4chan Threadlist API
Per-board summary list of every live thread (id, last-modified, reply count) grouped by index page.
4chan Threadlist API is one of 6 APIs that 4chan publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Threadlist. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and a support channel.
This API exposes 1 operation across 1 path, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 2026-05-28.
Requests are made against 2 base URLs: https://a.4cdn.org, http://a.4cdn.org.
Metadata
The identity and technical contract details declared by the specification.
Paths & Operations 1
Across 1 path, the API surfaces 1 operation — 1 GET. Each is listed below with its method, path, parameters, and response codes.
Per-board summary list of every live thread (id, last-modified, reply count) grouped by index page.
Schemas 3
The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are ThreadlistEntry (3 properties), ThreadlistPage (2 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from 4chan 5
Other APIs 4chan publishes across the network.
This is an independent, third-party profile of 4chan Threadlist API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
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