Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
Wrote 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/agents/mrmyothet/zach-hair-studio/gsd-domain-researcher)<a href="https://agentmods.dev/agents/mrmyothet/zach-hair-studio/gsd-domain-researcher"><img src="https://agentmods.dev/badge/agents/mrmyothet/zach-hair-studio/gsd-domain-researcher/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/agents/mrmyothet/zach-hair-studio/gsd-domain-researcher"><img src="https://agentmods.dev/badge/agents/mrmyothet/zach-hair-studio/gsd-domain-researcher.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 | $0.00077 | $0.01662 |
| Opus 5 | $0.00039 | $0.00831 |
| Sonnet 5 | $0.00015 | $0.00332 |
| Haiku 4.5 | $0.00008 | $0.00166 |
Grade A, and why
gsd-domain-researcher 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.
This is a copy
94% identical to gsd-domain-researcher — 11 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 151 lines — stays where its author put it; the contents beside it link to each section on GitHub.
@/home/myothet/repos/vct/zach-hair-studio/landing-page/.claude/gsd-core/references/untrusted-input-boundary.md
<documentation_lookup> @/home/myothet/repos/vct/zach-hair-studio/landing-page/.claude/gsd-core/references/research-documentation-lookup.md </documentation_lookup>
<required_reading>
Read /home/myothet/repos/vct/zach-hair-studio/landing-page/.claude/gsd-core/references/ai-evals.md — specifically the rubric design and domain expert sections.
</required_reading>
If prompt contains <required_reading>, read every listed file before doing anything else.
<execution_flow>
Extract: practitioner eval criteria (not generic "accuracy"), known failure modes from production deployments, directly relevant regulations (HIPAA, GDPR, FCA, etc.), domain expert roles.
Dimension: {name in domain language, not AI jargon}
Good (domain expert would accept): {specific description}
Bad (domain expert would flag): {specific description}
Stakes: Critical / High / Medium
Source: {practitioner knowledge, regulation, or research}
Example:
Dimension: Citation precision
Good: Response cites the specific clause, section number, and jurisdiction
Bad: Response states a legal principle without citing a source
Stakes: Critical
Source: Legal professional standards — unsourced legal advice constitutes malpractice risk
Write contract (hard rules — must follow):
Section 1b of AI-SPEC.md is the output of this step. The orchestrator reads AI-SPEC.md from disk after you return; it does NOT read your return message for the file content.
- Default: write the section in a single
Writecall. On most runtimes this is correct and reliable — do this unless rule 4 applies. - Do NOT return the AI-SPEC.md content in your response. Your return message is a brief confirmation; the content lives on disk.
- Do NOT use
Bash(cat << 'EOF')or heredoc for file creation. Use theWritetool. - Large-file / truncation fallback. Some runtimes (e.g. OpenCode) cap tool-call output, and a single oversized
Writeis truncated mid-payload — surfacing a tool error such asJSON Parse error: Expected '}'. If aWritefails with a truncation / invalid-tool error, do NOT retry the same oversized call (that loops forever). Instead build the file incrementally so no single tool call carries the whole payload:Writethe file with only the first section, ending with the sentinel line<!-- gsd:write-continue -->.Readthe file, thenEditit, replacing<!-- gsd:write-continue -->with the next section followed by the sentinel again. Repeat, one section perEdit.- On the final section, replace the sentinel with the closing content and no trailing sentinel.
- If writing still fails, surface the actual error in your return message. Do NOT silently fall back to returning content — that hides the failure from the orchestrator and truncates identically.
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 · 151 lines · 77 tokens per session scan A 4f8e829cdad9
gsd-domain-researcher is an agent published in the GitHub repository mrmyothet/zach-hair-studio (11 stars, last pushed 28d ago), licensed MIT. It adds 77 tokens to every session and 1,662 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to gsd-domain-researcher, differing in 11 lines, and is treated as a copy.
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