create-echo-plugin SKILL.md skillA
create-echo-plugin from brentfarris/echo is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add brentfarris/echo/create-echo-plugin@git:20261101.8c1a04cPins git:20261101.8c1a04c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- brentfarris/echo
- Path
skills/create-echo-plugin/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261101.8c1a04c, committed Nov 1, 2026
- Size
- 8,619 bytes
- Repository stars
- 12
- License
- MIT
Create or update Echo plugins, including HTML apps, Go/WASI tools, model providers, and chat renderers. Use for plugin manifests, capabilities, settings, network access, installation, and debugging generated plugins.
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
# Create an Echo plugin
Create a self-contained API 1 package using Echo's existing Plugin Authoring tools. These instructions describe this repository's implementation; check the linked source when changing an integration or when the running Echo version differs.
## Choose the package
| Need | Template | Implementation |
| --- | --- | --- |
| Interactive calculator, dashboard, or other app | `ui` | HTML/CSS/JavaScript in a sandboxed iframe; no compiler needed. |
| A tool the model can call | `backend` | Complete Go source compiled to WASI by Echo. |
| A model connection adapter | `provider` | A WASI tool listed in `providers`; selected in model connection settings. |
| Custom assistant-message formatting | `renderer` | A renderer iframe using the separate render protocol. |
A package can combine views and backend tools. Its UI cannot invoke its backend through the current iframe bridge; design around the supported storage and network methods. Use `app: {"viewId":"main"}` to register a floating or embedded view in Apps. `scope: "app"` changes availability; it does not register a GUI.
## Author and install
…Read the whole file at its exact version.
How to install
mdr add brentfarris/echo/create-echo-plugin@sha256:531b00753f20a840The line at the top of this page pins the label git:20261101.8c1a04c, 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_x5jcugctymbg4mic)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Nov 1, 2026.
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 (8619 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
brentfarris/echo · 12 stars · license MIT · pushed 2026-11-06 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_x5jcugctymbg4mic GET https://markdownregistry.com/api/v1/resolve?ref=brentfarris/echo/create-echo-plugin GET https://markdownregistry.com/api/v1/blob/531b00753f20a8407dbcdd651bff0bb14094bfe2d9eb570fc7bc06255338468a
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.