Find a service for your task.
Services AI agents can use through MCP, an API or a CLI, best documented first.
Lemon Squeezy
Merchant of Record platform for software and digital products, with a REST API for stores, products, orders, subscriptions and checkouts.
API
Documentation checked 7 Oct 2026
Plaid
Financial data network and API for connecting bank accounts to apps, with an API, a CLI and a remote MCP server.
MCPAPICLI
Documentation checked 7 Oct 2026
SendX
Email marketing software for campaigns, list building, and marketing automation.
API
Documentation checked 11 Oct 2026
Twilio
Communications platform with APIs for SMS, voice, WhatsApp, email and verification, plus a command-line interface.
APICLI
Documentation checked 7 Oct 2026
Vonage
Communications APIs for messaging, voice, video, verification and identity.
API
Documentation checked 7 Oct 2026
OpenRouter
Unified API and MCP server for accessing many AI models from different providers.
MCPAPI
Documentation checked 7 Oct 2026
Financial Datasets
Financial Datasets provides financial and market data through an API. Its income-statements operation retrieves financial statements for a stock ticker.
API
Mail.tm
Mail.tm provides a temporary email REST API for creating mailbox accounts and receiving messages.
API
PDFTables
PDF table extraction and conversion service with an API for processing PDFs into spreadsheet formats.
API
Sender
Sender provides email marketing and subscriber management with a REST API for reading subscriber records from an account.
API
Dog API
An open-source collection of dog pictures with a public JSON API for retrieving images and breed information.
APINo account needed
vatcheckapi.com
vatcheckapi.com provides a JSON REST API for validating VAT numbers and retrieving company registration details from official registries. This operation checks a VAT number.
API
SpherePay
SpherePay is an API-first platform for on-ramp and off-ramp transfers between fiat currencies and stablecoins, with built-in customer compliance flows.
API
WhatsOnChain
WhatsOnChain is a Bitcoin SV blockchain explorer with a REST API for BSV chain data. This interface retrieves mainnet chain information.
APINo account needed
ReplyLayer
ReplyLayer provides scoped email infrastructure for AI agents through REST, CLI, SDK, and MCP interfaces, with security scanning on messages.
MCP
Autron
Autron is an AI agent for Amazon advertising with an MCP interface for reading seller metrics and managing approved ads actions.
MCP
eSignatures.com
eSignatures.com provides electronic signature workflows and a REST API for querying contract content.
API
LinkPreview
LinkPreview returns a webpage's title, description and preview image as JSON through a GET or POST API, authenticated with a free API key.
API
Deepgram
Voice AI platform with speech-to-text, text-to-speech and voice agent APIs, plus a CLI with a built-in MCP server.
MCPAPICLI
Cloudflare
Global network and developer platform for CDN, security, DNS and serverless Workers, with a REST API and the Wrangler CLI.
APICLI
Redpanda
Redpanda Cloud provides a Control Plane API that lists clusters belonging to a Redpanda Cloud organization.
API
Open Library
Open book catalog with JSON APIs for searching books, authors, covers and editions.
API
Gigasheet
Gigasheet provides a data analysis application and API. Its User info API endpoint returns the username associated with the request authorization and whether the request is authenticated.
API
data.gov.sg
Singapore government open-data portal with APIs for public datasets and real-time environmental readings.
API
Documentation checked 13 Oct 2026