agt — open-source packages for .agt agent names

.agt names give AI agents a resolvable identity on Polygon: an owner, on-chain records, a signed manifest and endpoints (MCP, A2A, HTTP). This repository holds the public packages, the agent skill, the manifest specification and the registry manifests behind agtnames.com.

Path	What	Install
packages/resolver	@agtnames/resolver: resolve, verify and read manifests; A2A agent card and ERC-8004 export helpers; agt-resolve CLI	npm i @agtnames/resolver
packages/mcp	@agtnames/mcp: MCP server (stdio) with five read-only tools; the hosted Streamable-HTTP endpoint is https://agtnames.com/api/mcp	npx -y @agtnames/mcp · claude mcp add --transport http agt https://agtnames.com/api/mcp
packages/countersign	@agtnames/countersign: scoped session grants for record writes (EIP-7702 + Delegation Framework caveats)	npm i @agtnames/countersign
skills/agt-names	Agent skill teaching when and how to use the tools and the public API	npx skills add agtnames/agt
spec/	The .agt manifest specification (v3 draft, v1 frozen); rendered at agtnames.com/spec
gemini-extension.json	Gemini CLI extension bundling the MCP server	gemini extensions install https://github.com/agtnames/agt

Docs: agtnames.com/docs · Claude Code and other clients: /docs/claude-code · framework snippets: /docs/integrations.

Registry listings

The MCP server is listed in the official MCP registry as com.agtnames/agt (packages/mcp/server.json), on Smithery (packages/mcp/smithery.yaml) and wherever else packages/mcp/README.md "Listed in" records.

Development

Each package is its own npm project: cd packages/<name> && npm ci && npm run build && npm test. packages/mcp links its siblings with file: dependencies, so build resolver and countersign first. .github/workflows/ci.yml runs the same steps plus node scripts/check-skills.mjs.

Releases: tag resolver-v*, countersign-v* or mcp-v* (or run the release workflow by hand with dry_run). The workflow publishes every package whose version is not on npm yet through npm trusted publishing with provenance, then re-lists the MCP server with mcp-publisher (DNS-verified namespace). See the header of .github/workflows/release.yml.

Security and contributing

Vulnerabilities: see SECURITY.md. Issues and pull requests for anything in this repository are welcome here; see CONTRIBUTING.md. Questions about the agtnames.com service itself go to the contact addresses on the site.

MIT, © 2026 AGT Domains LLC.