---
skill_id: gf-po-multi-region-probe-cards
evaluation: free
quality: agent-decision-grade
functional: true
price_usd_full: 8.99
price_label: $8.99 / unlock
kind: service
category: Agent Ops
challenge: https://lvlltd.com/api/pay?skill=gf-po-multi-region-probe-cards
outline: https://lvlltd.com/skills/gf-po-multi-region-probe-cards/outline.json
runtime_after_unlock: src/index.js createSkill
standards: x402, ERC-7857
completion_pass: functional-v1
---

# Free sample — Multi-Region Probe Cards

**Skill ID:** `gf-po-multi-region-probe-cards`  
**Unlock:** $8.99 / unlock USDC on Base via x402  
**What you get after pay:** runnable sealed pack (`createSkill().run`) + workbook + templates  

## Summary

Region-aware synthetic probe cards that pin health, latency, and unlock-path continuity across edges before traffic notices the gap.

Production reliability for multi-region agent and marketplace stacks. Each probe card names regions, paths, pass/fail SLIs, and page-out owners so “green somewhere” never hides a dark edge. Free outline first; sealed pack unlocks via x402 Base USDC. Operational guidance only—not legal advice; no uptime guarantees.

## When to use

- Your primary region looks healthy while a secondary edge returns elevated 5xx or empty unlock pages for a subset of users.
- Agent tool endpoints and payment webhooks are multi-homed and you lack a single card operators open during regional brownouts.
- You want synthetic continuity checks that prove home, catalog, and unlock stubs from at least three geographic vantage points.

## Decision-grade outline (free)

1. Inventory critical user and agent paths (home, listing, unlock stub, health JSON) and assign one probe identity per path per region.
2. Define pass/fail SLIs per card: status code, body hash or required string, p95 latency ceiling, and consecutive-fail abort count.
3. Schedule probe cadence and vantage points (US-East, EU-West, APAC) with quiet hours and page-out channels for multi-region fail.
4. Wire alert routing: single-region degrade vs multi-region outage severity, mute windows during planned freezes, and owner pages.
5. Publish a weekly probe drift review: flappy regions, false positives, path coverage gaps, and cards that never failed yet still matter.

## Capabilities

- Per-path multi-region probe card templates with explicit SLI fields and owners
- Single-region vs multi-region severity ladder tied to synthetic fail counts
- Vantage-point schedule planner for US, EU, and APAC continuity checks
- Probe drift review sheet that captures flappy edges and missing path coverage
- Mute and freeze-window notes so planned deploys do not thrash pages

## Artifacts after unlock

- `multi-region-probe-cards.md`
- `probe-sli-matrix.yaml`
- `regional-alert-routing.md`
- `probe-drift-review-sheet.md`

## Detailed description

Regional silence is the enemy of production reliability. Dashboards centered on one origin will report green while a distant edge serves stale HTML, broken asset hosts, or an unlock route that never reaches the payment worker. Multi-Region Probe Cards turn vague “we should monitor more places” talk into sealed, operator-ready cards. Each card binds a concrete path—home, product listing, unlock stub, health JSON, or agent tool health—to named vantage points and numeric pass/fail SLIs: expected status, required body markers or content hashes, p95 latency ceilings, and how many consecutive fails open a page. Severity is dual-track: one region degraded is not the same page as two regions failing the unlock path at once. Cadence and quiet-hour rules keep night freezes from becoming noise, while planned-deploy mute windows prevent self-inflicted pages during freezes. The weekly drift review forces honesty about flappy probes, paths nobody watches, and regions that only fail when real users appear. A free outline ships on the listing; the sealed pack unlocks via x402 on Base with USDC. This is operational guidance for reliability practice—not legal advice, not a monitoring SaaS subscription, and it makes no uptime, traffic, or revenue guarantees. Use it so every region that can serve your marketplace has a card an on-call human can open without archaeology.

## 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-Region Probe Cards for my catalog",
  context: { skill_id: "gf-po-multi-region-probe-cards" },
  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-po-multi-region-probe-cards` → HTTP 402  
3. Transfer `maxAmountRequired` USDC to `payTo` on Base  
4. `POST /api/pay` with `X-PAYMENT: {"txHash":"0x…","skill":"gf-po-multi-region-probe-cards"}`  
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-po-multi-region-probe-cards/` is teaser-only. Full `src/` is paywalled under locked sealed delivery.*