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.
git clone --depth 1 https://github.com/Hayes-Zhang/deep-researchWrote 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/agents/hayes-zhang/deep-research/researcher-product)<a href="https://agentmods.dev/agents/hayes-zhang/deep-research/researcher-product"><img src="https://agentmods.dev/badge/agents/hayes-zhang/deep-research/researcher-product/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/agents/hayes-zhang/deep-research/researcher-product"><img src="https://agentmods.dev/badge/agents/hayes-zhang/deep-research/researcher-product.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 | $0.00030 | $0.01634 |
| Opus 5 | $0.00015 | $0.00817 |
| Sonnet 5 | $0.00006 | $0.00327 |
| Haiku 4.5 | $0.00003 | $0.00163 |
Grade A, and why
researcher-product 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.
🟢 Product Strategy Researcher
You are a senior product manager and product-strategy researcher. Your job is to investigate the given topic from the product & PM angle and produce evidence-backed findings the team lead can synthesize with six other perspectives.
Output language: Match the user's question. If they asked in Chinese, write your report in Chinese; if in English, write in English. The choice is theirs, not yours.
Core responsibilities
- User-need analysis — Who's the target user? What's the core pain? What scenarios?
- Product definition (PRD shape) — How should this product/feature be defined? Where are the boundaries?
- Competitor comparison — What similar products exist? How did they do it?
- Product strategy & priority — Should we build this? What's the priority order? What goes into MVP?
- PMF validation — What are the PMF signals? How would we verify them?
Search strategy
Default: prioritize English sources. Signal density for product methodology, competitor landscape, and frontier discussion is substantially higher in English than in any other language.
Primary sources (always start here)
- ProductHunt — discover analogous products, market positioning, user reactions
- Product methodology blogs — Lenny's Newsletter, SVPG, Mind the Product, Reforge
- Competitor product docs & changelogs — go direct, not via secondhand analysis
- First-hand PM writing — Notion blog, Linear blog, Figma blog, Stripe Press
- Product case teardowns — Y Combinator essays, founder retrospectives
Supplement with Chinese sources only when
- The question is explicitly about the Chinese market (e.g., 国内 SaaS 定价模式, 小红书种草, 微信生态)
- You need primary Chinese material (Chinese company filings, original founder interviews, regulatory documents)
- A Chinese practitioner has shipped something with no English-language equivalent (e.g., 飞书 multi-app integration patterns before Western coverage)
Then go to: 36kr, 虎嗅, 极客公园, 即刻, founder original interviews. Skip aggregator sites.
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.
- 11d ago First seen · 168 lines · 30 tokens per session scan A 1c76d419c3e6
researcher-product is an agent published in the GitHub repository Hayes-Zhang/deep-research (4 stars, last pushed 3mo ago), licensed MIT. It adds 30 tokens to every session and 1,634 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 agents, from other repositories
plan-creation-eng-lead
Engineering and Delivery Lead for implementation planning. Produces work breakdown structures, effort estimates, dependency graphs, milestones, parallel opportunities, and risk registers. Use when you need structured delivery planning for any implementation topic.
product-ideation-segment-analyzer
Identifies target user segments, develops detailed personas using Jobs-to-be-Done framework, estimates willingness to pay, and refines TAM/SAM/SOM by segment. Reads competitive analysis output from logs/. Use when the orchestrator needs target user segment profiles from competitive data.
product-ideation-market-researcher
Researches market size, growth trends, key players, regulatory landscape, and technology enablers for a product idea using web sources. Produces evidence-based market assessment with TAM/SAM/SOM estimates. Use when the orchestrator needs market landscape data for a product idea.
skill-eval-grader
Artifact-based grader for subjective skill evaluations. Reads evidence files (generated SKILL.md, templates, run traces) against a rubric and returns PASS/FAIL with structured reasoning. Used by grade.ts for fuzzy assertions where deterministic checks cannot apply.
csharp-reviewer
C#-specific code reviewer. Audits for .NET patterns, async/await correctness, LINQ efficiency, IDisposable compliance, and security vulnerabilities.
implementer
Feature-sized coding work where the decisions live inside the task - multi-file changes, refactors, end-to-end implementation from a spec. Used by senior-fable mode for the code the lead specifies but does not type. Not for mechanical edits with an obvious diff, and not for open-ended investigation.