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URL Resolver (RFC 3986)
x402
URL Resolver (RFC 3986) is a paid API for AI agents from url-text-tools.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Resolves a relative URL reference against an absolute base URL per RFC 3986 section 5, handling ../, ./, //host, query strings, and fragments.
Price / call$0.02
Success—
StatusUnknown
How this service works
Resolve a relative link against a base URL per RFC 3986 section 5, handling ../, ./, //host, ?query and #frag.
Output
Returns the resolved absolute URL along with the reference kind (e.g. relative, absolute, protocol-relative), a human-readable summary, any reasons or warnings, a verdict on the resolution, and an optional disclaimer. The resolved field contains the final absolute URL.
Example use cases
Fixing scraped relative links
“I scraped this page https://docs.python.org/3/library/ and found a relative link ../glossary.html — can you resolve it to a full absolute URL for me?”
Building absolute URLs for a sitemap
“I have the base URL https://www.mystore.com/blog/2024/april/ and a relative reference of ../../sale?ref=top — what's the full resolved URL?”
Debugging a broken relative link
“My page at https://cdn.mysite.com/assets/css/themes/ has a relative path of //fonts.example.com/roboto.css — resolve that against the base URL so I know exactly where it points.”
Technical details
Endpoint
GEThttps://url-text-tools.x402tookit.com/url-resolve?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need standards-compliant RFC 3986 URL resolution — especially when handling ../ and ./ path traversal, protocol-relative //host references, or query/fragment combinations that simpler string concatenation would mishandle. Prefer this over manual string manipulation when correctness against the spec matters, such as in web scraping, sitemap generation, or link validation pipelines.
Side effects
- Missing or malformed base URL returns an error
- Relative reference that is already absolute may pass through with a note
- Non-HTTP/HTTPS schemes may produce unexpected results
- Malformed input URLs may return a degraded result with warnings in the reasons array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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