---
title: "Builder activity heatmap"
method: GET
path: "/api/public/v1/builders/{builder}/heatmap"
tags: ["Builder Analytics"]
---

# Builder activity heatmap

`GET /api/public/v1/builders/{builder}/heatmap`

When this builder's users trade: a 7x24 UTC weekday-by-hour grid of attributed volume, builder fees, and fill counts over the trailing 12 weeks, zero-filled and Sunday-first. Useful for support-coverage planning, feature-launch timing, and spotting bot-like around-the-clock flow versus human trading hours.

## Path parameters

- `builder` string, required — Builder address (0x-hex)

## Response `200`

OK

- BuilderHeatmapBody
  - `$schema` string, uri — A URL to the JSON Schema for this object.
  - `builder` string, required
  - `builderName` string — Known display name for the builder; omitted if unknown
  - `dataNotes` string, required
  - `days` BuilderHeatmapDay[], nullable, required — Always 7 entries, Sunday first
    - `hours` BuilderHeatmapCell[], nullable, required — Always 24 entries, hour 0 first; zero-activity cells are zero-valued, never omitted
      - `feesUsd` number, double, required — Attributed builder fees in this cell
      - `fills` integer, required
      - `hour` integer, required — UTC hour of day (0-23)
      - `volumeUsd` number, double, required — Attributed fill volume in this cell over the trailing 12 weeks
    - `weekday` integer, required — 0 = Sunday .. 6 = Saturday (UTC)
  - `verified` BuilderStamp
    - `coverage` BuilderCoverage, required
      - `attributed_fees_usd` number, double, required — Join-attributed fees in the rollup window
      - `computed_at` string, required — When the rollup was computed (RFC3339)
      - `ledger_fees_usd` number, double, required — Exact ledger revenue in the rollup window
      - `ratio` number, double, required — attributed_fees / ledger_fees — the share of revenue the fill-level metrics account for
      - `window_end` string, required — End of that window (RFC3339)
      - `window_start` string, required — Start of the window the coverage rollup was computed over (RFC3339)
    - `ledger_block` integer, required — Latest block in HL's builder-fee ledger this data was verified against
    - `ledger_chain_time` string, required — Chain timestamp of that ledger entry (RFC3339)
  - `windowDays` integer, required — Fixed sampling window: 84 days = trailing 12 weeks

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `422` — Unprocessable Entity
- `429` — Too Many Requests
- `500` — Internal Server Error
- `504` — Gateway Timeout

---

[API](https://skmtc.dev/coinversa/apis/coinversa-api.md) · [All operations](https://skmtc.dev/coinversa/apis/coinversa-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/coinversa/coinversa-api/revisions/77c03c427063/schema)