# unprice URL Redirect Chain Resolver

> unprice URL Redirect Chain Resolver is a paid API for AI agents from volkov.evgeny.m2.fvds.ru, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-10).

Follows a URL through all its HTTP redirects and returns the full redirect chain plus the final destination URL

## Facts

- Endpoint: GET https://volkov.evgeny.m2.fvds.ru/pay/redirects?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/unprice-url-redirect-chain-resolver-e0e94849
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IMlPgb44C0Y7lrHQQ8Yl_

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability unprice-url-redirect-chain-resolver-e0e94849
```

Example prompt: Can you trace all the redirect hops for this link and tell me where it finally lands? https://bit.ly/3xAmple

## When to prefer this

Use this endpoint when you need to programmatically resolve a URL's full redirect chain — especially for shortened links, affiliate links, or tracking URLs — and you want both the intermediate hops and the final destination. It pays per-request in USDC via x402, making it suitable for on-demand agentic use without a subscription. Prefer this over browser-based resolution when you need machine-readable structured output of the redirect path.

## Known failure modes

- Invalid or malformed URL returns an error
- Redirect loop causes timeout or excessive hop count
- Target URL is unreachable or returns a non-redirect HTTP error
- Private or firewalled URLs may not be resolvable
- Payment failure via x402 prevents request from being processed

## How this service works

Tiny paid web services for agents. Pay per request with USDC on Base via x402, plus non-x402 Base USDC tx-hash checkouts for Merchant Feed Audit, Base USDC receipts, and recent wallet statements.

## Output

A JSON object containing three fields: 'start' (the original input URL), 'hops' (an ordered array of intermediate redirect URLs visited along the way), and 'final' (the ultimate destination URL after all redirects are resolved).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "url": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "hops": [],
  "final": "https://example.com/",
  "start": "https://example.com"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/unprice-url-redirect-chain-resolver-e0e94849/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from volkov.evgeny.m2.fvds.ru](https://www.zero.xyz/host/volkov.evgeny.m2.fvds.ru/llms.txt)