AWeber

AWeber Custom Fields API

The Custom Fields API from AWeber — 5 operations for creating, reading, renaming and deleting the custom subscriber fields defined on a list.

GitHub OpenAPI

Operations 5

GET /accounts/{accountId}/lists/{listId}/custom_fields Get custom fields #
POST /accounts/{accountId}/lists/{listId}/custom_fields Add custom field #
GET /accounts/{accountId}/lists/{listId}/custom_fields/{customFieldId} Get custom field #
PATCH /accounts/{accountId}/lists/{listId}/custom_fields/{customFieldId} Update custom field #
DELETE /accounts/{accountId}/lists/{listId}/custom_fields/{customFieldId} Delete custom field #

Documentation

📖
Documentation
https://api.aweber.com/
📖
APIReference
https://api.aweber.com/
📖
Authentication
https://api.aweber.com/#tag/OAuth-2.0-Overview
📖
GettingStarted
https://api.aweber.com/#tag/Getting-Started

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/aweber/refs/heads/main/openapi/aweber-custom-fields-api-openapi.yml

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/aweber-custom-fields-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.

GitHub Google LinkedIn

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

OpenAPI Specification

aweber-custom-fields-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: AWeber Custom Fields API
  description: 'We are constantly working to improve this documentation. If you have

    feedback and questions, please contact the AWeber API team at

    api@aweber.com.


    The AWeber API is a REST API that uses the OAuth 2.0 authentication model. We also offer webhooks.


    Please see the below resources for further information:

    - Terms of Service

    - Showcasing an Integration

    - Knowledge Base

    - API Status Page'
  version: '1.0'
servers:
- url: https://api.aweber.com/1.0
  description: v1 API endpoints
tags:


# --- truncated at 32 KB (42 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/aweber/refs/heads/main/openapi/aweber-custom-fields-api-openapi.yml