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 skills add d-padmanabhan/agent-engineering-handbook --skill cloudflare-waf-authorgit clone --depth 1 https://github.com/d-padmanabhan/agent-engineering-handbookWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/d-padmanabhan/agent-engineering-handbook/cloudflare-waf-author)<a href="https://agentmods.dev/skills/d-padmanabhan/agent-engineering-handbook/cloudflare-waf-author"><img src="https://agentmods.dev/badge/skills/d-padmanabhan/agent-engineering-handbook/cloudflare-waf-author/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/d-padmanabhan/agent-engineering-handbook/cloudflare-waf-author"><img src="https://agentmods.dev/badge/skills/d-padmanabhan/agent-engineering-handbook/cloudflare-waf-author.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00135 | $0.03805 |
| Opus 5 | $0.00068 | $0.01903 |
| Sonnet 5 | $0.00027 | $0.00761 |
| Haiku 4.5 | $0.00014 | $0.00380 |
Grade A, and why
cloudflare-waf-author scanned grade A with 1 finding 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 7d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
| The user mentioned `curl`, `client/v4/zones/<id>/rulesets`, a JSON payload, or a script | **API** | How it starts
The opening of the file, as written. The whole thing — 241 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cloudflare WAF Author
Companion rule: 405-cloudflare-waf-rules.mdc (file-scoped to Cloudflare ruleset Terraform / JSON; topic-discoverable for Dashboard authoring). The rule is the gate; this skill is the workflow through the gate.
Voice: opinionated. Every WAF rule is a policy commitment that ships to production at the edge. Custom rules can DoS your own users; managed-rule skips can silently bypass OWASP signatures. The job is to make the predicate exactly the right shape and exactly traceable to a request.
When to invoke this skill
Invoke when:
- The user asks to add or edit a Cloudflare WAF rule of any kind - custom block, allow, challenge, log, or a managed-rule skip / exception / OWASP child-rule bypass.
- A diff touches a Cloudflare ruleset Terraform file (matches the file globs in
405-cloudflare-waf-rules.mdc) or a JSON payload destined for the Rulesets API. - The user is authoring a rule via the Cloudflare Dashboard (UI clicks under Security → WAF) and mentions it in the conversation.
- A user mentions a change ticket asking to "block country X", "allow IP range Y", "stop the WAF from blocking endpoint Z", or any equivalent.
- A code or change review finds a candidate rule that violates
405-cloudflare-waf-rules.mdc.
Do NOT invoke for:
- Cloudflare Single Redirect / Origin Rule / Transform Rule edits - different ruleset phases.
- Account-level WAF policy or Bulk Redirects - this skill is zone-level WAF only.
- Bot Management or DDoS configuration - separate Cloudflare products.
Pre-step: confirm the authoring interface
Before Step 0, confirm which of the three interfaces the user is authoring through. This determines provenance carriers, position semantics, and the templates you'll use in Step 4.
| Signal | Interface |
|---|---|
The user opened a .tf file, mentioned terraform apply, or pushed a branch to an IaC repo |
Terraform |
| The user said "I'm in the Cloudflare dashboard", "WAF section", "Security → WAF" | Dashboard |
The user mentioned curl, client/v4/zones/<id>/rulesets, a JSON payload, or a script |
API |
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 7d ago First seen · 241 lines · 135 tokens per session scan A 919982ab69a2
cloudflare-waf-author is a skill published in the GitHub repository d-padmanabhan/agent-engineering-handbook (17 stars, last pushed 4d ago), licensed MIT. It adds 135 tokens to every session and 3,805 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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