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Meridian is accessed publicly through Context Protocol. Context supplies authentication, marketplace discovery, billing, spend controls, and the official remote MCP endpoint.

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Create a key

Create an API key at ctxprotocol.com/settings. Production keys begin with sk_live_. 
export CONTEXT_API_KEY="sk_live_YOUR_KEY"

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Key handling

  • Keep the key on a backend, server, or trusted local agent.
  • Never expose it in browser JavaScript.
  • Never place it in a URL or query string.
  • Never commit it to source control.
  • Rotate the key immediately if it appears in logs or screenshots.

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Billing modes

ModeContext methodBest for
Queryclient.query.run()Natural-language questions, grounding, managed orchestration
Executeclient.tools.execute()Exact method calls, raw structured output, explicit per-call spending controls
Execute availability is method-specific. Discover Meridian with mode="execute" before relying on direct execution. If a method is not Execute-eligible, use pinned Query mode.
Pricing and wallet settlement are owned by Context Protocol. Meridian documentation does not override the current price shown by Context discovery or execution responses.