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.
npx skills add Beaulewis1977/claude-plugin-for-codex --skill claude-brainstormgit clone --depth 1 https://github.com/Beaulewis1977/claude-plugin-for-codexWrote 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/beaulewis1977/claude-plugin-for-codex/claude-brainstorm)<a href="https://agentmods.dev/skills/beaulewis1977/claude-plugin-for-codex/claude-brainstorm"><img src="https://agentmods.dev/badge/skills/beaulewis1977/claude-plugin-for-codex/claude-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/beaulewis1977/claude-plugin-for-codex/claude-brainstorm"><img src="https://agentmods.dev/badge/skills/beaulewis1977/claude-plugin-for-codex/claude-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 | $0.00036 | $0.00449 |
| Opus 5 | $0.00018 | $0.00225 |
| Sonnet 5 | $0.00007 | $0.00090 |
| Haiku 4.5 | $0.00004 | $0.00045 |
Grade A, and why
claude-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 10d 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.
What it actually says
Claude Brainstorm
Use Claude to widen the option space, expose assumptions, and compare trade-offs before Codex synthesizes a direction.
When to brainstorm
Codex may use this skill proactively before a consequential architecture, design, debugging, migration, security, or release choice that benefits from divergent ideas. Disclose the consultation. Do not use it for trivial work or recursive delegation. Default to one consultation per decision unless the user asks again or materially new evidence appears.
Workflow
- Supply the goal, relevant context, constraints, assumptions, explored ideas, and the dimensions on which alternatives should differ. Ask for distinct options, trade-offs, risks, and promising directions rather than one answer.
- Resolve
<plugin-root>/scripts/claude-companion.mjsto an absolute path. - Make exactly one runtime invocation. Runtime action:
brainstorm. - Pass
--cwdwith the current workspace and--jsonas separate arguments. Classify routine or bounded work as normal, substantial reasoning as hard, and the most complex or high-stakes work as very-hard. Pass that classification with--tier. Explicit model and effort selections always win. Honor explicit background and session choices. - Write the free-form task and context to stdin. Never place task text in an option, argument, or shell command. Use an argument array; never concatenate or interpolate values into a shell command. Use the execution tool's separate stdin channel; if it exposes an interactive process session, send the text there and explicitly close stdin before waiting.
- Keep this read-only. The runtime forces plan permission and safe-mode. Never edit, write, fix, or apply changes, and do not request bypass permissions.
- Attribute the ideas to Claude and keep them separate from evaluation. Codex owns the final synthesis, recommendation, and user-facing answer.
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.
- 10d ago First seen · 41 lines · 36 tokens per session scan A cbd89d611168
claude-brainstorm is a skill published in the GitHub repository Beaulewis1977/claude-plugin-for-codex (3 stars, last pushed 1mo ago), licensed MIT. It adds 36 tokens to every session and 449 once invoked, about $0.0002 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.
Other skills, from other repositories
taiyi-ui-design
A design-planning guide for describing how an application's user interface should look and behave. It produces a UI-DESIGN.md document covering layouts, components, interactions, accessibility, and error states.
taiyi-evolve
A workflow skill that compares the implemented code with the frozen design after development and testing. It records architecture changes and proposes updates to DESIGN.md, the document describing the intended system structure.
flow-next-tracker-sync
Project a flow-next spec to a tracker issue (Linear, GitHub, GitLab, Jira) and reconcile two-way. Use when asked to sync to a tracker. NOT plan-sync.
taiyi-diagram-c4
A code-scanning tool that builds C4 architecture documents from a repository. It separates facts observed in the code from conclusions inferred about the design and uses Mermaid diagrams as the source format.
flow-next-resolve-pr
Resolve PR review feedback. Fetches unresolved threads, triages, fixes, replies and resolves via GraphQL. Use when asked to address review comments.
writing-style
Use for technical communication - GitHub/GitLab tickets, PR/MR descriptions, issue comments, code review comments, commit messages. Direct, brief style with no AI-speak. NOT for README.md, public docs, or blog posts.