Devrag MCP Server
Free Local RAG for Claude Code - Save Tokens & Time 日本語版はこちら | Japanese Version
People who work with developer tools, documentation and embeddings and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Go.
VERIFIED ACTIVE
LAST COMMIT 2026-04-15 · ★ 63 · #203 OF 208 MAINTAINED DOCUMENTATION · VERIFIED 2026-09-18
Go servers · 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.tomohiro-owada is GitHub-verified and matches the repo owner
02 · What Devrag can do
Prose above is summarized from the project's README and registry record - no invented capabilities.
Latest releases
v1.4.4 · 2026-04-15
Fix search crash with zero-vector chunks (#22): vec_distance_cosine() returns NULL for zero vectors (stored as a fallback when chunk embedding fails). The scanner now handles NULL distances gracefully and skips those…
v1.4.3 · 2026-04-04
v1.4.2 · 2026-03-27
SanitizeForTokenizer space counting with problematic Unicode runes (#18) · SanitizeForTokenizer() replaced Box Drawing characters (U+2500–U+257F etc.) with spaces but reset the consecutive-space counter, allowing long…
03 · Who maintains Devrag
devrag is maintained by tomohiro-owada. It's the only MCP server we track from this author; the repo dates to Oct 2025.
04 · Facts
- repository
- github.com/tomohiro-owada/devrag
- category
- documentation - ranked #203 of 208 actively-maintained documentation servers as of 2026-09-18.
- registry
- io.github.tomohiro-owada/devrag (active, first published 2025-12-15)
05 · Devrag FAQ
What is Devrag?
Free Local RAG for Claude Code - Save Tokens & Time 日本語版はこちら | Japanese Version
Is Devrag still maintained?
Yes - as of 2026-09-18, its last commit was 2026-04-15. We re-verify nightly.
06 · Alternatives to Devrag
Alternatives to Devrag
Maintained documentation servers if Devrag isn't the fit.
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- Microsoft Learn MCP Official Microsoft Learn MCP Server – real-time, trusted docs & code samples for AI and LLMs. ★ 1,892 · 2026-09-10
- Pg Aiguide Comprehensive PostgreSQL documentation and best practices, including ecosystem tools ★ 1,843 · 2026-09-16
Pairs well with
Servers that cover what Devrag doesn't - only shown when the pairing reason fits the companion.
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