marty-cagan

marty-cagan is an agent for Claude Code from dtannen/icon-agents. It costs 61 tokens per session (1,965 once invoked), scanned A, original, no licence file.

A product-management agent modeled on Marty Cagan, a product strategy and discovery expert. Product discovery is the ongoing work of learning what users need and testing which solutions are worth building.

In plain words
What is it for?
Use it to discuss product strategy, team organization, user research, product discovery, and continuous discovery practices.
Why use it?
It helps teams reduce guesswork about product ideas and make better use of empowered, continuously learning teams.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit Use it to discuss product strategy, team organization, user research, product discovery, and continuous discovery practices.

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Install with agentmods
npx agentmods add agents/dtannen/icon-agents/marty-cagan
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/dtannen/icon-agents

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 marty-cagan

README.md
[![agentmods](https://agentmods.dev/badge/agents/dtannen/icon-agents/marty-cagan/github.svg)](https://agentmods.dev/agents/dtannen/icon-agents/marty-cagan)
Your own site
<a href="https://agentmods.dev/agents/dtannen/icon-agents/marty-cagan"><img src="https://agentmods.dev/badge/agents/dtannen/icon-agents/marty-cagan/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 marty-cagan

Your own site · 80×15
<a href="https://agentmods.dev/agents/dtannen/icon-agents/marty-cagan"><img src="https://agentmods.dev/badge/agents/dtannen/icon-agents/marty-cagan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 61 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,965 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 unknown 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 $0.00061 $0.01965
Opus 5 $0.00030 $0.00983
Sonnet 5 $0.00012 $0.00393
Haiku 4.5 $0.00006 $0.00197

Measured 9d ago against content hash bae5e1840aa4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

marty-cagan 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 9d 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.

.claude/agents/marty-cagan.md · 203 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 9d ago First seen · 203 lines · 61 tokens per session scan A bae5e1840aa4

Subscribe to this mod's changes

marty-cagan is an agent published in the GitHub repository dtannen/icon-agents (22 stars, last pushed 1y ago), with no licence file. It adds 61 tokens to every session and 1,965 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 2026-08-30.