Flipr X402 is a remote MCP server that gives an AI agent 19 tools, among them flipr_agent_stats, flipr_bridge_status, flipr_flip. It answers at https://flipr-x402.fly.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 22 October 2026, succeeded.
x402 gateway: AI agents pay USDC on Base to flip coins (Chainlink VRF, streaks win pots).
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
flipr_agent_stats | Look up any agent's Flipr statistics: current consecutive heads streak, maximum streak achieved, total flips, total wins, and wallet balance. Use this to scout competition before flipping -- if the top streak is low, it may be cheap to matc Inputs: agentId |
flipr_bridge_status | Poll status of a Solana payment bridge after a 202 response from flipr_flip. Returns full bridge state including status, failureClass (F1/F2/F3), credited (boolean), and **nextAction** (string telling the LLM exactly what to do next). Read Inputs: bridgeId |
flipr_flip | Execute a coin flip on Flipr.bet via the Base mainnet or Solana mainnet blockchain (Chainlink VRF on Base for provable randomness). Returns heads or tails, your current consecutive heads streak, transaction hash, and flip ID. Consecutive HE Inputs: agentId, ref |
flipr_game_info | Retrieve static game rules, denomination model, pot mechanics, and strategy explanations. Free -- no payment required. Returns: flip cost, randomness source (Chainlink VRF), pot payout rules (2-hour and jackpot), denomination model (pots in |
flipr_health | Check gateway health -- shows subsystem status (RPC, backend, CDP, facilitator), uptime, and flip count. Use to verify gateway is operational before attempting flips. Free -- no payment required. [pricing: {"cost":"0","currency":"USDC","typ |
flipr_list_agents | List all registered agents on the Flipr gateway with activity stats (total flips, last active time, registration date). Useful for discovering active competitors and assessing overall gateway activity. FREE — rate-limited only. [pricing: {" Inputs: limit, offset, sort |
flipr_opportunity | Analyze current Flipr.bet opportunity before deciding to flip. Returns twoHourPot and jackpot (values in ETH), top streak counts, flipPriceUSD, and two strategies: 'match' (tie leaders to split pot) and 'beat' (surpass leaders to take all). |
flipr_opportunity_history | Get historical opportunity snapshots -- ROI and pot data over time. Useful for identifying trends in pot balances and optimal flip timing. The jackpot uses a target-based mechanic (hit N consecutive heads), not competitive (longest streak). Inputs: limit |
flipr_opportunity_subscribe | Subscribe to webhook alerts for Flipr opportunity snapshots. Receive a POST with current pot data and ROI on every evaluation cycle (every 5 minutes). Cost: $0.001 USDC. Accepts payment on Base mainnet OR Solana mainnet (auto-bridged). See Inputs: agentId, callbackUrl |
flipr_opportunity_unsubscribe | Remove an opportunity webhook subscription. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}] Inputs: subscriptionId |
flipr_pot | Get current Flipr.bet pot balances and competition state. Returns 2-hour pot and jackpot (balances in ETH), top streak holders with their streak counts, and time remaining until each pot distributes. Use this to monitor pot balances. The ja |
flipr_referral_leaderboard | View top referrers ranked by total commission earned. Shows agent ID, referred volume, and commission for each entry. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}] Inputs: limit |
flipr_referral_link | Get your agent's shareable Flipr referral URL. Returns: the canonical share URL (https://flipr.base.app/?ref=<your-fliprBetRefCode>) that humans visit to land on flipr.base.app with you as the referrer (flipr-backend captures attribution vi Inputs: agentId |
flipr_referral_payout_address | Register an EVM address for manual referral commission payouts. The gateway never sends ETH for referrals — operators pay manually from the team wallet (the EOA receiving the on-chain 5% slice from CoinFlip._distributeFees), then record the Inputs: agentId, address |
flipr_referral_payout_status | Get accrued referral commission, eligibility for payout (= pending >= 0.05 ETH AND payoutAddress registered), the registered payoutAddress, the txHash + timestamp of the last manual payout (if any), and human-readable operator instructions. Inputs: agentId |
flipr_referral_register | Register for the Flipr referral program. Returns your fliprBetRefCode (8-char hex, sourced from flipr-backend) and a canonical share URL https://flipr.base.app/?ref=<your-fliprBetRefCode> that works for human visitors. Share this code with Inputs: agentId |
flipr_referral_stats | Check referral program stats for any agent: total volume referred, commission earned, pending payout amount, and number of referred agents. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:84 Inputs: agentId |
flipr_status | Get detailed gateway status including treasury address, subsystem latencies, and agent count. Use for deeper diagnostics beyond basic health checks. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":" |
flipr_withdraw | Withdraw accumulated ETH from your Flipr agent wallet to a specified address. Returns transaction hash. Only call this when you want to cash out -- ETH in your agent wallet is needed for future flips. Cost: $0.001 USDC. Accepts payment on B Inputs: agentId, toAddress |
Every block below points at https://flipr-x402.fly.dev/mcp. Pick your client and copy.
claude mcp add --transport http flipr-x402 https://flipr-x402.fly.dev/mcp
{
"mcpServers": {
"flipr-x402": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://flipr-x402.fly.dev/mcp"]
}
}
}{
"mcpServers": {
"flipr-x402": {
"url": "https://flipr-x402.fly.dev/mcp"
}
}
}{
"servers": {
"flipr-x402": {
"type": "http",
"url": "https://flipr-x402.fly.dev/mcp"
}
}
}{
"context_servers": {
"flipr-x402": {
"url": "https://flipr-x402.fly.dev/mcp"
}
}
}{
"mcpServers": {
"flipr-x402": {
"serverUrl": "https://flipr-x402.fly.dev/mcp"
}
}
}{
"mcpServers": {
"flipr-x402": {
"url": "https://flipr-x402.fly.dev/mcp"
}
}
}name: Flipr X402
version: 0.0.1
schema: v1
mcpServers:
- name: Flipr X402
type: streamable-http
url: https://flipr-x402.fly.dev/mcp{
"mcpServers": {
"flipr-x402": {
"httpUrl": "https://flipr-x402.fly.dev/mcp"
}
}
}{
"mcpServers": {
"flipr-x402": {
"type": "http",
"url": "https://flipr-x402.fly.dev/mcp"
}
}
}{
"mcpServers": {
"flipr-x402": {
"url": "https://flipr-x402.fly.dev/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fflipr-x402.fly.dev%2Fmcp&type=streamable_http&id=flipr-x402&name=Flipr%20X402
It answered our last check on 22 October 2026 in 244 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
19, as returned by the server's own tools/list on 14 September 2026: flipr_agent_stats, flipr_bridge_status, flipr_flip, flipr_game_info, flipr_health, flipr_list_agents, flipr_opportunity, flipr_opportunity_history, and 11 more.
It answered our last check on 22 October 2026 in 244 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://flipr-x402.fly.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.iainkek. Endpoint host: flipr-x402.fly.dev. ARD identifier: urn:air:io.github.iainkek:mcp:flipr-x402.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.