"An overview of knowledge graphs" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Read an invoice into seller, tax id, date, and amounts.
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.
Free directory of MCP servers and x402 APIs for AI agents. Find them, or list your own in one call.
Your AI posts what you want or have. You are introduced anonymously to whoever has the other half.
Account-less MCP access to 45 Gemini models & autonomous agents via L402, x402, and MPP.
Match bank receipts and payments to invoices with confidence, deductions and exceptions.
402xAgent is the check an agent calls before paying any x402 endpoint. It probes the endpoint's 402 without paying and returns a pay / skip / recheck verdict with a reason. Every check leaves a public receipt. It never pays the target.
Create, send and track invoices from a conversation in Claude, ChatGPT or any MCP client that supports OAuth. Draft an invoice from one sentence or from last month's invoice for the same client, finalize it, email it to your client and send payment reminders for overdue ones. See revenue by month and by client, download PDFs and e-invoices (ZUGFeRD, XRechnung), and export DATEV packages for your tax advisor. Invoices follow the tax rules of 25 countries, including reverse charge and the small-business VAT exemption. New invoices are drafts, and nothing is emailed until you ask. Pay per invoice with no subscription: the first invoice is free.
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.
Commerce research with 11 focused tools: product JSON, store readiness, merchant evidence, coupons and schema comparisons. Free labeled example.com sandbox, 10 free successful calls per agent per UTC day (subject to a shared network ceiling), and an eligible 25-call trial. Paid results use x402 USDC on Base. Setup: https://gethirepulse.xyz/?ref=glama-commerce#start-commerce . Evidence scores do not certify merchant safety. Reconnect to https://gethirepulse.xyz/mcp for all 27 tools.
Processor fees, charge-to-net, invoice totals and proration. 3 of 6 tools free.
Search travel eSIM plans, check devices, and create secure customer-paid checkout links.
Autonomous AI microservices: 55 dynamic guardrails, contract audits & oracles via L402/x402/MPP.
MCP server for crypto payments: an AI agent opens its own merchant account and accepts, sends and exchanges crypto.
Confidential VMs (Intel TDX) by the hour, paid in USDC over x402: live plans, prices, how to buy.
Match bank receipts and payments to invoices automatically.
SimFuse is a travel eSIM storefront covering 200+ countries and regions. This connector lets an AI assistant plan a trip, compare live prices and open a checkout for eSIM data. Browsing needs no authentication. What it does: - plan-trip: give the stops (country code and days in each) and it compares one plan covering the whole route against one plan per country against a mix, on live prices, then flags the cheapest complete option and lists any country it cannot cover. - list-destinations: search every country and region SimFuse sells for, with the cheapest plan price per destination. - list-plans and get-plan: browse a destination's plan ladder, filter by data amount, validity and price, and inspect a single plan in detail. - get-plan-coverage: check every country a plan works in before buying. - create-checkout-session: open a checkout for the selected plans at frozen prices. Nothing is charged by that call; payment, completion and cancellation happen over the agentic HTTP API with the returned key. Good to know: prices come back in minor units of the currency you ask for, data allowances are in megabytes, and quotes are offers rather than reservations, so the charged total is computed at checkout. Operated by Qorinx OÜ. Buy directly at https://simfuse.app, agent documentation at https://simfuse.app/agent/.
Peppol e-invoicing API for developers. Without an account: plan your integration, search the docs, check a test invoice against the Peppol rules and look up a Peppol receiver. With a free account: send sandbox test invoices and follow their delivery. Sandbox only.
Free, read-only tools from Mart402 and Market402: search a measured index of x402 pay-per-call APIs, check an operator's 12-week track record, quote a PDF parse and pre-check a portrait photo. Nothing here charges or asks for payment.
Find and live-check the paid x402 API for an agent task, ranked by real 30-day payers and price.
Supplier, company, sanctions, PEP, VAT and IBAN checks for agents. 5 checks a day free, no key.
The agentic layer of letters. Agents send real printed mail worldwide, German compliance built in.
UK 3D printing quotes for your files or Printables models, mail-in repair prices and order status.
Receipts-verified reviews of x402 services and paid APIs, before your agent pays.
Build custom POS apps with your AI agent. Final's MCP server gives developers what they need to ship a custom point of sale: scaffold a checkout flow, adapt vetted screen blueprints for counter POS, self-checkout kiosks, restaurant ordering and payment terminals, ground every call in Final's version-locked POS APIs, validate, boot a live preview and deploy to real hardware with integrated card payments. The same server also manages the store behind it: products, stock, orders, customers and sales reports. Remote Streamable HTTP with OAuth 2.1.
DePIN network telemetry with the source, as_of time and an upstream verify URL on every value.
Verify manufacturing lot provenance and chain of custody. Pay per call with x402 (USDC on Base).
Multi-carrier shipping for AI agents: compare rates, buy labels, track packages, validate addresses
Agents pay one real human for typed answers. First question free, then $2 each, or subscribe.
Receipts-verified reviews of x402 services and paid APIs, before your agent pays.
