APIs for AI agents

Poof

A payments platform with a checkout-link API for creating hosted customer checkout sessions.

Commerce · checkout · api

Chutes

Hosted AI inference API with OpenAI-compatible chat completions across Chutes models.

artificial-intelligence · Developer tools · api

Atako

A team platform for autonomous AI agents, with public agent-facing access to Atako’s pricing and catalog information and private company-account management tools.

artificial-intelligence · Developer tools · Productivity and collaboration

GreyNoise

GreyNoise Community API provides limited lookups of an IP address in GreyNoise datasets, returning basic context such as whether it has been observed scanning the internet or appears in RIOT.

cybersecurity · Developer tools

Screenshotbase

A screenshot API that renders websites and returns image, PDF or Markdown output.

Developer tools · screenshots · api

Infobip

Infobip offers a messaging API for sending SMS messages and receiving delivery reports.

Communications · Communications · api

SuprSend

SuprSend provides an HTTP API for retrieving metadata about a subscriber list in a workspace.

notifications · Communications · API

Book'd Out

A REST API and outbound webhooks for connecting your own tools to your Book'd Out account.

booking · appointments · business

SignalWire

SignalWire provides communications APIs and a Datasphere document API for listing documents in a project’s knowledge workspace.

Communications · Developer tools · Public data

TopAlternativesTo

A software comparison directory with checked pricing, source dates, and independent software assessments.

Research and knowledge · software-directory · API

BrandScout

BrandScout provides a public REST API for checking domain and social username availability for a brand name.

Developer tools

RAG Repo

Curated directory of open datasets and knowledge bases for AI systems, with a free read-only JSON API for its catalogue and update feed.

dataset-catalogue · knowledge-bases · api · Research and knowledge

Vibeworker Upwork Job Search API

Vibeworker monitors Upwork job postings and assigns AI quality scores. Its API returns recent matching jobs with those scores and supports filters for keywords, job type, budget, experience, skill and score.

freelance jobs · job search · API

ClickSend

ClickSend offers a messaging API with REST endpoints for sending and managing communications.

communication · Communications

Zulip

Open-source group chat and team collaboration software with a documented REST API.

Communication · Developer tools

Hanko

Hanko provides hosted authentication and user-management services with a Cloud Admin API.

authentication · security · Developer tools

DataForSEO

DataForSEO Google Organic SERP Live API returns real-time search results for a keyword and location.

Search · Marketing · API

Open Waters

Open Waters publishes open marine software and data, including tide predictions from harmonic constituents for stations worldwide.

tides · marine-data · Weather and climate · api

IPLocation.net API

Developer tools

46elks

46elks provides an HTTP API for SMS, MMS, voice and virtual phone numbers.

Communications · telephony · api

Fullstory

A digital experience analytics platform with browser, mobile, and server APIs.

analytics · Developer tools · api

DocSpring

Generate PDFs from templates and automate document workflows through a documented API.

document-generation · pdf · Developer tools

Postcodes.io

Postcodes.io is a free, open-source postcode lookup API and geocoder for the United Kingdom maintained by Ideal Postcodes.

Maps and geospatial data · postcode data · open data · API

Hyperbrowser

Hyperbrowser provides managed cloud browsers and HyperAgent browser automation through its API.

browser automation · Developer tools · ai