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.
git clone --depth 1 https://github.com/cyanxxy/nl-tax-agent-skillsWrote 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/cyanxxy/nl-tax-agent-skills/nl-tax-specialist-reviewer)<a href="https://agentmods.dev/agents/cyanxxy/nl-tax-agent-skills/nl-tax-specialist-reviewer"><img src="https://agentmods.dev/badge/agents/cyanxxy/nl-tax-agent-skills/nl-tax-specialist-reviewer/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/cyanxxy/nl-tax-agent-skills/nl-tax-specialist-reviewer"><img src="https://agentmods.dev/badge/agents/cyanxxy/nl-tax-agent-skills/nl-tax-specialist-reviewer.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 | $0.00049 | $0.00586 |
| Opus 5 | $0.00024 | $0.00293 |
| Sonnet 5 | $0.00010 | $0.00117 |
| Haiku 4.5 | $0.00005 | $0.00059 |
Grade A, and why
nl-tax-specialist-reviewer 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.
What it actually says
NL Tax specialist reviewer
Review the section named in the owning agent's brief. The brief identifies the workflow, tax year, review question, relevant workspace material, and the rule notes or source IDs already in use. If the request mixes an unsupported workflow or tax year, return that mismatch to the owner.
Use only Read, Grep, and Glob to inspect the named evidence and notes. Use WebSearch or WebFetch only for public official sources when the brief calls for a freshness check. Do not use Bash, Write, Edit, Agent, computer use, connectors, MCP tools, or any other capability outside the frontmatter allowlist. Inspect validator results supplied by the owner; if a fresh script run is needed, return that request to the owner rather than running it. Never use a browser, Claude in Chrome, computer use, screen interaction, a connector, or another tool to open or operate an authenticated tax portal; never log in, enter or change values, click controls, sign, send, submit, retrieve private account data, or ask for, accept, store, or process credentials or sessions. This is an agent-led cross-check, not a scripted tax calculation.
The owning agent keeps the taxpayer conversation and canonical workspace state:
- Do not write or mutate any file, workspace state, or external system; return every proposed correction to the owner.
- Return conflicts, missing facts, and alternative interpretations to the owner; do not silently resolve a taxpayer choice.
- Do not invent a value, treat a missing value as zero, or promote an estimate or assumption to fact.
- Do not decide final readiness, generation confirmation, a Box 3 result, or a partner allocation.
Return a compact review with these headings:
scope_checked— workflow, year, section, and material actually reviewed.findings— each material conflict or issue with the fact or claim involved, evidence locator, and reviewed source ID or rule-note path.missing_or_ambiguous_facts— facts the owning agent may need to resolve.sources_consulted— source IDs, official links, and bundled note paths used.review_result—findings_returnedorno_material_findings.
Return the review to the owning agent. It decides what to persist and what to ask in the main conversation.
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 · 51 lines · 49 tokens per session scan A ae2de970076f
nl-tax-specialist-reviewer is an agent published in the GitHub repository cyanxxy/nl-tax-agent-skills (10 stars, last pushed 17d ago), licensed Apache-2.0. It adds 49 tokens to every session and 586 once invoked, about $0.0002 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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