Spend runs on your own machine — the client starts it, so there is no endpoint to ping. 71 installs a week from npm. Last commit 26 May 2026.
Agents are not bots. PayClaw proves it — then lets them pay. Badge + Spend on existing Visa rails.
What changed 1
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.
What the code does
We read the source, 5 d ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
пакет @payclaw/mcp-server ссылается на payclaw/mcp-server
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add spend -e 'PAYCLAW_API_KEY=<PAYCLAW_API_KEY>' -- npx -y @payclaw/mcp-server{
"mcpServers": {
"spend": {
"command": "npx",
"args": [
"-y",
"@payclaw/mcp-server"
],
"env": {
"PAYCLAW_API_KEY": "<PAYCLAW_API_KEY>"
}
}
}
}[mcp_servers.spend]
command = "npx"
args = ["-y", "@payclaw/mcp-server"]
env = { PAYCLAW_API_KEY = "<PAYCLAW_API_KEY>" }{
"mcpServers": {
"spend": {
"command": "npx",
"args": [
"-y",
"@payclaw/mcp-server"
],
"env": {
"PAYCLAW_API_KEY": "<PAYCLAW_API_KEY>"
}
}
}
}{
"servers": {
"spend": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@payclaw/mcp-server"
],
"env": {
"PAYCLAW_API_KEY": "<PAYCLAW_API_KEY>"
}
}
}
}Put your own value in place of
<PAYCLAW_API_KEY> (Your PayClaw API key (get one at payclaw.io)).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
PAYCLAW_API_URL (PayClaw API URL (default: https://payclaw.io)).
Alternatives to Spend
same job, measured the same wayWallets and rails that let AI agents spend money safely.
Lets an agent pay for x402 APIs in USDC on Arc, under a spending policy it cannot change.
Agents are not bots. Prove it. MCP-native identity declaration for authorized agents.
Lists paid fact routes and prices. Does not pay or call them.
Email open tracking for agents: add a pixel, register the send, read back who opened it
Local-first, multi-provider tool that captures LLM API spend and exposes it to coding agents via MCP
Wallet for AI agents with on-chain spending limits and owner approval over the limit
Trazum as an MCP server: let an agent price and budget its own prompts before it sends them.
Spend — questions
Answers built from our own checks of this server.