Baume Code Correlator

Map Baume review findings to code locations for code-first API projects.

Preferred Approach: MCP Correlate Tool

IMPORTANT: If the mcp__baume__baume-correlate tool is available, use it instead of manual correlation. The MCP tool:

• Takes a reviewId from baume-review
• Automatically detects framework from package.json
• Uses MCP sampling for accurate code location
• Batch processes all findings efficiently
• Returns ExtendedFinding[] with file:line references

Use mcp__baume__baume-correlate with:
- reviewId: {review-id-from-baume-review}
- projectRoot: {absolute-path-to-project}
- specPath: {absolute-path-to-spec} (optional, for context extraction)
- framework: "nestjs" | "fastify" | "express" | "unknown" (optional hint)
- correlationLevel: "minimal" | "moderate" | "thorough" (optional, default: "moderate")

The manual process below is a fallback for when MCP tools are not available.

When to Use (Manual Fallback)

This skill activates when:

• Creating a fix plan after baume-review for a code-first project
• User asks "where is this endpoint implemented?"
• User wants to fix API issues and needs to know which files to modify
• Mapping OpenAPI spec paths to source code
• MCP correlate tool is not available

Prerequisites

• Baume review findings (from baume-review MCP tool or review document)
• Access to project source code
• OpenAPI spec (to extract operation context)

Correlation Process

Step 1: Gather Inputs

From MCP tool results: If baume-review was called, use the findings from that response.

From review document: If working from .baume/reviews/*.md, read the document to get:

• spec_path from frontmatter
• Findings list with ruleId, path, severity

Step 2: Extract Operations from Findings

Parse each finding's path field to extract method and API path:

"GET /users/{id}" → method: GET, path: /users/{id}
"POST /orders"    → method: POST, path: /orders

Dedupe by method+path (multiple findings may target same endpoint).

Step 3: Detect Framework

Read package.json in project root:

• @nestjs/core → NestJS (decorators: @Controller, @Get, @Post)
• fastify → Fastify (route methods: .get, .post, app.route)
• express → Express (router methods: router.get, app.get)

Step 4: Find Code Locations

For each unique operation, spawn a baume-code-locator agent:

Task: baume-code-locator
Prompt: Find the code that implements this API operation:
  - method: GET
  - path: /users/{id}
  - operationId: getUserById (if available from spec)
  - framework: nestjs
  - rootDir: /project

Spawn up to 5 agents in parallel for efficiency.

Step 5: Compile Extended Findings

For each finding, build this structure:

{
  "finding": {
    "ruleId": "aip122/plural-resources",
    "severity": "warning",
    "path": "GET /user/{id}",
    "message": "Resource name should be plural",
    "suggestion": "Rename to /users/{id}",
    "fix": { "type": "rename-path-segment", "..." }
  },
  "specContext": {
    "method": "GET",
    "path": "/user/{id}",
    "operationId": "getUser",
    "summary": "Get a user by ID",
    "tags": ["users"]
  },
  "codeLocations": [
    {
      "file": "src/users/users.controller.ts",
      "line": 42,
      "type": "controller",
      "confidence": "high",
      "snippet": "@Get(':id')\nasync getUser(@Param('id') id: string) { ... }",
      "reasoning": "@Get decorator matches, operationId in @ApiOperation"
    }
  ],
  "suggestedDiffs": {
    "specDiff": "...",
    "codeDiffs": [{ "file": "...", "diff": "...", "description": "..." }]
  }
}

Step 6: Generate Suggested Diffs

For deterministic fixes, pre-populate code diffs using templates from diff-templates.md.

fix.type	Code Diff
rename-path-segment	Update @Controller('user') → @Controller('users')
rename-parameter	Update @Param name
change-status-code	Add/update @HttpCode(201)
remove-request-body	Remove @Body() parameter
add-parameter	Partial - provide template
add-schema	No - too complex, guidance only

Step 7: Output Correlation

Write to .baume/correlations/{date}-{spec-name}.json:

{
  "extendedFindings": [
    /* ... */
  ],
  "framework": "nestjs",
  "generatedAt": "2025-01-15T10:30:00Z",
  "reviewPath": ".baume/reviews/...",
  "specPath": "openapi.yaml",
  "summary": {
    "correlated": 6,
    "notFound": 2,
    "totalFindings": 8
  }
}

Output Format

Report results to user:

## Correlation Complete

| Operation       | Code Location                      | Confidence |
| --------------- | ---------------------------------- | ---------- |
| GET /users/{id} | src/users/users.controller.ts:42   | high       |
| POST /users     | src/users/users.controller.ts:28   | high       |
| GET /orders     | src/orders/orders.controller.ts:15 | medium     |

**Not found:** DELETE /admin/cache, GET /health

Correlation saved to: .baume/correlations/2025-01-15-orders-api.json

MCP Tools Reference

baume-review: Analyze OpenAPI spec against AIP rules. Returns findings with reviewId.

Call: mcp__baume__baume-review with specPath or specUrl
Returns: { reviewId, findings[], summary, findingsPath, findingsUrl }

baume-correlate: Correlate Baume review findings with code locations.

Call: mcp__baume__baume-correlate with reviewId, projectRoot, specPath, framework
Returns: { extendedFindings[], framework, summary, correlationPath }

baume-apply-fixes: Apply suggested fixes to spec (after correlation, to fix spec issues).

Call: mcp__baume__baume-apply-fixes with reviewId, specPath/specUrl, writeBack, dryRun
Returns: { summary, downloadUrl, modifiedSpec }

Agent Reference

baume-code-locator: Find code implementing a single API operation.

• Input: method, path, operationId, tags, rootDir, framework
• Output: CodeLocation[] with file:line, confidence, snippets

File Locations

Purpose	Path
Review documents	.baume/reviews/*.md
Correlation output	.baume/correlations/*.json
Code locator agent	plugins/baume/agents/baume-code-locator.md
Diff templates	diff-templates.md

Related

• Use /baume-plan after correlation to create a fix plan
• Use /baume-validate to verify fixes against the plan
• Use baume-code-locator agent directly for single operation lookup
• See aip-knowledge skill for AIP rule explanations