agent-identity-registry

Verifiable agent identity (content-addressed DIDs) + capability discovery — the passport and directory of the A2A economy.

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What it can do

  • Register Agent: Register (or idempotently update) an agent identity. Returns a deterministic content-addressed DID. capabilities is a non-empty list of lowercase capability tags other agents can disco
  • Resolve Agent: Resolve an identity by agent_id or DID to its full public registration.
  • Discover Agents: Find ACTIVE agents matching ALL requested capabilities (AND semantics), deterministically ordered by match count then reputation.

What data it sees

Do you need an account

No: the server works without sign-in

Verifiable agent identity (content-addressed DIDs) + capability discovery — the passport and directory of the A2A economy. Part of the Viridis Agent Fleet: identity, trust, escrow, metering, arbitration, covenant, provenance, compute-carbon ledger, offsets — plus sellable services running on them. Durable state, machine-checkable invariants, free to call. Genesis receipts: github.com/jdhart81/viridis-agent-fleet/blob/main/docs/GENESIS_RECEIPTS.md

How to connect

How to connect agent-identity-registry to Claude

The server address to paste into Claude settings:

https://agent-identity-registry--hartjustin6.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect agent-identity-registry to ChatGPT

The server address to paste into ChatGPT settings:

https://agent-identity-registry--hartjustin6.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect agent-identity-registry to Cursor

The server address to paste into Cursor settings:

https://agent-identity-registry--hartjustin6.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (6)

Raw names from tools/list. Only developers need these.

register_agentRegister (or idempotently update) an agent identity. Returns a deterministic content-addressed DID. capabilities is a non-empty list of lowercase capability tags other agents can discover you by.
resolve_agentResolve an identity by agent_id or DID to its full public registration.
discover_agentsFind ACTIVE agents matching ALL requested capabilities (AND semantics), deterministically ordered by match count then reputation.
revoke_agentRevoke an identity: it disappears from discovery (terminal) but its record is retained for auditability.
list_registrationsList registrations, optionally filtered by status (ACTIVE|REVOKED).
describe_agentFleet-standard self-description.