> ## 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 user journey economics > Lifetime economics of the builder's trailing-year acquisition cohort (wallets with 3+ attributed fills): average and median revenue per wallet, concentration (avg/median), median days from first fill to peak-revenue day and to 50% and 75% of lifetime revenue, and where users peak (before day 7, days 7-30, after day 30). Answers how fast and how unevenly a builder monetizes new users. BREAKING (2026-08-28): avgRevenueUsd, medianRevenueUsd, concentration, and every avgDays/medianDays field are now NULLABLE and serve null when users = 0 (no qualifying cohort). They previously served 0, which clients could not distinguish from a cohort that genuinely earned nothing. Counts (users, peakDayDistribution) are unchanged and still serve 0. ## OpenAPI ````yaml /api-reference/openapi.json get /api/public/v1/builders/{builder}/journey 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}/journey: get: tags: - Builder Analytics summary: Builder user journey economics description: >- Lifetime economics of the builder's trailing-year acquisition cohort (wallets with 3+ attributed fills): average and median revenue per wallet, concentration (avg/median), median days from first fill to peak-revenue day and to 50% and 75% of lifetime revenue, and where users peak (before day 7, days 7-30, after day 30). Answers how fast and how unevenly a builder monetizes new users. BREAKING (2026-08-28): avgRevenueUsd, medianRevenueUsd, concentration, and every avgDays/medianDays field are now NULLABLE and serve null when users = 0 (no qualifying cohort). They previously served 0, which clients could not distinguish from a cohort that genuinely earned nothing. Counts (users, peakDayDistribution) are unchanged and still serve 0. operationId: get-api-public-v1-builders-by-builder-journey 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/BuilderJourneyBody' 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: BuilderJourneyBody: additionalProperties: false properties: $schema: description: A URL to the JSON Schema for this object. examples: - https://api.coinversa.ai/schemas/BuilderJourneyBody.json format: uri readOnly: true type: string avgRevenueUsd: description: >- Mean lifetime attributed builder fees per qualifying wallet; null when there is no qualifying cohort (users = 0). Null means unknown, never zero format: double type: - number - 'null' builder: type: string builderName: description: Known display name for the builder; omitted if unknown type: string concentration: description: >- avgRevenueUsd / medianRevenueUsd — how whale-skewed per-user revenue is (1 = evenly spread). Null when there is no qualifying cohort, and also when the median is 0 (the ratio is undefined) format: double type: - number - 'null' dataNotes: type: string daysToHalfRevenue: $ref: '#/components/schemas/BuilderJourneyDays' description: >- Days from first fill to the day cumulative attributed fees first reached 50% of the wallet's lifetime total daysToPeak: $ref: '#/components/schemas/BuilderJourneyDays' description: >- Days from a wallet's first attributed fill to its single highest-revenue day (earliest such day on fee ties) daysToThreeQuartersRevenue: $ref: '#/components/schemas/BuilderJourneyDays' description: >- Days from first fill to the day cumulative attributed fees first reached 75% of the wallet's lifetime total medianRevenueUsd: description: >- Median lifetime attributed builder fees per qualifying wallet; null when there is no qualifying cohort (users = 0). Null means unknown, never zero format: double type: - number - 'null' minFills: description: >- Inclusion floor: wallets need >= this many lifetime attributed fills (fixed at 3 so one-shot wallets don't define days-to-peak as trivially zero) format: int32 type: integer peakDayDistribution: $ref: '#/components/schemas/BuilderJourneyPeakDistribution' description: Qualifying wallets bucketed by when their peak-revenue day landed users: description: >- Wallets the journey stats are computed over — those whose first builder-fee order via this builder was within the last 365 days and with at least minFills lifetime attributed fills (see dataNotes) format: int32 type: integer verified: $ref: '#/components/schemas/BuilderStamp' required: - builder - users - minFills - avgRevenueUsd - medianRevenueUsd - concentration - daysToPeak - daysToHalfRevenue - daysToThreeQuartersRevenue - peakDayDistribution - 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 BuilderJourneyDays: additionalProperties: false properties: avgDays: description: >- Mean across qualifying wallets; null when there is no qualifying cohort (users = 0) — an absence of data, not a zero format: double type: - number - 'null' medianDays: description: >- Median across qualifying wallets; null when there is no qualifying cohort (users = 0) — an absence of data, not a zero format: double type: - number - 'null' required: - avgDays - medianDays type: object BuilderJourneyPeakDistribution: additionalProperties: false properties: from7To30d: description: Peak-revenue day 7 to 30 days (inclusive) after the first fill format: int32 type: integer over30d: description: Peak-revenue day more than 30 days after the first fill format: int32 type: integer under7d: description: >- Wallets whose peak-revenue day came less than 7 days after their first fill format: int32 type: integer required: - under7d - from7To30d - over30d 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 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 ````