What Is SpendFuel? A Catalog of Paid Tools for AI Agents
SpendFuel is an early-stage, agent-first catalog of paid APIs and MCP tools, including x402 pay-per-call endpoints, with search, budget-aware recommendations and an MCP server.
Blog
SpendFuel Blog
Notes on agent commerce: finding paid APIs and x402 tools, budget-aware recommendations, and the SpendFuel MCP server.
How to Find x402 Tools with the SpendFuel API
Search the SpendFuel catalog by capability, category and price, get budget-aware recommendations, and read a tool's details with three public JSON endpoints.
Connect Your Agent to SpendFuel over MCP
Add the SpendFuel MCP server to Claude, Cursor or your own agent so it can search paid tools, get budget-aware recommendations and read tool details before it spends.