# PolySignal Market Ranker

> PolySignal Market Ranker is a paid API for AI agents from polymarket-signal-api.pwnker-polymarket-signals.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Ranks current Polymarket prediction market opportunities by expected value, confidence, size hint, risk, and staleness for agent-driven research workflows

## Facts

- Endpoint: GET https://polymarket-signal-api.pwnker-polymarket-signals.workers.dev/v1/markets/rank
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polysignal-market-ranker-7787da76
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QsNhBvhSRUtIwh2S5MTrM

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 polysignal-market-ranker-7787da76
```

Example prompt: Pull the current PolySignal market rankings for me — I want to see which Polymarket opportunities have the highest expected value and confidence scores right now so I can decide where to allocate.

## When to prefer this

Choose this endpoint when you need a pre-scored, ranked view of Polymarket opportunities rather than raw market data — ideal for agent workflows that need to prioritize which markets to research or trade without doing their own EV calculations. Prefer this over raw Polymarket API access when you want aggregated signal (EV, confidence, risk, staleness) in a single call.

## Known failure modes

- No markets returned if Polymarket data feed is unavailable
- Stale scores if upstream data has not refreshed recently
- HTTP 402 if payment of $0.03 USDC is not provided via x402 protocol
- Rate limiting if too many calls are made in quick succession
- Empty ranked list if no markets meet quality thresholds

## How this service works

PolySignal ranks current Polymarket opportunities by EV, confidence, size hint, risk, and staleness for agent research workflows.

## Output

A ranked list of current Polymarket prediction market opportunities, each scored by expected value (EV), confidence, suggested position size hint, risk level, and data staleness — enabling an agent to prioritize which markets to act on.

## 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": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polysignal-market-ranker-7787da76/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-signal-api.pwnker-polymarket-signals.workers.dev](https://www.zero.xyz/host/polymarket-signal-api.pwnker-polymarket-signals.workers.dev/llms.txt)