validate-mcp SKILL.md skillA
validate-mcp from pdugan20/claudelint is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pdugan20/claudelint/validate-mcp@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pdugan20/claudelint
- Path
skills/validate-mcp/SKILL.md- Versions recorded
- 5
- Latest version
- v1.0.0, committed Feb 19, 2026
- First version recorded
- Feb 6, 2026
- Size
- 1,160 bytes
- Repository stars
- 14
- License
- MIT
Validates MCP server configuration files (.mcp.json). Use when user asks to "check my .mcp.json", "why isn't my MCP working", ".mcp.json errors", "validate MCP servers", or "MCP connection failed". Validates transport types (stdio, sse, http, websocket), server names, and environment variables.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Validate MCP Servers
Runs `claudelint validate-mcp` to validate `.mcp.json` configuration files.
## Usage
```bash
claudelint validate-mcp $ARGUMENTS
```
## Options
- `--path <path>` - Custom path to .mcp.json
- `--verbose` - Show detailed output
- `--warnings-as-errors` - Treat warnings as errors
## What Gets Validated
- JSON syntax
- Server name uniqueness and consistency
- Transport type (stdio, sse)
- Stdio transport (command validation)
- SSE transport (URL validation)
- Variable expansion patterns (${VAR}, ${VAR:-default})
- Environment variables
## Examples
```bash
claudelint validate-mcp
claudelint validate-mcp --path /path/to/.mcp.json
```
## See Also
- [validate-all](../validate-all/SKILL.md) - Run all validatorsRead the whole file at its exact version.
How to install
mdr add pdugan20/claudelint/validate-mcp@sha256:f56b3d89e8b247deThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_cfipkyuna6tvm7kj)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Feb 6, 2026 and Feb 19, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-02-19 | 22dd244 | 1,160 B | A | view · diff |
| v1.0.0 | 2026-02-16 | 7643dd5 | 1,124 B | A | view · diff |
| v1.0.0 | 2026-02-10 | 5ef230b | 1,155 B | A | view · diff |
| v1.0.0 | 2026-02-10 | ed9efc7 | 1,164 B | A | view · diff |
| v1.0.0 | 2026-02-06 | cf4d7d5 | 1,207 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1160 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
pdugan20/claudelint · 14 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_cfipkyuna6tvm7kj GET https://markdownregistry.com/api/v1/resolve?ref=pdugan20/claudelint/validate-mcp GET https://markdownregistry.com/api/v1/blob/f56b3d89e8b247de1c775f8beee32a0a5de36f7f58d35336fc952840282b822c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.