AMG Funds Data API

openapi: 3.1.0
info:
  title: AMG Funds Data API
  version: v1
  summary: Undocumented first-party JSON API on wealth.amg.com serving AMG Funds product, performance and portfolio data.
  description: >-
    The AMG Funds Data API is the JSON surface that backs the AMG Wealth Platform product pages at
    https://wealth.amg.com. It is exposed by an AMG-authored WordPress REST namespace, `amgfundsdata/v1`,
    and its route table is published by the site's own machine-readable discovery document at
    https://wealth.amg.com/wp-json/ (namespaces list) and https://wealth.amg.com/wp-json/amgfundsdata/v1
    (route + method table).

    IMPORTANT PROVENANCE NOTE. Affiliated Managers Group does NOT publish this as a developer program:
    there is no developer portal, no API reference, no published OpenAPI, no key issuance, no terms
    covering programmatic use, and no support channel for it. This document was DERIVED by API
    Evangelist from the route table the site itself serves, plus live anonymous responses observed on
    2026-08-30. Every path, method and path parameter below appears verbatim in the provider's own
    discovery document; nothing was invented. Response schemas are described from observed payloads and
    are intentionally loose, because the provider publishes no schema.

    The endpoints split into two shapes. `/products-data`, `/products-table` and `/products/funds`
    return structured fund data (ticker, fund_id, fund/asset class, NAV, trailing performance,
    Morningstar rating, share class, manager). The `fund-detail/*`, `quickview`, `morningstar-quickview`,
    `spotlight` and `msstylebox` routes return `{"success":true,"data":{"html":"..."}}` — pre-rendered
    HTML fragments for the page UI rather than structured data.
  contact:
    name: AMG Wealth Platform
    url: https://wealth.amg.com/contactus/
  termsOfService: https://wealth.amg.com/terms-of-use/
  x-derived-by: API Evangelist enrichment pipeline
  x-derived-from: https://wealth.amg.com/wp-json/amgfundsdata/v1
  x-derived-on: '2026-08-30'
  x-publication-status: undocumented-site-backing-api
servers:
  - url: https://wealth.amg.com/wp-json
    description: AMG Wealth Platform WordPress REST root
tags:
  - name: Products
    description: Fund and product listings, tables and cross-reference data.
  - name: Fund Detail
    description: Per-ticker fund detail panels rendered as HTML fragments.
  - name: Separately Managed Accounts
    description: SMA strategy detail panels.
paths:
  /amgfundsdata/v1:
    get:
      operationId: getFundsDataNamespace
      summary: Get the amgfundsdata/v1 namespace index
      description: Returns the WordPress REST namespace index listing every route, method and argument in the amgfundsdata/v1 namespace.
      tags: [Products]
      parameters:
        - name: context
          in: query
          required: false
          description: WordPress REST response context.
          schema:
            type: string
            default: view
      responses:
        '200':
          description: Namespace route table.
          content:
            application/json:
              schema:
                type: object
                properties:
                  namespace:
                    type: string
                  routes:
                    type: object
  /amgfundsdata/v1/products/funds:
    get:
      operationId: listFunds
      summary: List AMG funds
      description: Returns the flat list of AMG Funds share classes with fund identifier, display name, ticker and the WordPress product id used by the other detail routes.
      tags: [Products]
      responses:
        '200':
          description: Array of fund share classes.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/FundSummary'
              example:
                - fund_id: 10QH
                  fund_name: AMG BBH Asset-Backed Credit Fund (BBAIX)
                  ticker: BBAIX
                  wp_product_id: 24266
  /amgfundsdata/v1/products-data:
    get:
      operationId: getProductsData
      summary: Get the full products dataset
      description: >-
        Returns the complete product dataset used to build the product finder — a ticker-to-fund map,
        the asset class list, the table row data, product lists keyed by fund id and by ticker, and the
        fund sub-type vocabulary. Observed at roughly 2.4 MB uncompressed.
      tags: [Products]
      responses:
        '200':
          description: Aggregate product dataset.
          content:
            application/json:
              schema:
                type: object
                properties:
                  api_ticker_map:
                    type: object
                    description: Map of ticker to fund display name.
                    additionalProperties:
                      type: string
                  asset_classes:
                    type: array
                    items:
                      type: string
                  table_rows_data:
                    type: array
                    items:
                      $ref: '#/components/schemas/ProductRow'
                  products_list_data:
                    type: array
                    items:
                      $ref: '#/components/schemas/ProductRow'
                  products_list_by_funds:
                    type: object
                    description: Product rows keyed by fund_id.
                  products_ticker_data:
                    type: object
                    description: Product rows keyed by ticker.
                  products:
                    type: array
                    items:
                      type: object
                  fund_sub_type:
                    type: array
                    items:
                      type: string
  /amgfundsdata/v1/products-table:
    get:
      operationId: getProductsTable
      summary: Get the rendered products table dataset
      description: Returns the product finder table payload — the same rows as products-data plus pre-rendered HTML cells for fund name, share class and quick-view controls.
      tags: [Products]
      responses:
        '200':
          description: Table payload.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/ProductRow'
  /amgfundsdata/v1/products/quickview/{ticker}:
    get:
      operationId: getFundQuickView
      summary: Get the quick-view panel for a fund
      description: Returns the pre-rendered HTML quick-view panel for a ticker, as used by the product finder's expand control.
      tags: [Products]
      parameters:
        - $ref: '#/components/parameters/Ticker'
      responses:
        '200':
          description: HTML fragment returned as a JSON string.
          content:
            application/json:
              schema:
                type: string
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/products/morningstar-quickview/{ticker}:
    get:
      operationId: getMorningstarQuickView
      summary: Get the Morningstar quick-view modal for a fund
      description: Returns the pre-rendered Morningstar rating modal for a ticker.
      tags: [Products]
      parameters:
        - $ref: '#/components/parameters/Ticker'
      responses:
        '200':
          description: Wrapped HTML fragment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HtmlEnvelope'
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/products/morningstarstlyeboxdata/{fundtype}/{wpid}/{style}:
    get:
      operationId: getMorningstarStyleBoxData
      summary: Get Morningstar style box data
      description: Returns the Morningstar style box payload for a product, keyed by fund type, WordPress product id and style. Route name is spelled `morningstarstlyeboxdata` by the provider.
      tags: [Products]
      parameters:
        - name: fundtype
          in: path
          required: true
          schema:
            type: string
        - name: wpid
          in: path
          required: true
          description: WordPress product id, as returned by listFunds.
          schema:
            type: string
        - name: style
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Style box payload.
          content:
            application/json:
              schema:
                type: object
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/products/msstylebox/{wpid}/{style}/{fundtype}:
    get:
      operationId: getMorningstarStyleBox
      summary: Get the Morningstar style box panel
      description: Returns the rendered Morningstar style box panel for a product.
      tags: [Products]
      parameters:
        - name: wpid
          in: path
          required: true
          schema:
            type: string
        - name: style
          in: path
          required: true
          schema:
            type: string
        - name: fundtype
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Style box panel.
          content:
            application/json:
              schema:
                type: object
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/product/growthdata/{ticker}/{start}/{end}:
    get:
      operationId: getFundGrowthData
      summary: Get growth-of-investment data for a fund
      description: Returns the growth-of-investment series for a ticker between a start and end boundary, as charted on the fund performance panel.
      tags: [Fund Detail]
      parameters:
        - $ref: '#/components/parameters/Ticker'
        - name: start
          in: path
          required: true
          description: Series start boundary.
          schema:
            type: string
        - name: end
          in: path
          required: true
          description: Series end boundary.
          schema:
            type: string
      responses:
        '200':
          description: Growth series payload.
          content:
            application/json:
              schema:
                type: object
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/spotlight/{ticker}/{tickerslug}/{rand}:
    get:
      operationId: getFundSpotlight
      summary: Get the spotlight panel for a fund
      description: Returns the spotlight promotional panel for a ticker. The third segment is a cache-busting value supplied by the page.
      tags: [Products]
      parameters:
        - $ref: '#/components/parameters/Ticker'
        - name: tickerslug
          in: path
          required: true
          schema:
            type: string
        - name: rand
          in: path
          required: true
          description: Cache-busting value.
          schema:
            type: string
      responses:
        '200':
          description: Spotlight payload.
          content:
            application/json:
              schema:
                type: object
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/fund-detail/{ticker}/overview:
    get:
      operationId: getFundOverview
      summary: Get the fund overview panel
      description: Returns the fund overview panel for a ticker — objective, share class selector, key facts and manager attribution — as a rendered HTML fragment inside a success envelope.
      tags: [Fund Detail]
      parameters:
        - $ref: '#/components/parameters/Ticker'
      responses:
        '200':
          description: Overview panel.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HtmlEnvelope'
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/fund-detail/{ticker}/performance:
    get:
      operationId: getFundPerformance
      summary: Get the fund performance panel
      description: Returns the performance panel for a ticker — trailing and calendar-year returns and the performance charts — as a rendered HTML fragment inside a success envelope.
      tags: [Fund Detail]
      parameters:
        - $ref: '#/components/parameters/Ticker'
      responses:
        '200':
          description: Performance panel.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HtmlEnvelope'
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/fund-detail/{ticker}/portfolio:
    get:
      operationId: getFundPortfolio
      summary: Get the fund portfolio panel
      description: Returns the portfolio composition panel for a ticker — holdings, sector and allocation breakdowns — as a rendered HTML fragment inside a success envelope.
      tags: [Fund Detail]
      parameters:
        - $ref: '#/components/parameters/Ticker'
      responses:
        '200':
          description: Portfolio panel.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HtmlEnvelope'
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/fund-detail/{ticker}/boutique:
    get:
      operationId: getFundBoutique
      summary: Get the boutique manager panel for a fund
      description: Returns the panel describing the AMG Affiliate boutique that manages the fund.
      tags: [Fund Detail]
      parameters:
        - $ref: '#/components/parameters/Ticker'
      responses:
        '200':
          description: Boutique panel.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HtmlEnvelope'
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/fund-detail/{ticker}/modal/{modal_type}:
    get:
      operationId: getFundDetailModal
      summary: Get a fund detail modal
      description: Returns a named modal fragment for a fund detail page — for example a disclosure or definition modal.
      tags: [Fund Detail]
      parameters:
        - $ref: '#/components/parameters/Ticker'
        - name: modal_type
          in: path
          required: true
          description: Modal identifier.
          schema:
            type: string
      responses:
        '200':
          description: Modal panel.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HtmlEnvelope'
        '404':
          $ref: '#/components/responses/NotFound'
  /amgfundsdata/v1/sma-detail/{ticker}/performance:
    get:
      operationId: getSmaPerformance
      summary: Get the SMA strategy performance panel
      description: Returns the performance panel for a separately managed account strategy. Returns a 404 with code `sma_not_found` when the identifier is not an SMA strategy.
      tags: [Separately Managed Accounts]
      parameters:
        - $ref: '#/components/parameters/Ticker'
      responses:
        '200':
          description: SMA performance panel.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HtmlEnvelope'
        '404':
          description: No SMA page for this identifier.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                code: sma_not_found
                message: SMA page not found
                data:
                  status: 404
components:
  parameters:
    Ticker:
      name: ticker
      in: path
      required: true
      description: Fund or share class ticker, e.g. BBAIX.
      schema:
        type: string
        pattern: '^[a-zA-Z0-9-]+$'
  responses:
    NotFound:
      description: No route or no record matched.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            code: rest_no_route
            message: No route was found matching the URL and request method.
            data:
              status: 404
  schemas:
    FundSummary:
      type: object
      description: A single AMG fund share class.
      properties:
        fund_id:
          type: string
          description: AMG internal fund identifier, shared across share classes of the same fund.
        fund_name:
          type: string
          description: Display name including ticker.
        ticker:
          type: string
        wp_product_id:
          type: integer
          description: WordPress product id, used as the wpid path parameter on the style box routes.
    ProductRow:
      type: object
      description: A product finder row. Fields observed on live responses; the provider publishes no schema.
      properties:
        ticker:
          type: string
        fund_id:
          type: string
        wp_product_id:
          type: integer
        fund_name:
          type: string
        b_fund_name:
          type: string
        fund_type:
          type: string
        fund_sub_type_1:
          type: string
        fund_sub_type_2:
          type: string
        asset_class:
          type: string
        inception_date:
          type: string
        manager_id:
          type: integer
        manager_name:
          type: string
          description: The AMG Affiliate boutique managing the strategy.
        month_end_date:
          type: string
        nav:
          type: number
        perf_1yr:
          type: string
        perf_3yr:
          type: string
        perf_5yr:
          type: string
        perf_10yr:
          type: string
        perf_15yr:
          type: string
        perf_20yr:
          type: string
        inception:
          type: string
        rating_overall:
          type: string
          description: Morningstar overall rating, or "Not Rated".
        share_class:
          type: string
        share_class_list:
          type: array
          items:
            type: object
    HtmlEnvelope:
      type: object
      description: The success envelope used by the panel routes.
      properties:
        success:
          type: boolean
        data:
          type: object
          properties:
            html:
              type: string
              description: Pre-rendered HTML fragment.
    Error:
      type: object
      description: The WordPress REST error envelope returned by this API. Not RFC 9457.
      properties:
        code:
          type: string
        message:
          type: string
        data:
          type: object
          properties:
            status:
              type: integer