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The Signa MCP (Model Context Protocol) server lets AI agents like Claude, ChatGPT, and Cursor search and analyze trademark data conversationally. Ask questions in plain language and get structured answers backed by real trademark-office data — no copy-pasting API responses into chat.

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Connect in 30 seconds

Signa runs a hosted MCP server. There’s no package to install and no local process to run — most clients just need one URL: 
https://api.signa.so/mcp
For Claude Code, that’s a single command: 
claude mcp add --transport http signa https://api.signa.so/mcp
Your client opens a browser to sign in, and you’re connected. See Connect your client for every other client (Claude Desktop, Cursor, ChatGPT, VS Code, and more).

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What you can do

Once connected, your AI agent can:
  • Search trademarks across production offices (USPTO, EUIPO, INPI France, IP Australia, CIPO, WIPO, IPOS, PRV, IPI, NIPO) — with phonetic and fuzzy matching
  • Research marks in depth — full detail by ID, prosecution history, version-level changes, related marks, coverage, source provenance, and batch lookups
  • Research owners, entities, attorneys, and firms to understand portfolios, corporate families, and filing patterns
  • Explore proceedings including TTAB oppositions and cancellations
  • Look up reference data — offices, jurisdictions, Nice classifications, goods/services wording, Vienna design codes, and renewal + opposition rules — to plan and clear filings
  • Manage monitoring — list, create, update, pause, resume, and preview watches, and read alerts and webhooks
  • Check your usage — current quota consumption, daily breakdowns, and account/plan details
For concrete prompts and end-to-end workflows, see Use cases. For the full surface, see the Tools reference.

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How it works

Your AI agent (Claude, ChatGPT, Cursor, …)
    │
    │  1. Discovers the auth server via the .well-known endpoint
    │  2. Opens a browser for OAuth login + consent
    │  3. Receives an access token (JWT) — or you pass an API key
    │
    ▼
POST https://api.signa.so/mcp
    │
    │  Authorization: Bearer <token>
    │  (JSON-RPC 2.0 over Streamable HTTP)
    │
    ▼
Signa validates the token, resolves your org,
and runs tools against live trademark data
Your existing Signa account and organization are used automatically. Every query is scoped to your org, exactly like the REST API. See Authentication & security for the auth model.

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Next steps

Connect your client

Step-by-step setup for Claude, Cursor, ChatGPT, VS Code, and more.

Use cases

Copy-paste prompts and multi-step recipes for real trademark work.

Tools reference

All 60 tools, grouped by area, with the scope each requires.

Authentication & security

OAuth vs API keys, scopes, org isolation, and safe-use guidance.