mission-brief

mission-brief is a skill for Claude Code from tikalk/adlc-team-skills. It costs 99 tokens per session (6,986 once invoked), scanned A, original, MIT.

A feature-planning workflow that turns a description into a mission brief, ordered steps, and prompts for coding subagents. It guides work from defining the feature to implementing and checking it.

In plain words
What is it for?
Use it to take a feature from an initial idea through specification, planning, implementation, and review. It is intended for larger end-to-end changes, not small edits.
Why use it?
It removes the need to manually organise a large feature across several development stages. It also supports continuing or running the work across sessions.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: reads .claude/ paths; mentions subagents; mentions OpenCode.

Good fit Use it to take a feature from an initial idea through specification, planning, implementation, and review. It is intended for larger end-to-end changes, not small edits.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tikalk/adlc-team-skills/mission-brief
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 tikalk/adlc-team-skills --skill mission-brief
Clone the repo
git clone --depth 1 https://github.com/tikalk/adlc-team-skills

Made for: Claude Code.

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 mission-brief

README.md
[![agentmods](https://agentmods.dev/badge/skills/tikalk/adlc-team-skills/mission-brief/github.svg)](https://agentmods.dev/skills/tikalk/adlc-team-skills/mission-brief)
Your own site
<a href="https://agentmods.dev/skills/tikalk/adlc-team-skills/mission-brief"><img src="https://agentmods.dev/badge/skills/tikalk/adlc-team-skills/mission-brief/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for mission-brief

Your own site · 80×15
<a href="https://agentmods.dev/skills/tikalk/adlc-team-skills/mission-brief"><img src="https://agentmods.dev/badge/skills/tikalk/adlc-team-skills/mission-brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,986 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 71
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 161
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 162
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 584
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
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 $0.00099 $0.06986
Opus 5 $0.00049 $0.03493
Sonnet 5 $0.00020 $0.01397
Haiku 4.5 $0.00010 $0.00699

Measured 12d ago against content hash 56423a5f3ab3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

mission-brief 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 12d 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.

skills/mission-brief/SKILL.md · 641 lines

How it starts

The opening of the file, as written. The whole thing — 641 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mission-brief

What this skill does

mission-brief takes a feature description, structures it into a Mission Brief (goal, constraints, success criteria), generates an ordered step list with prompts, and executes those steps — each step dispatched to a subagent whose prompt triggers the installed SDD skills. No YAML workflow files, no per-framework profiles, no profile detection. The step prompts use canonical SDD terminology (specify, plan, implement, converge) that works with any SDD skill set — model-invoked skills auto-trigger, command-based frameworks match by filename, and if neither exists the subagent executes directly.

When to use

  • "Build this feature end to end": you give a description, mission-brief composes the pipeline and runs specify → plan → implement ↔ converge.
  • You want a converge loop with a circuit breaker and an audit trail.
  • You want to resume an interrupted mission across sessions (mission-brief --resume).
  • You want to run unattended across sessions (mission-brief --async).

When NOT to use

  • A single small edit — just do it; a mission is overhead.
  • You already have a spec and tasks and only want to implement one task — invoke the implement skill directly.

Mission Brief template

Before generating steps, the description is structured into:

## Mission Brief

**Goal**: <what to build — one sentence>
**Constraints**: <tech stack, limitations, dependencies, requirements>
**Non-Goals**: <what is explicitly out of scope — e.g., "no database storage, local memory cache only">
**Success Criteria**:
- <measurable outcome 1>
- <measurable outcome 2>
- <measurable outcome 3>

The brief serves two purposes:

  1. Forces explicit done-criteria upfront — feeds the converge step's independence check (the checker verifies against these criteria).
  2. Carries mission context into every step's delegation prompt so each subagent has full context without re-reading prior steps.

Inputs

Read the full file on GitHub · 641 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. 12d ago First seen · 641 lines · 99 tokens per session scan A 56423a5f3ab3

Subscribe to this mod's changes

mission-brief is a skill published in the GitHub repository tikalk/adlc-team-skills (133 stars, last pushed today), licensed MIT. It adds 99 tokens to every session and 6,986 once invoked, about $0.0005 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 2026-08-30.

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