shipfree / rules
Cursor rule0 starsChanged 11 days agoMITView on GitHub
Deploy AI services on free tiers without hitting a limit. Use when shipping, hosting or deploying an AI API, agent, chatbot, RAG endpoint or webhook under a zero-cost budget.
We split this shipfree.mdc into the rules it gives an agent
2 rules. About 0 are common, 0 are distinctive, and 2 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈0
Distinctive · estimate
This author's own choices. Worth a look.
2
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Very specific: line 8
When the goal is to deploy an AI service for free, load the shipfree skill from .agents/skills/shipfree/SKILL.md and follow it.
- Very specific: line 27
Never put a provider API key in the frontend.
≈ “Common” is an estimate: at least 1 in 5 of the 6,350 Cursor rule files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
--- description: Deploy AI services on free tiers without hitting a limit. Use when shipping, hosting or deploying an AI API, agent, chatbot, RAG endpoint or webhook under a zero-cost budget. alwaysApply: true --- # Shipfree When the goal is to deploy an AI service for free, load the `shipfree` skill from `.agents/skills/shipfree/SKILL.md` and follow it. It carries the machine-verified free-tier limits and the architecture that fits inside them. The four rules that cause most free-tier failures: 1. **Cloudflare Workers Free gets 10 ms of CPU per invocation.** Time waiting on a socket is not CPU time, so streaming a model response is cheap. Buffering and parsing a large JSON body is not. Pipe response bodies; do not buffer them. 2. **Durable Objects get 30 seconds of CPU per request.** Anything needing real CPU, per-user state, or WebSockets belongs in a Durable Object, not a Worker. Use the WebSocket Hibernation API so idle sessions are not billed. 3. **D1 allows 50 queries per Worker invocation.** Batch reads into one statement instead of looping. KV allows only 1,000 writes per day and one write per second per key, so KV is a cache, never a database. 4. **Queue consumers get 5 minutes of CPU.** Move embedding, summarising, scraping and transcoding off the request path into a queue consumer. Never put a provider API key in the frontend. Proxy through a Worker and keep the key in `wrangler secret put`. Full limits, workflow and templates: `.agents/skills/shipfree/SKILL.md`.
Where files are headingNew Cursor rule files have more rules about planning and tracking tasks, and fewer about code style.
Of the Cursor rule files we read, the 3,978 first seen in the last six months, against the older ones: the kind of rule that gained most share, and the kind that lost most. About files like this in general, not this one, and an estimate, since a kind is a pattern in the words.
In this repository3 other files it gives its agents.
- AGENTS.mdAGENTS.md
- .github/copilot-instructions.mdCopilot instructions
- shipfreeSkill
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Your trail
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