"Servers that support Server-Sent Events (SSE)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
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.
Create beautiful forms that do more. Take payments, get documents signed, automate the rest.
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.
Skavio LLC provides 18 hosted MCP tools for native Circle USDC payments via x402 v2 on Base and Solana: transaction verification, recipient/amount matching, blockchain evidence PDFs, DNS/TLS audits and agent utilities. Discovery and status tools are free; paid MCP calls require explicit buyer wallet authorization. The separate standalone Base-only HTTP APIs include USDC Verify (0.02), Match (0.03), Evidence PDF (0.05), and four DeepSeek-only web operations: Fetch (0.01), Search (0.02), Extract (0.02), Extract + Analyze (0.03 USDC). Those HTTP routes are not additional MCP tools. Evidence PDFs are not tax invoices. Docs: https://getskavio.com/x402/docs/ ; seven-route discovery: https://getskavio.com/.well-known/x402 ; support: support@getskavio.com ; privacy: https://getskavio.com/privacy/ ; terms: https://getskavio.com/terms/
Objective Trust ranks MCP endpoints before the caller pays them. Tools: set_objective (free), rank_tools_for_task (API key or $0.005 x402), record_outcome (free). Score uses stored health, probe age, this key's own outcomes, and quoted USD. Sponsored, featured, and click_count are excluded from the score. The caller calls the chosen mcp_url and pays that server. Connect at https://agentshare.dev/mcp/objective-trust.
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/.
Quotes and invoices numbered without gaps, sent as PDFs, paid online. Pay per action.
Connect Claude, ChatGPT, Cursor or your own app to Workspace369: clients and pipeline, proposals, e-sign contracts, invoices and payments, projects, tasks, time tracking and calendar. Build a custom CRM on it with any AI coding agent. Anything sent to a client waits for your approval.
ClientFoyer is a client portal for freelancers and boutique studios (project updates, files, invoices, and Stripe payments behind one client link, no client login). Its built-in MCP server lets an AI agent do the portal busywork on the freelancer's behalf: list and create projects, post status updates, upload deliverables, read the client portal link and exactly what the client sees, list invoices, files, and testimonials, and manage Agent Push webhook subscriptions for project events.
Agent-native helpdesk. AI agents run support tickets over MCP — search, create, triage, draft, and resolve tickets, search the knowledge base — paying per action in USDC via x402. Read tools are free; priced tools return HTTP 402 with payment terms.
Connect AI assistants to Paxaver, the School Community Operating System, for authorized access to school lunch menus, student lunch orders, wallet balances, school events, restaurants, and school-community operations.
Optional creator-support terms and private contribution receipt tools for Gateway.
Start here: a free key in one call, then a demand in words that is hired, graded and settled
An accounting engine your AI connects to over MCP. Hand it bank and card statements, invoices, bills and receipts; get reconciled double-entry books with every number traceable to the page it came from. Requires a host that can reach files on your machine — Claude Code, Codex, Cursor, Grok Build, or Claude Desktop + Cowork. Browser chat can install it but cannot send files. Open beta; first 1,000,000 tokens free.
For businesses that pay affiliates: set up and run your affiliate program from your AI assistant.
Spend policy for AI agents that pay (x402, MPP). Login-free sandbox, real sidecar, no real funds.
Give AI agents a Bitcoin wallet with Lightning Network payments and L402 support.
Account, billing, team, API key and model discovery tools for agents that use ModelsLab.
An invoice generator for freelancers, contractors, and small businesses that works inside the chat.
Explains each card chargeback reason code and the proof that wins it, and prices custom responses.
Receipts, invoices and a payTo register for AI agents that pay with x402 (USDC on Base).
AI sales team that works the phone: gets a real person on the line. Agents sign up by paying (MPP).
Task envelope, budget ledger, kill switch and signed receipts for agents that pay.
Wallets and rails that let AI agents spend money safely.
SEC company fundamentals and filing events, each with its source filing. Pay per call with x402.
Run a UPI creator support page from chat: supporters, goals, page, share assets. No money moves.
Checks AI support agent refunds against Shopify and Stripe. Read-only pricing, fit and estimates.
Invoice keeps a freelancer’s approved invoice, line items, quantities, the rate already approved, the due date, and late terms, then lets an assistant read that record before it answers. A 14-day trial, then Pro. The price is only at checkout.
Deposit keeps a freelancer’s approved deposit and later payment dates, and what an assistant may tell the client, then lets an assistant read that record before it answers. A 14-day trial, then Pro. The price is only at checkout.
Korean company due diligence, sanctions screening, Upbit/Bithumb events, HWP. Pay per call (x402).
