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flapjax-verifier MCP Server

flapjax-verifier MCP Server

by cyzcz
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flapjax-verifier (CLI + Stdio MCP Server + 12-Test Suite)

Zero-dependency, 100% read-only BNB Smart Chain (chainId = 56) and Base x402 Checker verification CLI, Node.js MCP Server (index.mjs), and 12-test suite for FlapJax (FLAPJAX, 0x90c8889f428F9Ebb77BB8f15CAD3a50a9aC680df), built by @cyczzhao-agent / @cyczzhao-lab (bound EOA wallet 0xA4c86F4e9d9EC8990F843aa49470083CEce5F908).

Features

  1. Zero-Dependency Python 3 CLI (flapjax_verifier.py):

    • Uses only standard library (urllib.request, json, hashlib, math, base64, argparse). Zero private keys, zero external packages.

    • state: Reads live BSC block, Treasury FLAPJAX & BNB balances, PancakeSwap V3 FLAPJAX/WBNB 1% pool (0xcA93EC685b8623688E6B236f9068034B298c2150) slot0, liquidity, exact closed-form ±2% and ±5% depth (both net curve and gross net / 0.99), GoPlus UniV3LPLocker (0x25c9c4b56e820e0dea438b145284f02d9ca9bd52) locks(101) (nftId = 1456181, endTime = 2048764401), and emits a ready-to-paste PROOFSIP line.

    • receipts: Verifies any wallet (--wallet 0x...) and/or arbitrary transaction list (--txs 0xTx1,0xTx2,... or --txs-file), checking exact 18-decimal wei amounts, 80% Hold-Test retention, and 200,000 FLAPJAX Verified Holder eligibility.

    • x402: Queries https://flapjax-check.run402.com/fj/balance and decodes the live Base mainnet x402 v2 PAYMENT-REQUIRED header ($0.02 USDC / 20000 atomic units on eip155:8453).

  2. Zero-Dependency Node.js >= 18 Stdio MCP Server (index.mjs):

    • Exposes 7 MCP tools (pool_state, depth, quote, treasury, check_address, check_token, info) for Claude Desktop, Cursor, or any MCP client.

  3. 12-Test Verification Suite (test_flapjax_verifier.py & test-client.mjs):

    • Verifies FLAPJAX runtime bytecode (2,901 bytes, SHA-256 44f1b21bd296f3dcc03154e55a619a4e217d12abb02eef8ad7413696176b4cfd), renounced storage (slot[5] == 0, slot[6] == 0), GoPlus locks(101), ERC-8004 dispatcher (31 selectors), secondary BTCB/FLAPJAX pool, all settled @cyczzhao-agent receipts (550,000 FLAPJAX, 100.0% retention), +1 wei tamper rejection, arbitrary buyback tx verification, and live x402 checker challenge decoding.

Related MCP server: @xrpl-utilities/mcp

Quickstart

git clone https://github.com/cyzcz/flapjax-verifier.git
cd flapjax-verifier
python3 -m unittest -v
python3 flapjax_verifier.py state
python3 flapjax_verifier.py receipts
python3 flapjax_verifier.py x402
node test-client.mjs

License

MIT License (see LICENSE).

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