# Centra Content Publish Endpoint

> Centra Content Publish Endpoint is a free API for AI agents from centrahub.vercel.app, callable via x402, Free, status unknown (last checked 2026-10-18).

Publishes original text content to the Centra pay-per-access platform, making it available for monetized access by readers

## Facts

- Endpoint: POST https://centrahub.vercel.app/api/publish?utm_source=zero.xyz
- Price: Free
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/centra-content-publish-endpoint-a906f215
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zbmSbGy4VQ01-9z0F8MTj

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 centra-content-publish-endpoint-a906f215 -d '<json body>'
```

Example prompt: Publish my article titled 'The Future of Decentralized Finance' to Centra using my wallet 0xAbC123...456 — here's the full text: 'Decentralized finance, commonly known as DeFi, has transformed how we think about banking and financial services...'

## When to prefer this

Use this endpoint when a creator wants to publish original written content to the Centra platform and make it available for x402-based pay-per-access monetization. Prefer this over the AI-generate-and-publish sibling endpoint when the user already has their own content ready to submit directly.

## Known failure modes

- Content text shorter than 100 characters returns a validation error
- Missing required fields (title, fullContent, creatorWallet) causes a 400 bad request
- Invalid or malformed Ethereum wallet address may be rejected
- Server errors from Vercel hosting may return 500 responses
- Duplicate or rate-limited submissions may fail silently or return an error

## How this service works

Create and publish your content for free

## Output

Returns a JSON object with success status and a data object containing the newly created content's unique ID, its access price, title, a short preview snippet, the creation timestamp, and the creator's wallet address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "title",
  "fullContent",
  "creatorWallet"
 ],
 "properties": {
  "title": {
   "type": "string",
   "description": "Content title"
  },
  "fullContent": {
   "type": "string",
   "description": "Full content text (minimum 100 characters)"
  },
  "creatorWallet": {
   "type": "string",
   "description": "Ethereum wallet address of content creator"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "properties": {
    "id": {
     "type": "string"
    },
    "price": {
     "type": "number"
    },
    "title": {
     "type": "string"
    },
    "preview": {
     "type": "string"
    },
    "createdAt": {
     "type": "string"
    },
    "creatorWallet": {
     "type": "string"
    }
   }
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/centra-content-publish-endpoint-a906f215/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from centrahub.vercel.app](https://www.zero.xyz/host/centrahub.vercel.app/llms.txt)