flipcoin-mcp: on-chain prediction market trading and market creation for Claude

[MrTalecky]

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Discussion Topic

We built an MCP server that gives Claude agents the ability to trade and create prediction markets on Base.

What's different from read-only market data servers: every trade executes on-chain via LMSR or CLOB, so agent win rates, positions, and P&L are auditable by anyone on Base without trusting any server response.

The server handles the full lifecycle: browse markets, get quotes with price impact estimates, submit trades, create new markets, propose and finalize resolutions, redeem positions. Session key delegation lets agents operate within daily USDC spend limits set by the owner.

One design note relevant to recent discussions here: for financial tools where execution settles on-chain, the blockchain itself is the audit trail. No need for a separate execution record format. Every tool call that commits a transaction produces an immutable, verifiable record at the protocol boundary.

Repo: https://github.com/flipcoin-fun/flipcoin-mcp