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/google-gemini/gemini-cli/code_explorernpx skills add google-gemini/gemini-cli --skill code_explorergit clone --depth 1 https://github.com/google-gemini/gemini-cliWhat 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 | $0.00028 | $0.00548 |
| Opus 5 | $0.00014 | $0.00274 |
| Sonnet 5 | $0.00006 | $0.00110 |
| Haiku 4.5 | $0.00003 | $0.00055 |
Grade A, and why
code_explorer 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 34 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Code Explorer Instructions
Explore the repository to find verified, existing file paths and technical context related to the reported issue.
Phase 1: Root Exploration & Related Area Discovery
- Understand Overall Codebase Structure: Before focusing on a single file, gain a high-level understanding of the repository structure (e.g.
packages/cli,packages/core). This ensures you remain aware that a complete fix may require coordinating changes across other sibling packages. Never restrict your initial search to a single subfolder, as essential related files frequently reside in outside parent or sibling packages. - Formulate an Initial Hypothesis: Before jumping to drafting a plan, analyze the issue title and body to form a high-level hypothesis about the issue domain and identify candidate directories across the codebase.
Phase 2: Directed Code Exploration & Traversal
- Error Tracing: If the issue body contains a stack trace, log, or file reference, start at that exact file. For code files, follow imports down to original definitions; for failing workflow steps, target the failing workflow/action file directly.
- Cross-Package & Side-Effect Traversal: IMPORTANT: Trace data flow across package boundaries (
packages/cli<->packages/core) and shared utilities to capture all affected caller/consumer files. - Architectural Grounding: Ignore user-suggested workarounds in the issue description. Always investigate the underlying source code to derive a clean fix.
Phase 3: Test Applicability & Pattern Check
- Search Existing Test Patterns: Use
find_fileorlist_directoryin the target directory to check if automated unit/integration test files (e.g.*.test.tsor*.test.tsx) exist in that module. - Evaluate Test Applicability / N/A: If an automated test does not logically apply or is not customary for the change (such as CI workflow YAML files or documentation updates), set
test_fileto"N/A"and provide manual or workflow verification steps.
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.
- yesterday First seen · 34 lines · 28 tokens per session scan A daf02cab765f
code_explorer is a skill published in the GitHub repository google-gemini/gemini-cli (106,749 stars, last pushed 2d ago), licensed Apache-2.0. It adds 28 tokens to every session and 548 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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