plan

plan is a skill for Claude Code, Codex from synaptiai/agent-capability-standard. It costs 37 tokens per session (2,790 once invoked), scanned C, original, Apache-2.0.

A capability for turning a goal into an executable sequence of steps with dependencies, checks, safety checkpoints, and rollback strategies. It is intended to prepare work before changes are made.

In plain words
What is it for?
Use it to plan code changes, workflow designs, and other multi-step operations, especially when some steps can permanently alter state.
Why use it?
It exposes missing dependencies and recovery options before execution begins. This helps make multi-step work easier to verify and safer to carry out.

Skill for Claude CodeCodex

Part of the agent-capability-standard plugin — 42 skills, 2 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/synaptiai/agent-capability-standard/plan
Any agent
npx skills add synaptiai/agent-capability-standard --skill plan
Clone the repo
git clone --depth 1 https://github.com/synaptiai/agent-capability-standard

Made for: Claude Code, Codex.

Or install agent-capability-standard, the plugin that ships this one along with the rest of its 42 skills, 2 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 plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/synaptiai/agent-capability-standard/plan.svg)](https://agentmods.dev/skills/synaptiai/agent-capability-standard/plan)
Your own site
<a href="https://agentmods.dev/skills/synaptiai/agent-capability-standard/plan"><img src="https://agentmods.dev/badge/skills/synaptiai/agent-capability-standard/plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,790 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 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 $0.00037 $0.02790
Opus 5 $0.00018 $0.01395
Sonnet 5 $0.00007 $0.00558
Haiku 4.5 $0.00004 $0.00279

Measured 4d ago against content hash 2ced876874b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

plan scanned grade C 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.

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.

Instruction-override phrasinghighPrompt injection

Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.

- Never generate plans that bypass safety constraints
skills/plan/SKILL.md · 336 lines

How it starts

The opening of the file, as written. The whole thing — 336 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Intent

Create a structured, executable plan that decomposes a goal into ordered steps with clear dependencies, verification criteria for each step, checkpoint placement for safety, and rollback strategies for recovery.

This capability is the GATEWAY to all actions. No mutating operation should proceed without a validated plan.

Success criteria:

  • Goal is decomposed into atomic, verifiable steps
  • Dependencies form a valid DAG (no cycles)
  • Each mutating step has rollback strategy defined
  • Checkpoints placed before high-risk operations
  • Estimated risk level accurately reflects plan complexity

Compatible schemas:

  • schemas/output_schema.yaml

Inputs

Parameter Required Type Description
goal Yes string Clear statement of what the plan should achieve
context No object Current state, available resources, constraints
constraints No object Time limits, resource bounds, policy restrictions
risk_tolerance No string low, medium, high - affects checkpoint frequency
max_steps No integer Maximum number of steps to generate

Procedure

  1. Understand the goal: Parse and clarify the objective

    • Identify success criteria explicitly
    • Detect ambiguity and resolve or flag it
    • Determine scope boundaries
  2. Analyze context: Gather relevant information

    • Read minimal files needed to understand current state
    • Identify existing patterns and conventions
    • Note constraints from environment or policy
  3. Decompose into steps: Break goal into atomic operations

    • Each step should be independently verifiable
    • Prefer small, reversible changes
    • Order by logical dependencies
    • Use decompose capability patterns
  4. Define dependencies: Map step relationships

    • Create DAG of step dependencies
    • Identify parallel-safe steps
    • Flag blocking dependencies
  5. Add verification criteria: Specify how to check each step

    • Define concrete, testable conditions
    • Include expected outputs or state changes
    • Reference files or commands for verification

Read the full file on GitHub · 336 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. 4d ago First seen · 336 lines · 37 tokens per session scan C 2ced876874b6

Subscribe to this mod's changes

plan is a skill published in the GitHub repository synaptiai/agent-capability-standard (4 stars, last pushed 5d ago), licensed Apache-2.0. It adds 37 tokens to every session and 2,790 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (instruction-override phrasing). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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