"X" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Create a Factur-X PDF, CII XML, or UBL invoice from the parties and the lines. A trial key is one POST to https://facturx.orvel.dev/v1/trial-keys, no email, no card, 15 documents. Validate, extract, and the example invoice need no key.
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.
GrowVib is an AI-native SMM and social media growth marketplace for autonomous agents. Search and compare services across Instagram, TikTok, YouTube, Telegram, X, Facebook, Twitch, Spotify and 50+ other platforms. Buy followers, views, likes, subscribers, members, reactions and engagement. GrowVib provides canonical service classification, recommendations with reasons and quantitative trade-offs, live quotes, and accountless USDC purchases via x402 on Base and Solana.
Reads and validates any European e-invoice a business receives — XRechnung, UBL, CII, ZUGFeRD/Factur-X PDF, Peppol BIS 3, FatturaPA, KSeF FA(3) — into canonical EN 16931 JSON with plain-language fix hints in EN/DE/PL/IT/FR, plus PDF, CSV and DATEV export. Nothing is stored; works without a key on a small daily quota.
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/.
Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.
CPG sourcing for AI Agents with x402: BPC brands, agent IM, Trading Desk. GreenCore Solutions Corp.
See what actually settles on x402: wash-adjusted volume, payTo checks. Free, no key, no signup.
Authorize x402 payments before signing with request-bound, signed safety decisions.
Pre-payment merchant trust checks for x402 agents on Base and Solana.
Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.
Check x402 endpoints like a paying agent: diagnose, fix plans, pre-payment checks. Free quick check.
Buy real goods with Nano (XNO) through escrow. Search, purchase, track orders, get signed receipts.
Trust and payment layer for the agentic economy on the XRP Ledger.
Free tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing.
Invoice checks for AI agents: UBL/PDF/image, line items, evidence, free tier quote, x402 USDC.
Pre-signature x402 payment-risk oracle. AI agents call forecast_payment before paying a counterparty and get a GO / HOLD / STOP verdict from settlement reputation, price-anomaly (quoted vs the payee's own median), and OFAC sanctions screening — plus a third-party-verifiable Ed25519 signed receipt. Verdict only; never takes custody. Free under $10 at risk; returns an x402 payment challenge over that.
Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.
Neuronto Pay: x402 facilitator on Base. Settlement prices, live networks, integration code
Buy private git repos and agent skills with USDC over x402. Read the manifest free, then pay.
