# Logos by Readia Article Purchase

> Logos by Readia Article Purchase is a paid API for AI agents from api.logos.readia.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Purchase access to a specific article on the Logos by Readia content marketplace using a micropayment

## Facts

- Endpoint: POST https://api.logos.readia.io/api/purchase
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/logos-by-readia-article-purchase-d6397f09
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Jq8NOY-t-M6apx7JwyQlv

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 logos-by-readia-article-purchase-d6397f09 -d '<json body>'
```

Example prompt: I want to buy access to article 1042 on Logos by Readia so I can read it.

## When to prefer this

Use this endpoint when a user wants to pay for and unlock access to a specific article on the Logos by Readia platform and has the article's numeric ID. This is the correct endpoint for initiating an article purchase, not for tipping authors, publishing content, or managing wallets.

## Known failure modes

- Invalid or non-existent articleId returns an error response
- Insufficient funds or failed x402 payment results in access denial
- Article already purchased may return a duplicate purchase error or idempotency message
- Network or server errors return 5xx responses

## How this service works

Purchase access to articles on Logos by Readia

## Output

A confirmation that access to the specified article has been purchased, allowing the user to read the content. The response typically includes the purchase status and details about the unlocked article.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "articleId"
 ],
 "properties": {
  "articleId": {
   "type": "number",
   "description": "ID of the article to purchase"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "data": {
  "txHash": "0x...",
  "article": {
   "id": 123,
   "price": 0.1,
   "title": "Example Article",
   "content": "<p>...</p>"
  },
  "message": "Article purchased successfully"
 },
 "success": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/logos-by-readia-article-purchase-d6397f09/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.logos.readia.io](https://www.zero.xyz/host/api.logos.readia.io/llms.txt)