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 KayZhongyi/public-web-census --skill public-web-censusgit clone --depth 1 https://github.com/KayZhongyi/public-web-censusWrote 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/kayzhongyi/public-web-census/public-web-census)<a href="https://agentmods.dev/skills/kayzhongyi/public-web-census/public-web-census"><img src="https://agentmods.dev/badge/skills/kayzhongyi/public-web-census/public-web-census/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/kayzhongyi/public-web-census/public-web-census"><img src="https://agentmods.dev/badge/skills/kayzhongyi/public-web-census/public-web-census.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 | $0.00136 | $0.02112 |
| Opus 5 | $0.00068 | $0.01056 |
| Sonnet 5 | $0.00027 | $0.00422 |
| Haiku 4.5 | $0.00014 | $0.00211 |
Grade A, and why
public-web-census 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Public Web Census
Turn scattered public web signals into a refreshable evidence ledger and decision-ready outputs. Treat a census as a best-effort capture of all retrievable records inside a declared scope at a stated cutoff, never as a guarantee about hidden, deleted, personalized, or restricted content.
Keep the user-facing workflow simple
The user may be a non-technical market, presales, product, or management colleague. Accept a natural-language request and translate it into the commands below. Do not make the user choose scripts, schemas, or storage paths unless a choice materially changes the result.
On first use:
- Run
./public-web-census doctor. - If browser collection is not ready, run
./public-web-census setupand explain only the manual Chrome steps. - Never ask for a platform password. Pause while the user signs in or completes platform verification directly in Chrome.
- Create a versioned workspace by default when the user asks to update, monitor, compare over time, share with colleagues, or reuse the data later.
- Report what was collected, where the evidence lives, which scope was covered, and which fields or surfaces were unavailable.
Preserve these invariants
- Work only with information visible through authorized, ordinary access.
- Never bypass authentication, CAPTCHA, rate limits, robots controls, or platform safeguards.
- Pause for human verification; never automate a challenge.
- Keep raw observations immutable and separate from translation, classification, and conclusions.
- Record target, source population, scope, cutoff, failures, and coverage limitations.
- Retain stable IDs and source URLs. Never infer deletion from one missing observation.
- Remove credentials, private URLs, personal data, and unreviewed raw corpora from shared outputs.
Read references/collection-safety.md before live collection.
Choose the operating path
Use a standard CSV/JSON bundle for a one-off investigation. Use a versioned workspace whenever the evidence will be refreshed, compared, handed to another department, or reused by another Agent.
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.
- 12d ago First seen · 181 lines · 136 tokens per session scan A 1461a11ca5c6
public-web-census is a skill published in the GitHub repository KayZhongyi/public-web-census (2 stars, last pushed 15d ago), licensed MIT. It adds 136 tokens to every session and 2,112 once invoked, about $0.0007 per session on Opus 5. 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 2026-08-31.
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