WithZero URL Shortener

x402

WithZero URL Shortener is a paid API for AI agents from agents.withzero.xyz, paid per call via x402 or MPP, price unknown, status unknown (last checked 2026-10-31).

Shortens a long URL into a compact 4-character base62 code hosted at 0url.to/<code>

Price / call—

Seller volume →—

Success—

StatusUnknown

How this service works

Create a short link that redirects to a long URL for one year.

Output

Returns a JSON object with the shortened URL (e.g. https://0url.to/Ab3X), the 4-character base62 code assigned to the URL, and an ISO 8601 expiration timestamp indicating when the short link will stop resolving.

Example use cases

Short link for social media post

“I want to share this article on Twitter but the URL is way too long — can you shorten https://www.myblog.com/2024/articles/how-to-build-an-ai-agent-from-scratch-using-python into something compact?”

Compact URL for email campaign

“I'm sending out a marketing email and need a shorter version of this landing page link: https://store.myshop.com/summer-sale/products?category=outdoor&discount=20&ref=newsletter2024 — can you make it shorter?”

Shareable link for team collaboration

“Can you create a short link for https://docs.google.com/document/d/1aBcDeFgHiJkLmNoPqRsTuVwXyZ1234567890/edit?usp=sharing so I can quickly paste it into our Slack channel?”

Technical details

Endpoint

POSThttps://agents.withzero.xyz/api/v1/urlshortener/links?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a quick, pay-per-use URL shortener with no account setup or API keys required, especially within an autonomous agent workflow using x402 micropayments. It produces links at the 0url.to domain with a 4-character code. Prefer it when your agent needs to create shareable short links on demand without integrating a dedicated URL shortening service like Bitly or TinyURL.

Side effects

Invalid or malformed URL input — returns an error if the provided URL is not a valid web address
Missing required 'url' field — request will be rejected
Payment failure — though listed at $0 USDC, the x402 payment flow may fail if the agent's wallet is misconfigured
Expired link — the returned short URL will stop resolving after the expiration timestamp

Input

Schema · Request body

Field	Type	Description
urlrequired	string	The long URL to shorten.

Output

Schema · Response

Field	Type	Description
coderequired	string	Four-character base62 code assigned to the URL.
expiresrequired	string	ISO timestamp at which the code stops resolving.
shortUrlrequired	string	Short URL of the form 0url.to/<code>.

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