The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Orbis MCP listing page.
MCP server for Orbis — gives Claude, Cursor, and any AI agent access to 2,800+ APIs with x402 USDC micropayments on Base. $0.01/call. No signup.
This MCP server connects your AI agent to the Orbis API marketplace. Your agent can:
Add to claude_desktop_config.json:
Config file location:
~/Library/Application Support/Claude/claude_desktop_config.json%APPDATA%\Claude\claude_desktop_config.jsonAdd to Cursor settings → MCP:
| Tool | Description |
|---|---|
browse_apis | Search and list available APIs on Orbis |
call_api | Call any API — x402 payment handled automatically |
register_agent | Register your agent wallet for tracking |
subscribe_to_api | Subscribe to an API for discounted access |
Orbis uses the x402 protocol — an open HTTP payment standard built on Base. When your agent calls an API:
402 Payment Required response with payment detailsNo wallets to configure for browsing. To make paid calls, provide your Base wallet via ORBIS_KEY.
| Variable | Required | Description |
|---|---|---|
ORBIS_KEY | No | Your Orbis API key from orbisapi.com — enables paid API calls |
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