> ## Documentation Index
> Fetch the complete documentation index at: https://docs.reflect.money/llms.txt
> Use this file to discover all available pages before exploring further.

# Get historical senior tranche statistics

> **Available on development API only.**

Retrieve time-bucketed historical statistics for a senior tranche. Returns hourly data for periods ≤ 7 days, daily data otherwise.



## OpenAPI

````yaml /api-reference/openapi.json get /tranches/senior/{id}/stats/historical
openapi: 3.0.3
info:
  title: Reflect API
  description: >-
    Interact with the Reflect infrastructure via API. Retrieve stablecoin and
    protocol stats. Generate transactions for minting and redeeming stablecoins.
    Manage integrations and issue whitelabel stablecoins.


    ## Rate Limiting

    - **Unauthenticated users**: 100 requests per minute

    - **Authenticated integrators**: 500 requests per minute


    ## Authentication

    To access higher rate limits, include your API key in the `X-API-Key`
    header. API keys can be obtained through the integration management
    endpoints.
  version: 1.0.0
  contact:
    name: Reflect
    url: https://reflect.money
servers:
  - url: https://prod.api.reflect.money
    description: Production environment
  - url: https://dev.api.reflect.money
    description: Development environment (includes /tranches endpoints)
security: []
tags:
  - name: Health
    description: Health check endpoints
  - name: Stablecoin
    description: Reflect stablecoins interaction endpoints.
  - name: Integration
    description: Custom integration management endpoints.
  - name: Stats
    description: Protocol statistics endpoints
  - name: Events
    description: Protocol events endpoints
  - name: Tranches - Senior
    description: >-
      Senior tranche endpoints (development API only). Deposit and redeem
      underlying stablecoins, query tranche statistics and exchange rates.
  - name: Tranches - Junior
    description: >-
      Junior tranche endpoints (development API only). Deposit and withdraw
      assets, manage cooldowns, query tranche statistics and exchange rates.
  - name: Tranches
    description: General tranche endpoints (development API only).
paths:
  /tranches/senior/{id}/stats/historical:
    get:
      tags:
        - Tranches - Senior
      summary: Get historical senior tranche statistics
      description: >-
        **Available on development API only.**


        Retrieve time-bucketed historical statistics for a senior tranche.
        Returns hourly data for periods ≤ 7 days, daily data otherwise.
      parameters:
        - name: id
          in: path
          description: Senior tranche ID (proxy state PDA address)
          required: true
          schema:
            type: string
        - name: period
          in: query
          description: >-
            Number of days for historical data (e.g., '7' for 7 days, '30' for
            30 days). Defaults to 7 days if not provided.
          required: false
          schema:
            type: string
            pattern: ^[0-9]+$
            default: '7'
        - name: cluster
          in: query
          description: Solana cluster to use (defaults to mainnet)
          required: false
          schema:
            type: string
            enum:
              - mainnet
              - devnet
            default: mainnet
      responses:
        '200':
          description: Historical senior tranche statistics
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SeniorTrancheHistoricalStatsResponse'
        '400':
          description: Invalid Senior tranche ID
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BadRequestErrorResponse'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InternalServerErrorResponse'
      security:
        - authenticatedIntegrator: []
components:
  schemas:
    SeniorTrancheHistoricalStatsResponse:
      type: object
      properties:
        success:
          type: boolean
          example: true
        data:
          type: object
          properties:
            period:
              type: string
              description: Period in days
            historicalData:
              type: array
              items:
                type: object
                properties:
                  stablecoin:
                    type: string
                  timestamp:
                    type: string
                    format: date-time
                  supply:
                    type: string
                  holders:
                    type: integer
                  principal:
                    type: string
                  yield:
                    type: string
                  volume:
                    type: string
                  exchange_rate_underlying:
                    type: string
                  exchange_rate_usdc:
                    type: string
                    nullable: true
                  apy_bps:
                    type: integer
                    nullable: true
                  apy_bps_7d:
                    type: integer
                    nullable: true
                  market_cap:
                    type: string
                    nullable: true
    BadRequestErrorResponse:
      type: object
      properties:
        success:
          type: boolean
          description: Whether the request was successful
          example: false
        message:
          type: string
          description: Error message describing what went wrong with the request
          example: 'Invalid request data: depositAmount must be positive'
      required:
        - success
        - message
    InternalServerErrorResponse:
      type: object
      properties:
        success:
          type: boolean
          description: Whether the request was successful
          example: false
        message:
          type: string
          description: Error message describing the server error
          example: Internal server error
      required:
        - success
        - message
  securitySchemes:
    authenticatedIntegrator:
      type: apiKey
      in: header
      name: Reflect-API-Key
      description: API key for integrators to access integration-specific endpoints.

````

This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.