Web & software development

Search free MIT SVG icons and paste React, Vue, Svelte or SVG code. No auth.

Omio travel transport booking MCP server: search trips, find the cheapest day, start booking.

remote debug iOS/Android/Unity/Godot/Flutter/RN/Web on real-device.ui-tree/screenshots/taps,tests.

Local symbol ground truth MCP server for Unicode lookup and code-symbol linting.

Construction unit prices with source and date for Spain, the US and the EU. OAuth or API key.

Address geocoding and bike, scooter, motorcycle, wheelchair and walking routes across Europe.

MCP server that lets AI assistants use all OneSchema features exposed via the public API.

Blockchain data, Deepstate and Standard Reserve markets, live chain queries, and API docs

Run Python, Java, C, C++, C#, Go, Rust and 39 more languages, each run in a fresh, offline sandbox.

Read-only MCP server for the open-banking.io PSD2 bank API — accounts, balances, transactions.

Paid tools for AI agents via x402 (USDC on Base): text rewrite, writing grade, code lookups.

Open Location Code shape, value discarded

Open-weight and abliterated LLMs on one API: compare models and rankings, chat, check credits.

Code open-ended survey responses: AI code frame (L1-L3), categorization, results and exports.

AI-to-AI social network: read discussions, post, reply, react, follow, and search without login.

Global air quality measurements by location and country from OpenAQ. No API key. By UnClick.

Benchmark your own prompt on 100+ LLMs with real API calls; pick the cheapest model that passes.

Memory interface for coding agents — stable memory_* tools over Hindsight, mem0, or Cognee.

Debug microcontrollers via OpenOCD: flash, breakpoints, memory, registers and variables.

91 tools for the OpenProject API v3, with read-only, admin-gate, profile and per-group switches.

Generate, edit and track dynamic (editable) QR codes with scan analytics. Hosted MCP and REST API.

OpenRevenue analytics MCP: projects, stats, visitors, funnels, and goals via API key or OAuth.

Render STL and PNG from OpenSCAD code.

MCP server for Bentley STAAD.Pro via the OpenSTAAD API

Unofficial, self-hosted MCP server for the documented OpenSolar API.

Get any company's OpenStatus status page as clean JSON — monitors, components and live status.

SysML v2 and KerML for coding agents: workspace diagnostics and edits, execution, REPL sessions.

OpenTable restaurant reservation management MCP server: search restaurants with open tables.

Hire human data labelers, RLHF annotators, and evaluators from your coding agent.

Local stdio MCP for UI briefs to React + shadcn with review, proof, and ship.

The official OpenVidu documentation, per version, for coding agents.

OpenAlex MCP — wraps the OpenAlex API (scholarly works, free, no auth)

OpenAQ MCP — global air-quality measurements via the OpenAQ v3 API.

Open Beauty Facts MCP — Open Beauty Facts API (free, no auth, keyless).

OpenCitations MCP — citation index (COCI + general Index API).

OpenIBAN MCP — validate an IBAN's checksum + bank code and resolve the bank name / BIC / city.…

Inspect AI projects, traces, tests, and governance rules in Openlayer, and debug failing evals.

OpenReview MCP — ML conference submissions and reviews (API v2)

OpenSea MCP — NFT marketplace data (v2 API)

OpenTripMap MCP — wraps the OpenTripMap Places API (dev.opentripmap.org)

MCP server for Opentrons OT-2 and Flex liquid-handling robots (HTTP API).

OpenWeather MCP — wraps the OpenWeatherMap API (openweathermap.org)

Calculate API and subscription costs, meeting time zones, recurring schedules and cron matches.

AI code review for your AI assistant — review local changes, branch diffs, and patch files.

Drive Android, iOS, smart TV and web apps from an agent; save the steps as CSV/YAML test suites.

Find test gaps, generate grounded tests, and dynamically prove behavior with mutation testing.

Find test gaps, generate grounded tests, and dynamically prove behavior with mutation testing.

Browse, subscribe to, and call 3,000+ APIs autonomously. x402 USDC pay-per-call on Base.

8,000+ pay-per-call APIs via x402 USDC micropayments on Base. No API keys needed.

Turn any task into the right API calls: discover, evaluate, and integrate public APIs.