Sourcebook MCP Server

Catches the files your AI agent forgot to change. A safety layer for code changes. sourcebook analyzes git diffs for completeness - flags files that should've been modified but weren't. Rules-based structural detection plus AI-powered semantic analysis. Zero false positives on clean diffs.

People who work with agents md, ai coding and codebase context and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in HTML.

VERIFIED ACTIVE

LAST COMMIT 2026-04-16 · ★ 3 · #229 OF 229 MAINTAINED CODING AGENT · VERIFIED 2026-09-18

NOASSERTION · HTML · how we verify → /methodology

01 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

license no standard license detected - usage rights unclear; check the repo before commercial use

registry namespace io.github.maroondlabs is GitHub-verified and matches the repo owner

02 · What Sourcebook can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.9.0 · 2026-04-08

What's new · AGENTS.md generated by default · sourcebook init and sourcebook update now output both CLAUDE.md and AGENTS.md without any flags. AGENTS.md is the universal agent instruction format - works with Claude…

v0.8.3 · 2026-04-07

What's New · sourcebook ask - query your codebase in natural language · bash · sourcebook ask "where should I add a route?" · sourcebook ask "what files are risky to change?" · No LLM. Pure static analysis. 16 topics…

03 · Who maintains Sourcebook

sourcebook is maintained by maroondlabs. It's the only MCP server we track from this author; the repo dates to Mar 2026.

04 · Facts

repository
github.com/maroondlabs/sourcebook
category
coding agent - ranked #229 of 229 actively-maintained coding agent servers as of 2026-09-18.
registry
io.github.maroondlabs/sourcebook (active, first published 2026-04-03 · 3 versions)

05 · Sourcebook FAQ

What is Sourcebook?

Catches the files your AI agent forgot to change. A safety layer for code changes. sourcebook analyzes git diffs for completeness - flags files that should've been modified but weren't. Rules-based structural detection plus AI-powered semantic analysis. Zero false positives on clean diffs.

Is Sourcebook still maintained?

Yes - as of 2026-09-18, its last commit was 2026-04-16. We re-verify nightly.

06 · Alternatives to Sourcebook

Alternatives to Sourcebook

Maintained coding agent servers if Sourcebook isn't the fit.

  1. Serena A powerful toolkit for coding, providing semantic retrieval and editing capabilities. ★ 29,556 · 2026-09-17
  2. Desktop Commander MCP server for terminal commands, file operations, and process management ★ 9,633 · 2026-09-17
  3. Ouroboros Pins an acceptance spec; the verify command and expected output never enter the success contract. ★ 6,016 · 2026-09-15
  4. Socraticode MCP server for enterprise local codebase indexing, semantic search, and code dependency graphs. ★ 3,312 · 2026-09-17
  5. Omnara Deploy durable AI agents with Omnara, an open-source managed-agent platform. ★ 2,858 · 2026-09-18
  6. Docs Search and read Empryo's documentation. Read-only, no auth, no local access. ★ 1,246 · 2026-09-17

Pairs well with

Servers that cover what Sourcebook doesn't - only shown when the pairing reason fits the companion.

  1. Context7 → documentation companion documentation · ★ 62,152
  2. GitLab MCP → documentation companion documentation · ★ 1,984
  3. Xcode Build MCP → developer tools companion developer tools · ★ 6,397
  4. Sentry MCP → developer tools companion developer tools · ★ 855
  5. Server Filesystem → filesystem companion filesystem · ★ 39,038
  6. Pdf MCP → filesystem companion filesystem · ★ 135

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