fourzerotwo-si

fourzerotwo-si Ecb API

ECB Rates: Euro foreign exchange reference rates, ECB policy rates, €STR and euro area inflation.

GitHub OpenAPI

Operations 12

GET /v1/ecb/fx-latest ECB Rates: EUR FX reference rate #
GET /v1/ecb/fx-history ECB Rates: EUR FX history #
GET /v1/ecb/fx-all-latest ECB Rates: All EUR FX rates #
GET /v1/ecb/estr ECB Rates: €STR #
GET /v1/ecb/deposit-rate ECB Rates: Deposit facility rate #
GET /v1/ecb/main-refi-rate ECB Rates: Main refinancing rate #
GET /v1/ecb/marginal-lending-rate ECB Rates: Marginal lending facility rate #
GET /v1/ecb/mortgage-rate ECB Rates: Euro area mortgage rate #
GET /v1/ecb/unemployment ECB Rates: Euro area unemployment #
GET /v1/ecb/yield-2y ECB Rates: Euro area 2-year yield #
GET /v1/ecb/m3-growth ECB Rates: M3 money supply growth #
GET /v1/ecb/yield-10y ECB Rates: Euro area 10-year yield #

Specifications

⚙
OpenAPI
https://artifacts.apis.io/fourzerotwo-si/openapi/fourzerotwo-si-ecb-api-openapi.yml

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OpenAPI Specification

fourzerotwo-si-ecb-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Fourzerotwo Si Ecb API
  version: 1.1.0
  contact:
    url: https://fourzerotwo.si
  description: 'Operations tagged ecb across 2 of this provider''s published API definitions: openapi.json, fourzerotwo-si-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://fourzerotwo.si
tags:
- name: ecb
  description: 'ECB Rates: Euro foreign exchange reference rates, ECB policy rates, €STR and euro area inflation.'
paths:
  /v1/ecb/fx-latest:
    get:
      operationId: ecb__fx_latest
      summary: 'ECB Rates: EUR FX reference rate'
      description: 'Latest euro reference rate against a currency (e.g. USD, GBP, JPY). Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/fx-latest
      parameters:
      - name: currency
        in: query
        required: true
        description: ISO currency code
        schema:
          type: string
          maxLength: 3
        example: USD
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__fx-latest
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/fx-history:
    get:
      operationId: ecb__fx_history
      summary: 'ECB Rates: EUR FX history'
      description: 'Daily euro reference rates for a currency over a date range. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/fx-history
      parameters:
      - name: currency
        in: query
        required: true
        description: ISO currency code
        schema:
          type: string
          maxLength: 3
        example: GBP
      - name: startPeriod
        in: query
        required: true
        description: YYYY-MM-DD
        schema:
          type: string
        example: '2026-09-01'
      - name: endPeriod
        in: query
        required: false
        description: YYYY-MM-DD
        schema:
          type: string
        example: '2026-09-30'
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.002000'
      x-free-tier: free
      x-mcp-tool: ecb__fx-history
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/fx-all-latest:
    get:
      operationId: ecb__fx_all_latest
      summary: 'ECB Rates: All EUR FX rates'
      description: 'Latest euro reference rates for every published currency. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/fx-all-latest
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.002000'
      x-free-tier: free
      x-mcp-tool: ecb__fx-all-latest
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/estr:
    get:
      operationId: ecb__estr
      summary: 'ECB Rates: €STR'
      description: 'Euro short-term rate (€STR), recent daily values. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/estr
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__estr
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/deposit-rate:
    get:
      operationId: ecb__deposit_rate
      summary: 'ECB Rates: Deposit facility rate'
      description: 'ECB deposit facility rate, recent changes. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/deposit-rate
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__deposit-rate
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/main-refi-rate:
    get:
      operationId: ecb__main_refi_rate
      summary: 'ECB Rates: Main refinancing rate'
      description: 'ECB main refinancing operations rate, recent changes. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/main-refi-rate
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__main-refi-rate
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/marginal-lending-rate:
    get:
      operationId: ecb__marginal_lending_rate
      summary: 'ECB Rates: Marginal lending facility rate'
      description: 'ECB marginal lending facility rate, recent changes. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/marginal-lending-rate
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__marginal-lending-rate
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/mortgage-rate:
    get:
      operationId: ecb__mortgage_rate
      summary: 'ECB Rates: Euro area mortgage rate'
      description: 'Composite cost of borrowing for households for house purchase, euro area, %, monthly. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/mortgage-rate
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__mortgage-rate
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/unemployment:
    get:
      operationId: ecb__unemployment
      summary: 'ECB Rates: Euro area unemployment'
      description: 'Euro area unemployment rate, ages 15-74, %, monthly. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/unemployment
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__unemployment
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/yield-2y:
    get:
      operationId: ecb__yield_2y
      summary: 'ECB Rates: Euro area 2-year yield'
      description: 'AAA-rated euro area government bond yield curve, 2-year spot rate, recent days. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/yield-2y
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__yield-2y
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/m3-growth:
    get:
      operationId: ecb__m3_growth
      summary: 'ECB Rates: M3 money supply growth'
      description: 'Euro area monetary aggregate M3, annual growth rate, recent months. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/m3-growth
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__m3-growth
    servers:
    - url: https://fourzerotwo.si
  /v1/ecb/yield-10y:
    get:
      operationId: ecb__yield_10y
      summary: 'ECB Rates: Euro area 10-year yield'
      description: 'AAA-rated euro area government bond yield curve, 10-year spot rate, recent days. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
      tags:
      - ecb
      externalDocs:
        url: https://fourzerotwo.si/apis/ecb/yield-10y
      responses:
        '200':
          description: The data (paid, or free tier).
          content:
            application/json: {}
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '502':
          $ref: '#/components/responses/Error'
      security:
      - {}
      - freeKey: []
      x-price-usd: '0.001000'
      x-free-tier: free
      x-mcp-tool: ecb__yield-10y
    servers:
    - url: https://fourzerotwo.si
components:
  responses:
    PaymentRequired:
      description: x402 payment required. The body (also base64 in the PAYMENT-REQUIRED header) lists accepted payments.
      headers:
        PAYMENT-REQUIRED:
          schema:
            type: string
          description: Base64 JSON x402 v2 PaymentRequired
      content:
        application/json:
          schema:
            type: object
            properties:
              x402Version:
                type: integer
              error:
                type: string
              accepts:
                type: array
                items:
                  type: object
    Error:
      description: 400 = invalid input, 404 = not found at the source, 502 = the source failed. Never charged.
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
              charged:
                type: boolean
  securitySchemes:
    freeKey:
      type: apiKey
      in: header
      name: X-API-Key
      description: Optional free key (fzt_…) for the free tier.
x-refined-from:
- openapi.json
- fourzerotwo-si-openapi.json