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 alessiomarcone/agent-fieldbook --skill navigategit clone --depth 1 https://github.com/alessiomarcone/agent-fieldbookWrote 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/alessiomarcone/agent-fieldbook/navigate)<a href="https://agentmods.dev/skills/alessiomarcone/agent-fieldbook/navigate"><img src="https://agentmods.dev/badge/skills/alessiomarcone/agent-fieldbook/navigate/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/alessiomarcone/agent-fieldbook/navigate"><img src="https://agentmods.dev/badge/skills/alessiomarcone/agent-fieldbook/navigate.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 | $0.00062 | $0.00534 |
| Opus 5 | $0.00031 | $0.00267 |
| Sonnet 5 | $0.00012 | $0.00107 |
| Haiku 4.5 | $0.00006 | $0.00053 |
Grade A, and why
navigate 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 11d 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
Navigate
Route the request. Do not absorb specialist work that belongs to a narrower skill.
Reference
Read references/knowledge-base.md when the mechanism boundary or product branch is not obvious.
Routing table
| Intent | Route |
|---|---|
| Improve or design a request | prompt |
| Fact-check or stress-test an output | verify |
| Decide, design, or configure delegated agents | subagent |
| Create or refine an agent skill | skill |
| Package or distribute reusable capabilities | plugin |
| Design a Cowork workflow | cowork |
| Operate a Codex-specific surface | codex |
| Build an official learning path | learn |
| Distill source material | knowledge-card |
| Run work on a clock or recurring schedule | cowork for Claude/Cowork, codex for Codex, or the host scheduler/API |
If no specialist matches, select the smallest supported mechanism: normal chat/task, project knowledge, CLAUDE.md or AGENTS.md, skill, subagent, hook, scheduler/automation, MCP/connector, plugin, or API/SDK. Hooks are event-driven; they are not a substitute for clock-driven scheduling.
Output contract
Return three fields, plus an optional fourth:
- Route — one skill or mechanism.
- Why — one short paragraph.
- Invoke — the exact next invocation and minimum input.
- Freshness check — only when a product capability may have changed.
Use /knowledge-pack:<skill> for the Claude Code plugin and /<skill> for a
standalone Claude skill. Use $knowledge-pack:<skill> for the Codex plugin and
$<skill> for a standalone Codex skill.
Boundaries
- Choose one adequate route, not a menu of equivalent options.
- Own comparisons such as “custom agent or skill?”; once the user explicitly selects an artifact, its specialist skill wins.
- Do not execute the specialist workflow unless routing alone would block progress.
- Do not conflate a skill, subagent, hook, plugin, connector, or MCP server.
- Answer in the user's language.
What ships with it
2 files 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.
- 11d ago First seen · 51 lines · 62 tokens per session scan A 5fca095dda1b
navigate is a skill published in the GitHub repository alessiomarcone/agent-fieldbook (5 stars, last pushed 4d ago), licensed MIT. It adds 62 tokens to every session and 534 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 2026-08-31.
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