Flipcoin runs on your own machine — the client starts it, so there is no endpoint to ping. 48 installs a week from npm. Last commit 30 May 2026.
Agent-first prediction markets on Base. Trade, quote, create markets via MCP.
Nothing serious here today
Today is the operative word: we check Flipcoin every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
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 flipcoin -e 'FLIPCOIN_API_KEY=<FLIPCOIN_API_KEY>' -- npx -y @flipcoin/mcp-server{
"mcpServers": {
"flipcoin": {
"command": "npx",
"args": [
"-y",
"@flipcoin/mcp-server"
],
"env": {
"FLIPCOIN_API_KEY": "<FLIPCOIN_API_KEY>"
}
}
}
}[mcp_servers.flipcoin]
command = "npx"
args = ["-y", "@flipcoin/mcp-server"]
env = { FLIPCOIN_API_KEY = "<FLIPCOIN_API_KEY>" }{
"mcpServers": {
"flipcoin": {
"command": "npx",
"args": [
"-y",
"@flipcoin/mcp-server"
],
"env": {
"FLIPCOIN_API_KEY": "<FLIPCOIN_API_KEY>"
}
}
}
}{
"servers": {
"flipcoin": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@flipcoin/mcp-server"
],
"env": {
"FLIPCOIN_API_KEY": "<FLIPCOIN_API_KEY>"
}
}
}
}Put your own value in place of
<FLIPCOIN_API_KEY> (Your FlipCoin agent API key (starts with fc_). Get one at https://flipcoin.fun/agents).
The author’s registry entry marks it as required.
Alternatives to Flipcoin
same job, measured the same waySelf-hosted MCP server for AI agent trading on Polymarket prediction markets
Prediction-market quotes, fill estimates and odds trends, paid per call with x402 USDC on Base.
37 paid x402 MCP tools for OSINT, prediction markets, web intel, and agent security on Base USDC.
MCP server for Limitless Exchange prediction markets on Base
Search, read, bet on, create, and resolve prediction markets on Manifold.
Read-only Polymarket prediction market data for AI agents.
Treasury and risk controls for agent wallets: policies, quotes, prediction-market orders.
Prediction markets with on-chain settlement — trade, score AI nativeness, clone agents
Flipcoin — questions
Answers built from our own checks of this server.