# Buy Vs Build Gain

> Use when summarizing Buy vs Build benchmark cases, behavior measurements, expected impact, release notes, or evidence that the ruleset reduces unnecessary code, dependencies, cost, or ownership risk.

- **Type:** Skill
- **Install:** `agentstack add skill-stdin-buy-vs-build-buy-vs-build-gain`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [stdin](https://agentstack.voostack.com/s/stdin)
- **Installs:** 0
- **Category:** [Developer Tools](https://agentstack.voostack.com/c/developer-tools)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [stdin](https://github.com/stdin)
- **Source:** https://github.com/stdin/buy-vs-build/tree/main/skills/buy-vs-build-gain

## Install

```sh
agentstack add skill-stdin-buy-vs-build-buy-vs-build-gain
```

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

## About

# Buy vs Build Gain

Summarize impact from benchmark data without overstating it. Distinguish measured local overhead from behavior benchmarks that still need agent runs.

## Workflow

1. Read `benchmarks/behavior-cases.json` for behavioral test cases.
2. Run `npm run benchmark` for local instruction and hook overhead.
3. If agent-run results exist, report LOC, files changed, dependencies added, decision-note quality, time, token/cost data, and safety regressions.
4. If only cases exist, call them a benchmark plan, not measured impact.

## Output

Use this shape:

```text
Measured
- : 

Behavior cases
- : expected rung ; baseline risk 

Limitations
- 
```

Never claim the ruleset reduces LOC, cost, or time until a baseline-vs-enabled agent run has actually been measured.

## Source & license

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

- **Author:** [stdin](https://github.com/stdin)
- **Source:** [stdin/buy-vs-build](https://github.com/stdin/buy-vs-build)
- **License:** MIT

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-stdin-buy-vs-build-buy-vs-build-gain
- Seller: https://agentstack.voostack.com/s/stdin
- 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%.