autoplan

autoplan is a skill for Claude Code, Codex from implicit-labs/autosymph. It costs 50 tokens per session (6,821 once invoked), scanned A, original, MIT.

A feature-planning workflow that researches a request, asks questions, examines risks, and produces a product requirements document.

In plain words
What is it for?
Use it for structured planning through research, interviews, a premortem, PRD writing, and optional cross-agent review.
Why use it?
It turns a broad feature idea or Linear issue into a clearer implementation plan. It also supports review and optional automated interview steps.

Skill for Claude CodeCodex

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/implicit-labs/autosymph/autoplan
Any agent
npx skills add implicit-labs/autosymph --skill autoplan
Clone the repo
git clone --depth 1 https://github.com/implicit-labs/autosymph

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 autoplan

README.md
[![agentmods](https://agentmods.dev/badge/skills/implicit-labs/autosymph/autoplan.svg)](https://agentmods.dev/skills/implicit-labs/autosymph/autoplan)
Your own site
<a href="https://agentmods.dev/skills/implicit-labs/autosymph/autoplan"><img src="https://agentmods.dev/badge/skills/implicit-labs/autosymph/autoplan.svg" alt="Measured on agentmods" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,821 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00050 $0.06821
Opus 5 $0.00025 $0.03410
Sonnet 5 $0.00010 $0.01364
Haiku 4.5 $0.00005 $0.00682

Measured 4d ago against content hash 64f7a3bcb0f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

autoplan scanned grade A with 1 finding 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 4d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (test.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

If the description or any comment contains image attachments (Linear renders them as `![...](https://uploads.linear.app/...)` markdown), pull them in with `mcp__linear__extract_images` (pass the markdown). Do NOT `curl`
skills/autoplan/SKILL.md · 590 lines

How it starts

The opening of the file, as written. The whole thing — 590 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan Phase Orchestrator

Research, Interview, Premortem, PRD, (optional) cross-harness review.

Input: $ARGUMENTS — Linear issue ID (like "ISSUE-123") or feature description, plus optional flags.

Skills used: codebase-explore, documentation-explore, web-research (optional)

Flags: Parsed from $ARGUMENTS. Flags can appear anywhere in the arguments.

Flag Variable Default Effect
claude-codex harness preset default Claude plans, Codex answers automated questions, Codex reviews first
codex-claude harness preset none Codex plans, Claude answers automated questions, Claude reviews first
codex harness preset none Short alias for codex-claude; /autoplan codex ... flips the harnesses
--auto IS_AUTO false Configured question harness answers interview questions instead of user
--codex-review IS_CODEX_REVIEW false Enables review loop after drafting (review harness first; opposite harness fallback if unavailable)
--skip-planning-transition IS_SKIP_PLANNING_TRANSITION false Skips Step-1 move to Linear "Planning". Use when caller is autosymph-autoplan, where the issue already lives in "Autoplan" and stays there until Step 7.7 moves it to "Ready".
`--planner-harness=claude codex` PLANNER_HARNESS preset default (claude)
`--question-harness=codex claude` QUESTION_HARNESS preset default (codex)
`--review-harness=codex claude` REVIEW_HARNESS preset default (codex)
--codex-model=<id> CODEX_MODEL gpt-5.4 Model passed to codex exec -m <id>. If gpt-5.4 is deprecated, override here.
--claude-review-model=<id> CLAUDE_REVIEW_MODEL claude-opus-4-7 Model used by the Claude-as-reviewer fallback Agent when Codex is unavailable.

Mode matrix:

Flags Interview Review Use case
(none) User answers No review Quick planning with user
--auto Preset question harness answers No review Headless autoplan, no human
--codex-review User answers Configured review harness loop Formal planning with user
--auto --codex-review Preset question harness answers Configured review harness loop Full autonomous planning
codex --auto --codex-review Claude answers Claude loop over Codex plan Full autonomous planning with flipped harnesses
--auto --codex-review --skip-planning-transition Preset question harness answers Configured review harness loop Headless under autosymph "Autoplan" Linear state (ISSUE-123)

Pipeline context: See WORKFLOW.md for the full Triage → Done pipeline. Permissions: See PERMISSIONS.md for the allow-list needed to run autonomously.


Read the full file on GitHub · 590 lines

Files

What ships with it

3 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. 4d ago First seen · 590 lines · 50 tokens per session scan A 64f7a3bcb0f5

Subscribe to this mod's changes

autoplan is a skill published in the GitHub repository implicit-labs/autosymph (5 stars, last pushed 10d ago), licensed MIT. It adds 50 tokens to every session and 6,821 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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