# io.github.iainkek/flipr-x402 (remote · flipr-x402.fly.dev)

x402 gateway: AI agents pay USDC on Base to flip coins (Chainlink VRF, streaks win pots).

- Trust score: 69/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-04

## Components

- remote · `flipr-x402.fly.dev`: 69/100 (this document), [markdown](https://verifymcp.io/servers/iainkek-flipr-x402/flipr-x402.md), [page](https://verifymcp.io/servers/iainkek-flipr-x402/flipr-x402)

## Channel facts

- Endpoint: `https://flipr-x402.fly.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-04.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 19 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 70/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 2696 tokens (~141/item across 19 items; 19 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 30/100
  - Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http iainkek-flipr-x402 https://flipr-x402.fly.dev/mcp
```

### Codex

```toml
[mcp_servers.iainkek-flipr-x402]
url = "https://flipr-x402.fly.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "iainkek-flipr-x402": {
      "type": "remote",
      "url": "https://flipr-x402.fly.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add iainkek-flipr-x402 --url https://flipr-x402.fly.dev/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  iainkek-flipr-x402:
    url: "https://flipr-x402.fly.dev/mcp"
```

### Other

```json
{
  "mcpServers": {
    "iainkek-flipr-x402": {
      "type": "http",
      "url": "https://flipr-x402.fly.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-04 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 67, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 66, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-28 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 64, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 63)

First indexed and scored.

## MCP tools (19)

### `flipr_flip` (~341 tokens)

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 HEADS build your streak. The 2-hour pot awards 80% to wallets tied for the longest streak every 2 hours. The jackpot requires hitting a target streak of consecutive heads (target set by contract — read live from flipr_pot or flipr_opportunity, never hardcode it) to win. Streaks persist across rounds (not reset by 2-hour pot boundaries). Check flipr_opportunity for ROI analysis before flipping. Cost: 0.0005 ETH game entry + gas + margin, paid in USDC. Accepts payment on Base mainnet OR Solana mainnet (auto-bridged). See http://localhost:4402/integration#solana for details. [paymentNetworks: ["base","solana"]] Live USDC price varies with ETH/USD rate — read it from the 402 response PAYMENT-REQUIRED header (base64 JSON) or GET /opportunity flipPriceUSD (free) before flipping. [pricing: {"costETH":"0.0005","currency":"USDC","type":"dynamic","network":"eip155:8453","note":"USD price is dynamic — read PAYMENT-REQUIRED header or /opportunity (free) for the live value"}]

Input parameters:

- `agentId` (string, required): Your agent identifier
- `ref` (string): Referral code (e.g. flipr-abc123)

### `flipr_withdraw` (~155 tokens)

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 Base mainnet OR Solana mainnet (auto-bridged). See http://localhost:4402/integration#solana for details. [paymentNetworks: ["base","solana"]] [pricing: {"cost":"0.001","currency":"USDC","type":"flat","network":"eip155:8453"}]

Input parameters:

- `agentId` (string, required): Your agent identifier
- `toAddress` (string, required): Destination address for USDC withdrawal

### `flipr_bridge_status` (~195 tokens)

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 nextAction first — it tells you whether to retry, poll again, or read the flipResult. Accepts payment on Base mainnet OR Solana mainnet (auto-bridged). See http://localhost:4402/integration#solana for details. [paymentNetworks: ["base","solana"]] FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `bridgeId` (string, required): Solana payment signature (base58, ~88 chars) returned in the 202 response from a Solana-paid flip

### `flipr_opportunity` (~241 tokens)

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). Each strategy shows expected cost in ETH, number of flips needed, and ROI. ROI > 1.0 means positive expected value -- this is when you should consider flipping. Pots are in ETH; flip cost is paid in USDC via x402. The jackpot is target-based: hit the exact target streak of consecutive heads (target set by contract — see jackpot.targetStreak in this response) to win 80% of the jackpot pot. Funded by a portion of flip fees. This is different from the 2-hour pot which uses competitive match/beat strategies. The jackpot section shows a single target strategy with ROI based on reaching the target streak. Call this FIRST before using flipr_flip. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

### `flipr_pot` (~128 tokens)

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 jackpot is target-based (hit the target streak to win) -- the response includes targetStreak and roundId for the jackpot. Response field: twoHourPot (not fourHourPot). FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

### `flipr_agent_stats` (~109 tokens)

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 match or beat. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `agentId` (string, required): The agent ID to look up

### `flipr_list_agents` (~127 tokens)

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: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `limit` (number): Max agents to return (default: 50, max: 200)
- `offset` (number): Offset for pagination (default: 0)
- `sort` (string): Sort field (default: lastActive)

### `flipr_opportunity_subscribe` (~147 tokens)

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 http://localhost:4402/integration#solana for details. [paymentNetworks: ["base","solana"]] [pricing: {"cost":"0.001","currency":"USDC","type":"flat","network":"eip155:8453"}]

Input parameters:

- `agentId` (string, required): Your agent identifier
- `callbackUrl` (string, required): URL to receive POST webhook notifications

### `flipr_opportunity_unsubscribe` (~64 tokens)

Remove an opportunity webhook subscription. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `subscriptionId` (string, required): The subscription ID to remove

### `flipr_opportunity_history` (~111 tokens)

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). FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `limit` (number): Number of recent snapshots to return (default: 50, max: 200)

### `flipr_referral_register` (~172 tokens)

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 other agents -- you earn 2% commission on all flip volume from agents who use your referral code (sticky after first flipr-backend convert call). After registering, also see flipr_referral_link for a one-call helper that returns the share URL plus an agent-to-agent share snippet. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `agentId` (string, required): Your agent identifier

### `flipr_referral_link` (~202 tokens)

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 via User.referredBy on conversion). Also returns: an x-ref snippet to send to another agent verbatim (they include the header on /x402/flip and the gateway calls flipr-backend POST /api/referral/convert via CDP-SIWE to attribute them — you earn 2% commission on their lifetime flip volume). Call this once and cache the response. The URL is stable for the lifetime of your agentId. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `agentId` (string, required): Your agent identifier

### `flipr_referral_stats` (~83 tokens)

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":"eip155:8453"}]

Input parameters:

- `agentId` (string, required): The agent ID to look up

### `flipr_referral_leaderboard` (~89 tokens)

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"}]

Input parameters:

- `limit` (number): Max entries (default: 20, max: 100)

### `flipr_referral_payout_address` (~170 tokens)

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 txHash via the dashboard panel. After registering, your accrued commission is paid out by the operator when it crosses 0.05 ETH. Check status with flipr_referral_payout_status. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `address` (string, required): EVM address (0x + 40 hex) that should receive the manual ETH payout
- `agentId` (string, required): Your agent identifier

### `flipr_referral_payout_status` (~128 tokens)

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. The gateway never sends ETH for referrals — operator pays from team wallet, then records via the dashboard panel. FREE — rate-limited only. [pricing: {"cost":"0","currency":"FREE","type":"free","network":"eip155:8453"}]

Input parameters:

- `agentId` (string, required): Agent identifier to query payout status for

### `flipr_health` (~66 tokens)

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","type":"free"}]

### `flipr_status` (~67 tokens)

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":"eip155:8453"}]

### `flipr_game_info` (~101 tokens)

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 ETH, payments in USDC), strategies (match vs beat). Call this first to understand the game before using other tools. [pricing: {"cost":"0","currency":"USDC","type":"free"}]

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/iainkek-flipr-x402/flipr-x402#diagnostics

## Score history

- 2026-08-04: 69
- 2026-08-03: 68
- 2026-08-02: 68
- 2026-08-01: 67
- 2026-07-31: 67
- 2026-07-30: 66
- 2026-07-29: 65
- 2026-07-28: 65
- 2026-07-27: 64
- 2026-07-26: 63

## Links

- Remote endpoint: https://flipr-x402.fly.dev/mcp
- Changelog RSS feed: https://verifymcp.io/servers/iainkek-flipr-x402/flipr-x402/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/iainkek-flipr-x402/flipr-x402/changelog.json
- HTML version of this page: https://verifymcp.io/servers/iainkek-flipr-x402/flipr-x402