api Tools
446 best api tools and apps, curated and ranked by community upvotes on ProductCool. Updated daily as new api products launch.
You can now access local AI built into the browser to start creating your own browser capabilities instead of relying on others' extensions.
Security research often involves questions that general-purpose models refuse Meet Dolly 1 Security and Dolly 2 Security, uncensored variants of GLM-5.3 Flash and GLM-5.3 for defensive testing and red-team workflows. Run them through the Zro API or CLI with zero request retention. Since our July launch, we’ve also added new models, agent integrations, yearly plans, and referrals.
Run the Jev model in your browser: one live run without signup, then 5 free runs a day. Get Choice, Score and Noul answers, build decision flows, run batches and call the Jev API.
FastAPI is a modern, fast (high-performance) web framework for building APIs with Python 3.8+ based on standard Python type hints. It solves the problem of slow development and complex API documentation by automatically generating interactive OpenAPI docs and providing intuitive editor support. It's designed for developers who need to create production-ready APIs quickly, from solo developers to large teams.
Specialized AI model hosting for open, proprietary, and custom stacks. Hosted open models, optimized proprietary endpoints, and turnkey deployment to real users.
Speech-to-text for voice agents that only asks about the word it's unsure of. Your bot gets that word flagged, with the other spellings it heard, and asks once, like a person would, instead of making callers spell everything. €0.48 per hour.
Mercury 3 is the most capable diffusion LLM released to date. It outperforms GPT-6 Luna and Claude Haiku 5.5 while running 4–8x faster at 1,000+ tokens per second.
An agent makes hundreds of small decisions during a task. We built Mouse-1 to handle these decisions, saving you time and money. Its 163x cheaper, and 65x faster than GPT-6 Sol. It works by adding the model directly into your agent harness alongside your current stack. Mouse-1 takes the agent's state and options and returns a probability. This lets the harness handle all the small decisions while the main frontier model takes care of the reasoning or code.
Exa 3.0 is the biggest search quality update to Exa’s search API for AI agents. It adds a larger embedding model, billions of new documents including 1.27B ecommerce listings and 211M+ local businesses, and Dynamic Highlights, which use 95% fewer tokens than full page text. A new Exa Lite tier costs $4 per 1,000 requests, and Exa Auto costs $7. Available now through the API.
Rusteerio is a Rust-powered, Cheerio-compatible HTML/XML library for Node.js. Keep the API you already know, swap one import, and process pages faster. Includes parallel batch extraction, prebuilt native binaries, and zero npm runtime dependencies.
Put a QR code on your site, receipt or status page. People scan it with the free Nudgebox iPhone app and choose what to hear about. No account, email or phone number. Your backend reaches them with one HTTPS call. No SDK, no device tokens.
Pomerado turns any website into a MCP / API in minutes. Automate everything by turning previously inaccessible websites (like Google Flights, Zillow, Instacart, legacy portals) into native tools for your agents. Our open-source tool builds, hosts, authenticates, and maintains your integrations, so you can focus on building.
Dreamscale Labs (YC F26) is building the real-time cloud inference platform for robotics. We serve frontier physical AI models (e.g. VLAs, WAMs) over the cloud with ultra-low latency. Instead of purchasing expensive GPUs, you can run large SOTA models using on-demand cloud inference!
A live webhook inbox for developers. Inspect HTTP requests, explore JSON payloads, and turn real events into TypeScript interfaces or Zod schemas. All in your browser, with no setup or account required.
Kugel 3.5 beats four leading TTS models on 8 of 9 tests. It gets short words wrong at half the rate of the next-best model, reads long numbers exactly right 97.1% of the time and supports IPA. 5.25 cents a minute. Not on Kugel? Three lines to production.
Scrape Anything by Context lets you pull clean, usable data from the web without building or maintaining scraping infrastructure. Give Context a URL and it handles rendering, blocks, proxies, retries, and extraction—returning Markdown, HTML, screenshots, or structured data through one API.
API Claws is Buda's developer-facing Agent API. Create hosted AI agents with Drive memory, model routing, managed runtime, observability, sessions, and embeddable product experiences, without building the full agent infrastructure yourself.
Introducing Trophy's MCP servers. Use your favourite AI tools to configure gamified features and control your Trophy account without touching the dashboard.
Request Eagle is an open-source API client written in Rust and drawn on the GPU, with no web view. It answers your first keystroke 0.36 s after launch, keeps requests as TOML files you can commit, runs Postman-style pm.* scripts and has a CLI for AI agents.
Pine Computer is a cloud computer built for AI to use. Your product hands it a job: research, forms, spreadsheets, portals with no API. The finished work comes back. AI reads each app's structure instead of pixels, is told when something changes, and gets as many virtual screens as it needs. Spin up a computer per customer through one SDK, bring your own model or use ours, and let a person take over for sign-ins or approvals. Invite-only beta.
Zernio is the marketing infrastructure 200,000 developers build products on. We absorb the integrations, platform approvals and maintenance behind every channel, all on official APIs, so you can start building today. One API covers 16 social platforms, ads on 7 networks, WhatsApp, iMessage, and phone numbers with calls and SMS that you buy inside Zernio. Use the REST API in your code, or let your coding agent do the same through our MCP server and CLI.