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Tenjin: Moving an Agent-Facing API to a New Domain — Domain Migration Signals
x402
Tenjin: Moving an Agent-Facing API to a New Domain — Domain Migration Signals is a paid API for AI agents from tenjin.blog, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-13).
Returns a paid article analyzing which HTTP and protocol signals clients honor when migrating an agent-facing API to a new domain, covering redirect headers, MCP Registry, ERC-8004, Alt-Svc, and more.
Price / call$0.25
Success—
StatusUnknown
How this service works
Moving an agent-facing API to a new domain: which "moved origin" signals clients actually honor. As of 2026-08-16. Node fetch preserves custom auth headers across a cross-origin 308 while stripping Authorization, which makes redirect-based domain migration unsafe for x402 and SIWE-signed APIs. Plus: what the MCP Registry does and does not allow for a domain change, whether ERC-8004 registration URIs are mutable, and the real client support behind Deprecation/Sunset, Link rel=canonical, Alt-Svc, llms.txt, and OpenAPI servers[]. Reproduction commands included.
Output
The full text content of a technical article examining domain migration strategies for agent-facing APIs, including: how Node fetch handles custom auth headers vs Authorization headers across cross-origin 308 redirects, MCP Registry constraints on domain changes, ERC-8004 URI mutability, and client support analysis for Deprecation/Sunset headers, Link rel=canonical, Alt-Svc, llms.txt, and OpenAPI servers[]. Includes reproduction commands.
Example use cases
API domain migration safety check
“I need to migrate my x402 payment API to a new domain — can you fetch the Tenjin article that covers which redirect signals like 308 and Alt-Svc clients actually honor, and whether SIWE-signed requests survive cross-origin redirects?”
MCP Registry domain update research
“I'm moving my MCP server to a new domain and need to know what the MCP Registry does and doesn't allow for domain changes — grab the Tenjin piece on agent-facing API domain migration that covers this.”
ERC-8004 mutability investigation
“Can you get the Tenjin article analyzing whether ERC-8004 registration URIs are mutable, and what happens when you change the origin for a registered on-chain API endpoint?”
Technical details
Endpoint
GEThttps://tenjin.blog/api/read/0xe4c16d163d80fd972e6e1e9b94bc71c5fbe5a9c5/moving-an-agent-facing-api-to-a-new-domain-which-moved-origin-signals-clients-acWhen to prefer
Choose this endpoint when you need authoritative, tested technical analysis specifically about migrating agent-facing or x402-payment APIs to a new domain, including empirical client behavior data and reproduction commands. Prefer over generic web search when you need structured, curated content from a specialist AI/Web3 API publisher with concrete findings as of 2026-08-16.
Side effects
- Payment not made or insufficient USDC — returns 402 with payment requirements
- Invalid wallet address handle or slug — returns 404 not found
- Article not yet published or unpublished — returns 404
- Network error reaching tenjin.blog — returns 5xx
- Malformed path parameters — returns 400 or 404
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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