Stop your AI agents
from writing sloppy TypeScript.
A toolkit that teaches coding agents like Claude Code, Codex, Cursor, Amp, and more to ship production-ready code in half the time, at half the cost.
$ claude mcp add conventiondotsh --transport http https://mcp.convention.shFree tier · No credit card required
Benchmarks
Same task. Half the cost. Less than half the time.
Building the same TypeScript module with and without convention.sh, on the same agent and model. Conventions land in context just-in-time, so the agent doesn't thrash.
Measured on Claude Opus 4.7Turns
32
vs 52 baseline
38% fewer
Time
1m 56s
vs 4m 46s baseline
59% faster
Output tokens
12.6K
vs 22.1K baseline
43% fewer
Input tokens
382K
vs 2,399K baseline
84% fewer
Cost
$1.27
vs $2.26 baseline
44% cheaper
Relative cost vs baseline
Each metric, normalized so the baseline run is 100%. Shorter is better.
Pricing
Simple pricing. Built for developers.
Start free for personal projects. Upgrade when you ship commercial work.
Free
For personal, non-commercial projects. No credit card required.
- Hosted MCP endpoint
- All built-in conventions
- Personal, non-commercial use only
- Free tier rate limits apply
- Commercial use
Pro
Commercial use, billed annually. One developer.
- Commercial use, 1 developer
- No rate limits
- Custom convention packs
- Priority support
Team
Commercial use, billed annually. Unlimited developers at one organization.
- Commercial use, unlimited developers
- Single organization
- No rate limits
- Org-scoped tokens
- Priority support
Trusted by engineers from
How it works
A guide your agents will actually read.
convention.sh runs as a hosted MCP server. Your agent asks for the convention it needs, when it needs it.
27 conventions, on demand
Instead of stuffing a wall of rules into every prompt, agents pull one snippet from our library of 27 only when they need it — so you pay for the tokens you actually use, not the ones you might.
No more sloppy TypeScript
Strict typing, no any, validate untrusted input with Zod, prefer discriminated unions over optional fields. The rules that used to live in a wiki nobody reads.
Works with every agent
Standard Model Context Protocol — drop it into Claude Code, Codex, Cursor, Amp, or anything else that speaks MCP.
Always up to date
Conventions live on our hosted MCP server. We ship a new rule, your agents pick it up on the next request — no PRs, no redeploys, no stale copies across machines.