ctxlint
Spec Support Unverified Confidence: Good (0.85)ctxlint is an MCP server published by YawLabs; its MCP spec-revision support has not been verified yet. It is the first-party server from YawLabs. Last verified 2026-08-14.
Does ctxlint support the current MCP specification (2026-07-28)?
Undetermined. We have not verified which MCP specification revision ctxlint supports (as of 2026-08-14).
Is ctxlint a first-party (official) MCP server?
Yes. ctxlint is the first-party MCP server published by YawLabs (last verified 2026-08-14).
How do I connect to ctxlint?
ctxlint is available via the package npm:@yawlabs/ctxlint, the official MCP Registry under io.github.YawLabs/ctxlint, the source repository at https://github.com/YawLabs/ctxlint. Authentication: none. Transports: stdio.
When were ctxlint's facts last verified?
2026-08-14. Each fact on this page links to the sources used to verify it.
ctxlint is an MCP server and CLI from YawLabs that lints AI agent context files, such as CLAUDE.md and AGENTS.md, against the codebase they describe. It flags drift between what the docs claim and what the code shows, installs from npm under the @yawlabs scope, and runs locally over stdio with no upstream service or credentials.
The registry record was updated 2026-08-08 and matches npm's latest 0.22.0. Its MCP 500 rank (#113 on the 2026-08-07 snapshot) is driven by its measured signals rather than repository popularity; the GitHub repository has 7 stars. No project surface names a supported MCP revision, so spec status is recorded as unknown.
How widely adopted is ctxlint?
Ranked #50 in The MCP 500 with Adoption Index 73.42 (snapshot , methodology v1).
| Measurement | Value | Source |
|---|---|---|
| Official MCP Registry | yes | API · |
| npm downloads (weekly) | 7,515 | API · |
How was this verified, and what are the sources?
Verified · method: registry-record
· confidence 0.85 (Good).
- Official MCP Registry record io.github.YawLabs/ctxlint v0.22.0 (updated 2026-08-08) - "Lint AI agent context files (CLAUDE.md, AGENTS.md, etc.) against your actual codebase", GitHub-verified namespace, npm package @yawlabs/ctxlint, stdio transport - accessed
- npm package @yawlabs/ctxlint - latest 0.22.0 published 2026-08-08, repository field github.com/YawLabs/ctxlint - accessed
- YawLabs/ctxlint repository via the GitHub API and README - lives in the YawLabs organization, pushed 2026-08-08; README notes SSE transport as deprecated in favor of streamable HTTP for its documentation checks - accessed