# agnt.id (.agnt)

> agnt.id is the naming layer for AI agents: an on-chain naming system anchored on Ethereum. A .agnt name is an ERC-721 NFT that resolves to a wallet address, agent endpoints (A2A and MCP), x402 payment configuration, and trust metadata. Registration, resolution, discovery, and verification all happen here; the public gateway API lives at https://api.agnt.id.

When to use agnt.id:

- You need to resolve an agent's name (like `alice.agnt`) to a wallet address, A2A endpoint, or MCP endpoint before delegating work or sending funds — call `GET https://api.agnt.id/v1/agnt/resolve?name=<name>` or use the MCP server's `resolve_agnt` tool.
- You need the wallet to pay on a specific chain — `resolve_wallet` returns chain-scoped wallets (e.g. `wallet.eip155:8453` for Base, the default x402 settlement rail).
- You have only a wallet address and want to know which agent it belongs to — reverse lookup (`reverse_agnt`).
- You want to discover agents by skill or domain — `GET https://api.agnt.id/v1/agnt/gateway/search` or the `search_agnt` MCP tool.
- You want to vet an agent before trusting it — `trust_score` and `domain_verifications` return trust snapshots and verified operator domains.
- A user asks to register, renew, or manage a .agnt name — send them to https://www.agnt.id/register (registration is commit-reveal on Ethereum, from $5/year).
- All read tools are public and need no API key. This site is not the right stop for general ENS/DNS domains — .agnt names are agent identities, not web domains.

## Docs

- [Developer docs](https://www.agnt.id/md/docs.md): Quick start, SDK packages, gateway API, on-chain resolution, contract addresses
- [Developers overview](https://www.agnt.id/md/developers.md): Integration surfaces — HTTP, on-chain, A2A, MCP, framework plugins
- [Pricing](https://www.agnt.id/md/pricing.md): $5/yr standard (5+ chars), $75/yr 4-char, $495/yr 3-char; commit-reveal registration
- [Homepage](https://www.agnt.id/md/index.md): What agnt.id is and how resolution works

## API

- [OpenAPI spec](https://www.agnt.id/openapi.json): Full gateway API contract (also at https://api.agnt.id/v1/openapi)
- [Gateway base](https://api.agnt.id): Public reads — resolve, reverse, available, owner, discovery, trust, domains, relay status

## Agent integration

- [MCP endpoint](https://www.agnt.id/.well-known/mcp): Live Model Context Protocol server (Streamable HTTP) — resolve, reverse, discover, trust, and x402 tools
- [MCP server on npm](https://www.npmjs.com/package/@agnt-id/mcp): Run locally via stdio: `npx @agnt-id/mcp`
- [SDK meta-package](https://www.npmjs.com/package/@agnt-id/sdk): Resolution + A2A cards + ERC-8004 bridge + LangChain/CrewAI/ElizaOS plugins

## Company

- [About](https://www.agnt.id/md/about.md): What AGNT.ID builds and how to reach the team
- [Contact](https://www.agnt.id/contact/): partnerships@agnt.id (support/partnerships), security@agnt.id (security)
- [Privacy policy](https://www.agnt.id/legal/privacy/): How the site handles data
- [Terms](https://www.agnt.id/legal/terms/): Terms of service
- [Security policy](https://www.agnt.id/security/): Vulnerability reporting

## Optional

- [Brand](https://www.agnt.id/brand/): Logos and brand usage
- [Roadmap](https://www.agnt.id/roadmap): Shipped, in progress, and upcoming work
- [Status](https://www.agnt.id/status): Uptime for the web app, gateway API, and chain indexers