Peer Cash MCP

by zkp2p

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About

Prepare and manage custody-separated Base USDC cash-outs through Peer Cash using nine MCP tools.

Details

Author
zkp2p
Categories
Finance

Setup

Install Peer Cash MCP in your MCP client (Claude Desktop, Cursor, Windsurf, and others).

Repository: https://github.com/zkp2p/peer-cash-mcp

Follow the installation instructions in the repository README, then restart your MCP client.

An MCP server for agents that need to cash out Base USDC throughPeer Cash. It exposes live payout capabilities, oracle estimates, unsigned transaction preparation, receipt finalization, order reads, withdrawals, and top-ups.

The server never accepts private keys or submits transactions. Write tools return unsigned Base transactions for the host wallet to review, approve, sign, and confirm.

The repository is also anAgent Plugins 1.0package.plugin.jsonidentifies the package,skills/peer-cash/SKILL.mdprovides the portable workflow, andmcp.jsonstarts the published server without embedding credentials.

{ "mcpServers": { "peer-cash": { "command": "npx", "args": ["-y", "peer-cash-mcp"] } } }

The default environment is production and the public Base RPC is sufficient for normal reads. Optional environment variables:
- Callpeer_cash_capabilitiesbefore naming a payout platform or currency.
- Callpeer_cash_estimate. Treat it as approximate: the binding Chainlink rate resolves when a buyer fills.
- Callpeer_cash_preparewith a Base USDC amount in 6-decimal base units and one or more payout legs.
- Show the returned transaction plan and obtain explicit user approval.
- Submit each transaction in order through the host wallet and confirm it on Base.
- Callpeer_cash_finalizewith the confirmedcreateDeposittransaction hash.
- IfaccessPolicyRequiredwas true, callpeer_cash_prepare_access_policyand submit that transaction with the depositor wallet.
- Persist the returneddepositIdfor order tracking and recovery.

Unknown transaction outcomes must be inspected before any resubmission. Peer Cash errors include a code, retryability, remediation, and recovery evidence for this purpose.

Validate the portable package separately from the server test suite:

npx skills-ref validate skills/peer-cash

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