What is Utilix used for?

Utilix is a platform offering 294+ developer utilities as free browser tools, a REST API, Node and Python SDKs and an MCP server so AI agents can call them. It is a good fit for giving an AI agent reliable utility functions and using small dev tools without installing anything.

Yes. Utilix has a free plan, and paid plans start at $9 per month.

Is Utilix open source?

No. Utilix is proprietary (closed-source) software and can't be self-hosted. In the Developer Tools category, open-source options include Agentation, IT Tools and Mission Control.

What are some alternatives to Utilix?

Utilix competes with RapidAPI and Stainless.

Utilix: features, pricing and alternatives

About Utilix

Utilix packages a large set of small developer tools so humans and AI agents can both use them. More than 294 tools are free in the browser with no login and run client-side, covering areas such as code (HTML formatter, .env parser, semver calculator), network (UUID and ULID generators, cURL builder), JSON, math and finance calculators, and a group of AI tools such as an nginx config explainer, regex generator, CLI builder, CSS explainer and JSON Schema generator that run on GPT-4o mini.

The same tools are exposed through a REST API at one base URL with JSON in and out, a Node SDK with 712 functions and a Python SDK with 564 functions that work offline without an API key, and an MCP server with 255 tools for Claude Desktop, Cursor, VS Code, Windsurf and Claude Code via an npx command and an API key.

The Pro plan lists 10,000 API requests per day, and getting started is free. The site has an API playground, documentation and a list of recently added tools, with a pricing page for plans. Recently added tools include a database connection string parser and a JSON Patch differ.

Key features

294+ tools free in the browser
REST API for every tool
Node and Python SDKs that work offline
MCP server for Claude, Cursor and VS Code
AI-powered explainers and generators
API playground and documentation

Good fit for

Giving an AI agent reliable utility functions
Using small dev tools without installing anything

Tags: developer-tools; api; mcp; sdk; utilities; ai-agents; json; regex

Utilix: questions and answers

What is Utilix used for?: Utilix is a platform offering 294+ developer utilities as free browser tools, a REST API, Node and Python SDKs and an MCP server so AI agents can call them. It is a good fit for giving an AI agent reliable utility functions and using small dev tools without installing anything.
Is Utilix free?: Yes. Utilix has a free plan, and paid plans start at $9 per month.
Is Utilix open source?: No. Utilix is proprietary (closed-source) software and can't be self-hosted. In the Developer Tools category, open-source options include Agentation, IT Tools and Mission Control.
What are some alternatives to Utilix?: Utilix competes with RapidAPI and Stainless.