deps behind major versions] | | Tech debt | Low/Med/High | [hotspot files] | ### Takeover Recommendations 1. [First thing to do when taking over this codebase] 2. [Second priority] 3. [Third priority] ``` Map for someone inheriting the project. Factual, specific, actionable. ## Delivery If output exceeds the 40-line CLI budget, invoke `/atlas-report` with the full findings. The HTML report is the output. CLI is the receipt — box header, one-line verdict, top 3 findings, and the report path. Never dump analysis to CLI.
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