Borrowing it
Nothing to install: this file belongs to tincopper/neeko. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/tincopper/neeko/main/.agents/skills/trellis-brainstorm/SKILL.mdgit clone --depth 1 https://github.com/tincopper/neekoWrote 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.
[](https://agentmods.dev/skills/tincopper/neeko/trellis-brainstorm)<a href="https://agentmods.dev/skills/tincopper/neeko/trellis-brainstorm"><img src="https://agentmods.dev/badge/skills/tincopper/neeko/trellis-brainstorm/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.
<a href="https://agentmods.dev/skills/tincopper/neeko/trellis-brainstorm"><img src="https://agentmods.dev/badge/skills/tincopper/neeko/trellis-brainstorm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00065 | $0.02007 |
| Opus 5 | $0.00032 | $0.01004 |
| Sonnet 5 | $0.00013 | $0.00401 |
| Haiku 4.5 | $0.00006 | $0.00201 |
Grade A, and why
trellis-brainstorm 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 8d 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.
This is a copy
91% identical to trellis-brainstorm — 24 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Trellis Brainstorm
Non-Negotiable Interview Contract
Interview me relentlessly about every aspect of this plan until we reach a shared understanding. Walk down each branch of the design tree, resolving dependencies between decisions one-by-one. For each question, provide your recommended answer.
Ask the questions one at a time.
Non-Negotiable Evidence Rule
If a question can be answered by exploring the codebase, explore the codebase instead.
This is mandatory. Before asking the user a question, first check whether the answer is already available in code, tests, configs, docs, existing specs, or task history.
Do not ask the user to confirm facts that the repository can answer. Ask only for product intent, preference, scope, risk tolerance, or decisions that remain ambiguous after inspection.
Use this skill during Phase 1 planning to turn the user's request into clear requirements and planning artifacts.
Preconditions
Use this skill only for L2 complex tasks (per the complexity classification in workflow.md Request Triage). L1 simple/lightweight tasks must NOT create a Trellis task — implement them inline with trellis-before-dev and quality checks.
Before creating a task, classify the request:
| 级别 | 判定条件 | 行动 |
|---|---|---|
| L1 简单/轻量 | 单一关注点；改动 ≤ 3 个文件且在同一层/同一 feature；无跨层；无设计/API 决策；单次会话可完成 | 不创建任务。不要加载本 skill；直接内联实现。 |
| L2 复杂 | 多关注点/多交付物；跨层或多包；新功能或需设计权衡；API/契约/迁移变更；高风险长周期 | 先确认用户同意创建任务，再进入本 skill。 |
Use this skill only after task-creation consent has been given (for an L2 task) and the user is ready to enter Trellis planning.
If no task exists yet, create one:
TASK_DIR=$(python3 ./.trellis/scripts/task.py create "<short task title>" --slug <slug>)
Use a concise title from the user's request. Use a slug without a date prefix. task.py create adds the MM-DD- directory prefix automatically.
task.py create creates the default prd.md. Update that file with the current understanding before asking follow-up questions.
What ships with it
1 file 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.
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.
- 8d ago First seen · 190 lines · 65 tokens per session scan A 9b430f2b2019
trellis-brainstorm is a skill published in the GitHub repository tincopper/neeko (11 stars, last pushed 4d ago), licensed Apache-2.0. It adds 65 tokens to every session and 2,007 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to trellis-brainstorm, differing in 24 lines, and is treated as a copy.
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