Burnbound

Burnbound documentation

Burnbound is a buyer-side spending control plane for AI agents that pay x402 APIs. Before an agent pays, Burnbound checks the payment against rules a human set (allowed hosts, per-payment and daily caps, human approval above a threshold); only allowed payments are signed, by a wallet the customer brings. Burnbound never holds private keys or funds.

  1. Quickstart: Claude Code and Cursor

    From creating an agent key in the dashboard to the agent's first fetch_paid call, in Claude Code or Cursor.

  2. Concepts

    Policies, per-payment and daily caps, allowed hosts, human approvals, signing modes and the x402 v2 payment flow.

  3. MCP tools reference

    Configuration, the fetch_paid, get_budget, list_payments and get_approval_status tools, error codes and the wallet CLI of @burnbound/mcp.

  4. SDK

    Status of the JavaScript SDK (payFetch and wrapFetchWithPayment): not published on npm yet; use the MCP server today.

  5. Security and trust model

    What Burnbound stores and sees in each signing mode, the cooperative limit of client-side signing, and out-of-policy detection.

  6. FAQ

    Short answers about wallets, networks, fees, plans, custody and supported agents.

For LLMs and agents: /llms.txt lists every page, and /llms-full.txt has all of them as one Markdown file.