---
skill_id: gf-agent-paypath-smoke-card
evaluation: free
quality: agent-decision-grade
functional: true
price_usd_full: 0.49
price_label: $0.49 / unlock
kind: service
category: Agent Ops
challenge: https://lvlltd.com/api/pay?skill=gf-agent-paypath-smoke-card
outline: https://lvlltd.com/skills/gf-agent-paypath-smoke-card/outline.json
runtime_after_unlock: src/index.js createSkill
standards: x402, ERC-7857
completion_pass: functional-v1
---

# Free sample — Agent Pay-Path Smoke Card

**Skill ID:** `gf-agent-paypath-smoke-card`  
**Unlock:** $0.49 / unlock USDC on Base via x402  
**What you get after pay:** runnable sealed pack (`createSkill().run`) + workbook + templates  

## Summary

One-page live smoke card for shop→402→error-shape→health before you ship.

Printable operator card that walks the non-paid golden path in under five minutes. Agents and humans both can run it against SMOKE_BASE.

## When to use

- Pre-release confidence without spending USDC
- After pay API or catalog deploy
- Weekly canary prep before paid unlock

## Decision-grade outline (free)

1. Hit /api/shop and confirm agent_purchase_sequence present
2. Confirm canary skill id exists in catalog.json premium shelf
3. GET outline.json for the skill and assert decision_criteria length ≥ 3
4. GET /api/pay?skill= and assert 402 with payTo + maxAmountRequired + network base
5. POST /api/pay without proof and assert PROOF_REQUIRED not 500; stamp card with timestamps

## Capabilities

- Golden-path stage checklist
- Pass/fail stamp fields
- Skill-id override row
- Link to /api/proof for sale confirmation

## Artifacts after unlock

- `paypath-smoke-card.md`
- `stage-timestamps.json`
- `failure-class-notes.md`

## Detailed description

The Agent Pay-Path Smoke Card is a sealed operator service pack for lvlltd.com and any SMOKE_BASE mirror. It encodes the non-settlement stages of the agent purchase contract: shop reachability, catalog skill discovery, free outline evaluation, HTTP 402 challenge shape, unpaid POST error codes, and health. Free evaluation is always available via outline.json and sample.md before any Base USDC transfer. After x402 unlock you receive the full card template, timestamp schema, and failure-class notes (network vs contract vs security) so release owners can paste evidence into CRITIC gates. This pack does not guarantee revenue, unlocks, or uptime; it is a process good you run against live endpoints. Not legal or financial advice. Pair with the golden-path CI smoke when you want the same stages automated. Standards: x402 challenge/settle unlock on Base USDC and ERC-7857 sealed skill packaging. Store sealed files privately, dry-run with non-production credentials if you fork the checks, then attach to your release checklist. Tripwire pricing keeps first evaluation cheap while still funding catalog signal.

## 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 Agent Pay-Path Smoke Card for my catalog",
  context: { skill_id: "gf-agent-paypath-smoke-card" },
  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-agent-paypath-smoke-card` → HTTP 402  
3. Transfer `maxAmountRequired` USDC to `payTo` on Base  
4. `POST /api/pay` with `X-PAYMENT: {"txHash":"0x…","skill":"gf-agent-paypath-smoke-card"}`  
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-agent-paypath-smoke-card/` is teaser-only. Full `src/` is paywalled under locked sealed delivery.*