Quickstart

Get from OpenAPI to a live agent tool call in one sitting.

1. Claim a seat

Go to makecallable.com and sign in with a magic link while seats remain. If the cap is full, join the waitlist — you’ll get a place in line.

2. Create a project

In the dashboard, name a project. You’ll get:

• a public MCP URL (/mcp/<publicKey>)
• an API key (Bearer token for clients)
• a place to paste OpenAPI and set upstream credentials

3. Import OpenAPI JSON

Paste your OpenAPI JSON (YAML comes later). MakeCallable maps operations to MCP tools — params, body, and security schemes included.

You do not need a second “agent API.” Keep the REST API you already ship.

4. Set base URL + upstream secret

Point the project at the host agents should call. If your API expects a Bearer or API key, store it as the project’s upstream secret. MakeCallable proxies with that key — never with the MCP client key.

Private, localhost, and cloud-metadata hosts are blocked.

5. Install the MCP URL

Copy the install snippet for Cursor, or add a Claude custom connector (MCP URL + Request header Authorization: Bearer <apiKey>). ChatGPT custom MCP is OAuth/no-auth only — it cannot use MakeCallable’s Bearer model in MVP.

6. Make a real call

Ask the agent to use your tools. Confirm the call appears in the project log (and in the 7-day series / top tools).

7. Tag revenue (GSV)

When an agent-driven outcome closes — a hire, booking, purchase — tag a revenue / GSV event on the project. That’s how you prove the channel paid.

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