Developer Tools for the AI Era

Prompt Token Counter

Count tokens in your prompts for GPT-4, Claude, Llama, and other AI models.

Prompt Cost Calculator

Estimate API costs for your prompts across major AI providers and models.

Context Window Calculator

Check if your content fits within the context window of different AI models.

AI Prompt Generator

Generate structured prompts for text tasks, coding, system instructions, agents, structured outputs, and quick image prompts.

Image Prompt Generator

Create detailed prompts for AI image generation with subject, style, lighting, camera angle, composition, aspect ratio, and negative prompt controls.

OpenAPI to MCP Generator

Convert OpenAPI JSON or YAML specs into MCP tool definitions, input schemas, and TypeScript skeletons.

MCP Tool Schema Validator

Validate MCP tool definitions — names, descriptions, inputSchema, required fields, and common mistakes.

MCP Tool Definition Generator

Generate MCP tool definitions from a form — name, description, typed input fields, and required arrays.

MCP Server Config Generator

Generate MCP server configuration snippets for Claude Desktop, Cursor, and other clients.

MCP Client Config Validator

Validate MCP client configuration JSON — mcpServers, commands, args, env, and common mistakes.

MCP Input Schema Builder

Build MCP inputSchema JSON using a form — typed fields, required arrays, enums, and TypeScript types.

MCP Server README Generator

Generate a README.md template for MCP servers with installation, config, tools, and env sections.

MCP Tool Name Generator

Generate clean, machine-friendly MCP tool names from descriptions, API paths, and action phrases.

MCP Tool Description Checker

Check MCP tool descriptions for clarity, specificity, and agent usability. Scores and suggests improvements.

Agent Tools

Agent System Prompt Auditor

Audit AI agent system prompts for role clarity, safety guardrails, output format, fallback behavior, and conflicting instructions.

MCP Tool Response Schema Builder

Build JSON Schema definitions for MCP tool response shapes — success, error, and TypeScript types.

Agent Tools

Agent Context Planner

Plan your AI agent context window — add system prompt, tool schemas, retrieved docs, and see how many conversation turns fit.

Agent Tools

Agent Safety Checklist

Generate a safety checklist for AI agents based on goal, tools, and deployment environment — access control, data handling, human oversight, and more.

Claude Skill Generator

Generate starter Claude Skill files — SKILL.md, README.md, folder structure, and files checklist — from a form.

Coding Agent Generator

Generate starter instruction files for coding agents — AGENTS.md, CLAUDE.md, GEMINI.md, Cursor Rules, Windsurf Rules, and generic instructions.

Custom GPT Instructions Generator

Generate structured instructions, behavior rules, and conversation starters for Custom GPTs and AI assistants.

Agent Tool Spec Generator

Generate human-readable and machine-friendly specifications for tools an AI agent can use — Markdown spec, JSON spec, input schema, and usage examples.

Agent Task Prompt Generator

Generate clear, structured task prompts for coding agents — Claude Code, Cursor, Codex, Windsurf, Gemini CLI, and more.