Quickstart
Get started with 50c in 5 minutes. Start here →
Welcome
Build faster with AI-powered developer tools. Math, code review, scraping, UX analysis, security audits, and more.
REST API
Call tools via HTTP endpoints. API Reference →
MCP Server
Use with Cursor, Claude Desktop, or Windsurf. Setup →
CLI
Run tools from the command line. npx 50c call genius
Why 50c?
- 141 tools — Invention, math, proof tooling, Cloudflare automation, scraping, security, UX, agent engineering, and more
- Pay per call — Credits consumed only when you call. Free tier to start.
- Suite-based access — Each plan unlocks suites of related tools, not random features
- Production-ready — REST API, MCP, CLI, OpenAI-compatible
Plans
Each plan unlocks tool suites matched to how you work.
| Plan | Price | Tools | Credits/mo | API Keys |
|---|---|---|---|---|
| Free | $0 | 27 | 200 | 1 |
| Starter | $29/mo | 58 | 3,000 | 1 |
| Pro | 122 | 15,000 | 1 | |
| Enterprise | From $199/mo | 122 | 100k–750k | 10–100 |
| Foundation | Contact us | 141 | Custom | Custom |
What each plan unlocks
- Free — Utilities
- Starter — + Content & Copy, Prompt Engineering, UX & Design, Context & Memory
- Pro — + Scraping & Intelligence, Security & Compliance, Agent Engineering, Adoption & Business, Cloudflare, Factory & Build
- Enterprise — Same Pro tools at scale. Shared API keys for your team.
Tier Price Shared Keys Credits/mo Team $199/mo 10 100,000 Business $399/mo 25 250,000 Scale $699/mo 50 500,000 Org $999/mo 100 750,000 - Foundation — All 141 catalog tools including Invention & Discovery + Math & Proof (e.g. Titan, Magnum, skeptic_pov, magnum_dependency_dag), plus Pro/Starter/Free suites. Research-grade AI for breakthroughs.