LINKEDIN MESSAGING API

Send and receive LinkedIn messages via one simple API

A REST API for DMs, group messages, conversation threads and typing indicators. Everything your product needs to act like a human on LinkedIn.

Get API KeyRead API Docs

Everything you can do with the Messaging API

Send 1:1 and group messages, stream typing indicators, read the inbox and manage conversation state.

POST/message

Send Message

Send a 1:1 LinkedIn message on behalf of a connected account with optional attachments.

View API docs →
POST/messaging/send-with-typing

Send Message With Typing

Show a natural typing indicator before the message lands — mirrors real user behaviour.

View API docs →
POST/messaging/typing-indicator

Trigger Typing Indicator

Send a standalone typing event — useful for human-in-the-loop workflows.

View API docs →
GET/messaging/recent-messages

Get Recent Messages

List the latest inbox messages across all conversations for a connected account.

View API docs →
GET/messaging/conversation-details

Get Conversation Details

Full conversation thread with all messages, participants and read state.

View API docs →
POST/messaging/mark-seen

Mark Conversation Seen

Mark a conversation as read — mirrors the LinkedIn UI behaviour.

View API docs →
POST/messaging/mark-all-read

Mark All Messages Read

Clear the unread badge across every conversation for the account.

View API docs →
POST/messaging/send-group

Send Group Message

Post a message to a LinkedIn group the connected account belongs to.

View API docs →

Send a message in seconds

One POST request — authenticated with your API key and a connected account ID.

curl -X POST https://api.connectsafely.ai/v1/messages \
  -H "Authorization: Bearer $CONNECTSAFELY_API_KEY" \
  -H "X-Account-Id: $ACCOUNT_ID" \
  -H "Content-Type: application/json" \
  -d '{
    "recipientId": "urn:li:person:ACoAA...",
    "text": "Hey Sarah — loved your post on RAG evals."
  }'

Who builds on this API

The Messaging API is the backbone of outreach tools, unified inboxes and LinkedIn-aware AI agents.

Outreach & SDR tools

Power multi-touch LinkedIn sequences with typing indicators for a natural, human cadence.

Unified inbox products

Pull conversations, mark them read, and push replies — everything a multi-channel inbox needs.

AI agents on LinkedIn

Give an autonomous agent a safe interface to read, reply and manage LinkedIn conversations.

Start messaging on LinkedIn via API

Get an API key in under two minutes. Pay only for what you send.

Get API KeyRead API Docs