ListPredictionMarkets
ListPredictionMarkets retrieves active prediction markets from seeded market snapshots. Empty markets with fetched_at=0 or data_available=false means the seed snapshot is unavailable/degraded, not that there are confirmed zero markets.
Authorizations
User-issued WorldMonitor API key.
Query Parameters
Maximum items per page (1-100).
Cursor for next page. Accepted but currently ignored; no-op until this handler supports the parameter.
Optional category filter (e.g., "Politics").
ai, tech, crypto, science, economy, fed, inflation, interest-rates, recession, trade, tariffs, debt-ceiling Optional search query for market titles.
Optional JMESPath expression applied server-side to project or reduce the JSON response before it is returned (mirrors the MCP jmespath argument). Invalid expressions, expressions larger than 1024 UTF-8 bytes, or projections that exceed the 256 KB output cap return HTTP 400 with a {_jmespath_error, original_keys} envelope. Grammar and worked examples: https://www.worldmonitor.app/docs/mcp-jmespath.
Response
Successful response
ListPredictionMarketsResponse contains prediction markets matching the request.
PaginationResponse contains pagination metadata returned alongside list results.
Time the seed snapshot was fetched, as Unix epoch milliseconds. A value of 0 means the snapshot is unavailable/degraded, not that there are confirmed zero matching markets.. Warning: Values > 2^53 may lose precision in JavaScript
True when markets were evaluated against a seed snapshot. False means an empty payload is graceful degradation because the snapshot is unavailable.
