---
title: "Get market depth"
method: GET
path: "/preview/v2/orderbook/depth"
tags: ["Orderbook"]
---

# Get market depth

`GET /preview/v2/orderbook/depth`

> ⚠️ This endpoint is in [public preview](/preview/roadmap).

Depth of book for the given requirements and delivery window, aggregated by instance SKU and price level. Individual orders and participants are not exposed.

## Query parameters

- `requirements` string
- `start_at` integer, required — Unix timestamp.
- `end_at` integer, required — Unix timestamp.
- `depth` integer

## Response `200`

Market depth.

- OrderbookDepthResponse — Depth of book for one delivery window. Bids descending (highest first), asks ascending (lowest first). Either array may be empty when no orders rest on that side.
  - `requirements` Requirements, required — Key/value filters on instance SKU properties. Valid keys and values are published at `GET /v2/instance_sku_property_catalog`. Empty map = no constraints.
  - `start_at` integer, required — Unix timestamp.
  - `end_at` integer, required — Unix timestamp.
  - `requested_at` integer, required — Unix timestamp.
  - `bids` PriceLevel[], required — Bids sorted descending by rate (best bid first).
    - `instance_sku` union, required — Accepts the canonical prefix below; additional legacy prefixes are aliased for read compatibility. Writes always emit the canonical form.
      - string
      - string — Legacy alias prefix; accepted on read, never emitted on write.
    - `dollars_per_node_hour` string, required — Price in dollars per node-hour, encoded as a decimal string. Prices are rounded to the nearest $0.000060/node-hour market tick. This is one microdollar per node-minute. Responses contain the rounded value with six decimal places. Inputs must contain a decimal point, be non-negative, and not exceed $500/node-hour.
    - `allocation_schedule_delta` ScheduleEntry[], required — Node count over time, as a list of `[start_at, end_at)` time ranges. Example: 5 nodes from t=0 to t=3600 is `[{"start_at": 0, "end_at": 3600, "node_count": 5}]`. `start_at` and `end_at` must be 60-second aligned, `node_count` must be non-negative. On non-final entries, `end_at` may be omitted (inferred from the next entry's `start_at`); gaps fill with `node_count: 0`.
      - `start_at` integer, required — Unix timestamp.
      - `end_at` integer — Unix timestamp.
      - `node_count` integer, required
  - `asks` PriceLevel[], required — Asks sorted ascending by rate (best ask first).
    - `instance_sku` union, required — Accepts the canonical prefix below; additional legacy prefixes are aliased for read compatibility. Writes always emit the canonical form.
      - string
      - string — Legacy alias prefix; accepted on read, never emitted on write.
    - `dollars_per_node_hour` string, required — Price in dollars per node-hour, encoded as a decimal string. Prices are rounded to the nearest $0.000060/node-hour market tick. This is one microdollar per node-minute. Responses contain the rounded value with six decimal places. Inputs must contain a decimal point, be non-negative, and not exceed $500/node-hour.
    - `allocation_schedule_delta` ScheduleEntry[], required — Node count over time, as a list of `[start_at, end_at)` time ranges. Example: 5 nodes from t=0 to t=3600 is `[{"start_at": 0, "end_at": 3600, "node_count": 5}]`. `start_at` and `end_at` must be 60-second aligned, `node_count` must be non-negative. On non-final entries, `end_at` may be omitted (inferred from the next entry's `start_at`); gaps fill with `node_count: 0`.
      - `start_at` integer, required — Unix timestamp.
      - `end_at` integer — Unix timestamp.
      - `node_count` integer, required

## Other responses

- `401` — Unauthorized.
- `422` — Validation failed.
- `500` — Internal server error.

---

[API](https://skmtc.dev/sfcompute/apis/sfc-api.md) · [All operations](https://skmtc.dev/sfcompute/apis/sfc-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/sfcompute/sfc-api/revisions/f3ff1539c0d9/schema)