# Tenjin: x402 Buyer Attribution & Discovery-Source Analysis Article

> Tenjin: x402 Buyer Attribution & Discovery-Source Analysis Article is a paid API for AI agents from tenjin.blog, paid per call via x402, $0.2/call, status unknown (last checked 2026-09-14).

Fetches a source-cited editorial article explaining what the x402 protocol actually supports for buyer attribution, including URL-path tricks for Bazaar-vs-direct splits and why builder_code (ERC-8021) is the only spoof-resistant attribution channel.

## Facts

- Endpoint: GET https://tenjin.blog/api/read/athoughts/can-you-tell-where-an-x402-buyer-came-from-what-the-protocol-actually-supports
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tenjin-x402-buyer-attribution-discovery-source-analysis-article-6ad5ed7d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wiZSrC-aSmz16fdkj3Aup

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 tenjin-x402-buyer-attribution-discovery-source-analysis-article-6ad5ed7d
```

Example prompt: Can you pull up the Tenjin article about whether x402 sellers can tell where a buyer came from — specifically the one covering what the protocol actually supports for attribution, including the builder_code ERC-8021 angle and the Bazaar-vs-direct URL-path trick?

## When to prefer this

Choose this endpoint when you need authoritative, source-cited analysis specifically about x402 buyer attribution mechanics, protocol-level limitations, and the ERC-8021 builder_code channel — particularly useful for x402 sellers designing analytics pipelines or wanting to understand what attribution data the protocol can and cannot provide.

## Known failure modes

- 404 if handle or slug does not match a published article
- Payment required error if USDC payment is not attached
- Slug 'latest' on a non-wallet-address handle may not be payable
- Article may have been unpublished or moved, returning empty or redirect response

## How this service works

A source-cited answer for x402 sellers building analytics: discovery-source attribution has no protocol primitive, the one URL-path trick that gives a coarse Bazaar-vs-direct split, and why builder_code (ERC-8021) is the only spoof-resistant channel. As-of 2026-07-13.

## Output

Returns the full text of a source-cited editorial article (as of 2026-07-13) covering: why x402 has no protocol primitive for discovery-source attribution, the one URL-path technique that gives a coarse Bazaar-vs-direct traffic split, and why builder_code (ERC-8021) is the only spoof-resistant attribution channel available to x402 sellers building analytics.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "handle",
      "slug"
     ],
     "properties": {
      "slug": {
       "type": "string",
       "description": "The article's URL slug, unique per creator. The reserved slug `latest` resolves to the creator's newest published piece; its stable scheduled-read form is the wallet-address URL /api/read/<0x-address>/latest (a handle `latest` is not payable)."
      },
      "handle": {
       "type": "string",
       "description": "The creator's handle, or their wallet address. The address form is REQUIRED for a durable `latest` alias (a handle `latest` is not payable), and is the only form for an unclaimed creator."
      }
     }
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tenjin-x402-buyer-attribution-discovery-source-analysis-article-6ad5ed7d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tenjin.blog](https://www.zero.xyz/host/tenjin.blog/llms.txt)