LLM Tools Tools
Token counters, JSON extractors, and utilities for working with AI prompts and LLM outputs. Estimate token usage and parse responses.
LLM Tools tools help you work faster and more efficiently. All tools on this page run in your browser—no installation or account needed. Simply choose a tool below, paste or enter your input, and get instant results. You can copy output to clipboard or, when supported, download files directly.
These tools are commonly used by developers, content creators, and technical teams for everyday tasks. Each tool is free, privacy-friendly, and mobile-ready. New tools are added regularly, so bookmark this page to stay updated.
Popular LLM Tools Tools
- Prompt Token Counter – Count characters, words, and estimate tokens for LLM prompts. Useful for OpenAI, Claude, and other AI APIs.
- LLM JSON Extractor – Extract JSON from LLM responses. Parse code blocks and clean malformed JSON from AI output.
- MCP Tool Schema Generator – Generate Model Context Protocol (MCP) tool definitions. Create name, description, and inputSchema JSON for MCP servers.
- MCP Config Formatter – Format and validate MCP server configuration (mcp.json). Pretty-print and check structure for Cursor, Claude, and other MCP clients.
- llms.txt Generator – Generate llms.txt for your website. Creates AI-readable discovery file with name, summary, contact, and services. Spec 1.1.1 compatible.
- Prompt Template Builder – Build prompts with {{variable}} placeholders. Fill in values and preview. For reusable AI prompts.
- System Prompt Generator – Generate system prompts for LLMs. Role, task, constraints, output format. For ChatGPT, Claude, etc.
- Few-Shot Prompt Builder – Build few-shot prompts with input-output examples. Structure examples for in-context learning.
- Prompt Variable Extractor – Extract {{variables}} or {placeholders} from prompt templates. List placeholders for documentation.
- LLM Cost Calculator – Estimate token cost for OpenAI GPT-4, Claude, and other LLM APIs. Input vs output tokens, pricing per model.
- Text Chunk Splitter – Split text into chunks for RAG, embeddings, or context windows. By tokens, characters, or sentences. Overlap support.
- API Response Formatter – Format and beautify API responses. JSON, XML. Detect and fix common malformed output from APIs.
Prompt Token Counter
Count characters, words, and estimate tokens for LLM prompts. Useful for OpenAI, Claude, and other AI APIs.
LLM JSON Extractor
Extract JSON from LLM responses. Parse code blocks and clean malformed JSON from AI output.
MCP Tool Schema Generator
Generate Model Context Protocol (MCP) tool definitions. Create name, description, and inputSchema JSON for MCP servers.
MCP Config Formatter
Format and validate MCP server configuration (mcp.json). Pretty-print and check structure for Cursor, Claude, and other MCP clients.
llms.txt Generator
Generate llms.txt for your website. Creates AI-readable discovery file with name, summary, contact, and services. Spec 1.1.1 compatible.
Prompt Template Builder
Build prompts with {{variable}} placeholders. Fill in values and preview. For reusable AI prompts.
System Prompt Generator
Generate system prompts for LLMs. Role, task, constraints, output format. For ChatGPT, Claude, etc.
Few-Shot Prompt Builder
Build few-shot prompts with input-output examples. Structure examples for in-context learning.
Prompt Variable Extractor
Extract {{variables}} or {placeholders} from prompt templates. List placeholders for documentation.
LLM Cost Calculator
Estimate token cost for OpenAI GPT-4, Claude, and other LLM APIs. Input vs output tokens, pricing per model.
Text Chunk Splitter
Split text into chunks for RAG, embeddings, or context windows. By tokens, characters, or sentences. Overlap support.
API Response Formatter
Format and beautify API responses. JSON, XML. Detect and fix common malformed output from APIs.
Frequently Asked Questions
- What are LLM Tools tools?
- LLM Tools tools are free online utilities that run in your browser. They help developers and content creators work faster—no installation, no account, and your data stays on your device. Use any tool instantly from desktop or mobile.
- Are LLM Tools tools free?
- Yes. All LLM Tools tools on everytools are completely free. No signup, no subscription, no limits. Use them as often as you need.
- How do I use LLM Tools tools?
- Open any tool on this page, paste or enter your input in the field, and view the result. Most tools update in real time. Click Copy to copy output to your clipboard. All processing happens in your browser—your data never leaves your device.
- Do I need to install anything for LLM Tools tools?
- No. All LLM Tools tools run in your web browser. No downloads, no plugins, no installation. Works on desktop and mobile.