Borrowing it
Nothing to install: this file belongs to uchimata2/htmldeck. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/uchimata2/htmldeck/master/CLAUDE.mdgit clone --depth 1 https://github.com/uchimata2/htmldeckWrote 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/instructions/uchimata2/htmldeck/claude-md)<a href="https://agentmods.dev/instructions/uchimata2/htmldeck/claude-md"><img src="https://agentmods.dev/badge/instructions/uchimata2/htmldeck/claude-md/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/instructions/uchimata2/htmldeck/claude-md"><img src="https://agentmods.dev/badge/instructions/uchimata2/htmldeck/claude-md.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 | $0.03003 | $0.03003 |
| Opus 5.5 | $0.01201 | $0.01201 |
| Sonnet 5.5 | $0.00601 | $0.00601 |
| Haiku 4.5 | $0.00300 | $0.00300 |
Grade A, and why
htmldeck CLAUDE.md 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 1mo 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 — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.
htmldeck — working conventions
Read this before doing anything in this folder.
What loads every turn, and what bounds it
Tier 1 is what the harness loads without being asked — a property of the tree, not a list anyone maintains. Establish it by observation and never from a file's claim about itself: a document that asserts a load discipline the harness does not implement is worse than one over budget, because the claim cannot be falsified and content keeps being written on the strength of it. Tier 2 is what a skill or workflow document pulls in when work of a kind starts. Tier 3 is what tier 2 loads one at a time, for the branch actually taken.
Observed 2026-08-13: a session here receives three files unasked — the owner's global
preferences, this file, and the memory index. Method: read what the session was given before its
first tool call, then confirm the tree holds no second CLAUDE.md. This repository owns one of the
three; the other two are the owner's and outside this bound, and the memory index is CE-10's. The
plugin also writes into an adopter's tier 1, through skills/htmldeck/SKILL.md's description block
and nothing else.
.claude/rules/ is tier 2 by path, observed 2026-09-14 (T-295 §3): the
harness appends a rule file after a read of a file its paths: names. A rule file is content cut
from this one, so it is not a term of the bound below, for the reason a tier-3 document is not.
The bound: this file stays smaller than the smallest document it defers to that a session enters
at the start of work of a kind — today docs/BRIEF.md, docs/PUBLISHING.md,
tasks/TASK-WORKFLOW.md, tasks/README.md, .taskmd/config.md and docs/AUDIT-METHOD.md. That
test is the tier-2 set, ruled by the owner 2026-08-23
(T-236): the list is its enumeration,
a document that meets the test joins it, and it is still not every document this file links to. A
tier-3 document — one opened for a single question during work — is not a term:
docs/RELEASE-PHASES.md, docs/RELEASE-HISTORY.md, docs/REMEDIATION-ORDER.md. Otherwise
splitting content out could never satisfy the bound, since each split makes a new document smaller
than what it was cut from. Both terms are counted from the tree and no constant is written
anywhere, because a number and the arithmetic that justified it have to be edited together and the
number wins by staying put. The inequality says something: once the file you pay for on every turn
costs more than any single document you open on demand, the split has inverted. Measure both terms
with
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.
- 1mo ago Changed · -60 lines · -1,026 tokens per session 9870b515cd8e
- 1mo ago Changed · +4 lines · +106 tokens per session 93010bcd3e56
- 2mo ago First seen · 220 lines · 3,923 tokens per session scan A 3c9857a28cea
htmldeck CLAUDE.md is an instructions file published in the GitHub repository uchimata2/htmldeck (2 stars, last pushed 1mo ago), licensed MIT. It adds 3,003 tokens to every session, about $0.0120 per session on Opus 5.5. 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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