"Samsung Pay" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check before your agent installs, connects or pays. install_check: before installing an npm or PyPI package, a GitHub repo, a skill or an MCP server, it answers allow / hold / block (known malicious packages from OSV, typosquats of official MCP servers, names that do not exist, install scripts, maintainer changes). check_service: live status, real price and payTo vs the catalogue listing for any x402 endpoint or MCP server, OFAC and stablecoin-freeze screening, uptime, tool-set changes, on-chain payers, an open Trust Score. preflight_payment decides allow / hold / block right before an x402 payment is signed; payment_status prevents paying twice; dispute_evidence builds a signed evidence pack. Every answer is signed into a public transparency log. Free, no account. Claude Code plugin: alalanet-guard.
IBAN, ISIN, VAT/tax ID, GTIN validation; timezone, geo, text, chain utilities. Pay per call
Search and read the Goldsky documentation from any MCP client. Goldsky provides onchain data infrastructure on 150+ chains, including Ethereum, Base, Solana, Hyperliquid, and Elysium: - Edge RPC: managed JSON-RPC. - Feeds: REST APIs for wallet balances, transfers, and token prices with USD values, plus Polymarket and chain datasets. - Subgraphs and Turbo pipelines: index and stream onchain data. Pay per request over x402 with USDC and no account, or use an API key.
Pay-per-call MCP tools for agents: 20 free calls a day, then pay per call with x402 (USDC on Base mainnet) or a prepaid spend key. 30 tools — text/data utilities, x402/EVM-native tools (decode an x402 challenge, verify a settlement receipt on-chain, EIP-712 hashing, ABI encode/decode, Merkle-proof verify, keccak256, EIP-55 address checks) and independent providers' tools priced from $0.001. Signed delivery receipts. No sign-up.
Ranks MCP endpoints by health and your own outcomes before you pay.
Search open model file records, inspect recorded SHA-256 hashes and license labels, and check estimated memory fit. Public reads need no account. Connect over Streamable HTTP. Public board and request tools require user consent. A matching hash checks bytes; fit and license labels do not establish successful execution or permission for every use. Hosted MCP: https://huggingbay.xyz/api/mcp Install: npx -y hugging-bay-mcp@0.1.13 Docs: https://huggingbay.xyz/docs Repository: https://github.com/barneywohl/hugging-bay
Lists paid fact routes and prices. Does not pay or call them.
Agent-native HOBO Works marketplace for fixed-price digital products, owner-requested services, free utilities, and per-run API tools. Agents discover products through MCP, A2A, REST, and machine-readable feeds; submit an owner brief for service work; and pay by Stripe or USDC. Products are HOBO Works-owned; 100% of owner payments go directly to the owner with no seller splits.
Pay-per-call company, SEC, recall, package and domain lookups, PDF to markdown, site audits (x402)
135 pay-per-call agent tools: agent intelligence, token risk, developer and AI data tools. x402
52 pay-per-call developer utilities for AI agents: JSON repair and formatting, CSV, Base64, URL, hashes, HMAC, UUID, cron, dates, units, IBAN/ISBN checks, colours, IP, semver, JWT and Markdown. USDC via x402.
180 pay-per-call APIs for AI agents: market, company, weather and dev tools, x402 on Solana.
Verified, pay-per-use API tools for AI agents through one authenticated connection.
Converts a local time in one IANA zone to up to 20 target zones with UTC offset, abbreviation and DST flag per target, and flags nonexistent or ambiguous local times at DST transitions. zone_info returns a zone's offsets and DST rules; overlap_hours finds shared working hours across zones. Pay-per-call via x402 ($0.005 USDC on Base); initialize and tools/list are free.
All 20 YourAITools agent APIs in one MCP server. Most tools free; pay with credits or x402.
Pink Agentic AI Payments: AI agents pay within spending rules (budgets, caps, approval). Sandbox.
Pay-per-call utilities for AI agents — extract, schema, screenshot, PDF, receipts/invoices, webhook relay. Prepaid credits or x402 USDC on Base.
Multi-protocol capability index: lookup, live refresh, pay-preflight, endpoint health.
Over 200 free UK-focused calculators, converters and generators as MCP tools: take-home pay and National Insurance for 2026/27, VAT, stamp duty, mortgages, loans, savings, inflation since 1988, currency with live rates, dates and working days with bank holidays, unit conversions, health calculators, colour and text utilities, encoding, hashing, JWT and TOTP, and validators for IBANs and Bitcoin and Ethereum addresses. Every tool is read-only, stateless and computes on the spot; nothing you send is stored. Each result links to its source page on hopi.co.uk.
Open marketplace of pay-per-call MCP tools: one endpoint exposes every listing, and any provider can list their own server… Non-custodial: payment goes straight from the agent's wallet to the provider's, and the platform is never a payee.
List, search, and inspect Ply Angular + Tailwind copy-in components.
Fax API and MCP server for AI agents. Fax US and Canada, pay per request with x402. No account.
Package vuln advisories from OSV.dev: CVEs, severity, fixes, manifest audit. Pay per call via x402.
Pay-per-call dev utilities (hash, base64, uuid, URL, time, NIP-19, BOLT11) via x402 USDC on Base.
Verified product categorization, npm/PyPI package checks, and locks. Free tier; pay after.
Pay-per-call x402 npm and PyPI package metadata, versions, search, download counts.
The marketplace for agents: 168+ AI models, 3,200+ APIs, one key. No subscription, pay per call.
Is this vendor down? Pay-per-call status for 1,400+ SaaS/cloud vendors, up to 25 per call (x402).
32 x402 pay-per-call tools: SEO, agent audits, JSON/text utils, OSINT. USDC on Base; $1=300 calls
Gamedev tools for AI agents: level design, renders, sprites, GLB optimizer. Pay per call with x402.
