A2A Agent Card Builder

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Build an Agent2Agent (A2A) Agent Card JSON for /.well-known/agent-card.json with skills, interfaces, capabilities and security.

a2a agent cardagent2agent protocolagent-card.jsona2a buildera2a protocol

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Frequently Asked Questions

What is an Agent Card?

A JSON document describing an A2A agent: name, endpoints, capabilities, skills and authentication, published at /.well-known/agent-card.json.

Which version is generated?

A2A 1.0 (supportedInterfaces), with a legacy v0.3 layout available.

Is my data uploaded?

No. Everything runs locally in your browser.

Generate a valid SKILL.md with YAML frontmatter for Claude Code, Copilot, Codex and other Agent Skills compatible agents.

Validate a SKILL.md file against the Agent Skills specification: frontmatter, name format, description length and body size.

Build a robots.txt that allows or blocks GPTBot, ClaudeBot, PerplexityBot, Google-Extended and other AI crawlers separately for training and search.