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GET
ListPredictionMarkets

Authorizations

X-WorldMonitor-Key
string
header
required

User-issued WorldMonitor API key.

Query Parameters

page_size
integer<int32>

Maximum items per page (1-100).

cursor
string

Cursor for next page. Accepted but currently ignored; no-op until this handler supports the parameter.

category
enum<string>

Optional category filter (e.g., "Politics").

Available options:
ai,
tech,
crypto,
science,
economy,
fed,
inflation,
interest-rates,
recession,
trade,
tariffs,
debt-ceiling
query
string

Optional search query for market titles.

jmespath
string

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.

markets
object[]
pagination
object

PaginationResponse contains pagination metadata returned alongside list results.

fetchedAt
integer<int64>

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

dataAvailable
boolean

True when markets were evaluated against a seed snapshot. False means an empty payload is graceful degradation because the snapshot is unavailable.