SKILL.md Lint is an MCP server with 6 tools an agent can call, among them cron_explain, diff_texts, json_validate. It answers at https://mcp.moltlinestudio.com/skillmd-lint over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 5 September 2026; the last check, on 18 October 2026, succeeded.
Hosted MCP server to lint SKILL.md files: packaging checks, regex tests, JSON validation, diffs.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
cron_explain | Explain a 5-field cron expression in plain English and flag mistakes. FREE. Typical input {"expression": "0 9 * * 1-5"} returns {"expression": "0 9 * * 1-5", "meaning": "at minute 0; at hour 9; every day of month; every month; day of week 1 Inputs: expression |
diff_texts | Produce a unified diff between two texts. FREE. Useful for comparing two SKILL.md versions. Typical input {"a": "<old text>", "b": "<new text>"} returns {"changed_lines": N, "diff": "--- \n+++ \n@@ ... @@\n-old line\n+new line"}; identical Inputs: a, b |
json_validate | Validate JSON text and summarize its structure. FREE. Typical input {"text": "{\"a\": [1, 2]}"} returns {"valid": true, "structure": {"a": ["array[2]", "int"]}}; invalid JSON returns {"valid": false, "error": "<parser message>", "line": N, Inputs: text |
lint_skill | Lint one SKILL.md file the way marketplaces and agents parse it. FREE. Checks YAML frontmatter presence and required fields (name, description), description quality, body structure (procedure steps, rules, degradation), secret/credential le Inputs: content |
packaging_check | Validate a zip layout plan for a skill marketplace before packaging. FREE. Checks SKILL.md placement rules and flags junk files. Typical input {"file_paths": ["my-skill/SKILL.md", "my-skill/examples.md"], "marketplace": "agensi"} returns {" Inputs: file_paths, marketplace |
regex_test | Test a regular expression against sample strings. FREE. Typical input {"pattern": "v(\\d+)", "samples": ["v12", "beta"]} returns {"pattern": ..., "results": [{"sample": "v12", "match": true, "matched_text": "v12", "groups": ["12"]}, {"sampl Inputs: pattern, samples |
Every block below points at https://mcp.moltlinestudio.com/skillmd-lint. Pick your client and copy.
claude mcp add --transport http skill-md-lint https://mcp.moltlinestudio.com/skillmd-lint
{
"mcpServers": {
"skill-md-lint": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://mcp.moltlinestudio.com/skillmd-lint"]
}
}
}{
"mcpServers": {
"skill-md-lint": {
"url": "https://mcp.moltlinestudio.com/skillmd-lint"
}
}
}{
"servers": {
"skill-md-lint": {
"type": "http",
"url": "https://mcp.moltlinestudio.com/skillmd-lint"
}
}
}{
"context_servers": {
"skill-md-lint": {
"url": "https://mcp.moltlinestudio.com/skillmd-lint"
}
}
}{
"mcpServers": {
"skill-md-lint": {
"serverUrl": "https://mcp.moltlinestudio.com/skillmd-lint"
}
}
}{
"mcpServers": {
"skill-md-lint": {
"url": "https://mcp.moltlinestudio.com/skillmd-lint"
}
}
}name: SKILL.md Lint
version: 0.0.1
schema: v1
mcpServers:
- name: SKILL.md Lint
type: streamable-http
url: https://mcp.moltlinestudio.com/skillmd-lint{
"mcpServers": {
"skill-md-lint": {
"httpUrl": "https://mcp.moltlinestudio.com/skillmd-lint"
}
}
}{
"mcpServers": {
"skill-md-lint": {
"type": "http",
"url": "https://mcp.moltlinestudio.com/skillmd-lint"
}
}
}{
"mcpServers": {
"skill-md-lint": {
"url": "https://mcp.moltlinestudio.com/skillmd-lint"
}
}
}goose://extension?url=https%3A%2F%2Fmcp.moltlinestudio.com%2Fskillmd-lint&type=streamable_http&id=skill-md-lint&name=SKILL.md%20Lint
It answered our last check on 18 October 2026 in 405 ms. Over 10 checks since 5 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by moltlinestudio.com and served from mcp.moltlinestudio.com, the vendor's own domain: https://mcp.moltlinestudio.com/skillmd-lint.
6, as returned by the server's own tools/list on 31 August 2026: cron_explain, diff_texts, json_validate, lint_skill, packaging_check, regex_test.
It answered our last check on 18 October 2026 in 405 ms. Over 10 checks since 5 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://mcp.moltlinestudio.com/skillmd-lint. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: com.moltlinestudio. Endpoint host: mcp.moltlinestudio.com. ARD identifier: urn:air:com.moltlinestudio:mcp:skillmd-lint.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.