---
title: "Global daily prediction-market volume trend"
method: GET
path: "/api/prediction-markets/volume-history"
tags: ["public-pm-data"]
---

# Global daily prediction-market volume trend

`GET /api/prediction-markets/volume-history`

## Request

- Base URL: `https://api.coinrithm.com`
- URL: `https://api.coinrithm.com/api/prediction-markets/volume-history`
- Auth: none required

Keyless daily volume series (day-over-day delta of cumulative volume,
summed across real-money venues only) with a per-venue breakdown,
captured since 2026-07-02 and bounded to a rolling ~90-day window. A
day or venue with no known value is a gap (null), never a zero bar.

## Response `200`

Daily global + per-venue volume series

- PublicPmVolumeHistoryResponse
  - `days` object[], required
    - `day` string
    - `volume24h` number, nullable
    - `bySource` object[]
      - `source` string
      - `name` string
      - `volume24h` number, nullable
  - `updatedAt` string, date-time, required
  - `meta` object

## Other responses

- `500`: Server error

---

[API](https://skmtc.dev/coinrithm/apis/coinrithm-agent-trading-api.md) · [All operations](https://skmtc.dev/coinrithm/apis/coinrithm-agent-trading-api/llms.txt) · [OpenAPI document](https://skmtc.dev/coinrithm/apis/coinrithm-agent-trading-api/revisions/28fb59f285fe?raw)