context-os: Skill for Claude Code

.claude/skills/bottleneck-attack/SKILL.md

bottleneck-attack is a skill for Claude Code from jacob-dietle/context-os. It costs 66 tokens per session (1,980 once invoked), scanned A, original, MIT.

A decision-making method for finding the single constraint that limits progress most. It traces broad symptoms such as slow delivery or poor results to a specific problem that can be attacked.

In plain words
What is it for?
Use it when choosing the next initiative, investigating underperforming results, breaking through stalled progress, or evaluating a proposal to build new infrastructure.
Why use it?
It prevents teams from optimizing minor issues or automating work before proving which obstacle actually matters.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is jacob-dietle/context-os's own configuration. It tells Claude Code how to work on context-os itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything context-os configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jacob-dietle/context-os. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jacob-dietle/context-os/main/.claude/skills/bottleneck-attack/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/jacob-dietle/context-os

Made for: Claude Code.

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 bottleneck-attack

README.md
[![agentmods](https://agentmods.dev/badge/skills/jacob-dietle/context-os/bottleneck-attack/github.svg)](https://agentmods.dev/skills/jacob-dietle/context-os/bottleneck-attack)
Your own site
<a href="https://agentmods.dev/skills/jacob-dietle/context-os/bottleneck-attack"><img src="https://agentmods.dev/badge/skills/jacob-dietle/context-os/bottleneck-attack/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 bottleneck-attack

Your own site · 80×15
<a href="https://agentmods.dev/skills/jacob-dietle/context-os/bottleneck-attack"><img src="https://agentmods.dev/badge/skills/jacob-dietle/context-os/bottleneck-attack.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,980 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 pass 7 Sept 2026
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 $0.00066 $0.01980
Opus 5.5 $0.00026 $0.00792
Sonnet 5.5 $0.00013 $0.00396
Haiku 4.5 $0.00007 $0.00198

Measured 2mo ago against content hash 6f79bbcd1c8b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

bottleneck-attack 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 2mo 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.

.claude/skills/bottleneck-attack/SKILL.md · 245 lines

How it starts

The opening of the file, as written. The whole thing — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Bottleneck Attack

Identify the one constraint whose removal unlocks the most downstream progress, then attack it in the right order.

Speeding up something that should not exist is not progress.

When to use

Use this skill when:

  • deciding among several plausible initiatives;
  • a metric is underperforming and the cause is unclear;
  • progress feels diffused or stuck;
  • someone proposes new infrastructure before proving what it unlocks;
  • several teams are optimizing different symptoms of the same problem.

Do not use it when:

  • the root cause is already verified and the fix is obvious;
  • the work is pure exploration with no decision to make;
  • the constraint is taste or creative judgment rather than throughput;
  • a simple, bounded bug should just be fixed.

The tell: if the proposed action begins with “build,” “add,” or “automate” and nobody can name the exact constraint it removes, run this skill.

Core beliefs

  1. Attack the tip of the spear. Concentrate effort on the dominant limiter instead of improving several secondary problems.
  2. Find the bottleneck of the bottleneck. Abstract labels such as “retention,” “complexity,” or “alignment” are symptoms. Drill until the constraint is a specific mechanism, step, object, or requirement.
  3. Use the algorithm in order. Question → Delete → Simplify → Accelerate → Automate. Starting at automation compounds the wrong decision.
  4. Instrument disagreements. When two explanations compete, run the smallest test that allows reality to decide.
  5. Engineer cheap failures. Reversible failures are information. Irreversible, compounding, or reputational failures require assertion gates.
  6. Count externalities. A local improvement that transfers cost to people who cannot consent is debt, not optimization.

Find the real bottleneck

Choose the direction that matches the evidence you have.

Top-down: drill from a broken metric

L1 — Surface symptom
  “Activation is low.”
        ↓ What is limiting L1?
L2 — First-order constraint
  “Most approved users never complete setup.”
        ↓ What is limiting L2?
L3 — Attackable mechanism
  “The approval message has no setup path or observable completion event.”

Read the full file on GitHub · 245 lines

Files

What ships with it

2 files 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. 2mo ago First seen · 245 lines · 66 tokens per session scan A 6f79bbcd1c8b

Subscribe to this mod's changes

bottleneck-attack is a skill published in the GitHub repository jacob-dietle/context-os (115 stars, last pushed 2mo ago), licensed MIT. It adds 66 tokens to every session and 1,980 once invoked, about $0.0003 per session on Opus 5.5. 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.

Related

bottleneck-attack compared with skills from other repositories

bottleneck-attack next to 6 skills from other repositories
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