# Pulse API – Polymarket Standard Prediction Analysis

> Pulse API – Polymarket Standard Prediction Analysis is a paid API for AI agents from pulse-api-production-7aae.up.railway.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-27).

Returns a concise, evidence-based analysis of a selected Polymarket prediction market question, including probability estimate, market quality assessment, invalidation risks, limitations, and provenance.

## Facts

- Endpoint: POST https://pulse-api-production-7aae.up.railway.app/base/v1/analysis/prediction/standard?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pulse-api-polymarket-standard-prediction-analysis-1be751b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BrF2yWQH0ub8UvSCJaAMc

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 pulse-api-polymarket-standard-prediction-analysis-1be751b9 -d '<json body>'
```

Example prompt: Can you give me a concise, evidence-based analysis of Polymarket market ID '0x1234abcd...' — I want to see the current probability, market quality, any invalidation risks, and what limitations I should know about, in English?

## When to prefer this

Choose this endpoint when you need a quick, structured, evidence-based snapshot of a single Polymarket question — covering probability, quality, and invalidation risks — without requiring deep technical chart analysis or counter-case reasoning. Prefer the 'detailed' sibling endpoint if you need a full counter-case analysis or 4H chart context; use this standard endpoint for fast, concise due diligence or monitoring tasks.

## Known failure modes

- Invalid or inactive primaryMarketId returns an error or empty result
- Market has resolved or expired, making analysis stale or unavailable
- Unsupported language code other than 'en' or 'zh' returns a validation error
- Payment of 0.2 USDC not provided or declined, blocking access
- Request with more than 6 additionalMarketIds is rejected by schema validation
- Network or Railway hosting downtime causes 503 errors

## How this service works

A concise evidence-based view of one selected Polymarket question with probability, market quality, invalidation, limitations and provenance.

## Output

A structured JSON report containing the current probability for the selected Polymarket question, a market quality rating, conditions under which the market could be invalidated, known limitations of the analysis, and provenance details about where the data came from.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "primaryMarketId",
      "lang"
     ],
     "properties": {
      "lang": {
       "enum": [
        "en",
        "zh"
       ],
       "type": "string"
      },
      "primaryMarketId": {
       "type": "string",
       "description": "Caller-selected active market from /v1/polymarket/markets; verify its detail before payment. Example is a historical snapshot, not guaranteed active."
      },
      "additionalMarketIds": {
       "type": "array",
       "items": {
        "type": "string"
       },
       "maxItems": 6
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "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/pulse-api-polymarket-standard-prediction-analysis-1be751b9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pulse-api-production-7aae.up.railway.app](https://www.zero.xyz/host/pulse-api-production-7aae.up.railway.app/llms.txt)