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 stanislavnianko/product-discovery-claude-skills --skill mvp-definitiongit clone --depth 1 https://github.com/stanislavnianko/product-discovery-claude-skillsWrote 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/stanislavnianko/product-discovery-claude-skills/mvp-definition)<a href="https://agentmods.dev/skills/stanislavnianko/product-discovery-claude-skills/mvp-definition"><img src="https://agentmods.dev/badge/skills/stanislavnianko/product-discovery-claude-skills/mvp-definition/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/stanislavnianko/product-discovery-claude-skills/mvp-definition"><img src="https://agentmods.dev/badge/skills/stanislavnianko/product-discovery-claude-skills/mvp-definition.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 | $0.00073 | $0.01168 |
| Opus 5 | $0.00036 | $0.00584 |
| Sonnet 5 | $0.00015 | $0.00234 |
| Haiku 4.5 | $0.00007 | $0.00117 |
Grade A, and why
mvp-definition 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.
How it starts
The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MVP Definition
Part of the discovery-phase skill pack ·
scopinggroup · readsdiscovery-context.md(runprofile-builderfirst if missing).
A clarifier skill — runs when "what is the MVP, exactly?" comes up. Distinguishes three levels: PoC (proves a tech assumption), MVP (proves a market assumption), v1 (delivers value at scale). Outputs an explicit comparison so the client and agency align before scope hardens.
When to run this skill
- Client and agency disagree on what "MVP" means
- The team is conflating "stripped-down product" with "learning experiment"
- After
feature-scopingto validate the scope is actually MVP-shaped - During pre-sale conversations to align expectations
Step 1 — Read context
Read discovery-context.md and risk-assumption-map.md (top-3 assumptions are what the MVP must validate). Optionally read scope-doc.md (reinforces MVP framing).
If discovery-context.md is missing, ask the BA inline: "client stage — pre-launch / early traction / scaling / mature?" — tag the output [ASSUMED]. If risk-assumption-map.md is missing, ask: "name 1–3 assumptions to retire in one sentence each" — or proceed tagged [NO-RISK-FRAME] (MVP becomes feature-driven, not learning-driven). Never block; recommend profile-builder / risk-assumption-mapping for high-stakes work.
Step 2 — Three-level table
Build the comparison.
| Level | Goal | Audience | Success criterion | Tear-down? | Lifespan |
|---|---|---|---|---|---|
| PoC | Retire 1-3 specific assumptions | Internal + maybe 5 friendlies | Assumption resolved (yes/no) | Yes, throwaway | Days-weeks |
| MVP | Validate market hypothesis | Real users (limited segment) | Leading metric crosses pre-committed threshold | Maybe — could harden if MVP wins | Weeks-months |
| v1 | Deliver value at scale | Full target market | Lagging business metric (revenue, retention, NPS) | No | Open-ended |
Fill the rows specific to this engagement.
Step 3 — State which level applies
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.
- 12d ago First seen · 97 lines · 73 tokens per session scan A 48abf98e82a9
mvp-definition is a skill published in the GitHub repository stanislavnianko/product-discovery-claude-skills (1 stars, last pushed 4mo ago), licensed MIT. It adds 73 tokens to every session and 1,168 once invoked, about $0.0004 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.
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