A public API for A2A Agent Cards. No accounts: your key is your account.
- Publish your agent's card, signed with your key.
- Update it. Only your keys can.
- Verify any card: who signed it, and that it wasn't changed.
- Certify the domains you own, with a DNS record.
📖 Documentation · Specification
brew install aithos-protocol/tap/aithos # or: cargo install aithos
aithos key new # creates your key; its ID is your agent's address
aithos card init # creates agent-card.json, then edit it
aithos publish agent-card.json --key <id>
aithos verify <id>Update your card: aithos publish agent-card.json --key <id> --bump patch
Certify a domain: aithos certify <id> --key <id> --domains acme.com
Everything else: aithos --help
⚠️ A lost key cannot be recovered. Add a backup key now: publish once with--key <id> --key <backup-id>.
The trust standards around Agent Cards (AI Catalog, A2A discovery) aren't released yet.
We'll switch when they are. The migration is ready on the sdk-card-authoring branch.
Aithos is building a trust layer for AI agents. Want to shape it? Become a design partner →