autonomous

autonomous is a skill for Claude Code from SienkLogic/plan-build-run. It costs 20 tokens per session (8,046 once invoked), scanned A, original, MIT.

A hands-free workflow for running several project phases in sequence.

In plain words
What is it for?
It helps execute multiple phases automatically, with configurable starting and stopping points and optional forward planning.
Why use it?
It removes repeated manual handoffs between discussion, planning, implementation, and verification.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool; mentions Claude Code.

Part of the pbr plugin — 45 skills, 71 commands, 18 agents, 3 hooks shipped together

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.

agentmods
npx agentmods add skills/sienklogic/plan-build-run/autonomous
Any agent
npx skills add SienkLogic/plan-build-run --skill autonomous
Clone the repo
git clone --depth 1 https://github.com/SienkLogic/plan-build-run

Made for: Claude Code.

Or install pbr, the plugin that ships this one along with the rest of its 45 skills, 71 commands, 18 agents, 3 hooks.

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 autonomous

README.md
[![agentmods](https://agentmods.dev/badge/skills/sienklogic/plan-build-run/autonomous.svg)](https://agentmods.dev/skills/sienklogic/plan-build-run/autonomous)
Your own site
<a href="https://agentmods.dev/skills/sienklogic/plan-build-run/autonomous"><img src="https://agentmods.dev/badge/skills/sienklogic/plan-build-run/autonomous.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,046 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00020 $0.08046
Opus 5 $0.00010 $0.04023
Sonnet 5 $0.00004 $0.01609
Haiku 4.5 $0.00002 $0.00805

Measured 2d ago against content hash 604b26c93572, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

autonomous 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 2d 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.

plugins/pbr/skills/autonomous/SKILL.md · 552 lines

How it starts

The opening of the file, as written. The whole thing — 552 lines — stays where its author put it; the contents beside it link to each section on GitHub.

STOP — DO NOT READ THIS FILE. You are already reading it. This prompt was injected into your context by Claude Code's plugin system. Using the Read tool on this SKILL.md file wastes tokens. Begin executing Step 0 immediately.

/pbr:autonomous — Hands-Free Multi-Phase Execution

References: @references/questioning.md, @references/ui-brand.md

Step 0 — Immediate Output

Before ANY tool calls, display this banner:

╔══════════════════════════════════════════════════════════════╗
║  PLAN-BUILD-RUN ► AUTONOMOUS MODE                           ║
╚══════════════════════════════════════════════════════════════╝

Then proceed to Step 1.


Step 1: Config Gate and Parse Arguments

  1. Read .planning/config.json. Check workflow.autonomous — if false or missing, display:
Autonomous mode is disabled.

Enable with: /pbr:config set workflow.autonomous true

Stop immediately. Do NOT proceed.

  1. Parse $ARGUMENTS:
Argument Meaning Default
--from N Start from phase N Current phase from STATE.md
--through N Stop after phase N Last phase in current milestone
--speculative-depth N How many phases ahead to plan speculatively From config workflow.speculative_depth (default 2)
--dry-run Show which phases would execute without doing anything Off
  1. Determine speculative planning settings:

    • Read workflow.speculative_planning from config — if false, speculative depth = 0
    • Read workflow.speculative_depth from config (default: 2)
    • If --speculative-depth N provided, override config value
    • Store as speculativeDepth for use in Step 3
  2. Read gates.checkpoint_auto_resolve from config (default: "none"). Values:

    • "none": STOP on all checkpoints (user must resolve)
    • "verify-only": Auto-resolve checkpoint:human-verify (proceed after confidence-gate passes), STOP on checkpoint:human-action
    • "verify-and-decision": Auto-resolve verify + decision checkpoints, STOP on checkpoint:human-action
    • "all": Auto-resolve all checkpoints (dangerous — only for fully automated pipelines) Store as checkpointResolveLevel for use in Step 3c.
  3. Read .planning/STATE.md to determine current phase (used as default for --from).

  4. Read .planning/ROADMAP.md to build phase list for current milestone.

  5. CRITICAL (hook-enforced): Write .active-skill NOW. Write .planning/.active-skill with the content autonomous using the Write tool. This registers the autonomous session with the workflow enforcement hooks. Child Skill() calls (plan, build, review) will overwrite this with their own skill name during execution and should restore or re-write it — but the orchestrator owns the initial write and final cleanup.

  6. Filter to phases from --from through --through that are not yet complete.

  7. If no phases to execute, display: "All phases in range are complete." and stop.

Read the full file on GitHub · 552 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. 2d ago First seen · 552 lines · 20 tokens per session scan A 604b26c93572

Subscribe to this mod's changes

autonomous is a skill published in the GitHub repository SienkLogic/plan-build-run (17 stars, last pushed 5mo ago), licensed MIT. It adds 20 tokens to every session and 8,046 once invoked, about $0.0001 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 2026-09-03.

Related

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