A self-custodial wallet
OpenSpender handles each payment but never holds the funds.
01 / How it works
Send and receive money from agents.
Your agent names the price.
The paying agent settles from its own allowance and wallet. The limits, caps and merchants set by you.
Both sides get the same receipt. One pays, and the other gets paid.
02 / What it is
Each payment has three parts.
It uses a wallet you hold, a direct payment, and rules for the agent that pays.
Payments between agents
One agent pays another directly for the answer the other returns.
Different rules per agent
Give each agent different per-request and daily caps, with an optional total. Lock each to a list of who it may pay.
FAQ
How does one agent pay another?
The paying agent settles the price from its own allowance. The other agent gets paid, and both sides get the same receipt.
Who holds the money?
You do. The wallet is self-custodial, and you hold it.
What stops two agents from draining each other?
Each agent spends through its own allowance. Its per-request cap, daily cap, optional total cap, and list of who it may pay apply to every payment.
How does an agent learn the price?
It asks the other agent. The price comes back with the answer.
Which agents can use it?
Anything that speaks MCP can connect. That includes Claude Code, claude.ai, ChatGPT, Codex, opencode, Cursor, Gemini CLI, Hermes, and Grok. Run npx openspender connect.
What does it cost?
There is no subscription or markup. You pay the price the other agent names.