> ## Documentation Index > Fetch the complete documentation index at: https://docs.coinversa.ai/llms.txt > Use this file to discover all available pages before exploring further. # Builder activity 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. ## OpenAPI ````yaml /api-reference/openapi.json get /api/public/v1/builders/{builder}/heatmap openapi: 3.1.0 info: title: coinversa-api version: 0.1.0 servers: - url: https://api.coinversa.ai description: Production security: [] paths: /api/public/v1/builders/{builder}/heatmap: get: tags: - Builder Analytics summary: Builder activity heatmap description: >- 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. operationId: get-api-public-v1-builders-by-builder-heatmap parameters: - description: Builder address (0x-hex) in: path name: builder required: true schema: description: Builder address (0x-hex) type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/BuilderHeatmapBody' description: OK '400': content: application/problem+json: schema: $ref: '#/components/schemas/APIError' description: Bad Request '401': content: application/problem+json: schema: $ref: '#/components/schemas/APIError' description: Unauthorized '422': content: application/problem+json: schema: $ref: '#/components/schemas/APIError' description: Unprocessable Entity '429': content: application/problem+json: schema: $ref: '#/components/schemas/APIError' description: Too Many Requests '500': content: application/problem+json: schema: $ref: '#/components/schemas/APIError' description: Internal Server Error '504': content: application/problem+json: schema: $ref: '#/components/schemas/APIError' description: Gateway Timeout security: - apiKey: [] components: schemas: BuilderHeatmapBody: additionalProperties: false properties: $schema: description: A URL to the JSON Schema for this object. examples: - https://api.coinversa.ai/schemas/BuilderHeatmapBody.json format: uri readOnly: true type: string builder: type: string builderName: description: Known display name for the builder; omitted if unknown type: string dataNotes: type: string days: description: Always 7 entries, Sunday first items: $ref: '#/components/schemas/BuilderHeatmapDay' type: - array - 'null' verified: $ref: '#/components/schemas/BuilderStamp' windowDays: description: 'Fixed sampling window: 84 days = trailing 12 weeks' format: int32 type: integer required: - builder - windowDays - days - dataNotes type: object APIError: additionalProperties: false properties: $schema: description: A URL to the JSON Schema for this object. examples: - https://api.coinversa.ai/schemas/APIError.json format: uri readOnly: true type: string code: description: Machine-readable error code type: string current_tier: description: Caller's effective tier type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string required_tier: description: Minimum tier for this operation type: string status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string upgrade_url: description: Where to upgrade type: string type: object BuilderHeatmapDay: additionalProperties: false properties: hours: description: >- Always 24 entries, hour 0 first; zero-activity cells are zero-valued, never omitted items: $ref: '#/components/schemas/BuilderHeatmapCell' type: - array - 'null' weekday: description: 0 = Sunday .. 6 = Saturday (UTC) format: int32 type: integer required: - weekday - hours type: object BuilderStamp: additionalProperties: false properties: coverage: $ref: '#/components/schemas/BuilderCoverage' description: >- Attribution coverage vs the ledger; null until the coverage pipeline is provisioned ledger_block: description: >- Latest block in HL's builder-fee ledger this data was verified against format: int64 type: integer ledger_chain_time: description: Chain timestamp of that ledger entry (RFC3339) type: string required: - ledger_block - ledger_chain_time - coverage type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object BuilderHeatmapCell: additionalProperties: false properties: feesUsd: description: Attributed builder fees in this cell format: double type: number fills: format: int64 type: integer hour: description: UTC hour of day (0-23) format: int32 type: integer volumeUsd: description: Attributed fill volume in this cell over the trailing 12 weeks format: double type: number required: - hour - volumeUsd - feesUsd - fills type: object BuilderCoverage: additionalProperties: false properties: attributed_fees_usd: description: Join-attributed fees in the rollup window format: double type: number computed_at: description: When the rollup was computed (RFC3339) type: string ledger_fees_usd: description: Exact ledger revenue in the rollup window format: double type: number ratio: description: >- attributed_fees / ledger_fees — the share of revenue the fill-level metrics account for format: double type: number window_end: description: End of that window (RFC3339) type: string window_start: description: Start of the window the coverage rollup was computed over (RFC3339) type: string required: - window_start - window_end - ledger_fees_usd - attributed_fees_usd - ratio - computed_at type: object securitySchemes: apiKey: description: Get one at https://coinversa.ai/developers in: header name: X-API-Key type: apiKey ````