Search: usdc
Search MCP servers and agent skills by name, description, category or topic — 81 results.
blockrunai/blockrun-mcp
Access 30+ AI models (GPT-5, Claude, Gemini, Grok, DeepSeek) without API keys. Pay-per-use via x402 micropayments with USDC on Base.
xpaysh/awesome-x402
Curated directory of x402 payment protocol resources, MCP servers, and tools for HTTP 402-based USDC payments on Base, Arbitrum, and other EVM chains.
Swarmwage/swarmwage
Open MCP-native agent hire protocol — discovery + hiring + reputation layer above x402 payment rails. Find specialized agents, hire them with one function call, settle in USDC on Base. Sub-second sync, on-chain receipts via EIP-3009, zero protocol fee. Live mainnet 2026-05-10.
cammac-creator/ibanforge-mcp
Pre-payout counterparty screening for AI agents: IBAN validation + OFAC/EU/UN sanctions screening + Swiss BC-Nummer clearing + SEPA/VoP reachability + risk score. MCP-native (stdio via `npx -y ibanforge-mcp` or Streamable HTTP at `api.ibanforge.com/mcp`). Free tier 200 req/month, pay-per-call USDC (x402) beyond.
rhein1/agoragentic-integrations
Agent-to-agent marketplace where AI agents discover, invoke, and pay for services from other agents using USDC on Base L2.
x402node/x402-mcp
Exposes 100+ x402-paid APIs to AI agents via auto-discovery from Coinbase Bazaar. Handles USDC micropayments on Base mainnet.
elisymlabs/elisym
AI agent discovery and marketplace on Nostr with Solana payments (SOL, USDC). NIP-89 discovery, NIP-90 jobs, NIP-44 v2 encryption, on-chain micropayments.
true402/mcp-server
Pay-per-call AI + web + on-chain tools for agents over x402 (USDC on Base) — no accounts, no API keys; the wallet is the identity. 11 tools incl. token rug/honeypot safety (0–100 score, risk band, buy/sell simulation), new-pairs / liquidity-pull / whale-swap signals, SEO/GEO audit, web extract, link preview, robots & security-headers checks, and LLM inference. Tools auto-discover from the live cat
toadlyBroodle/satring
Discover and compare L402 + x402 paid API services from satring.com, the best curated Lightning and USDC API directory.
thebrierfox/the-stall
209 pay-per-call AI capabilities via x402 USDC micropayments on Base mainnet. Covers US/global equities, crypto/DeFi analytics, options chains, dealer GEX, macro indicators, congressional trades, prediction markets, on-chain intelligence, EVM & Solana analysis, SEC filings, weather, aviation, and more. No API key — pay per call from $0.001 USDC.
roamzy-io/mcp-server
Buy and manage a global eSIM through chat. One eSIM for 192 countries, per-MB billing in USDT/USDC across TRON, Solana, BSC, Polygon, Optimism, Arbitrum, TON. Anonymous-flow by default — no account required. [npm](https://www.npmjs.com/package/@roamzy/mcp-server)
cinderwright-ai/cinderwright-api
x402 Discovery Hub. Search engine for the agent economy with 1450+ services indexed. Pay with USDC on Base via x402.
hifriendbot/agentwallet-mcp
Permissionless wallet infrastructure for AI agents. 29 tools for wallet creation, transaction signing, token transfers, and x402 payments across all EVM chains and Solana. No KYC, no API keys — agents pay with USDC.
DIALLOUBE-RESEARCH/hypernatt-terminal
BTC Decision Terminal for AI Agents — live vault-backed signals, on-chain proof, cross-chain swap. MCP server hosted at https://hypernatt.com/mcp/protocol. Verify in real time. Mimo BTC/USDC vault on Hyperliquid. 11 MCP tools: free manifest + Li.Fi swap + NDAT; paid Decision Core via x402 $0.01 USDC on Base. Quickstart: https://github.com/DIALLOUBE-RESEARCH/hypernatt-terminal/blob/main/docs/quicks
krystiangw/agenticpay
Open-source x402 micropayments stack for MCP. Pay-per-tool-call USDC settlement on Solana via the first open-source self-hostable facilitator (no x402.org dependency). Includes TypeScript SDK, CLI, paywall middleware, hosted devnet endpoint, and a live Claude Opus demo. `npm install @agenticpay/sdk`
clicks-protocol/mcp-server
Autonomous USDC yield for AI agents on Base. 9 tools: register agents, split payments 80/20 (liquid/yield), withdraw anytime, simulate splits, check APY, and track on-chain referrals. Non-custodial, no lockup, MIT licensed. `npx @clicks-protocol/mcp-server`
whiteknightonhorse/APIbase
Unified API hub for AI agents with 56+ tools across travel (Amadeus, Sabre), prediction markets (Polymarket), crypto, and weather. Pay-per-call via x402 micropayments in USDC.
agentmetal/mcp
Provision, SSH into, run commands on, and manage Linux VPSes from an agent — pay USDC over x402 or by card over HTTP 402, a running box in under 60s. No signup, no API key to buy.
0rkz/byte-mcp-server
PayPerByte — per-byte data marketplace for AI agents on Arbitrum. Discover publishers, evaluate on-chain Proof-of-Quality Score (PQS), subscribe + pay per request in USDC via x402 gateway. 15 tools, zero API keys.
Kali123411/k402-mcp
Agent-payable APIs settled on Kaspa L1: text tools (summarize, schema-guaranteed extract, classify, rewrite), web reading, embeddings + semantic search, live Kaspa chain data, GPU LLM tiers, covenants-as-a-service, and RISC Zero zk proving with cycle-exact quotes. Pay per call in KAS, BTC, LTC, DOGE, BCH, DASH, ETH, or USDC — fractions of a cent, no account or API key. `pip install k402-mcp`
gblinproject/GBLIN-MCP
Treasury standard for AI agents on Base mainnet. Park idle USDC in a cbBTC/WETH index with Crash Shield protection, JIT-swap to USDC for x402 invoice payments.
wuzenghai616-lang/goldbean
x402 Micropaid API Marketplace — 10 AI tools for agents. Crypto prices, web search, weather, image-gen, LLM chat, code execution, translation, sentiment analysis, and QR code generation. Pay-per-call with USDC on Base (no API keys, no registration). Install with \
pgalyen1987/gate402-mcp
Pay-per-call agent APIs over x402 (USDC on Base): per-token LLM inference (Llama 3.1/Qwen/Mistral), per-second GPU/CPU compute, on-chain/DeFi + SEC-EDGAR + news data, and clean-Markdown/Cloudflare-stealth web scraping. Signed receipts, no signup — auto-claims a free-tier key. Install via `npx -y gate402-mcp`.
Pentagonal-ai/pentagonal
AI-powered smart contract security forge with 8-agent adversarial pen test. Generate, audit, fix, and compile contracts across 8 chains (Ethereum, Solana, Polygon, Base, Arbitrum, Optimism, BSC, Avalanche). Token intelligence with honeypot detection. x402 USDC payments for autonomous agents.
Claynsn/agent-discovery-mcp
Minimal MCP server (~250 lines TS) for ERC-8004 agent discovery + x402 payment. Three tools: `find_agents_by_skill` (via 8004scan public API), `get_agent_card`, `call_agent_with_payment` using Coinbase's official `x402-fetch`. Direct EOA signing — no smart account, no bundler, no relay. Works with Claude Code, OpenClaw, Cursor, Cline. USDC on Base/Ethereum + testnets, MIT.
MoltyCel/moltrust-mcp-server
Trust infrastructure for AI agents — register DIDs, verify identities, query reputation scores, rate agents, manage W3C Verifiable Credentials, and handle USDC credit deposits on Base.
MyMedi-AI/mymedi-ai-mcp-server
Healthcare billing AI for agents: ICD-10/CPT/HCPCS code lookup (81,769 codes with RVU + OPPS pricing), prior auth prediction, medical NER, claims validation, denial-risk scoring, HIPAA compliance auditing, and NPI/drug enrichment. 20 tools, 10 free credits then pay-per-call via credits or anonymous USDC (x402). `npx @mymedi-ai/mcp-server`
JessieJanie/skim402
Convert any URL into clean, agent-ready Markdown with structured metadata (title, byline, published date, language). Pay-per-use via x402 (USDC on Base) — no signup, no API keys. Single tool `read_url`. Install via `npx -y skim-mcp`.
daedalusdevelopmentgroup/ddg-agent-payable-services
Pay-per-call x402 gateway: one MCP server for 90+ agent tools (utilities, DNS/WHOIS, blockchain RPC, market data, prediction markets, DEX data, security audits) plus an OpenAI-compatible LLM gateway. USDC on Base, free-trial calls per agent. `pip install ddg-agent-services-mcp` or remote `https://mcp.daedalusdevelopmentgroup.com/mcp`.
Zenidp/solinkify-mcp
Agentic payments on Solana: let an agent discover x402-priced endpoints, pay HTTP 402 paywalls in USDC, manage pre-paid balances and subscriptions, and buy datasets or settle store checkouts — 15 tools behind fail-closed spending caps ($1 per payment, $10 per day by default). Non-custodial: payments lock in a program-owned escrow and release 99% to the creator. Listed on the official MCP registry
Nodeflare-app/nodeflare-mcp
Pay-per-request JSON-RPC on 23 EVM chains (Ethereum, Base, Arbitrum, plus young chains Robinhood Chain, Plasma, Ink, Zircuit) from independent bare-metal nodes. Free reads with no key; heavy methods (eth_getLogs, trace, debug) via a free API key or x402 USDC pay-per-call on Base/Polygon/Arbitrum. In the official MCP Registry. `npx -y nodeflare-mcp`
mohamedkuch/utilia-solana-agent
Read-only Solana transaction preflight and agent media tools: live priority fees, simulation, failure diagnosis, token-risk evidence, PDF-to-Markdown, and audio normalization. No API key; remote MCP calls use x402 USDC on Solana ($0.002–$0.01/call). Install via `npx -y utilia-solana-agent@0.5.7` or use remote MCP at `https://api.utilia.ink/mcp`.
hshintelligence/agent-scrape
Pay-per-call web scraping for AI agents via x402 micropayments on Base. Six tools: scrape, extract structured data, screenshot, metadata, browser session, workflow. No signup, no API keys — just USDC. HTTP + MCP transports.
plagtech/spraay-x402-mcp
Pay-per-call onchain data, AI models, and batch USDC payments on Base via x402 micropayments. 9 tools including swap quotes, token prices, wallet balances, ENS resolution, and multi-recipient batch transfers.
stagproject/sec-filings-mcp
SEC EDGAR MCP for agents: search 10-K/10-Q, free sample preview, full filing JSON via x402 USDC on Polygon. xpay: `sec-edgar-filings`. Trial without xpay key: [docs](https://github.com/stagproject/sec-filings-mcp/blob/main/docs/TRY_WITHOUT_XPAY.md). Registry: `io.github.stagproject/sec-filings-mcp`.
GTCC777/pulsenetwork-mcp
One MCP server exposing 66 specialized intelligence APIs (660+ endpoints) — finance, crypto, legal, immigration, healthcare cost, real estate, tax, climate, sports, science, and more — each an x402 pay-per-call tool in USDC on Base and Solana. Includes a `discover` meta-tool over the whole network and a cross-vertical referral graph. No API keys. `npx mcp-pulsenetwork`
eliottreich/taskbounty-mcp-server
MCP server for [TaskBounty](https://www.task-bounty.com). AI agents fix GitHub bugs (every fix ships with a regression test) and raise test coverage on your codebase. Posters draft and fund bounties from chat (Stripe Checkout); solvers submit PRs verified end-to-end in a sandbox. Paid in USDC, ETH, or BTC. 11 tools.
rascal-3/chainanalyzer-mcp
Multi-chain AML risk scoring and sanctions screening for AI agents. 76+ detection rules, ML anomaly scoring, and Neo4j graph analysis across Bitcoin, Ethereum, Polygon, Avalanche, and Solana. Pay-per-request via x402 USDC on Base or Solana ($0.003–$0.05). `npx chainanalyzer-mcp`.
thoughtproof/thoughtproof-mcp
Adversarial multi-model reasoning verification for AI agents before trades execute. Claude, Grok, and DeepSeek challenge each decision — returns ALLOW or HOLD with JWKS-signed attestation. x402-gated on Base (USDC). Part of the 4-issuer Combined Attestation Standard with InsumerAPI, RNWY, and Maiat.
omniologynow-rgb/mcp-server
Live AI agent contest platform on Solana mainnet. Compete in skill tournaments (ART, STORY, JOKE) for real USDC payouts via on-chain Anchor smart contract.
forgemeshlabs/coinopai-mcp
Local stdio MCP server for x402-powered paid crypto intelligence: preflight checks, trade decisions with `decision_id`, later audit against real prices, risk state, signal history, and agent automation search over USDC micropayments on Base.
Younghef/nutriref-api
USDA FoodData Central nutrition for AI agents — pay-per-call in USDC on Base via x402. Four tools (search, detail, compare, recipe) at $0.001–$0.005 per call. No signup, no API keys; MCPB-packaged for one-click install.
jf-cmyk/blocksize-agentic-payments-mcp
Read-only Blocksize market-data discovery MCP package. Search instruments, inspect pricing and docs, and build x402 HTTP URLs for paid live data with USDC settlement on Solana and Base.
goodmeta/intelligence-mcp
Agent payments ecosystem intelligence. Scans GitHub, Hacker News, and npm for activity across AP2, ACP, x402, MPP, and UCP protocols. Returns scored opportunities with recommended actions. Free protocol comparison + paid scan via x402 USDC.
untitledfinancial/dpx-mcp
Settlement protocol MCP server for institutional cross-border USDC transactions on Base mainnet. 14 tools: 10-source Stability Oracle (macro, FX, ESG, climate, supply chain, earth systems), ESG scoring with 6 institutional providers, FX quotes, Verification of Payee, and USDC settlement execution. x402 pay-per-call intelligence. MiCA-aligned, GENIUS Act compatible. `npx @untitledfinancial/dpx-mcp`
forum-labs/payfetch
Non-custodial paying-fetch client for agents that pay APIs over HTTP 402 (x402, USDC on Base). The operator sets hard per-call/per-day/per-host spend caps, an approval threshold, and allow/deny lists, with an append-only receipt for every attempt; the agent can't raise its own limits. `npx -y -p @forum-labs/payfetch payfetch-mcp`
sukrutkrdg/x402-bazaar-mcp
The Base token-safety toolkit for agents: the only B20 (Base-native token) freeze/seize/rug suite, plus pre-trade GO/HOLD/STOP gates, honeypot/sellability, wallet + approval audits, sign-guard, prices and Claude-written AI reports. 90+ pay-per-call tools over x402 (USDC on Base), free tier, no API keys. `npx x402-bazaar-mcp`
forgemeshlabs/x402-notary-mcp
Cryptographic receipts for AI outputs: notarize any model inference with a signed Ed25519 attestation, sha256 content hash, and Merkle chain-anchor on Base or Solana. $0.001 per call via x402 USDC micropayments; verification is free and needs no wallet. Notarizes the hash, never your prompts. `npx -y @forgemeshlabs/x402-notary-mcp`