Developer Tools

Choose based on what you're shipping. OpenAPI to MCP generates a complete, downloadable Model Context Protocol server project (TypeScript or Python) with Cursor and Claude Desktop config snippets, so you get a running MCP process that exposes your API's operations as agent tools out of the box. OpenAPI to Tool Schemas skips the server entirely and outputs just the schema definitions themselves, Zod validators, JSON Schema, OpenAI function-calling tools, or Anthropic input_schema tools, for when you already have your own agent runtime or tool-calling loop and only need correctly typed tool definitions to drop in. If you're prototyping an MCP server from scratch, start with OpenAPI to MCP; if you're wiring an existing agent framework, OpenAPI to Tool Schemas is the faster, lighter path.

robots.txt sets Allow and Disallow rules for crawlers, including GPTBot, ClaudeBot, and PerplexityBot. llms.txt is a curated Markdown map of your most useful pages so AI agents can find context quickly, closer to a sitemap written for language models. Most sites need both: robots.txt for crawl policy, and llms.txt as a shortcut past the full site tree. Use robots.txt Generator for the first and llms.txt Generator for the second.

No. Every tool in this hub runs as JavaScript in your browser: OpenAPI parsing and MCP codegen, JSON-to-schema inference, hash, UUID, Base64, and URL encoding, prompt and rules linting, Cursor rules generation, and robots.txt generation. Specs, prompts, and pasted text stay local. Nothing is sent to Instant Tools servers or a third-party API. Once the page has loaded, the tools keep working offline, and there is no server-side file-size or rate limit.

For integrity checks today, that is, verifying a downloaded file matches what the publisher intended, use SHA-256 or SHA-512; both are collision-resistant with current computing power and are the default choice in most modern toolchains, package managers, and checksums you'll see published alongside releases. MD5 and SHA-1 are still fine for low-stakes, non-security uses like deduplicating files, generating a quick cache key, or spotting accidental corruption, since they're fast and short, but both have known collision attacks and should never be used for passwords, digital signatures, or anything where an adversary might deliberately try to produce a matching hash. Hash Generator computes all five (MD5, SHA-1, SHA-256, SHA-384, SHA-512) at once from text or a file, so you can compare and pick per situation.