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 skills/monkilabs/opencastle/documentation-standardsnpx skills add monkilabs/opencastle --skill documentation-standardsgit clone --depth 1 https://github.com/monkilabs/opencastleWrote 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/monkilabs/opencastle/documentation-standards)<a href="https://agentmods.dev/skills/monkilabs/opencastle/documentation-standards"><img src="https://agentmods.dev/badge/skills/monkilabs/opencastle/documentation-standards.svg" alt="Measured on agentmods" 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 | $0.00061 | $0.00436 |
| Opus 5 | $0.00030 | $0.00218 |
| Sonnet 5 | $0.00012 | $0.00087 |
| Haiku 4.5 | $0.00006 | $0.00044 |
Grade A, and why
documentation-standards 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 4d 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
Documentation Standards
Project directory structure and practices: .opencastle/project/docs-structure.md. Writing guidelines, formatting rules, anti-patterns: WRITING-GUIDE.md, beside this file.
Templates
Issue doc — ### ISSUE-ID: Brief Description, then: Issue ID, Status (Known Limitation | Fixed | Workaround Available), Severity (Critical | High | Medium | Low), Impact, Problem, Root Cause, Solution Options (numbered, each with Pros/Cons), Related Files (path — what it does).
ADR — ## ADR-NNN: Decision Title, then: Date, Status (Accepted | Superseded | Deprecated), Context, Decision, Consequences, Alternatives Considered.
Roadmap completion — add a COMPLETE row: feature, Completed: YYYY-MM-DD | Owner: @handle, files changed with rationale, validation command plus exit status. Then move it to the Completed section with a one-line release note.
Changelog — under a ## [1.2.0] — YYYY-MM-DD heading, group by Conventional Commits type (Added / Fixed / Changed), one imperative line per change with its PR or issue number, most recent version first.
Mermaid Diagrams
One concern per diagram, max 10–12 nodes. flowchart TD for pipelines, LR for request flows, sequenceDiagram for API flows, erDiagram for data models. Verb labels on arrows; %% Title: ... on complex diagrams.
Validate
Check links and formatting before committing docs. Resolve the formatter command via the codebase-tool slot; the link checker is standalone:
npx markdown-link-check docs/**/*.md
What ships with it
1 file 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.
- 4d ago First seen · 32 lines · 61 tokens per session scan A e90886829e4e
documentation-standards is a skill published in the GitHub repository monkilabs/opencastle (61 stars, last pushed 6d ago), licensed MIT. It adds 61 tokens to every session and 436 once invoked, about $0.0003 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 2026-08-30.
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