Account5

AI Voice Messages1

Analytics - Financial5

Analytics - Summary3

API Keys1

Banking7

Banned Words1

Blocked / Restricted Users2

Chargebacks3

Chat Messages11

Chats10

Client Sessions1

Connect OnlyFans Account6

Data Exports6

Engagement / Messages6

Fans10

Fans - AI Summary6

Following3

Free Trial Links11

Giphy2

Link Tags1

Mass Messaging6

Media5

Media Vault4

Media Vault Lists7

Notifications6

Payouts6

Post Comments7

Post Labels2

Posts9

Profile Content3

Promotions4

Public Profiles2

Queue3

Release Forms7

Saved For Later (Messages)4

Saved For Later (Posts)4

Settings16

Shared Free Trial Links5

Shared Tracking Links5

Smart Link Postbacks5

Smart Links19

Statistics6

Stored Free Trial Links1

Stored Shared Free Trial Links1

Stored Shared Tracking Links1

Stored Tracking Links1

Stories8

Story Highlights7

Subscription Bundles3

Tracking Links11

Transactions1

Usage1

User List Collections11

Users8

Webhooks8

Chat Messages

Changes to Send Message

post/api/{account}/chats/{chat_id}/messages

Oct 17, 2026b3968f1bc1f0 Revision changes
- info
  added the new optional header request parameter Idempotency-Key
- info
  added the new optional request property
- info
  the request property type was generalized from integer to number
- info
  added the non-success response with the status
May 24, 202693a6dfdeeb67 Revision changes
- breaking
  the / request property type changed from string to file[]|string
- breaking
  the / request property type changed from string to file[]|string[]|int
- breaking
  the response property / became nullable for the status
- info
  api tag Chat Messages added
- info
  api tag Chats removed
- info
  added the new optional request property
- info
  added the new optional request property
- info
  added the new optional request property
- info
  added the new optional request property
- info
  added the new optional request property
- info
  request body became optional
- info
  the request property became optional