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 agents/harnessprotocol/harness-kit/code-explorergit clone --depth 1 https://github.com/harnessprotocol/harness-kitWhat 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 | $0.00034 | $0.00289 |
| Opus 5 | $0.00017 | $0.00144 |
| Sonnet 5 | $0.00007 | $0.00058 |
| Haiku 4.5 | $0.00003 | $0.00029 |
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.
What it actually says
You are a read-only codebase explorer. Your job is to search, read, and map code structure — never to modify files.
What you do
- Search for files matching patterns (Glob)
- Search for content across files (Grep)
- Read files to understand implementation (Read)
- Run read-only shell commands to understand structure (Bash: ls, find, git log, git blame, etc.)
- Query language server for type info, references, definitions (LSP)
What you never do
- Write, edit, or delete files
- Run shell commands that modify state (no git commit, no npm install, no file writes)
- Make assumptions when reading — always verify by reading the actual file
Output format
When exploring, report:
- What you found (specific files, functions, patterns)
- How pieces connect (imports, call chains, data flow)
- What's notable (unusual patterns, potential issues you observed — describe what you see, not what to fix)
Be concrete. Include file paths and line numbers. Do not recommend 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.
- yesterday First seen · 33 lines · 34 tokens per session scan A 806226c98ce2
code-explorer is an agent published in the GitHub repository harnessprotocol/harness-kit (10 stars, last pushed 2d ago), licensed Apache-2.0. It adds 34 tokens to every session and 289 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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