agent-interface-design SKILL.md skillA
agent-interface-design from jpeetz/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jpeetz/agent-skills/agent-interface-design@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
- jpeetz/agent-skills
- Path
skills/development/finding-unknowns/skills/agent-interface-design/SKILL.md- Versions recorded
- 2
- Latest version
- v1.0.0, committed Sep 14, 2026
- First version recorded
- Aug 31, 2026
- Size
- 2,441 bytes
- Repository stars
- 16
- License
- none declared
Use when building MCP servers or agent-facing tools.
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
# Agent interface design Examples teach one path and quietly fence off the others: shown three ways to call a tool, a model tends to produce those three. A well-designed interface teaches the whole space at once. The parameters say what is possible, the description says what is expected, and there is very little left to write. ## Steps 1. Find out how the tool is actually being misused before redesigning it. Read transcripts, logs, or the user's complaint. Misuse is an interface symptom first and a documentation symptom second, and the fix is usually a rename or a type, not a paragraph. 2. Push meaning into the parameters: - Enumerate instead of accepting free text. A status of `pending | in_progress | completed` teaches the whole state machine without a sentence of prose. - Name for intent rather than implementation, so the right call is the one that reads correctly. - Make invalid states unrepresentable wherever the type system allows it. A parameter that cannot express a mistake needs no warning about that mistake. …
Read the whole file at its exact version.
How to install
mdr add jpeetz/agent-skills/agent-interface-design@sha256:23bb4c3eabb8db0aThe 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_ueuy5jfoflaxook6)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 31, 2026 and Sep 14, 2026, about one every 14 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-09-14 | 5722530 | 2,441 B | A | view · diff |
| v1.0.0 | 2026-08-31 | 945bdcc | 2,440 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 (2441 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
jpeetz/agent-skills · 16 stars · license none declared · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ueuy5jfoflaxook6 GET https://markdownregistry.com/api/v1/resolve?ref=jpeetz/agent-skills/agent-interface-design GET https://markdownregistry.com/api/v1/blob/23bb4c3eabb8db0a6ff49e8ecff23352a8f2707007719021562afee8bf835319
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.