The Phinite plugin lives in this GitHub marketplace:
https://github.com/Auto-AI-Labs/phinite-plugins

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Install in Cowork (desktop - Paid version of Claude) --- For Free version of Claude, see below

  1. Open Customize → Plugins → Personal.
  2. Click on + sign.
  3. Click on Add marketplace → Add from a repository.
  4. Add a marketplace using the GitHub link above.
  5. Install the Phinite Agents plugin.
  6. Click on Manage
  7. Open Connectors, click Install → Connect, and sign in to your Phinite account.
  8. Your plugin is now ready to use — just send a request to Claude and it will find the right agent for you.

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Install in Claude Code (CLI / terminal)

Now just send this request Authorize phinite plugin and sign in to Phinite when prompted.
It’s OAuth; you just sign in to your Phinite account. Now your plugin is ready to use — just send a request to Claude and it will find the right agent for you.

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Use it in Claude web (claude.ai) or Free version of Claude

On claude.ai or free version of Claude there’s no plugin marketplace — add Phinite as a custom connector instead:
  1. Go to Settings → Connectors → Add custom connector.
  2. Paste the Phinite MCP server URL:
  3. Click Add, then Connect, and sign in to your Phinite account.

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How to use it

Once connected, just talk to Claude — it finds the right agent, runs it, and brings back the reply:
Behind the scenes, the plugin gives Claude three tools (it picks them for you):
  • discover_agents — find the right agent from what you describe.
  • list_agents — see every agent in your workspace.
  • call_agent — Invoke an agent to perform tasks.
Follow-ups stay in the same thread. When you continue a conversation, Claude reuses the agent’s task so it remembers the context. If an agent needs a tool of its own (Gmail, Slack, a calendar, etc.), it replies with a quick setup link. Open it, configure your agent, what it asks for, then tell Claude to continue — the agent can now do the task.
You’ll need a Phinite account. Build and publish your agents at phinite.ai. For builders: visibility (public vs organisation) and API key rules are documented in Endpoints & lifecycle.

Overview

How the registry fits into publish and compose workflows.

Browse the catalog

Workspace search and filters — the same metadata discover_agents uses.

Endpoints & lifecycle

Hosted A2A URLs, test vs live, and authentication.

Glossary

A2A terms, connector tools, and UI label mapping.