> ## Documentation Index > Fetch the complete documentation index at: https://docs.ironflow.sh/llms.txt > Use this file to discover all available pages before exploring further. # Hyperliquid HIP-4 outcome volume by month > GET /v1/predictions/history returns traded volume on Hyperliquid's HIP-4 outcome markets by calendar month since August 2026, plus the last 7 days. ## OpenAPI ````yaml GET /v1/predictions/history openapi: 3.1.0 info: title: Ironflow API version: 1.0.0 description: > Hyperliquid market data from Ironflow's own nodes: tick-level fills and trades, candles, funding rates, liquidations, mark prices, open interest, markets and wallet analytics over REST, live Server-Sent Events streams and read-only SQL. One schema across native HL perps, HIP-3 builder markets, HIP-4 outcome contracts and HL spot. The same data is a hosted MCP server for AI agents at `https://mcp.ironflow.sh/mcp`, and agents with a USDC wallet on Base can pay per call with x402, no key: the data GET endpoints are also served at `/x402/v1/...` (discovery: `https://api.ironflow.sh/openapi.json` and `https://api.ironflow.sh/.well-known/x402`). **Base URL:** `https://api.ironflow.sh` **Authentication:** Read endpoints work without a key (keyless access) or with a Bearer token in the `Authorization` header. Writes always need a key. ``` Authorization: Bearer if_your_api_key ``` Get a free key at https://ironflow.sh/key. **Access levels:** | Access | Requests per minute | History | Max range per request | |---|---|---|---| | No key | 30 per IP (300 a day) | 24 hours | 1 hour | | Free key | 60 | 14 days | 6 hours | | Explorer | 100 | 90 days | 24 hours | | Builder | 1,000 | 1 year | 7 days | | Enterprise | 10,000 | full | unlimited | Without a market filter, high-volume endpoints allow at most 4 hours per request. `/v1/trades` filtered to one perp or spot market allows 24 hours per request without a key and on a free key. Each caller can also read a set number of rows per hour: 2 billion without a key, 10 billion on a free key, 100 billion on Explorer, 500 billion on Builder, none set on Enterprise. REST and SQL count separately. Over it, REST answers 429 `READ_BUDGET_EXCEEDED` until the next hour. A header that is present but malformed returns 401; keyless access applies only when no `Authorization` header is sent. The keyless 300 a day is a rolling 24 hours per IP: past it, `KEYLESS_DAILY_LIMIT` (429, or 402 with x402 payment terms) carries a `Retry-After` of the seconds until the next call is allowed. **Data availability:** fills and trades start on 25 May 2025; other datasets start later (funding 2025-09-27, open interest and mark prices 2026-04-29). Bulk history is free to download from https://huggingface.co/ironflow. **Timestamps:** All timestamps are Unix milliseconds (int64). **Pagination:** Paginated endpoints return a `cursor` in `pagination.next_cursor`. Pass it as the `cursor` query parameter to fetch the next page. When `pagination.has_more` is `false`, you have reached the last page. **Notices:** a successful JSON object may start with `notice`, the `X-Ironflow-Notice` header in the body: what was served when it differs from what was asked (a keyless sample, a shortened history, a guessed path) and how to get the rest. **Guessed paths:** a few paths callers guess are answered by the endpoint they mean, with a `notice` and the `X-Ironflow-Canonical` header naming it: `/v1/liquidations/aggregate`, `/v1/summary/liquidations` and similar by `/v1/liquidations/summary`, `/v1/liquidations/buckets` and `heatmap` by `/v1/analytics/liquidation-levels`, and `/v1/liquidations/map/BTC-PERP` by `/v1/liquidations/map?market=BTC-PERP`. A path with trailing `.`, `,`, `;` or `)` (`/v1/query.`, copied from a sentence) is answered by the endpoint without them, with the same method, query and body. OpenAI-style paths (`/v1/models`, `/v1/chat/completions`) answer 404: this is not an LLM API, and agents use the MCP server above. contact: name: Ironflow Support url: https://ironflow.sh servers: - url: https://api.ironflow.sh description: Production security: - bearerAuth: [] - {} tags: - name: Hyperliquid RPC description: Your API key as a Hyperliquid /info URL, on your plan's limits. - name: Market Data description: Historical tick-level market data stored in ClickHouse. - name: Analytics description: >- Aggregated analytics. Net flows, funding stats and the liquidation map markets work without a key; liquidation levels, the liquidation map and the vault leaderboard return a sample without one; order flow needs a key (a free key works). - name: Cohorts description: Predefined and custom address groups for filtering market data. - name: Alerts description: >- Liquidation alerts that Ironflow posts to your webhook, Discord channel, Slack channel or Telegram chat. - name: Ironbox description: >- Secure, sandboxed environments in Tokyo, next to Hyperliquid, where a trading agent runs with Ironflow's data, analytics, alerts and execution. Any API key, free included. - name: Query description: >- Read-only ClickHouse SQL over curated Hyperliquid tables (hl.*), limited by tier. - name: Billing description: >- Paid plans, paid in USDC on Hyperliquid or with x402 on Base. No card, no account page. - name: System description: Health checks and metadata endpoints. - name: TradingApp description: >- The trading terminal's own endpoints (terminal.ironflow.sh), wallet-session auth. Not part of the public data API; left out of the docs copy. paths: /v1/predictions/history: get: tags: - Market Data summary: HIP-4 outcome volume by month description: | Traded volume on Hyperliquid's HIP-4 outcome markets by calendar month since August 2026 (the first month with direction recorded on every fill) plus the last 7 days. Each trade counts once, as in Hyperliquid's outcome candles. Read from the hourly rollup, so figures end at the last complete hour (`as_of`). Cached for 10 minutes. No key. operationId: getPredictionsHistory responses: '200': description: Monthly volume. content: application/json: schema: type: object required: - months - volume_7d_usd - as_of - computed_at properties: months: type: array items: type: object required: - month - volume_usd - trades - partial properties: month: type: string description: YYYY-MM example: 2026-10 volume_usd: type: number trades: type: integer partial: type: boolean description: The current month not over yet: null volume_7d_usd: type: number as_of: type: string format: date-time description: Last complete hour the rollup covers computed_at: type: integer format: int64 description: Unix seconds example: months: - month: 2026-08 volume_usd: 11970447 trades: 301237 partial: false - month: 2026-10 volume_usd: 76556531 trades: 3663309 partial: false volume_7d_usd: 48000000 as_of: '2026-11-08T10:00:00Z' computed_at: 1794137500 security: [] components: securitySchemes: bearerAuth: type: http scheme: bearer description: >- Ironflow API key, format `if_xxxx`. Free keys at https://ironflow.sh/key. Optional on read endpoints. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.