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Activitypub

ActivityPub Outbox API

Publish activities from an actor and read their history

Provider Profile APIs.io OpenAPI GitHub

This API exposes 2 operations across 1 path, and defines 9 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against a single base URL, https://{domain}.

2 operations 1 paths 9 schemas 1 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Server
https://{domain}
Authentication
HTTP Bearer, API Key
Contact
W3C Social Web Working Group
License
W3C Document License
Resource Areas
1

Authentication & Security 2

ActivityPub Outbox API declares 2 security schemes for authenticating requests. It accepts HTTP bearer tokens (BearerAuth). An API key is passed in the header as Signature (HTTPSignature).

  • BearerAuth — OAuth 2.0 bearer token for client-to-server authentication
  • HTTPSignature — HTTP Signatures (draft-cavage-http-signatures) for server-to-server authentication. The Signature header contains keyId, algorithm, headers, and signature fiel…

Paths & Operations 2

Across 1 path, the API surfaces 2 operations — 1 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Outbox 2

Publish activities from an actor and read their history

GET
/users/{username}/outbox
Read actor outbox
getOutbox 2 params → 200404
POST
/users/{username}/outbox
Publish activity (client-to-server)
postToOutbox 1 param body → 201400401

Schemas 9

The contract defines 9 schemas that model the data the API accepts and returns. The most detailed are ASObject (21 properties), Actor (18 properties), Activity (15 properties), Collection (8 properties). Each schema is shown below with its type and property counts.

ASObject
object
Base ActivityStreams 2.0 Object type. Encompasses Note, Article, Image, Video, Audio, Document, Page, Event, Place, Profile, Relationship, Tombstone, and Quest…
21 properties
Collection
object
An ActivityStreams 2.0 Collection of Objects or Links
8 properties 2 required
Actor
object
An ActivityPub Actor object representing an entity capable of performing activities. Actor types include Person, Application, Group, Organization, and Service.
18 properties 5 required
OrderedCollection
object
An ActivityStreams 2.0 OrderedCollection with temporally ordered items
8 properties 2 required
Error
object
2 properties
ASContext
ActivityStreams 2.0 JSON-LD context
Activity
object
An ActivityStreams 2.0 Activity describing an action performed by an actor. Common activity types: Create, Update, Delete, Follow, Accept, Reject, Announce, Li…
15 properties 3 required
Link
object
An ActivityStreams 2.0 Link, a qualified reference to another resource
6 properties 2 required
ImageObject
object
An ActivityStreams 2.0 Image object
5 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

activitypub-outbox-api-openapi.yml Raw ↑
#Outbox
← Back to A APIs
API Details
ID
activitypub:activitypub-outbox-api
Server
https://{domain}
Provider
Activitypub
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