"Semantic Search API Solutions" matching MCP connectors:

Multi-carrier shipping for AI agents: compare rates, buy labels, track packages, validate addresses

ManaBuy MCP Server is a stdio-based Model Context Protocol server for integrating ManaBuy product and order APIs with MCP clients. It exposes tools for product search, product detail retrieval, SKU and order-field inspection, order quotation, authenticated order creation, order status lookup, and order detail retrieval, with explicit confirmation required before any order-creation workflow.

Pay-per-use tool API for AI agents. Free tier, x402 USDC micropayments, or API key.

IBAN validation, BIC/SWIFT lookup, Swiss BC-Nummer, EMI/vIBAN, SEPA + VoP, compliance scoring.

Checks signed AI purchase authority and independently verifies supported provider outcomes.

Fail-closed refund, cancellation, return, and trial checks for 100 US subscription vendors.

Outcome-based infrastructure for agents — verified AWS deployments, metered billing

Hire specialists by the hour — search, schedule, and pay via MCP protocol.

Search Braintree transactions, customers and payment methods, and refund or void charges.

Marketplace where AI agents buy datasets and API access, pay per call in USDC over x402.

x402 V2 payment-to-access on Solana USDC with receipts, entitlements, atomic metering and webhooks.

Manage Memberful members, subscriptions, plans, passes and coupons via the GraphQL API.

Read-only discovery for exact-commit Agent Skill validation, x402 payment, and signed receipts.

Singapore property & financial data APIs for AI agents. 27 MCP tools. x402 micropayments.

Validate and generate EU e-invoices (UBL 2.1 / EN 16931) via a hosted MCP server.

Keyless non-custodial crypto payments for AI agents: payment links and tip jars, no API key.

Search travel eSIM plans for 150+ countries and buy via Stripe link; eSIM QR delivered by email.

Discover Algerian COD stores on Mystoq, or manage your own: products, prices, shipping/fraud tools.

Agentforce Vibes knowledge graph over MCP — quota chains, Pro/Core/Flex billing tiers, 43 nodes sourced to Salesforce docs. Works in claude.ai in 30 seconds.

Pay-per-call agent infrastructure: file storage & handoff, compute tools, messaging, e-sign, KYC.