MCP Server Directory

Smarter Weather Developer Onboarding io.github.smarterweather/onboarding

Onboard to Smarter Weather from your agent: plans, docs, sign-up, API keys, MCP config, billing.

Your agent opens a real merchant account (go_live) and takes payments the same day. 3.9% flat.

FaultKey · CausalLayer io.github.smq9sn5jck-cloud/causallayer-mcp

Deterministic AI-liability attribution: signed, Bitcoin-anchored vendor/deployer/user fault split.

CausalLayer MCP io.github.smq9sn5jck-coder/causallayer

Deterministic AI liability attribution with Bitcoin-anchored proof certificates.

Serbia Invoices (SEF eFaktura national API) app.wishpool/serbia-invoice-mcp

Serbia SEF eFaktura invoices for AI agents: build UBL 2.1 SRB-CIUS, upload to SEF, query, cancel.

Parse receipts & invoices into structured JSON. Pay per call in USDC (x402 on Base), no API key.

Hive Barter io.github.srotzin/hive-mcp-barter

Multi-party agent barter — non-cash capability exchange with cryptographic receipts

MCP server for AbraFlexi ERP — invoices, contacts, products, bank transactions.

x402-list-mcp com.x402-list/x402-list-mcp

Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.

nestegg-calculators io.github.VladimirWrites/nestegg-calculators

90+ pure finance calculators: loans, investing, bonds, options, tax. Stateless, stores nothing.

Cross-chain swaps between Solana and Base for AI agents paid for via via x402 micropayments.

Zipp com.zippfeed/zipp

Multi-language crypto news with editorial sentiment + importance scoring; cites original publisher.

A Stockfish MCP server to allow an LLM to play chess against Stockfish

Singapore Payments (HitPay — PayNow QR) app.wishpool/singapore-payments-mcp

Singapore payments for AI agents — PayNow QR via HitPay. Never holds funds.

Search engine and payment rail for AI agents. 2,300+ services, semantic ranking.

MCP server for the Telnyx API — billing, phone numbers, and messaging

Zyberno stock valuation com.zyberno/zyberno

Brina Gap valuation, supply chains, screener and market score for US stocks. SEC data, free, no key.

agent-bank io.github.WirterNow/agent-bank

Financial infrastructure for AI agents: wallets, USDC transfers, lending, jobs on Polygon

Interact with Counterparty — the token protocol on Bitcoin. Query, compose, sign.

Self-custodial crypto + DeFi MCP for AI agents. Ledger-signed. EVM, TRON, Solana, BTC, LTC.

Colombia Invoices (DIAN factura electronica via Matias API) app.wishpool/colombia-invoice-mcp

Colombia DIAN factura electronica: AI agents issue and query e-invoices, stateless BYO.

Pay-per-call USDA nutrition for AI agents (x402 micropayments in USDC on Base).

ERC-20 token launchpad on Ethereum — deploy, presale, swap, and farm via AI agents

Decentralized AI inference (weather, deepfake detection, LLMs) with x402 USDC micropayments.