plan-attest

plan-attest is a command for Claude Code from OthmanAdi/planning-with-files. It costs 64 tokens per session (456 once invoked), scanned A, original, MIT.

A command that records a SHA-256 hash, a fixed digital fingerprint, of the active task plan. Later hooks compare the plan with that fingerprint before providing its contents to the agent.

In plain words
What is it for?
It helps attest, inspect, or clear the verification record for a task plan in parallel-plan or legacy planning setups.
Why use it?
It can detect changes to the plan and block its automatic injection when the file no longer matches the recorded version.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the planning-with-files plugin — 6 skills, 15 commands, 9 hooks shipped together

Good fit It helps attest, inspect, or clear the verification record for a task plan in parallel-plan or legacy planning setups.

Compare 6 commands from other repositories ↓
About the project

OthmanAdi/planning-with-files is a planning system that stores an AI coding agent's task plan, findings, and progress in project files so the work can be recovered after context resets, crashes, or compaction. It is for long-running coding tasks across many agent tools, including Claude Code, Codex CLI, and Cursor. The catalogue entries are the project's commands, hooks, skills, plugin, and instruction for maintaining those planning files.

OthmanAdi/planning-with-files · 27,535 stars · on GitHub · gilded-laurel-c7nj.here.now

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add OthmanAdi/planning-with-files
Claude Code
/plugin install planning-with-files

Made for: Claude Code.

Or install planning-with-files, the plugin that ships this one along with the rest of its 6 skills, 15 commands, 9 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-attest

README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/commands/othmanadi/planning-with-files/plan-attest"><img src="https://agentmods.dev/badge/commands/othmanadi/planning-with-files/plan-attest.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 456 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.
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 $0.00064 $0.00456
Opus 5.5 $0.00026 $0.00182
Sonnet 5.5 $0.00013 $0.00091
Haiku 4.5 $0.00006 $0.00046

Measured 1mo ago against content hash a5e6adb867c2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

plan-attest 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 1mo 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.

commands/plan-attest.md · 27 lines

What it actually says

Run the plan attestation helper for the active plan.

Steps:

  1. Resolve the active plan: prefer ${PLAN_ID} env var, then .planning/.active_plan, then newest .planning/<dir>/. If the current directory is itself a valid .planning/<slug>/ directory, use its task_plan.md. Otherwise use legacy ./task_plan.md.
  2. Compute the SHA-256 of the resolved task_plan.md.
  3. Write the hex digest to .planning/<active-plan>/.attestation (parallel-plan mode) or ./.plan-attestation (legacy mode).
  4. Confirm to the user with the short hash (first 12 hex chars) and the storage path.

An explicit ${PLAN_ID} or ${PWF_PLAN_ROOT} that does not resolve exits with an error. It never falls back to another plan.

Implementation:

  • On Linux/macOS/Git Bash: sh ${CLAUDE_PLUGIN_ROOT}/scripts/attest-plan.sh
  • On Windows PowerShell plugin installs: & "$env:CLAUDE_PLUGIN_ROOT\scripts\attest-plan.ps1"
  • On Windows PowerShell standalone installs: & "$env:USERPROFILE\.claude\skills\planning-with-files\scripts\attest-plan.ps1"

Flags:

  • --show — print the currently stored hash and where it lives.
  • --clear — remove the attestation (re-open the plan to free editing).

After running this command, every UserPromptSubmit and PreToolUse hook fire compares task_plan.md against the stored hash. If they diverge, the hook emits [PLAN TAMPERED — injection blocked] instead of feeding plan content into the model. Re-run /plan-attest whenever you intentionally edit and re-approve the plan.

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. 1mo ago Changed · +2 lines a5e6adb867c2
  2. 1mo ago First seen · 25 lines · 64 tokens per session scan A ae3f009bdfd3

Subscribe to this mod's changes

plan-attest is a command published in the GitHub repository OthmanAdi/planning-with-files (27,535 stars, last pushed 2d ago), licensed MIT. It adds 64 tokens to every session and 456 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.