crucible-navigator

crucible-navigator is a skill for Claude Code from terrylica/cc-skills. It costs 29 tokens per session (1,160 once invoked), scanned A, original, MIT.

A research-orientation guide that directs an agent to the right method for a research task. It covers checking evidence, running investigations, making decisions, and revisiting archived ideas.

In plain words
What is it for?
Use it to choose a research method for questions about whether findings are real, how to test hypotheses, whether to change direction, or whether to revisit older ideas.
Why use it?
It removes the guesswork when starting a research project or entering an unfamiliar research code repository.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions CLAUDE.md; mentions Claude Code.

Part of the crucible plugin — 5 skills shipped together

Good fit Use it to choose a research method for questions about whether findings are real, how to test hypotheses, whether to change direction, or whether to revisit older ideas.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/terrylica/cc-skills/00-navigator
Install

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.

Any agent
npx skills add terrylica/cc-skills --skill 00-navigator
Clone the repo
git clone --depth 1 https://github.com/terrylica/cc-skills

Made for: Claude Code.

Or install crucible, the plugin that ships this one along with the rest of its 5 skills.

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.

agentmods badge for crucible-navigator

README.md
[![agentmods](https://agentmods.dev/badge/skills/terrylica/cc-skills/00-navigator/github.svg)](https://agentmods.dev/skills/terrylica/cc-skills/00-navigator)
Your own site
<a href="https://agentmods.dev/skills/terrylica/cc-skills/00-navigator"><img src="https://agentmods.dev/badge/skills/terrylica/cc-skills/00-navigator/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.

agentmods 80×15 button for crucible-navigator

Your own site · 80×15
<a href="https://agentmods.dev/skills/terrylica/cc-skills/00-navigator"><img src="https://agentmods.dev/badge/skills/terrylica/cc-skills/00-navigator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,160 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Prompt Injection · line 17
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Excessive Agency · line 67
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00029 $0.01160
Opus 5 $0.00015 $0.00580
Sonnet 5 $0.00006 $0.00232
Haiku 4.5 $0.00003 $0.00116

Measured 11d ago against content hash 01f1af7f2fbb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

crucible-navigator 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.

plugins/crucible/skills/00-navigator/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

crucible-navigator — Research campaign orientation

Self-Evolving Skill: This skill improves through use. If the routing guidance is wrong (wrong skill invoked for a user intent), fix the description's TRIGGERS list and the routing table below. Append reason to references/evolution-log.md. Don't defer.

What this skill does

You are orienting an agent to research methodology. Route the agent to the right sub-skill based on what kind of research task is at hand. The four sub-skills cover epistemics (A), execution (B), decisions (C), and archive (D).

Routing table — map user intent to skill

User intent signal Route to
"Is this finding real?", "check significance", "shuffled null", "causal feature", "label leakage" a-research-foundations
"Test a hypothesis", "sweep parameters", "multi-agent analysis", "gate validation", "per-trade analysis" b-investigation-methodology
"Should we pivot?", "ship this?", "kill or refine?", "too much context", "supersede a finding" c-meta-governance
"Check dormant ideas", "what's archived?", "resurrect this", "conditions have changed" d-emergent-resurrection

If unsure, start with A (foundations). Epistemic discipline is the hardest prerequisite.

The core genetic-evolutionary framing

Research in this plugin is treated as a population under selection:

Population ───────────> (multi-lens agents propose candidates)
    │
    ▼
Fitness ──────────────> (z-score vs shuffled null, OOS replication, kill-selectivity)
    │
    ▼
Selection ────────────> (serial adversarial gates A→B→C→D→E)
    │
    ▼
Surviving individuals ─> (champion stacked as supersedes chain in evolution.jsonl)
    │
    ▼
Mutation/Crossover ───> (agent proposes perturbations of winner; orthogonal components recombined)
    │
    ▼
Archive failures ─────> (d-emergent-resurrection preserves with resurrect_if conditions)
    │
    └──────── NEXT GENERATION ───────┐
                                     ▼
                                 (new audit folder)

Read the full file on GitHub · 97 lines

Files

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.

Changes

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.

  1. 11d ago First seen · 97 lines · 29 tokens per session scan A 01f1af7f2fbb

Subscribe to this mod's changes

crucible-navigator is a skill published in the GitHub repository terrylica/cc-skills (72 stars, last pushed yesterday), licensed MIT. It adds 29 tokens to every session and 1,160 once invoked, about $0.0001 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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