# Pmf

> Alias for /ground — the demand-evidence gate on the build decision. Binds every product bet to real demand evidence (revealed-&-costly > specific-stated > vanity proxy) and REFUSES to license a build on anything weaker than specific stated demand: defaults to UNKNOWN/PUSH and ships the cheapest test that would settle it. Stops craft drifting into impressive-but-unwanted. Modes: <bet|product> (ext…

- **Type:** Skill
- **Install:** `agentstack add skill-yiyaw-lab-agent-armor-pmf`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [yiyaw-lab](https://agentstack.voostack.com/s/yiyaw-lab)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [yiyaw-lab](https://github.com/yiyaw-lab)
- **Source:** https://github.com/yiyaw-lab/agent-armor/tree/main/pmf
- **Website:** https://yiya.dev

## Install

```sh
agentstack add skill-yiyaw-lab-agent-armor-pmf
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

Alias for **/ground**. Follow the **ground** skill (`ground/SKILL.md`) exactly — same modes (`` | `audit` | `apply`), same evidence-hierarchy refusal criterion (PULL ≥ Tier-1, vanity caps at UNKNOWN, cite-or-declare-UNKNOWN), same falsification + founder-bias guard, same gates-and-grades enforcement (verdict gates ship via /redline; each bet emits a falsifiable demand-prediction to your prediction ledger), same propose-on-approval + PUSH-caught/prediction-hit-rate metric.

Why two names: **ground** is the self-documenting verb — keep the product grounded in real demand, do not float on proxy and conviction (a cold reader infers the method). **pmf** is the recognizable term for the goal it serves (product-market fit). Use whichever reads truer; they run the identical procedure.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [yiyaw-lab](https://github.com/yiyaw-lab)
- **Source:** [yiyaw-lab/agent-armor](https://github.com/yiyaw-lab/agent-armor)
- **License:** MIT
- **Homepage:** https://yiya.dev

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-yiyaw-lab-agent-armor-pmf
- Seller: https://agentstack.voostack.com/s/yiyaw-lab
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.