Mono

Mono Investment API

Investment holdings for a linked account.

Documentation GitHub OpenAPI

Operations 2

GET /v2/accounts/{id}/assets Assets #

GET /v2/accounts/{id}/earnings Earnings #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Mono Connect Investment API
  description: A grounded subset of the Mono open banking API for Africa.
  version: '2.0'
  contact:
    name: Mono
    url: https://mono.co
  x-provenance: Endpoint paths/methods grounded in docs.mono.co (2026-07-12). Request/response schemas are modeled and should be reconciled against the live API reference.
servers:
- url: https://api.withmono.com
  description: Mono production API host
security:
- monoSecKey: []
tags:
- name: Investment
  description: Investment holdings for a linked account.
paths:
  /v2/accounts/{id}/assets:
    parameters:
    - $ref: '#/components/parameters/AccountId'
    get:
      operationId: getAssets
      tags:
      - Investment
      summary: Assets
      description: Retrieves investment assets/holdings for a linked account.
      responses:
        '200':
          description: Investment assets.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Asset'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v2/accounts/{id}/earnings:
    parameters:
    - $ref: '#/components/parameters/AccountId'
    get:
      operationId: getEarnings
      tags:
      - Investment
      summary: Earnings
      description: Retrieves investment earnings/returns for a linked account.
      responses:
        '200':
          description: Investment earnings.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      type: object
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    Error:
      type: object
      properties:
        status:
          type: string
        message:
          type: string
    Asset:
      type: object
      properties:
        name:
          type: string
        type:
          type: string
        cost:
          type: number
        return:
          type: number
        quantity:
          type: number
        currency:
          type: string
  responses:
    Unauthorized:
      description: The `mono-sec-key` is missing or invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  parameters:
    AccountId:
      name: id
      in: path
      required: true
      description: The permanent account id returned by the exchange-token endpoint.
      schema:
        type: string
  securitySchemes:
    monoSecKey:
      type: apiKey
      in: header
      name: mono-sec-key
      description: Secret key for the application, found in the Mono dashboard. Sent on every server-to-server request in the `mono-sec-key` header. Use test keys in the sandbox and live keys in production.