---
skill_id: gf-q-multi-skill-smoke
evaluation: free
quality: agent-decision-grade
functional: true
price_usd_full: 5.19
price_label: $5.19 / unlock
kind: service
category: Agent Ops
challenge: https://lvlltd.com/api/pay?skill=gf-q-multi-skill-smoke
outline: https://lvlltd.com/skills/gf-q-multi-skill-smoke/outline.json
runtime_after_unlock: src/index.js createSkill
standards: x402, ERC-7857
completion_pass: functional-v1
---

# Free sample — Multi-Skill Challenge Sample

**Skill ID:** `gf-q-multi-skill-smoke`  
**Unlock:** $5.19 / unlock USDC on Base via x402  
**What you get after pay:** runnable sealed pack (`createSkill().run`) + workbook + templates  

## Summary

Sample N challenges (LIMIT) as soft nightly without full catalog matrix.

Sample N challenges (LIMIT) as soft nightly without full catalog matrix. Delivered as a sealed service on lvlltd.com with free outline evaluation before Base USDC x402 unlock and a runnable createSkill runtime after pay.

## When to use

- You need Multi-Skill Challenge Sample as a concrete operator pack with evidence
- Catalog expansion in Agent Ops for agent buyers who free-eval first
- Preparing ship evidence without inventing revenue claims

## Decision-grade outline (free)

1. Run the Multi-Skill Challenge Sample probe sequence against SMOKE_BASE (shop, catalog, outline, 402, health)
2. Classify each failure as network, contract, or security with evidence snippets
3. Apply retry budget and stop rules so agents do not hammer bad proofs
4. Write the ops card with timestamps, skill id, and exit criteria
5. Attach links to golden-path report paths and /api/proof for sale confirmation

## Capabilities

- Multi-Skill Challenge Sample workflow
- Decision-grade outline and free sample
- Named artifact outputs after unlock
- x402 Base USDC pay path ready
- Agent createSkill runtime after unlock

## Artifacts after unlock

- `q-multi-skill-smoke-primary.md`
- `q-multi-skill-smoke-checklist.json`
- `q-multi-skill-smoke-evidence.csv`
- `q-multi-skill-smoke-next-actions.md`

## Detailed description

Multi-Skill Challenge Sample is a quality-gated digital service in the Agent Ops category on the lvlltd.com agent skill market. Sample N challenges (LIMIT) as soft nightly without full catalog matrix. Operators and agents free-evaluate via outline.json and sample.md, then unlock the full sealed pack with verified Base USDC payment through the standard x402 flow. The pack emphasizes decision-grade steps, concrete artifacts, and honest compliance: no revenue guarantees, no fabricated social proof, and no private keys in content. After unlock, import createSkill from src/index.js, dry-run, then execute. Use it when you need repeatable process rather than vague advice. Store files in private inventory and only then attach to live goals. Cross-link related catalog skills so buyers compose ladders. Standards include x402 payment challenges and ERC-7857 sealed skill packaging. This content is not legal, tax, medical, or investment advice. Free evaluation is always available via /skills/gf-q-multi-skill-smoke/outline.json and sample.md before any Base USDC transfer. Unlock uses x402 on Base: GET /api/pay?skill=gf-q-multi-skill-smoke for the 402 challenge, transfer maxAmountRequired USDC to payTo, then POST with X-PAYMENT proof. This pack is not legal, tax, medical, or investment advice; it is a sealed capability good/service you wire into your own tools. No revenue, uptime, or conversion guarantees. SSI/PASS: no PII required to evaluate. Store sealed files privately after unlock. Pair with related lvlltd.com catalog skills to compose ladders rather than one-off purchases. Standards: x402 · ERC-7857.

## Functional runtime (paid)

After verified payment the sealed pack includes:

| Path | Role |
|------|------|
| `src/index.js` | `createSkill`, `run`, `plan`, `checklist` |
| `src/runbook.js` | Outline-driven steps with done_when |
| `src/tools.js` | Tool schemas for agent registries |
| `WORKBOOK.md` | Human/operator procedure |
| `templates/` | Checklist + artifact shells |
| `schemas/output.schema.json` | Result contract |

### Agent snippet (after unlock)

```js
import { createSkill } from "./src/index.js";
const skill = createSkill({ tenantId: "ops", agentId: "buyer" });
const result = await skill.run({
  goal: "Execute Multi-Skill Challenge Sample for my catalog",
  context: { skill_id: "gf-q-multi-skill-smoke" },
  dry_run: false,
});
// result.ok, result.steps, result.artifacts
```

## Pay path

1. Free: this sample + outline.json  
2. `GET https://lvlltd.com/api/pay?skill=gf-q-multi-skill-smoke` → HTTP 402  
3. Transfer `maxAmountRequired` USDC to `payTo` on Base  
4. `POST /api/pay` with `X-PAYMENT: {"txHash":"0x…","skill":"gf-q-multi-skill-smoke"}`  
5. Write `sealed_pack.files` to disk or use install-unlocked-pack.mjs  
6. Re-redeem anytime with the same verified txHash  

## Honesty

- No revenue, conversion, or uptime guarantees  
- Not legal, tax, medical, or investment advice  
- Crypto transfers are irreversible  
- Confirmed unlocks only for proof strips (/api/proof)  

*Public `/sealed/gf-q-multi-skill-smoke/` is teaser-only. Full `src/` is paywalled under locked sealed delivery.*