mcp-echo SKILL.md skillB
mcp-echo from runxhq/runx is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add runxhq/runx/mcp-echo@git:20261007.98bfa03Pins git:20261007.98bfa03 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- runxhq/runx
- Path
fixtures/skills/mcp-echo/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261007.98bfa03, committed Oct 7, 2026
- First version recorded
- Apr 23, 2026
- Size
- 134 bytes
- Repository stars
- 104
- License
- Apache-2.0
Echo a message. Served as a tool by runx mcp serve tests.
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
Return the provided message unchanged.
Read the whole file at its exact version.
How to install
mdr add runxhq/runx/mcp-echo@sha256:600dcfd7bf10a67bThe line at the top of this page pins the label git:20261007.98bfa03, 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_fihvavgqwut4nqc4)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Apr 23, 2026 and Oct 7, 2026, about one every 33 days. Its first recorded version is graded A and its latest B.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261007.98bfa03 latest | 2026-10-07 | 98bfa03 | 134 B | B | view · diff |
| git:20260723.6e5370b | 2026-07-23 | 6e5370b | 156 B | B | view · diff |
| git:20260521.e284759 | 2026-05-21 | e284759 | 579 B | A | view · diff |
| git:20260427.9efbc79 | 2026-04-27 | 9efbc79 | 609 B | A | view · diff |
| git:20260426.a71c522 | 2026-04-26 | a71c522 | 600 B | A | view · diff |
| git:20260423.f416456 | 2026-04-23 | f416456 | 541 B | A | view |
Audit of the latest version
- fail: Size between 200 bytes and 200 KB (134 bytes)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
runxhq/runx · 104 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fihvavgqwut4nqc4 GET https://markdownregistry.com/api/v1/resolve?ref=runxhq/runx/mcp-echo GET https://markdownregistry.com/api/v1/blob/600dcfd7bf10a67bc0eb42d16fb6b82a555cb0d98c0505e21bfd5f6c1d0f5d6a
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.