# BeliefState Refresh Market Data

> BeliefState Refresh Market Data is a paid API for AI agents from beliefstate.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Triggers a refresh of market data for a specific stock ticker or tracked entity on the BeliefState analyst research platform

## Facts

- Endpoint: POST https://beliefstate.ai/v1/research/refresh_market_data?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/beliefstate-refresh-market-data-1b8af5bc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HyGUhd5Y_E4yqAY3NVAih

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 beliefstate-refresh-market-data-1b8af5bc -d '<json body>'
```

Example prompt: Refresh the market data for NVDA on BeliefState so I have the latest analyst research and evidence before I review my position.

## When to prefer this

Use this endpoint when you need to ensure the BeliefState platform has the most current market data for a specific ticker or tracked entity before querying analyst theses, evidence, or outcomes. Prefer this over passive reads when your workflow depends on data freshness, especially before time-sensitive analysis like pre-earnings reviews or portfolio rebalancing decisions.

## Known failure modes

- Missing both ticker and entity_id — request fails with validation error
- Invalid ticker format (exceeds 32 characters or is empty) — rejected by schema validation
- Malformed or invalid UUID for entity_id — rejected with format error
- Entity or ticker not found in BeliefState system — returns not found error
- Rate limiting or payment failure — returns payment-required or throttle error
- Market data source temporarily unavailable — may return stale or partial data

## How this service works

The first AI-powered platform for top analyst research. Get theses from top analysts, dated evidence, and available outcomes for your AI.

## Output

Returns a JSON envelope with a schema_version, a generated_at timestamp indicating when the response was produced, and an as_of timestamp indicating the freshness of the underlying market data. The full response schema includes refreshed market data fields for the requested ticker or entity.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {
      "ticker": {
       "type": "string",
       "maxLength": 32,
       "minLength": 1
      },
      "entity_id": {
       "type": "string",
       "format": "uuid",
       "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
       "description": "Released subject ID returned by search_entities."
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "const": "POST"
    },
    "bodyType": {
     "type": "string",
     "const": "json"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "$comment": "Envelope excerpt only. Complete response schema: https://beliefstate.ai/v1/research/refresh_market_data?schema=output",
     "required": [
      "schema_version",
      "generated_at",
      "as_of"
     ],
     "properties": {
      "as_of": {
       "type": "string",
       "format": "date-time"
      },
      "generated_at": {
       "type": "string",
       "format": "date-time"
      },
      "schema_version": {
       "type": "string",
       "const": "1"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-10-24T00:00:00.000Z",
  "generated_at": "2026-10-24T00:00:00.000Z",
  "schema_version": "1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/beliefstate-refresh-market-data-1b8af5bc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from beliefstate.ai](https://www.zero.xyz/host/beliefstate.ai/llms.txt)