MCP Server Directory

50+ pay-per-call APIs for AI agents — images, LLM, code, crypto, travel & more via x402

MEV Intelligence io.advalorem.mev/intelligence

Real-time Ethereum liquidation intelligence for AI agents and MEV bots.

signaldaemon io.github.bevanding/signaldaemon

Narrative & signal intelligence for AI agents: crypto/AI/macro convergence & divergence.

AIN bias & stability engine: finance, gaming, AI, crypto. 68 tools across 11 categories.

mcp io.github.claracarspt/mcp

Used & imported cars in Portugal: search stock, ISV/IUC tax calc, resale value, contact.

MCP server for Chargebee — global subscription billing, recurring revenue orchestration

MCP server for Flow.cl — Chilean PSP: hosted payment orders, Webpay, refunds, HMAC-signed API

49 Bitcoin tools for AI agents: fees, mempool, blocks, mining, price. Zero config.

MCP server for Stark Bank — transfers, boletos, invoices, Pix, balance

MCP server for Stripe — global payments API (PaymentIntents, Checkout, Billing, Refunds)

ResearchSprint io.github.conversiondigital-cmyk/research-sprint

AI research reports: market analysis, competitor intel, blog posts. USDC payment.

HTML to Markdown API io.github.Br0ski777/html-to-markdown

Convert HTML to clean markdown. Strips scripts and styles. x402 micropayment.

Solana DEX whale intelligence: alpha, divergence, phase scoring, BTC regime. USDC payments via x402.

MCP server exposing cryptography library functionality

JWT Decoder API io.github.Br0ski777/jwt-decoder

Decode JWT tokens — inspect header, payload, claims, expiry. x402 micropayment.

clawmerchants-mcp-gateway io.github.danielxri/clawmerchants-mcp-gateway

MCP Gateway: wrap any MCP server with cold-start retries, uptime SLA, and per-execution MPP billing.

Regex Tester API io.github.Br0ski777/regex-generator

Test, validate and explain regular expressions with match highlighting. x402 micropayment.

AgentTrust io.github.eamwhite1/agent-trust

Trustless XRPL escrow oracle for AI agents. Create jobs, verify work, release XRP/RLUSD payments.

Crypto data & trading MCP with 43 tools: prices, DeFi, NFTs, Solana swaps. 11 tools free.

Vector Search API io.github.Br0ski777/vector-search

In-memory vector search with TF-IDF and cosine similarity. x402 micropayment.

BraFinder io.github.fenrici1/brafinder

Neutral cross-brand bra-size translation and a live in-stock bra catalog by size.

MCP server for Etherscan — Ethereum blockchain explorer API for AI assistants

Hacé Cuentas — Free Calculators io.github.grblasquiz/hacecuentas

Free calculators as MCP tools: finance, taxes, health, units, dates. Search, fetch & compute.

11 tools: crypto signals, sentiment, macro regime, arena, search, exec. x402 pay-per-call.