{"uid":"cap_wiZSrC-aSmz16fdkj3Aup","slug":"tenjin-x402-buyer-attribution-discovery-source-analysis-article-6ad5ed7d","name":"Tenjin: x402 Buyer Attribution & Discovery-Source Analysis Article","description":"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.","url":"https://tenjin.blog/api/read/athoughts/can-you-tell-where-an-x402-buyer-came-from-what-the-protocol-actually-supports","method":"GET","headers":{},"bodySchema":{"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"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.2","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.2/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.2","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.2","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_XgOUbMSuAzuxTd_hJVWvl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.2","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"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?","exampleUseCases":[{"title":"x402 attribution primitives research","prompt":"I'm building analytics for my x402 paywall and I want to understand what the protocol actually supports for tracking where buyers come from — can you fetch the Tenjin piece on x402 buyer attribution that covers builder_code and the Bazaar-vs-direct split?"},{"title":"ERC-8021 builder code deep dive","prompt":"Can you get me the Tenjin article explaining why builder_code under ERC-8021 is the only spoof-resistant attribution channel for x402 sellers, so I can decide whether to implement it?"},{"title":"x402 seller analytics setup guide","prompt":"I'm setting up seller analytics for my x402 content and need to understand the URL-path trick for splitting Bazaar versus direct traffic — pull up that Tenjin post from July 2026 that explains what the protocol actually supports for discovery-source attribution."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:48:04.727Z","isFirstParty":false}