Massive (formerly Polygon.io) Fable API

The fable API from Massive (formerly Polygon.io) — 2 operation(s) for fable.

Operations 2

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /consumer-spending/eu/v1/merchant-aggregates Get European consumer spending by merchant · Get consumer spending eu v1 merchant aggregates #
Ask an LLM
“How much are European consumers spending at a given merchant each day?”
“Can I split card spending at a merchant by channel or consumer country?”
Tell an agent
Get daily consumer spending aggregates for merchant {name}.
Show spending at merchants owned by {parent_name} since {transaction_date_gte}.
GET /consumer-spending/eu/v1/merchant-hierarchy Map European merchants to parent companies · Get consumer spending eu v1 merchant hierarchy #
Ask an LLM
“Which parent company and stock ticker does a European merchant belong to?”
“What merchants in the spending panel roll up to a listed company?”
Tell an agent
Look up the merchant hierarchy for {lookup_name}.
List merchants mapped to ticker {ticker}.

Documentation

Specifications

Schemas & Data

Other Resources

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/massive-com:massive-com-fable-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

massive-com-fable-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  description: The future of fintech.
  title: Polygon Fable API
  version: 1.0.0
servers:
- description: Polygon Platform API
  url: https://api.polygon.io
- description: Polygon Platform API (Staging)
  url: https://api.staging.polygon.io
security:
- apiKey: []
tags:


# --- truncated at 32 KB (36 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/massive-com/refs/heads/main/openapi/massive-com-fable-api-openapi.yml