# Manifold Markets Prediction Search

> Manifold Markets Prediction Search is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-28).

Search Manifold Markets play-money prediction market for open questions with crowd-sourced probability, trading volume, bettor count, and close date

## Facts

- Endpoint: GET https://bess-x402.onrender.com/v1/predictions/manifold/search?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/manifold-markets-prediction-search-72232e23
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2OmRKeMGLch_CM5_5gwxH

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 manifold-markets-prediction-search-72232e23
```

Example prompt: Search Manifold Markets for open prediction questions about whether GPT-5 will be released before 2026 — give me the top 5 results with their current probabilities and close dates.

## When to prefer this

Use this endpoint when you need crowd-sourced probability estimates on topics that real-money prediction markets (like Polymarket or Kalshi) don't cover, or when you want a broad range of open questions across AI, tech, science, and politics. Prefer this over financial data APIs for forward-looking probabilistic crowd forecasts rather than historical or market data.

## Known failure modes

- Missing required query parameter 'q' returns a 400 error
- No matching markets found returns an empty result set
- Manifold Markets API downtime causes upstream failures
- limit out of range (below 1 or above 50) may return an error or be clamped
- Overly niche queries may return zero results

## How this service works

Search Manifold Markets, the largest play-money prediction community, for open questions on AI, tech, science, politics and more, with probability, volume, bettor count and close date. Use for crowd forecasts on topics real-money markets don't cover.

## Output

Returns a list of Manifold Markets prediction questions matching the search query, each including the question title, current crowd probability, trading volume, number of bettors, close date, and a link to the market. Results are limited to a configurable number (1-50).

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Search words"
      },
      "limit": {
       "type": "integer",
       "description": "Maximum number of results (1-50)"
      }
     }
    }
   },
   "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/manifold-markets-prediction-search-72232e23/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bess-x402.onrender.com](https://www.zero.xyz/host/bess-x402.onrender.com/llms.txt)