ToolsMonk for developers

255 free browser-based tools across 10 categories, described in formats a program can read. There is an MCP server for AI agents, a read-only catalog API, and a per-tool disclosure of where each tool does its work. Everything on this page is public and free to call; only running tools over MCP needs a free key from your account.

Tools: 255
Categories: 10
MCP tools: 7, no writes
Auth: Key to run tools

Connect an AI agent

The Model Context Protocol server lets an agent search the catalog, run calculators, health formulas, text and developer utilities directly, and hand the person it is helping a working link for the rest. It exposes 7 tools and 4 resources and is currently version 1.1.0. It processes no files, writes and stores nothing, and issues no session.

Read the MCP server documentation

Where processing happens

232 of the 255 tools finish their work inside the visitor's browser, so the file never leaves the device. The remaining 23 do send input somewhere, and each one is named along with the reason. Every record in the tool catalog carries a runsInBrowser flag derived from the same list, so an agent can warn someone before their data goes anywhere.

See which tools send your files anywhere

The whole machine surface

Every endpoint below is unauthenticated, CORS-enabled and safe to crawl. None of them reads a cookie or has a side effect.

Resource	What it is	Format
MCP endpoint/api/mcp	Streamable HTTP, stateless, JSON-RPC over POST. Read-only.	JSON-RPC
MCP server card/.well-known/mcp/server-card.json	Machine-readable description of the server, its tools and its rate limit.	JSON
Agent Skills index/.well-known/agent-skills/index.json	Task-shaped recipes for common jobs, each naming the tools it uses.	JSON
API catalog/.well-known/api-catalog	RFC 9727 linkset pointing at every public API on this list.	linkset+json
OpenAPI 3.1 description/api/public/openapi.json	Describes the read-only catalog API below, and nothing else.	JSON
Tool catalog/api/public/tools	Every tool with slug, category, URL and whether it runs in your browser.	JSON
Categories/api/public/categories	Category list with tool counts.	JSON
Ranked search/api/public/search	Query with ?q= to find a tool by the task you are trying to do.	JSON
Processing disclosure/api/public/processing	Which tools send input to a server, grouped by why, with the rest listed as browser-only.	JSON
llms.txt/llms.txt	Compact orientation document for language models.	text
llms-full.txt/llms-full.txt	The long form, with the full catalog inline.	text
Sitemap/sitemap.xml	Every indexable URL on the site.	XML

Terms that apply

Read-only. Nothing on this page creates, updates or deletes anything. Because these endpoints are unauthenticated, everything they expose has to be something anyone may request without limit, and the only safe answer to that is data already public on the site.
Rate limited, and it tells you. Every response carries rate limit headers so a client can pace itself rather than back off blindly. The MCP endpoint publishes its own limit in the server card.
Attribution, not permission. You are welcome to build on the catalog data. A link back to ToolsMonk where it makes sense for your users is appreciated and never required.

Something wrong, or missing?

If a link in one of these documents does not resolve, an endpoint returns something surprising, or you need something that is not here, write to support@toolsmonk.com. Breaking changes to the MCP tool names or their arguments are reflected in the server version.