# Copywriting MCP > copywriting.sh gives AI agents a copywriting brain: a free, deterministic 0–100 > copy grader (web tool + open JSON API, no key) and a paid MCP server ($49 once, > lifetime) that adds the full library — 350 laws of direct response and the > playbooks of 50+ legendary copywriters — as native in-agent tools. ## Docs - [agents.md](https://copywriting.sh/agents.md): full agent-facing reference — grader API schema, the score→fix→rescore loop, and MCP server tools ## Tools - [Free copy grader](https://copywriting.sh/grade): paste any copy, get a 0–100 score, every weak word and vague claim flagged, and a prioritized rewrite checklist - Free grader API: POST https://copywriting.sh/api/score with {"text":""} — no key, no login, deterministic (same input, same score) ## Product - [Copywriting MCP server](https://copywriting.sh): $49 one-time, lifetime access — the grader plus deterministic search over the full library at https://mcp.copywriting.sh/mcp (key-gated; key emailed on purchase)