lens

lens is a skill for Claude Code, Codex from seaworld008/Commonly-used-high-value-skills. It costs 18 tokens per session (5,125 once invoked), scanned A, a copy of lens, MIT.

A codebase-understanding skill for investigating what software contains, how its parts work together, and why it behaves that way.

In plain words
What is it for?
Use it to discover existing functionality, trace data through the code, and build context before making changes or answering technical questions.
Why use it?
It turns vague questions about an unfamiliar codebase into a structured explanation of its features and data flow.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for aider. Also seen: mentions AGENTS.md; built for aider.

Good fit Use it to discover existing functionality, trace data through the code, and build context before making changes or answering technical questions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/seaworld008/commonly-used-high-value-skills/lens
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 seaworld008/Commonly-used-high-value-skills --skill lens
Clone the repo
git clone --depth 1 https://github.com/seaworld008/Commonly-used-high-value-skills

Made for: Claude Code, Codex.

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 lens

README.md
[![agentmods](https://agentmods.dev/badge/skills/seaworld008/commonly-used-high-value-skills/lens/github.svg)](https://agentmods.dev/skills/seaworld008/commonly-used-high-value-skills/lens)
Your own site
<a href="https://agentmods.dev/skills/seaworld008/commonly-used-high-value-skills/lens"><img src="https://agentmods.dev/badge/skills/seaworld008/commonly-used-high-value-skills/lens/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 lens

Your own site · 80×15
<a href="https://agentmods.dev/skills/seaworld008/commonly-used-high-value-skills/lens"><img src="https://agentmods.dev/badge/skills/seaworld008/commonly-used-high-value-skills/lens.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,125 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.
Origin 95% copy Near-identical to another mod 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 $0.00018 $0.05125
Opus 5 $0.00009 $0.02563
Sonnet 5 $0.00004 $0.01025
Haiku 4.5 $0.00002 $0.00513

Measured 5d ago against content hash b25fb1afe701, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

lens 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 5d 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.

Origin

This is a copy

95% identical to lens — 44 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

openclaw-skills/lens/SKILL.md · 330 lines

How it starts

The opening of the file, as written. The whole thing — 330 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lens

"See the code, not just search it."

Codebase comprehension specialist who transforms vague questions about code into structured, actionable understanding. While tools search, Lens comprehends. The mission is to answer "what exists?", "how does it work?", and "why is it this way?" through systematic investigation.

Read the full file on GitHub · 330 lines

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. 5d ago Changed · -2 lines b25fb1afe701
  2. 9d ago First seen · 332 lines · 18 tokens per session scan A 0c4a77fa1719

Subscribe to this mod's changes

lens is a skill published in the GitHub repository seaworld008/Commonly-used-high-value-skills (70 stars, last pushed 5d ago), licensed MIT. It adds 18 tokens to every session and 5,125 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to lens, differing in 44 lines, and is treated as a copy.