goalcraft

A writing tool that turns a rough goal or unclear task brief into a precise objective for Codex, an autonomous coding agent.

In plain words
What is it for?
Draft, improve, format, and test Codex goal prompts without starting the goal automatically.
Why use it?
It helps define a clear end result and completion evidence so long-running coding work has a focused target.

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/leefowlercu/agent-kit/goalcraft
Any agent
npx skills add leefowlercu/agent-kit --skill goalcraft
Clone the repo
git clone --depth 1 https://github.com/leefowlercu/agent-kit

Made for: Claude Code, Codex.

Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,714 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00064 $0.01714
Opus 5 $0.00032 $0.00857
Sonnet 5 $0.00013 $0.00343
Haiku 4.5 $0.00006 $0.00171

Measured 2d ago against content hash 08e3c2de2e24, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

goalcraft 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 2d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/validate_goal_length.js), 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.

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.

plugins/goalcraft/skills/goalcraft/SKILL.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Goalcraft

Core Contract

Convert messy intent into a compact, activation-ready Codex /goal objective that keeps the agent moving until real completion evidence exists. The returned goal objective must be 4,000 characters or fewer, and the normal working target is 2,800 characters. Prefer drafting the goal text only. Do not call create_goal, thread/goal/set, or otherwise activate a goal unless the user explicitly asks to start or set it.

For current Codex /goal mechanics, read references/codex-goal-contract.md when the exact runtime behavior matters.

Workflow

  1. Identify the rough objective, workspace, and expected end state.

    • If the user supplied a draft, preserve their intent and tighten it.
    • If a repo or files are mentioned, inspect them before finalizing the goal.
    • If a critical success criterion is missing, ask the smallest necessary question; otherwise state assumptions.
  2. Shape the goal around evidence, not effort. Use this list as input thinking, not as required output structure.

    • Destination: what must be true at the end.
    • Starting point: current context, repo, branch, artifact, issue, or known state.
    • Core objective: the concrete work to complete.
    • Scope: files, directories, systems, or task boundaries the agent should stay within.
    • Deliverables: concrete artifacts such as code paths, tests, PRs, reports, screenshots, or logs.
    • Must not regress: constraints, behavior to preserve, safety boundaries.
    • Autonomy rules: when to continue, when to ask, what to verify directly.
    • Checkpoint rhythm: how often to test, review, summarize progress, or pause.
    • Verification gates: commands, inspections, screenshots, evals, or other proof loops.
    • Done when: artifact-level acceptance criteria.
    • Stop conditions: blockers, destructive actions, missing credentials, user approval boundaries.
    • Success metric: the observable result that proves completion.
  3. Keep the objective usable by Codex.

    • Hard limit: the objective text after /goal must be 4,000 characters or fewer.
    • Normal target: draft to 2,800 characters or fewer.
    • Strict fallback ceiling: do not return a normal goal above 3,400 characters.
    • Treat 3,800 characters or more as a failed draft even if it is technically below the hard limit.
    • Put useful but nonessential detail in companion notes outside the /goal payload.
    • Make every requirement auditable against files, commands, PR state, logs, screenshots, or explicit user confirmation.
    • Include exact commands only when they are already known from the repo or user.
    • Avoid hidden flags in slash text. /goal --tokens 50K ... is literal objective text in the TUI, not parsed syntax.
    • If a token budget is requested, present it separately from the objective text unless the target surface supports a separate budget field.
    • For complex or ambiguous work, recommend a planning/interview pass before setting the goal.
    • For very large work, include subagent/orchestration guidance only when the current Codex environment supports subagents and the work can be split into bounded, reviewable lanes.

Read the full file on GitHub · 133 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. 2d ago First seen · 133 lines · 64 tokens per session scan A 08e3c2de2e24

Subscribe to this mod's changes

goalcraft is a skill published in the GitHub repository leefowlercu/agent-kit (6 stars, last pushed 29d ago), licensed MIT. It adds 64 tokens to every session and 1,714 once invoked, about $0.0003 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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