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30 results (showing the top 30) · filtered in 230ms

The 24 Pull Requests API provides read‑only JSON endpoints that expose the initiative’s project listings, pull‑request contributions, and participant (user and organisation) data for the December open‑source campaign, with pagination and optional JSON‑P support.

No auth
HTTPS
CORS
Playground
Operational

The Anchore Engine API Server provides a comprehensive REST API for managing accounts and users, submitting container images for analysis, and retrieving detailed analysis results such as vulnerability reports, content listings, SBOMs, and policy evaluation, while also exposing endpoints for events, archives, imports, and health checks.

No auth
HTTPS
Playground
Operational

Multiples services and public APIs

No auth
HTTPS
Open
ApicAgent
Development
(visit)

The ApicAgent API analyzes a provided user‑agent string and returns the identified browser, operating system, and device type, supporting both GET requests (typically via query parameters) and POST requests with a JSON payload.

No auth
HTTPS
CORS
Playground
Degraded

The Apicurio Registry v2 API is a REST interface for storing, versioning, retrieving, and managing a wide range of schema and API design artifacts (including Avro, OpenAPI, AsyncAPI, GraphQL, protobuf, JSON Schema, and more) organized in logical groups. It also exposes endpoints for artifact metadata, versioning, custom rules, search, and administrative operations such as configuration management, logging control, and data import/export.

No auth
Playground
APIs.guru
Development
(visit)

A web portal that lets users browse a directory of public APIs and provides access to related OpenAPI and GraphQL tools.

No auth
HTTPS
Playground
Operational
APIzone
Development
(visit)

Independent uptime & status monitoring for 200+ popular APIs

No auth
HTTPS
CORS
Open
Aquanode
Development
(visit)

Live GPU rental prices and availability across nine cloud providers

No auth
HTTPS
Open
Beeceptor
Development
(visit)

Beeceptor lets you launch instant, no‑code mock API servers for REST, GraphQL, SOAP, and gRPC—by uploading an OpenAPI/Swagger spec or defining matching rules in a UI—to generate realistic, stateful responses, inspect requests in real time, simulate latency or errors, and proxy/record traffic for testing and demos.

No auth
HTTPS
CORS
Operational
Open
Bored
Development
(visit)

The Bored API offers a catalog of suggested activities and lets you retrieve a random activity, filter activities by type and/or number of participants, or fetch a specific activity using its unique key.

No auth
HTTPS
Operational
Open
BrewPage
Development
(visit)

BrewPage offers instant, no‑signup hosting for HTML pages, Markdown documents, arbitrary files, and simple key‑value/JSON storage, returning short URLs (with optional namespaces, TTL, and password protection) via a straightforward HTTP API.

No auth
HTTPS
Degraded
Open
CDNJS
Development
(visit)

The CDNJS API delivers detailed metadata for a hosted JavaScript library, including its latest CDN URL, description, keywords, license, homepage, repository, available versions, and a list of asset files with corresponding SRI hashes.

No auth
HTTPS
Playground
Operational

Structured changelog metadata from open source projects

No auth
HTTPS
Open
Ciprand
Development
(visit)

Secure random string generator

No auth
HTTPS
Open

climateKuul live

No auth
Playground

The Cloudflare Trace API offers a single GET endpoint (/cdn-cgi/trace) that returns the caller’s IP address along with request metadata such as timestamp, user‑agent, geographic location, TLS/SSL version and other connection details.

No auth
HTTPS
CORS
Playground
Operational
Codex
Development
(visit)

Online Compiler for Various Languages

No auth
HTTPS
Open

The Color Name API returns the full default list of named colors and their hex values, and can generate a visual swatch for any specified color by providing its hex code or name.

No auth
HTTPS
Playground
Operational

Get around the dreaded CORS error by using this proxy as a middle man

No auth
HTTPS
CORS
Open
CountAPI
Development
(visit)

Free and simple counting service. You can use it to track page hits and specific events

No auth
HTTPS
CORS
Open
crates.io
Development
(visit)

Rust crate versions, downloads and dependency metadata

No auth
HTTPS
CORS
Open
Crucible
Development
(visit)

Crucible

No auth
Playground

Execute SQL queries against a Datasette database and return the results as JSON

No auth
Playground

The Datto|Autotask PSA REST API provides programmatic CRUD and query access to many Autotask PSA entities—including action types, appointments, article content and attachments, additional invoice field values, and related configuration objects—via endpoints for creating, reading, updating, deleting, and searching these resources.

No auth
HTTPS
Playground
Operational
DigMyName
Development
(visit)

Domain availability and registrar pricing across 52 TLDs

No auth
HTTPS
CORS
Open

The DomainsDB API provides a health‑check endpoint that returns a JSON message confirming the service is running, with a status field set to "OK".

No auth
HTTPS
Degraded
Open
dotsweep
Development
(visit)

dotsweep offers a free, public API that checks the availability of domain names across more than 1,200 TLDs and returns registration and renewal pricing, WHOIS records, and TLD policy details in JSON responses, without requiring any API key or authentication.

No auth
HTTPS
CORS
Operational
Open

Real-time status for GitHub, AWS, Discord and 90+ services

No auth
HTTPS
CORS
Open

The Ecosystem API provides read‑only access to an ecosystem's hierarchical data—categories, collections, and products—and to the individual listings associated with each entity, with pagination support and basic filtering on listing external IDs.

No auth
HTTPS
Playground
Operational

A simple JSON store API

No auth
HTTPS
CORS
Playground