APIHub

Marketplace of pay-per-call APIs for AI agents.

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What it can do

  • Apihub Search: Search for APIs and content gateways by capability, category, or price range. Returns matching services with endpoints/content rules and pricing.
  • Apihub List Services: List all available API services on the marketplace with their endpoints and pricing.
  • Apihub Get Service: Get full details for a specific API service including all endpoints, schemas, and pricing.

What data it sees

Do you need an account

An API key from the service settings is required

Marketplace of pay-per-call APIs for AI agents. Top up once with USDC credits, then call any listed API — gasless, walletless, metered per request. Includes onboarded providers and hundreds of x402-native APIs indexed from on-chain activity.

How to connect

How to connect APIHub to Claude

The server address to paste into Claude settings:

https://marketplace--apihub.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 APIHub to ChatGPT

The server address to paste into ChatGPT settings:

https://marketplace--apihub.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 APIHub to Cursor

The server address to paste into Cursor settings:

https://marketplace--apihub.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 (8)

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

apihub_searchSearch for APIs and content gateways by capability, category, or price range. Returns matching services with endpoints/content rules and pricing.
apihub_list_servicesList all available API services on the marketplace with their endpoints and pricing.
apihub_get_serviceGet full details for a specific API service including all endpoints, schemas, and pricing.
apihub_callMake a paid API call through the APIHub proxy. Requires sufficient wallet balance. Cost is automatically debited.
apihub_search_externalSearch external x402-protected APIs (not operated by APIHub, but callable via credits). Returns listings with endpoint counts, prices, and on-chain activity.
apihub_call_externalCall an external x402-protected URL (any provider in the marketplace or any x402 API). APIHub pays the provider on your behalf using the platform wallet and debits your credit balance for the exact amount. No wallet or gas required.
apihub_read_contentRead web content through a paid content gateway. Returns clean, structured text extracted from the URL. Use this for content services (service_type = 'content').
apihub_balanceCheck your credit balance, spending history, and total requests. Purchase credits via POST /v1/credits/purchase.