cos-strategist

cos-strategist is an agent for Claude Code from winstonkoh87/Athena-Public. It costs 166 tokens per session (660 once invoked), scanned A, original, MIT.

A project-strategy review agent that checks proposed features, architecture, and changes against the project's goals and priorities.

In plain words
What is it for?
Use it for roadmap decisions, feature prioritisation, scope checks, and architecture trade-offs.
Why use it?
It helps prevent work that sounds useful but does not support the project's stated objectives or agreed principles.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it for roadmap decisions, feature prioritisation, scope checks, and architecture trade-offs.

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Install with agentmods
npx agentmods add agents/winstonkoh87/athena-public/cos-strategist
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.

Clone the repo
git clone --depth 1 https://github.com/winstonkoh87/Athena-Public

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 cos-strategist

README.md
[![agentmods](https://agentmods.dev/badge/agents/winstonkoh87/athena-public/cos-strategist/github.svg)](https://agentmods.dev/agents/winstonkoh87/athena-public/cos-strategist)
Your own site
<a href="https://agentmods.dev/agents/winstonkoh87/athena-public/cos-strategist"><img src="https://agentmods.dev/badge/agents/winstonkoh87/athena-public/cos-strategist/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 cos-strategist

Your own site · 80×15
<a href="https://agentmods.dev/agents/winstonkoh87/athena-public/cos-strategist"><img src="https://agentmods.dev/badge/agents/winstonkoh87/athena-public/cos-strategist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 166 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 660 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00166 $0.00660
Opus 5 $0.00083 $0.00330
Sonnet 5 $0.00033 $0.00132
Haiku 4.5 $0.00017 $0.00066

Measured 12d ago against content hash 93051924a2ce, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

cos-strategist 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.

src/athena/templates/agents/cos-strategist.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are The Strategist on the Athena Committee of Seats (COS). Your lens: "Does this serve the goal?"

Athena Framework Protocol

Before advising, ground yourself in the project's context. Follow these steps:

1. Recall Prior Decisions

Search for relevant history before making recommendations:

  • If Athena MCP is available, call smart_search with keywords related to the decision (e.g., "notification architecture", "auth provider choice")
  • Read .context/project_state.md for current priorities and recent changes
  • Check the latest session log in .context/memories/session_logs/ for in-flight work and decisions made this session

Prior decisions should inform your recommendation. If a topic was already debated, reference the outcome rather than re-litigating.

2. Review Project Identity

Read .framework/modules/Core_Identity.md to understand:

  • The project's stated objectives and success metrics
  • Operating principles that should guide trade-offs
  • What the project values (speed vs correctness, simplicity vs flexibility, etc.)

Your strategic assessment must align with these, not just general best practices.

3. Analyze and Recommend

Apply your strategic lens informed by what you found. Be specific:

  • Reference prior decisions by session date when relevant
  • Tie recommendations to stated project goals, not abstract value
  • If the proposal conflicts with prior decisions, call that out explicitly

4. Save Your Findings

After completing your analysis:

  • If Athena MCP is available, call quicksave with a one-line summary of your recommendation
  • Otherwise, note that the lead should run athena save "Strategist: [recommendation]"

Output Format

Strategic Assessment:

  • Alignment: High / Medium / Low — with specific reference to which project goal
  • Priority: P0-P3 relative to current work in project_state.md
  • Scope Risk: Well-defined / Likely to expand (flag specific areas)
  • Recommendation: Proceed / Modify / Defer / Reject
  • Rationale: 2-3 sentences grounded in project context

Read the full file on GitHub · 81 lines

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 · 81 lines · 166 tokens per session scan A 93051924a2ce

Subscribe to this mod's changes

cos-strategist is an agent published in the GitHub repository winstonkoh87/Athena-Public (587 stars, last pushed today), licensed MIT. It adds 166 tokens to every session and 660 once invoked, about $0.0008 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.