A skill for carrying out an already approved implementation plan. It works through the plan’s steps, checks the results, records progress, and verifies that the changes stay within scope.

Use it after an approved plan exists and the task is ready to execute, including running checks, updating progress, and committing completed changes when appropriate.

It turns a written plan into tracked implementation work while preserving evidence about what was completed. It also stops when the plan conflicts with the project’s current goals or lacks the required approval.

execute — Skill for Claude Code and Codex by 0xmariowu

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.

Any agent

npx skills add 0xmariowu/builders-dont-cry --skill execute

Clone the repo

git clone --depth 1 https://github.com/0xmariowu/builders-dont-cry

Made for: Claude Code, Codex.

Or install builders-dont-cry, the plugin that ships this one along with the rest of its 12 skills, 10 commands, 3 agents, 5 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/0xmariowu/builders-dont-cry/execute.svg)](https://agentmods.dev/skills/0xmariowu/builders-dont-cry/execute)

Your own site

<a href="https://agentmods.dev/skills/0xmariowu/builders-dont-cry/execute"><img src="https://agentmods.dev/badge/skills/0xmariowu/builders-dont-cry/execute.svg" alt="Measured on agentmods" height="20"></a>

Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 5,215 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.

Model	Per session	Once invoked
Fable 5.1	$0.00079	$0.05215
Opus 5	$0.00039	$0.02608
Sonnet 5	$0.00016	$0.01043
Haiku 4.5	$0.00008	$0.00522

Measured 7d ago against content hash 0e0675de5e65, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

execute 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 7d 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.

core/skills/execute/SKILL.md · 227 lines

How it starts

The opening of the file, as written. The whole thing — 227 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/execute — Let's fucking go: execute plan steps with dispatch + TDD loop

Step 0: Escape Hatch

If builder says 别走流程, 直接做, 简单点, or 不走地图, do not force /execute. Acknowledge once and do the smallest direct action.

Exception: do not bypass safety gates for destructive changes, secret access, public upload, deploy, database migration, force push, or irreversible writes.

Step 0.5: Project Goal Check

If PROJECT_GOAL.md exists in the target root, read it before execution. If the approved plan conflicts with current_phase, exit_criteria, or out_of_scope, stop and ask whether to update the goal or return to /plan. Do not edit PROJECT_GOAL.md automatically.

Contract

Each invocation:

Find candidate plans via bash ${BDC_HOME:-$HOME/.bdc}/scripts/active-plan-resolver.sh --list — resolver scans repo .bdc/plans/ ∪ ${BDC_HOME:-$HOME/.bdc}/plans/, applies INDEX-status / mtime / unfinished-checkbox filters. If multiple filesystem candidates appear, resolve from current-session evidence before asking: explicit plan path/name in the prompt, the plan just created/reviewed/approved in this session, a current-plan cursor if present, current repo target root, or a clear project/topic match. If one candidate is uniquely supported, use it and state the reason. Ask builder only when no unique candidate remains after session-context resolution, or when the next action is destructive/irreversible.
Read the plan header + the first unchecked - [ ] Step
Look up <role> in ${BDC_HOME:-$HOME/.bdc}/standards/model-router.md and dispatch accordingly
Run the verify command to collect evidence
Pass → commit → change - [ ] to - [x] in the plan → move to the next Step
Fail → root cause (${BDC_HOME:-$HOME/.bdc}/standards/debugging.md) → retry once with the same role → if still failing, escalate to Opus or report to builder

Iron Law

NO COMPLETION CLAIMS WITHOUT FRESH VERIFICATION EVIDENCE

Before claiming a Step is complete, in this message, you must have run the verify command and seen the output. These 6 excuses are all invalid:

Read the full file on GitHub · 227 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.

7d ago First seen · 227 lines · 79 tokens per session scan A 0e0675de5e65

Subscribe to this mod's changes

execute is a skill published in the GitHub repository 0xmariowu/builders-dont-cry (4 stars, last pushed 4mo ago), licensed MIT. It adds 79 tokens to every session and 5,215 once invoked, about $0.0004 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 2026-08-31.

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