bulk-reader

bulk-reader is a skill for Claude Code from VKirill/claude-lane-stack. It costs 48 tokens per session (229 once invoked), scanned A, original, MIT.

A file-reading helper that asks a separate worker to summarize large files when direct reading is blocked or would load too much text.

In plain words
What is it for?
Use it to map a large file, ask focused questions about its contents, and then read only selected sections.
Why use it?
It lets the agent understand the structure and relevant parts of a large file without copying the whole file into the conversation.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Part of the lane-stack plugin — 54 skills, 4 commands, 17 agents, 1 hook shipped together

Good fit Use it to map a large file, ask focused questions about its contents, and then read only selected sections.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/vkirill/claude-lane-stack/bulk-reader
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 VKirill/claude-lane-stack --skill bulk-reader
Clone the repo
git clone --depth 1 https://github.com/VKirill/claude-lane-stack

Made for: Claude Code.

Or install lane-stack, the plugin that ships this one along with the rest of its 54 skills, 4 commands, 17 agents, 1 hook.

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 bulk-reader

README.md
[![agentmods](https://agentmods.dev/badge/skills/vkirill/claude-lane-stack/bulk-reader/github.svg)](https://agentmods.dev/skills/vkirill/claude-lane-stack/bulk-reader)
Your own site
<a href="https://agentmods.dev/skills/vkirill/claude-lane-stack/bulk-reader"><img src="https://agentmods.dev/badge/skills/vkirill/claude-lane-stack/bulk-reader/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 bulk-reader

Your own site · 80×15
<a href="https://agentmods.dev/skills/vkirill/claude-lane-stack/bulk-reader"><img src="https://agentmods.dev/badge/skills/vkirill/claude-lane-stack/bulk-reader.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 229 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 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 $0.00048 $0.00229
Opus 5 $0.00024 $0.00114
Sonnet 5 $0.00010 $0.00046
Haiku 4.5 $0.00005 $0.00023

Measured today against content hash 37cad29f7d3e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

bulk-reader 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 today.

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/lane-stack/skills/bulk-reader/SKILL.md · 24 lines

What it actually says

bulk-reader

Do not Read, cat, head, tail, or sed the file. The hook only redirects — you run the worker:

export PATH="$HOME/.agents/bin:$PATH"
pm_read --path FILE --question "<what you need from this file>"

Stdout is PM_READ_BRIEF. Keep that map. Ask again with a new --question if needed — the worker reads the file, you do not.

Edit: Read with offset+limit on a hotspot from the brief. Never paste the file body into chat.

NEVER

  • Retry the blocked Read with cat / sed -n / head / python -c open(...).
  • Dump the source into the user chat because they said "read the whole file".
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. today First seen · 24 lines · 48 tokens per session scan A 37cad29f7d3e

Subscribe to this mod's changes

bulk-reader is a skill published in the GitHub repository VKirill/claude-lane-stack (115 stars, last pushed yesterday), licensed MIT. It adds 48 tokens to every session and 229 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 2026-09-10.

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