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 need coding agent tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in HTML.
VERIFIED ACTIVE
LAST COMMIT 2026-04-16 · ★ 3 · #194 OF 194 MAINTAINED CODING AGENT · VERIFIED 2026-08-25
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 #194 of 194 actively-maintained coding agent servers as of 2026-08-25.
- 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 2026-08-25, 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.
- Serena A powerful toolkit for coding, providing semantic retrieval and editing capabilities. ★ 28,461 · 2026-08-20
- Desktop Commander MCP server for terminal commands, file operations, and process management ★ 9,387 · 2026-08-21
- Ouroboros Pins an acceptance spec; the verify command and expected output never enter the success contract. ★ 5,649 · 2026-08-25
- Socraticode MCP server for local codebase indexing, semantic search, and code dependency graphs. ★ 3,274 · 2026-08-24
- Magic Cloud Self-hosted low-code platform (Docker); its MCP endpoint runs on your own instance, not via npx. ★ 1,180 · 2026-08-24
- LLM Sandbox Securely run LLM-generated code in isolated containers across 7 languages and 3 container backends. ★ 1,111 · 2026-08-23
Pairs well with
Servers that cover what Sourcebook doesn't - only shown when the pairing reason fits the companion.
- Context7 → documentation companion documentation · ★ 61,171
- GitLab MCP → documentation companion documentation · ★ 1,918
- Storybook MCP Addon → developer tools companion developer tools · ★ 268
- Xcode Build MCP → developer tools companion developer tools · ★ 6,274
- Server Filesystem → filesystem companion filesystem · ★ 38,704
- X402 List MCP → filesystem companion filesystem · ★ 58
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