anthropic-os

anthropic-os is a skill for Claude Code, Codex from Mark393295827/third-brain-v7-skills. It costs 42 tokens per session (1,313 once invoked), scanned A, original, MIT.

A framework for redesigning one work system as a supervised learning loop. It defines the workflow, people, evidence, permissions, measures, limits, and review process.

In plain words
What is it for?
Use it to diagnose a work bottleneck, design an experiment, track results, and update practices from evidence.
Why use it?
It helps replace vague productivity changes with one bounded experiment that has a baseline, owner, success measure, safety limit, budget, and rollback rule.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to diagnose a work bottleneck, design an experiment, track results, and update practices from evidence.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mark393295827/third-brain-v7-skills/anthropic-os
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 Mark393295827/third-brain-v7-skills --skill anthropic-os
Clone the repo
git clone --depth 1 https://github.com/Mark393295827/third-brain-v7-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 anthropic-os

README.md
[![agentmods](https://agentmods.dev/badge/skills/mark393295827/third-brain-v7-skills/anthropic-os/github.svg)](https://agentmods.dev/skills/mark393295827/third-brain-v7-skills/anthropic-os)
Your own site
<a href="https://agentmods.dev/skills/mark393295827/third-brain-v7-skills/anthropic-os"><img src="https://agentmods.dev/badge/skills/mark393295827/third-brain-v7-skills/anthropic-os/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 anthropic-os

Your own site · 80×15
<a href="https://agentmods.dev/skills/mark393295827/third-brain-v7-skills/anthropic-os"><img src="https://agentmods.dev/badge/skills/mark393295827/third-brain-v7-skills/anthropic-os.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,313 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
SkillSpector: 1 finding, up to low

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • low Privilege Escalation · line 48
    Skill requests more permissions than appear necessary for its stated functionality. Review if elevated access is justified.
    Fix: Request only the minimum permissions required. Document why each permission is needed. Remove broad permissions like '*' or 'all'.
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 $0.00042 $0.01313
Opus 5 $0.00021 $0.00656
Sonnet 5 $0.00008 $0.00263
Haiku 4.5 $0.00004 $0.00131

Measured 11d ago against content hash 4e8f6da86a18, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

anthropic-os 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 11d 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.

skills/anthropic-os/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Anthropic OS

<skill_contract> One owned work system with its workflow, users, traces, permissions, metrics, constraints, and review horizon. A supervised operating-system redesign with one bounded experiment, control gates, cadence, and rollback. The selected practice has a baseline, hypothesis, owner, metric, guardrail, budget, stop rule, and review receipt. <non_goals>Extreme productivity claims, surveillance, automatic policy evolution, or cadence without supporting context and capability.</non_goals>

Redesign one work system as a supervised learning loop. Plasticity means practices may change from evidence; competition means alternatives contend; constraint means attention, time, permissions, and review bandwidth shape the design. Load references/operating-system-playbook.md for diagnostics and artifacts.

Usage Template

Provide: system boundary, owner, desired outcome, users, current workflow, local metrics, traces/data, permissions, failure history, review capacity, and horizon.

Workflow

Define one operating bottleneck and baseline. Run Four-C in order: Context (truth/history), Connections (systems/accounts), Capabilities (skills/SOPs/evals), Cadence (triggers/reviews). Do not add automation cadence until the first three can support and verify it.

<unknowns_gate>

Treat productivity multipliers, culture narratives, maturity scores, and vendor case claims as hypotheses until local evidence exists. If outcome owner, trace consent, or approval authority is absent, return NEEDS_INPUT. Do not infer the expansion of local labels such as CASH when the system has not defined them.

</unknowns_gate>

  1. Audit the closed loop: trace substrate, DRI, custom taste/eval, review bandwidth, prediction, feedback latency, and quiet-success stop.
  2. Choose one flywheel and its bottleneck; allocate roughly 70% to a validated big bet and 30% to business-as-usual/option preservation only when local constraints justify it.
  3. Apply 3B: Bending adapts a practice to context, Breaking removes a limiting rule or metric through an approved experiment, Blending combines mechanisms across domains.
  4. Generate alternatives, then select one two-week-or-shorter experiment with hypothesis, owner, cohort, metric, guardrail, budget, stop, and rollback.
  5. Run dual prediction when useful: human and agent predict outcome independently; compare actual result, record prediction error, and update decision weights only after repeated calibrated evidence.
  6. Add a success-disaster pre-mortem: what breaks if adoption or throughput exceeds expectations; define load, quality, permission, support, and rollback controls.
  7. Escalate permission through observe -> co-drive -> scoped reversible action -> monitored routine -> audited autonomy. Keys and environment enforce boundaries.
  8. Review evidence; keep, adapt, retire, or combine the practice. No automatic archival or policy installation: human approval and the promotion gate govern system changes.

Read the full file on GitHub · 106 lines

Files

What ships with it

1 file 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. 11d ago First seen · 106 lines · 42 tokens per session scan A 4e8f6da86a18

Subscribe to this mod's changes

anthropic-os is a skill published in the GitHub repository Mark393295827/third-brain-v7-skills (138 stars, last pushed 20d ago), licensed MIT. It adds 42 tokens to every session and 1,313 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 2026-08-30.

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