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BeliefState Research Belief Search
x402
BeliefState Research Belief Search is a paid API for AI agents from beliefstate.ai, paid per call via x402, $1.5/call, status unknown (last checked 2026-10-29).
Searches a curated database of top analyst investment theses (beliefs) with optional filtering by ticker, direction, status, time horizon, and date
Price / call$1.5
Success—
StatusUnknown
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 paginated list of analyst belief objects, each containing the investment thesis, directional signal (bullish/bearish/etc.), current status (active/strengthened/weakened/etc.), supporting evidence with dates, available outcomes, associated ticker and entity, and analyst attribution. Includes pagination cursor for subsequent pages and an as-of timestamp.
Example use cases
Pre-trade analyst thesis check
“Before I take a position on NVDA, can you search for all active bullish analyst beliefs on it and show me the top 10 with their supporting evidence?”
Monitor recently changed beliefs
“Pull up any analyst beliefs that have changed since January 1st, 2025 — I want to see which theses have been strengthened or reversed lately.”
Bearish conviction screening
“Search for bearish analyst theses on META with a status of 'active' or 'strengthened' — I want to know which top analysts have been doubling down on a negative view.”
Technical details
Endpoint
POSThttps://beliefstate.ai/v1/research/search_beliefs?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to discover or filter analyst investment theses at scale — especially when you want to narrow by ticker, directional bias (bullish/bearish), belief status (active, strengthened, reversed), or recency of change. Prefer this over broader research endpoints when you want structured belief objects with evidence and outcomes rather than narrative summaries.
Side effects
- Missing required query parameter 'q' on first page returns validation error
- Invalid date format for as_of or changed_since returns 400
- Unknown ticker or entity_id returns empty results rather than an error
- Cursor from a different search query returns unexpected results
- Rate limiting or payment failure returns 402 or 429
- Limit exceeding 50 returns schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-10-24T00:00:00.000Z",
"generated_at": "2026-10-24T00:00:00.000Z",
"schema_version": "1"
}
}Tags
x402
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