# OrcaTrace Polymarket Signal Feed

> OrcaTrace Polymarket Signal Feed is a paid API for AI agents from api.orcatrace.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns a single quality-gated Polymarket signal item — a top mover, whale entry, or predetermined signal — with order-book microstructure data, for $0.01 USDC per call.

## Facts

- Endpoint: GET https://api.orcatrace.dev/v1/signal
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orcatrace-polymarket-signal-feed-b945cbfe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3LKEZ3CMvd3mWq1t7rg3r

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 orcatrace-polymarket-signal-feed-b945cbfe
```

Example prompt: Can you pull the latest OrcaTrace Polymarket signal — I want to see if there's a quality-gated mover or whale entry right now with the order-book microstructure details?

## When to prefer this

Use this endpoint when you need actionable, quality-gated Polymarket trading signals — specifically top movers with significant volume and depth, named whale entries, or predetermined signals — and want order-book microstructure included. Prefer this over raw Polymarket APIs when you need pre-filtered, high-quality signal data at low per-call cost with compute-first billing.

## Known failure modes

- Feed index out of range — no item at requested index
- No qualifying signal available at this time (quality gates not met)
- Payment failure via x402 — charge not processed
- Network timeout or service unavailability
- Malformed query parameter for index

## How this service works

Paid ($0.01 USDC via x402). One Polymarket feed item: quality-gated mover (vol>=$10k & depth>=$2.5k, +order-book microstructure), whale entry (named whale, with calibration + microstructure), or predetermined signal. Use ?index=N for a specific item, omit for latest. Compute-first / settle-after — you are never charged for an error.

## Output

A single Polymarket feed item that passes quality gates (volume >= $10k, depth >= $2.5k), which may be a top mover with order-book microstructure, a named whale entry with calibration and microstructure data, or a predetermined signal. The caller is only charged on success.

## 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",
     "required": [],
     "properties": {
      "index": {
       "type": "integer",
       "description": "Feed index of the item to fetch. Omit for latest."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "data": {},
   "type": "mover",
   "title": "Will the next US-Iran meeting be in Switzerland?",
   "createdAt": "2026-07-09T18:40:00.000Z",
   "feedIndex": 1042
  },
  "charged": true,
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/orcatrace-polymarket-signal-feed-b945cbfe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.orcatrace.dev](https://www.zero.xyz/host/api.orcatrace.dev/llms.txt)