"Amazon Pay" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Discover and pay for services from the Nevermined Catalog using a spend-capped budget.
13 pay-per-call tools for AI agents: LLM chat, summaries, sentiment, classification, keywords, rewriting, outlines, translation, embeddings, JSON extraction, image generation, transcription and image description. USDC via x402.
360 pay-per-call APIs for AI agents over x402 and MPP, settled in USDC on Base ($0.001-$0.25 a call, no account or API key). DeFi yields and market data, 10-chain wallet reads, wallet and token risk signals, sanctions screening, SEC financials, email/domain and web intelligence, AI text extraction, and signed proofs. Every answer names its sources and carries an evidence hash; a paid call that is not delivered is credited back. Built and run by UnyKorn LLC.
Generate images from Claude, ChatGPT, Cursor and Codex with 12 top AI image models and 10 tools: up to 4 images per call, SVG vectorization, editing and more. Remote MCP with OAuth, no API keys. Pay per image, no subscription.
Independent schema and rule check of AI agent output before you pay. Signed attestation and receipt.
Search open models, read license labels, and get hosted file links and SHA-256 hashes. Search Hugging Bay for model records, license labels, hosted-file availability and recorded SHA-256 hashes. Use it to shortlist local model files by task and an estimated RAM or VRAM budget, then inspect exact files before downloading. Connect to https://huggingbay.xyz/api/mcp over Streamable HTTP; public reads need no key or account. The hosted server also has a public Agent Board and tools to request missing models or features, with user consent for public posts and no promise of delivery. The npm package hugging-bay-mcp@0.1.6 has a smaller 16-tool stdio set without those request tools. Fit is an estimate; a SHA-256 match does not prove successful execution, safety or license permission.
Verify an artifact an AI agent produced — schema, emptiness, provenance and mandate authority — before you accept the work or pay for it. Ed25519-signed and verifiable without this service; 20 checks a day free, then 0.005 USDC per call over x402.
Generate images and videos with frontier AI models. Pay per use; credits never expire.
License-checked research archive and technical-spec search for AI agents. Pay per call via x402.
Get a real human to verify, decide, or improve an AI agent's work. Pay per review via x402 on Base.
A second opinion before your agent acts on one model's unearned confidence. One question goes to 3-4 different AI models that answer independently, then a chair returns a single verdict with a confidence score, the consensus and the dissent that held. A grounded tier buys evidence first (honeypot simulation, OFAC sanctions screen, page content, SEC profile, web results) and itemises what it spent. Pay-per-call with x402 in USDC on Base: no account, no API key, one free call a day.
ChainRay provides multi-chain blockchain data and intelligence for AI agents through 79 MCP tools across 57 supported networks, covering gas, chain data, wallets, DeFi, market, security, monitoring, and verifiable proofs. MCP access is available at https://mcp.chainray.online/mcp; paid HTTP capabilities settle via x402 on Base.
Privacy clinic + pay-per-call data APIs for AI agents via x402. Never pays or touches keys.
SEC filings, insider trades (Form 4), 13F institutional holdings, IPO calendar, macro indicators and FX rates. Pay-per-call in USDC on Base via x402 — no signup, no API keys.
AI infrastructure claim verification & CAPTCHA solving via x402 pay-per-query
Heartbeat and tokens/sec monitoring for self-hosted LLM servers (Ollama etc.), with down alerts.
BridgeNode — x402 pay-per-request AI inference. OpenAI-compatible API + MCP, Solana USDC, gas-free.
Pay-per-use tool API for AI agents. Free tier, x402 USDC micropayments, or API key.
Of 13 model launches from 23 Sept 2026 to 3 Oct 2026, 9 opened an API on day one, 7 of them.
Heartbeat and tokens/sec monitoring for self-hosted LLM servers (Ollama etc.), with down alerts.
