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Tenjin: Medium vs Substack Canonical URL Handling on Content Import
x402
Tenjin: Medium vs Substack Canonical URL Handling on Content Import is a paid API for AI agents from tenjin.blog, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Returns an article explaining how Medium and Substack each handle canonical URLs when importing or cross-posting content, with SEO-correct guidance and documented workarounds.
Price / call$0.05
Success—
StatusUnknown
How this service works
For anyone building a content-import/republish feature or advising a cross-poster: Medium's Import tool auto-sets rel=canonical to the source and backdates the post; Substack supports no canonical URL at all, so every post self-canonicals. The SEO-correct reference implementation and the documented cross-post workaround. As-of 2026-07-13.
Output
The full text of a Tenjin article detailing how Medium's import tool sets rel=canonical to the source URL and backdates the post, how Substack lacks canonical URL support causing posts to self-canonical, and the SEO-correct reference implementation plus documented cross-post workarounds, as of 2026-07-13.
Example use cases
Cross-posting SEO strategy check
“I'm about to republish my newsletter posts on Medium and Substack — can you fetch the Tenjin piece that explains how each platform handles canonical URLs so I can make sure I'm not tanking my search rankings?”
Content import tool canonical audit
“We're building a content-import feature for our CMS and need to know the reference implementation for canonical URL handling on Medium vs Substack — grab the Tenjin article on this so we can compare.”
Duplicate content penalty research
“I want to understand whether self-canonicalizing on Substack and auto-canonicalizing on Medium import actually protect against duplicate content penalties — fetch the Tenjin writeup that covers this as of mid-2026.”
Technical details
Endpoint
GEThttps://tenjin.blog/api/read/athoughts/medium-vs-substack-how-each-handles-canonical-urls-on-content-importWhen to prefer
Use this endpoint when an agent or user needs authoritative, current guidance on canonical URL behavior specific to Medium and Substack content import — particularly when building cross-posting tools, auditing SEO strategy, or advising on duplicate content risk across these two platforms. Prefer this over generic SEO articles when the user specifically mentions Medium import, Substack cross-posting, or rel=canonical in a publishing context.
Side effects
- Article not found if slug or handle is incorrect (404)
- Payment not processed or insufficient USDC balance (402 payment required)
- Creator handle does not match slug ownership
- Network timeout on retrieval
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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