Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/cloudflare/skills/workersgit clone --depth 1 https://github.com/cloudflare/skillsWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.00459 |
| Opus 5 | $0.00000 | $0.00230 |
| Sonnet 5 | $0.00000 | $0.00092 |
| Haiku 4.5 | $0.00000 | $0.00046 |
Grade A, and why
workers scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Cloudflare Workers
STOP. Your knowledge of Cloudflare Workers APIs and limits may be outdated. Always retrieve current documentation before any Workers, KV, R2, D1, Durable Objects, Queues, Vectorize, AI, or Agents SDK task.
Docs
- https://developers.cloudflare.com/workers/
- MCP:
https://docs.mcp.cloudflare.com/mcp
For all limits and quotas, retrieve from the product's /platform/limits/ page.
Commands
| Command | Purpose |
|---|---|
npx wrangler dev |
Local development |
npx wrangler deploy |
Deploy to Cloudflare |
npx wrangler types |
Generate TypeScript types |
Run wrangler types after changing bindings in wrangler.jsonc.
Node.js Compatibility
If you encounter Dynamic require of "X" is not supported or missing Node.js APIs:
{
"compatibility_flags": ["nodejs_compat"],
"compatibility_date": "YYYY-MM-DD" // Use today's date
}
Docs: https://developers.cloudflare.com/workers/runtime-apis/nodejs/
Errors
- Error 1102 (CPU/Memory exceeded): Retrieve limits from
/workers/platform/limits/ - All errors: https://developers.cloudflare.com/workers/observability/errors/
Product Docs
Retrieve API references and limits from:
/kv/ · /r2/ · /d1/ · /durable-objects/ · /queues/ · /vectorize/ · /workers-ai/ · /agents/
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 61 lines · 0 tokens per session scan A b5443d6c57c0
workers is a cursor rule published in the GitHub repository cloudflare/skills (2,744 stars, last pushed 25d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 459 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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