# ATK Magazine – SIGNAL Article: ResearchAgent x402 on XRPL Testnet

> ATK Magazine – SIGNAL Article: ResearchAgent x402 on XRPL Testnet is a paid API for AI agents from atk-bazaar-linec-production.up.railway.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-23).

Returns a JSON excerpt/placeholder for a single sample ATK Magazine SIGNAL article about ResearchAgent paying writers per article using x402 v2 on XRPL Testnet

## Facts

- Endpoint: GET https://atk-bazaar-linec-production.up.railway.app/bazaar/atk-magazine/articles/atk-signal-2026-10-researchagent-x402?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/atk-magazine-signal-article-researchagent-x402-on-xrpl-testnet-580c4b52
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bNaV0a-ZTe0kSCDlorJuY

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability atk-magazine-signal-article-researchagent-x402-on-xrpl-testnet-580c4b52
```

Example prompt: Fetch me the ATK Magazine SIGNAL article about ResearchAgent paying writers with x402 v2 on XRPL Testnet — it costs $0.20 USDC and I want to see the excerpt and article details.

## When to prefer this

Choose this endpoint when you specifically want to retrieve this individual ATK Magazine SIGNAL article about ResearchAgent and x402 v2 on XRPL Testnet, or when demonstrating/testing x402 micropayment-gated article access on the ATK bazaar platform. Not suitable for searching across multiple articles or accessing different ATK Magazine content.

## Known failure modes

- Payment not included or insufficient — endpoint returns 402 Payment Required
- Article ID not found — returns 404 or empty response
- Railway deployment unavailable — returns 503 or timeout
- Malformed path parameter — returns 400 or unexpected response
- Content flagged as sample/test — response includes sampleContent:true, indicating this is not production editorial content

## How this service works

[SAMPLE / TEST CONTENT] [$0.20 per article (USDC on Base mainnet; SAMPLE / TEST CONTENT, not a published article)] ATK Magazine EXAMPLE (draft, not published): [EXAMPLE] SIGNAL: ResearchAgent pays writers per article with x402 v2 on XRPL Testnet. Returns a JSON excerpt/placeholder of one example article.

## Output

A JSON object containing the article's price, title, status (draft/example), a short excerpt, the article ID, and a flag indicating sample/test content. This is not a fully published article but a representative placeholder demonstrating the x402-gated article format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "pathParams": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "price": "$0.20 per article (USDC on Base mainnet; SAMPLE / TEST CONTENT, not a published article)",
  "title": "[EXAMPLE] SIGNAL: ResearchAgent pays writers per article with x402 v2 on XRPL Testnet",
  "status": "draft/example",
  "excerpt": "…",
  "articleId": "atk-signal-2026-10-researchagent-x402",
  "sampleContent": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/atk-magazine-signal-article-researchagent-x402-on-xrpl-testnet-580c4b52/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from atk-bazaar-linec-production.up.railway.app](https://www.zero.xyz/host/atk-bazaar-linec-production.up.railway.app/llms.txt)