execute-plan

execute-plan is a command for coding agents from axiomantic/spellbook. It costs 23 tokens per session (319 once invoked), scanned A, original, MIT.

Execute implementation plans with structured review checkpoints. Use when you have a plan document and want faithful, evidence-based execution.

Command

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 commands/axiomantic/spellbook/execute-plan
Clone the repo
git clone --depth 1 https://github.com/axiomantic/spellbook

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 execute-plan

README.md
[![agentmods](https://agentmods.dev/badge/commands/axiomantic/spellbook/execute-plan.svg)](https://agentmods.dev/commands/axiomantic/spellbook/execute-plan)
Your own site
<a href="https://agentmods.dev/commands/axiomantic/spellbook/execute-plan"><img src="https://agentmods.dev/badge/commands/axiomantic/spellbook/execute-plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 319 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00023 $0.00319
Opus 5 $0.00012 $0.00160
Sonnet 5 $0.00005 $0.00064
Haiku 4.5 $0.00002 $0.00032

Measured today against content hash 4d9f434d63f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

execute-plan 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 today.

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/execute-plan.md · 49 lines

What it actually says

Execute Plan

Invoke executing-plans skill to execute implementation plans with verification and review gates.

Invariant Principles

  1. Plan Fidelity - Plans encode architect decisions. Deviation without approval corrupts the contract.
  2. Evidence Over Claims - Task completion requires verification output. Never mark complete without proof.
  3. Blocking Over Guessing - Uncertainty halts execution. Wrong guesses compound; asking costs one exchange.

Protocol

  1. Load executing-plans skill
  2. Follow skill instructions exactly - no interpretation, no improvisation
  3. Respect all review checkpoints and verification gates
  4. Stop on uncertainty; ask rather than guess
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. today First seen · 49 lines · 23 tokens per session scan A 4d9f434d63f4

Subscribe to this mod's changes

execute-plan is a command published in the GitHub repository axiomantic/spellbook (10 stars, last pushed today), licensed MIT. It adds 23 tokens to every session and 319 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.