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AgentShelf URL Expander
x402
AgentShelf URL Expander is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Follows up to 5 redirects on a given URL (SSRF-safe, HEAD/GET only) and returns the final resolved URL, HTTP status, and the full redirect chain.
Price / call$0.003
Success—
StatusUnknown
How this service works
Call when an agent needs to follow redirects (max 5, SSRF-safe HEAD/GET) and receive final_url, status, and redirect_chain. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/url-expand first.
Output
Returns the resolved final_url after following up to 5 redirects, the HTTP status code at the final destination, and a redirect_chain array listing every intermediate URL visited along the way.
Example use cases
Resolving a shortened tracking link
“I got this link in an email: https://t.co/abc123xyz — can you trace where it actually redirects to and show me each step of the redirect chain?”
Verifying affiliate redirect destination
“Before I click this affiliate link https://go.partnerstack.com/xyz, can you resolve all its redirects and tell me the final URL it lands on?”
Auditing suspicious link before sharing
“Someone sent me this URL https://cutt.ly/Rk9xPwM and I want to know where it actually goes — can you follow all the hops and give me the final destination and status?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/url-expand?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to safely resolve a URL through its full redirect chain and get the canonical final destination — especially for shortened links, tracking URLs, or affiliate redirects. It is SSRF-safe, making it appropriate for automated agent pipelines where untrusted URLs may be submitted. Prefer the free POST /v1/sandbox/url-expand first if available; use this paid endpoint when the sandbox is unavailable or when you need production reliability.
Side effects
- URL that triggers more than 5 redirects will be cut off at the limit
- SSRF-blocked addresses (private IPs, localhost) will be rejected for security reasons
- Malformed or too-short URLs (under 8 chars) will fail input validation
- Network timeouts or unreachable hosts will return an error status
- URLs returning non-redirect 4xx/5xx responses at any hop will surface that status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public http(s) URL to fetch. Private, localhost, link-local, and metadata hosts are rejected. |
Tags
x402
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