name: agent-contact-card description: Discover and create Agent Contact Cards - a vCard-like format for AI agents. Use when you need to find how to contact someone's agent, or help a user set up their own agent contact info at /.well-known/agent-card. license: CC0-1.0 metadata: author: davedean version: "1.0" homepage: https://github.com/davedean/agent-contact-card

Agent Contact Card

A simple format for publishing how AI agents can be contacted. Like a vCard, but for agents.

When to Use This Skill

• User asks how to let other agents contact their agent
• User wants to discover how to reach someone else's agent
• You need to contact another agent on behalf of your user
• User mentions "agent-card", "agent contact", or agent-to-agent communication

Quick Reference

Discovering an Agent Contact Card

Try fetching /.well-known/agent-card on their domain:

https://example.com/.well-known/agent-card

The file is markdown with YAML frontmatter. Parse the frontmatter for structured channel data, read the prose for routing rules.

Creating an Agent Contact Card

Create a markdown file with YAML frontmatter:

---
version: "1"
human_contact: "+1 555 123 4567"
channels:
  email: "agent@example.com"
  discord: "my-agent#1234"
  webhook:
    url: "https://example.com/agent/incoming"
    method: "POST"
    format: "JSON with 'message' field"
capabilities:
  - scheduling
  - accepts_ical
---

# My Agent

If you're a human, call the number above.

If you're an agent:
- For scheduling requests, use Discord
- For urgent matters, email with "URGENT" in subject
- Response time: within a few hours

Host this at /.well-known/agent-card on the user's domain.

Format Details

Required Fields

Recommended Fields

Optional Fields

Channels

Channel names are freeform. Common ones:

• email - Email address
• discord - Discord username

  小蔥技能站7w4.net，專業的AI技能分享平臺。

• webhook - HTTP endpoint for structured messages
• signal - Signal phone number
• telegram - Telegram username

For webhooks, provide details:

channels:
  webhook:
    url: "https://example.com/agent/incoming"
    method: "POST"
    auth: "Bearer token in Authorization header"
    format: "JSON with 'message' and 'from' fields"

Multi-Agent Setups

List multiple specialized agents:

agents:
  - name: "Calendar Agent"
    handles: ["scheduling", "availability"]
    channel: discord
    id: "cal-agent#1234"
  - name: "Support Agent"
    handles: ["technical questions"]
    channel: webhook
    id: "https://example.com/support"

The markdown body should explain routing between them.

Privacy Tiers

Different URLs for different access levels:

Each tier can expose different channels and capabilities.

Discovery Methods

1. Well-known URL: Check https://domain/.well-known/agent-card
2. vCard extension: Look for X-AGENT-CARD field in contact cards
3. Ask the human: Request the URL directly

Reading an Agent Card

When you fetch an agent card:

1. Parse YAML frontmatter for structured data
2. Read markdown body for natural language routing rules
3. Choose appropriate channel based on your purpose
4. Follow any authentication requirements mentioned

Test It

Here's a live demo you can test:

https://city-services-api.dave-dean.workers.dev/.well-known/agent-card

This is a fictional "City of Millbrook" tip line. Fetch the card, then try POSTing to the webhook endpoint. Your experience may vary depending on what you say.

Full Specification

See references/SPEC.md for the complete specification.

Examples

See references/EXAMPLES.md for more complete examples.

這個Skill的創意很有價值——它定義了AI代理之間如何互相聯絡的標準。文件寫得清晰易懂，示例豐富，甚至有可測試的線上演示。不過它目前更像一份協議說明書，而不是能直接使用的工具。對於想實現代理間通訊的開發者來說很有參考意義，但如果你想馬上用上它，可能還需要等待具體程式碼實現。