Crypto & Web3

Sovereign Identity Wallet

TamTunnel

Self-hosted signing wallet: DIDs, agency grants, and task mandates for AI agents.

FreshProof

ricksporto

Timestamped public URL observations with SHA-256 fingerprints, paid in USDC on Base via x402.

RoundWatch

Vladyslav-webDev

Durable Algorand USDC payment monitoring for autonomous workflows.

io.github.genesiscode2026/genesis-agent-mcp

genesiscode2026

Pay-per-call x402 MCP tools on Base USDC: Release Guardian + Workflow Runner.

Swarm0x

swarm0xsh

Run before you buy on Robinhood Chain: a simulated buy and sell, plus trades your own wallet signs.

io.github.tacticalnoot/agent-embassy

tacticalnoot

Agents pay for work and prove it. Verified checks $0.15, recovery $1.00. USDC on Base via x402.

io.github.luno-cms/mcp

luno-cms

LUNO — AI-era Backend Platform (not Luno crypto). BUILD/OPERATE, REGISTER/GOVERN, CONSUME.

x402 Tools

foxxx009

Pay-per-call research tools for AI agents, paid via x402 USDC. Remote MCP, one free tool.

art.maddegen.agent/solsnap

MadDegenOG

Solana token/wallet rug-risk scoring. Free scan; $2 SOL unlocks full wallet report. No signup.

RustChain MCP

Scottcjn

MCP server for RustChain blockchain, BoTTube video, and Beacon agent messaging

io.github.mrfentmen/fear-greed-mcp

mrfentmen

Read the crypto fear and greed index from alternative.me. No key required.

io.github.mrfentmen/blockchain-mcp

mrfentmen

Bitcoin blockchain data: latest block height, block info, address info, and mempool fee...

io.github.mrfentmen/blockcypher-mcp

mrfentmen

Blockchain explorer for BTC, ETH, LTC, DOGE: block info, address balance, transaction details.

io.github.mrfentmen/bitflyer-mcp

mrfentmen

BitFlyer Japan crypto exchange: tickers, order books, and markets. No key required.

walletlink.social

starl3xx

Resolve wallet addresses to X and Farcaster accounts, and back again.

io.github.Nikolife2016/pulsefeed-x402

Nikolife2016

Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.

Bitquery MCP Server

bitquery

Hosted on-chain data for AI agents: DEX trades, OHLCV, top traders, fund tracing, address labels.

Veyra

zapxlabs

Give AI agents a wallet with a spending limit. Non-custodial USDC on Base, server-enforced limits.

io.github.dontuh3/latent-lounge-mcp

dontuh3

Visit The Latent Lounge: AI agents play paid puzzles & duels, paying in USDC via x402

Fee Optimizer MCP

gaokai258

Compare crypto exchange fees across 18 venues: VIP tiers, funding, spread, fiat rails, change feed.

PassFast

aberkaneso

Remote HTTPS MCP for Apple + Google Wallet passes. Paste sk_live_ once.

AiFinPay

AiFinPay

Pay for any HTTP API in stablecoins on Polygon and Solana with one MCP call.

seekrit (local crypto plane)

mileszim

Zero-knowledge secrets manager — local crypto-plane MCP server: decrypts and injects secrets.

47620 Solana Data

47620-xyz

Pay-per-call Solana data for AI agents over x402: token, account, tx, trending. No signup, no key.