feat(mcp): codeburn mcp server exposing usage + savings to AI agents#429
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iamtoruk wants to merge 10 commits into
Open
feat(mcp): codeburn mcp server exposing usage + savings to AI agents#429iamtoruk wants to merge 10 commits into
iamtoruk wants to merge 10 commits into
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- Add per-install random salt to pseudonym hash to prevent rainbow table reversal of common project names - Redact session details (dates, models) when project names are hashed to prevent re-identification via cost fingerprinting - Return structuredContent in error responses to satisfy strict MCP clients that validate against declared outputSchema - Remove pre-warm fire-and-forget that raced with the inflight map - Fix empty markdown table producing malformed cells - Add tests for session detail redaction and cross-field consistency
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Summary
Adds a
codeburn mcpsubcommand that runs a stdio MCP server exposing CodeBurn's usage/cost data to AI agents (Claude Code, Cursor, Claude Desktop). Two tools, each returning a ready-to-display markdown table and typed structured JSON:get_usage(period?, by?, limit?, include_project_names?)— headline spend, or a breakdown byproject | model | task | provider. Fast (skips the optimize pass).get_savings(period?, include_project_names?)— optimize findings + retry tax + routing waste (the differentiated analysis competitors don't expose).Try it:
npx codeburn mcp, or configure{ "command": "npx", "args": ["-y", "codeburn", "mcp"] }.Design highlights
status --format menubar-json's logic intobuildMenubarPayloadForRange(periodInfo, opts), parity-gated by the existing menubar test;statusnow calls it too (one shared path).today.get_savingsruns the expensivescanAndDetect;get_usageskips it.project-<6hex>) by default;include_project_names: truereveals them; absolute paths never exposed.isErrorfor tool-level failures, friendly empty-state, token-capped output.@modelcontextprotocol/sdk@^1.29+zodadded as deps and externalized in tsup (not inlined into the bundle).Testing
tsc --noEmitclean; 1015 tests pass (13 new: aggregator, redact, tables, in-memory-transport server tests).dist/cli.js mcp: a real MCP client lists both tools andget_usage todayreturns live data; stdout is clean JSON-RPC.Deferred (follow-up)
Per-provider graceful degradation (
degraded[]) would require changing the sharedparseAllSessionsloop used by every command — deferred to avoid destabilizing the parser. Failures currently surface cleanly at the tool boundary viaisError. This is a pre-existing parser behavior, not introduced here.Design spec:
docs/design/codeburn-mcp.md· Implementation plan:docs/design/codeburn-mcp-plan.md