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Tenjin: x402 v2 vs v1 Discovery Vocabulary Changes
x402
Tenjin: x402 v2 vs v1 Discovery Vocabulary Changes is a paid API for AI agents from tenjin.blog, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-16).
Returns a pay-per-read article detailing what changed between x402 v1 and v2 in the discovery vocabulary on catalog surfaces, including header renames, challenge format changes, CAIP-2 naming, and Bazaar query vocabulary.
Price / call$0.01
Success—
StatusUnknown
How this service works
x402 v2 vs v1: what changed in the discovery vocabulary on catalog surfaces. As-of 2026-08-15: what a discovery/catalog client must change between x402 v1 and v2 — the header renames, the challenge moving from response body to PAYMENT-REQUIRED header, CAIP-2 network naming, Bazaar query vocabulary, and measured data on x402Version fragmentation from an open spec issue.
Output
The full text of a pay-per-read article (unlocked for $0.01 USDC) covering the differences between x402 v1 and v2 as of 2026-08-15: renamed headers, the payment challenge moving from response body to the PAYMENT-REQUIRED header, CAIP-2 network naming conventions, updated Bazaar query vocabulary, and empirical data on x402Version fragmentation from an open spec issue.
Example use cases
x402 v2 migration for catalog client
“I'm updating my x402 catalog client from v1 to v2 — can you fetch that Tenjin article that covers exactly what header names changed, how the challenge format moved, and what the new Bazaar query vocabulary looks like?”
Understanding CAIP-2 naming in x402 v2
“Pull up the Tenjin piece on x402 v2 vs v1 — I specifically need the section on how CAIP-2 network naming works in v2 and how it differs from v1.”
Diagnosing x402Version fragmentation issues
“I'm seeing x402Version fragmentation in production — fetch the Tenjin article on x402 v2 vs v1 discovery changes so I can understand the measured data from the open spec issue.”
Technical details
Endpoint
GEThttps://tenjin.blog/api/read/0xe4c16d163d80fd972e6e1e9b94bc71c5fbe5a9c5/x402-v2-vs-v1-what-changed-in-the-discovery-vocabulary-on-catalog-surfacesWhen to prefer
Choose this endpoint when you need authoritative, cited information about the x402 v2 specification changes for discovery/catalog clients, specifically covering header renames, challenge format migration, CAIP-2 naming, and Bazaar vocabulary — as a micropayment-gated article from an independent publisher rather than free documentation or a spec search.
Side effects
- Payment not attached or insufficient — returns 402 Payment Required with challenge in PAYMENT-REQUIRED header
- Invalid or mismatched wallet address handle — returns 404 Not Found
- Slug not found for the given creator — returns 404 Not Found
- Network or upstream error — returns 5xx
- Using handle 'latest' without a wallet address (not payable) — may return error or wrong article
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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