pjt222/agent-almanac · i18n/caveman-lite/skills/design-a2a-agent-card/SKILL.md

design-a2a-agent-card skillA

design-a2a-agent-card is agent-read markdown (skill) from pjt222/agent-almanac: Design an A2A Agent Card (.well-known/agent.json) manifest describing agent capabilities, skills, authentication requirements, and supported content types. Use when building an agent that must be discoverable by other A2A-compliant agents, exposing capabilities for multi-agent orchestration, migrating an existing agent to the A2A protocol, defining the public contract for an agent before implementation, or integrating with agent registries that consume Agent Cards..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add pjt222/agent-almanac/design-a2a-agent-card@v1.0
Exact content
mdr add pjt222/agent-almanac/design-a2a-agent-card@sha256:5627a081eda66b93

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_22ayfhtcwh6sguxu.svg)](https://markdownregistry.com/a/art_22ayfhtcwh6sguxu)

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Versions

versioncommittedcommitsizeaudit
v1.0 latest2026-08-17 a784899 11,008 BA view · diff
v1.02026-04-23 eb36d45 10,979 BA view · diff
v1.02026-04-19 e334ebd 11,026 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (11008 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

GitHub

pjt222/agent-almanac · 33 stars · license MIT · pushed 2026-09-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_22ayfhtcwh6sguxu
GET https://markdownregistry.com/api/v1/resolve?ref=pjt222/agent-almanac/design-a2a-agent-card
GET https://markdownregistry.com/api/v1/blob/5627a081eda66b93f7fce6f433d401875c4759ba3fe1a37f1d9dc87a69c99e08

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.