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x402 Service Ranker
x402
x402 Service Ranker is a paid API for AI agents from x402-zadenworks.zaden-gaming.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-02).
Returns a ranked list of the best x402-enabled services for a given task category, scored by price, usage volume, and recency.
Price / call$0.02
Success—
StatusUnknown
How this service works
A bundle of pay-per-call x402 resources for AI agents: /rank (best-service lookup by category), /snap (headless-browser screenshot/PDF/HTML), and /read (clean markdown extraction from any URL).
Output
A ranked list of x402 services matching the requested task category, each scored and ordered by a composite of price competitiveness, usage volume, and recency. Includes service URLs and scoring breakdowns to help agents select the best-fit option.
Example use cases
Find cheapest x402 API for web reading
“What are the top-ranked x402 services for reading and extracting content from web pages? I want them sorted so the most cost-effective and widely used ones come first.”
Discover x402 services for fact verification
“I need to pick an x402 service for verifying citations and facts against web pages — can you rank the available options by price, popularity, and recency so I can choose the best one?”
Agent tool selection for screenshot tasks
“My AI agent needs to take full-page screenshots. Which x402 services handle that task, and how do they rank against each other on price and recent usage volume?”
Technical details
Endpoint
POSThttps://x402-zadenworks.zaden-gaming.workers.dev/rank?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dynamically discover and select the best x402-compatible API for a given task at runtime, rather than hardcoding a service. Ideal for agent orchestrators that want to optimize for cost, popularity, or freshness across available x402 services before delegating a subtask.
Side effects
- Unknown or unsupported task category returns empty or error response
- No x402 services indexed for the category yields an empty ranked list
- Stale index data may cause recency scores to be outdated
- Payment failure (insufficient USDC balance) returns 402 Payment Required
- Malformed POST body returns 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| categoryrequired | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| resultsrequired | array | |
| categoryrequired | string | |
| generatedAt | — |
Tags
x402
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