curl --request POST \
--url https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--header 'Team-SID: <api-key>' \
--data '
{
"linkedin_account_sid": "<string>",
"text": "<string>",
"linkedin_conversation_sid": "<string>",
"ln_id": "<string>",
"sn_id": "<string>",
"attachments": [
{
"name": "<string>",
"path": "<string>",
"size": 1
}
]
}
'import requests
url = "https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav"
payload = {
"linkedin_account_sid": "<string>",
"text": "<string>",
"linkedin_conversation_sid": "<string>",
"ln_id": "<string>",
"sn_id": "<string>",
"attachments": [
{
"name": "<string>",
"path": "<string>",
"size": 1
}
]
}
headers = {
"Authorization": "Bearer <token>",
"Team-SID": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {
Authorization: 'Bearer <token>',
'Team-SID': '<api-key>',
'Content-Type': 'application/json'
},
body: JSON.stringify({
linkedin_account_sid: '<string>',
text: '<string>',
linkedin_conversation_sid: '<string>',
ln_id: '<string>',
sn_id: '<string>',
attachments: [{name: '<string>', path: '<string>', size: 1}]
})
};
fetch('https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'linkedin_account_sid' => '<string>',
'text' => '<string>',
'linkedin_conversation_sid' => '<string>',
'ln_id' => '<string>',
'sn_id' => '<string>',
'attachments' => [
[
'name' => '<string>',
'path' => '<string>',
'size' => 1
]
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json",
"Team-SID: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav"
payload := strings.NewReader("{\n \"linkedin_account_sid\": \"<string>\",\n \"text\": \"<string>\",\n \"linkedin_conversation_sid\": \"<string>\",\n \"ln_id\": \"<string>\",\n \"sn_id\": \"<string>\",\n \"attachments\": [\n {\n \"name\": \"<string>\",\n \"path\": \"<string>\",\n \"size\": 1\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Team-SID", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav")
.header("Authorization", "Bearer <token>")
.header("Team-SID", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"linkedin_account_sid\": \"<string>\",\n \"text\": \"<string>\",\n \"linkedin_conversation_sid\": \"<string>\",\n \"ln_id\": \"<string>\",\n \"sn_id\": \"<string>\",\n \"attachments\": [\n {\n \"name\": \"<string>\",\n \"path\": \"<string>\",\n \"size\": 1\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Team-SID"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"linkedin_account_sid\": \"<string>\",\n \"text\": \"<string>\",\n \"linkedin_conversation_sid\": \"<string>\",\n \"ln_id\": \"<string>\",\n \"sn_id\": \"<string>\",\n \"attachments\": [\n {\n \"name\": \"<string>\",\n \"path\": \"<string>\",\n \"size\": 1\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"success": true,
"operation": "action",
"action": "<string>",
"item": {
"sid": "<string>",
"team_sid": "<string>",
"linkedin_account_sid": "<string>",
"linkedin_conversation_sid": "<string>",
"ln_member_id": "<string>",
"ln_id": "<string>",
"sn_id": "<string>",
"nickname": "<string>",
"subject": "<string>",
"text": "<string>",
"attachments": [
{
"id": "<string>",
"urn": "<string>",
"name": "<string>",
"content_type": "<string>",
"content_url": "<string>",
"file_byte_size": 123,
"path": "<string>",
"size": 123
}
],
"reactions": [
{
"emoji": "<string>",
"count": 123,
"is_viewer_reacted": true,
"first_reacted_at": "<string>"
}
],
"message_hash": "<string>",
"sent_at": "<string>",
"custom_content": {},
"created_at": "<string>",
"updated_at": "<string>",
"deleted_at": "<string>"
},
"result": {},
"meta": {
"trace_id": "<string>",
"span_id": "<string>",
"timestamp": "<string>",
"duration_ms": 1,
"debug_url": "<string>"
},
"credits": {
"charged": 1,
"balance_after": 1
}
}{
"success": false,
"error": {
"message": "<string>",
"recoverable": true,
"suggestion": "<string>",
"field_errors": {},
"blockers": [
{
"type": "<string>",
"description": "<string>",
"entity_sid": "<string>",
"resolution": "<string>",
"resolution_hint": "<string>",
"count": 123
}
],
"context": {}
},
"meta": {
"trace_id": "<string>",
"span_id": "<string>",
"timestamp": "<string>",
"duration_ms": 1,
"debug_url": "<string>"
}
}{
"success": false,
"error": {
"message": "<string>",
"recoverable": true,
"suggestion": "<string>",
"field_errors": {},
"blockers": [
{
"type": "<string>",
"description": "<string>",
"entity_sid": "<string>",
"resolution": "<string>",
"resolution_hint": "<string>",
"count": 123
}
],
"context": {}
},
"meta": {
"trace_id": "<string>",
"span_id": "<string>",
"timestamp": "<string>",
"duration_ms": 1,
"debug_url": "<string>"
}
}Send Sales Navigator message
Send one Sales Navigator message (outward action): continue an existing SN thread via linkedin_conversation_sid (messenger_type=sales_navigator), or open a new SN thread via ln_id / sn_id. Body ≤ 8000. Guards: in-flight dedup, send_inmails daily cap, SN-seat guard, SN surface guard. Fire-on-success. When NOT: basic-messenger threads → send_linkedin_message / send_linkedin_voice_message; cold InMail outside SN → send_linkedin_inmail; account without an SN seat is rejected, so check linkedin-accounts.has_sn first.
Contract:
- MCP tool
send_linkedin_sales_nav_message, registry packagemcp.linkedin/linkedin_messages, mountlinkedin.messaging. - Operation
action, response envelopeaction. - Flags: dangerous: the MCP layer gates it behind a preview/commit token, and the effect cannot be undone through this API.
curl --request POST \
--url https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--header 'Team-SID: <api-key>' \
--data '
{
"linkedin_account_sid": "<string>",
"text": "<string>",
"linkedin_conversation_sid": "<string>",
"ln_id": "<string>",
"sn_id": "<string>",
"attachments": [
{
"name": "<string>",
"path": "<string>",
"size": 1
}
]
}
'import requests
url = "https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav"
payload = {
"linkedin_account_sid": "<string>",
"text": "<string>",
"linkedin_conversation_sid": "<string>",
"ln_id": "<string>",
"sn_id": "<string>",
"attachments": [
{
"name": "<string>",
"path": "<string>",
"size": 1
}
]
}
headers = {
"Authorization": "Bearer <token>",
"Team-SID": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {
Authorization: 'Bearer <token>',
'Team-SID': '<api-key>',
'Content-Type': 'application/json'
},
body: JSON.stringify({
linkedin_account_sid: '<string>',
text: '<string>',
linkedin_conversation_sid: '<string>',
ln_id: '<string>',
sn_id: '<string>',
attachments: [{name: '<string>', path: '<string>', size: 1}]
})
};
fetch('https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'linkedin_account_sid' => '<string>',
'text' => '<string>',
'linkedin_conversation_sid' => '<string>',
'ln_id' => '<string>',
'sn_id' => '<string>',
'attachments' => [
[
'name' => '<string>',
'path' => '<string>',
'size' => 1
]
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json",
"Team-SID: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav"
payload := strings.NewReader("{\n \"linkedin_account_sid\": \"<string>\",\n \"text\": \"<string>\",\n \"linkedin_conversation_sid\": \"<string>\",\n \"ln_id\": \"<string>\",\n \"sn_id\": \"<string>\",\n \"attachments\": [\n {\n \"name\": \"<string>\",\n \"path\": \"<string>\",\n \"size\": 1\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Team-SID", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav")
.header("Authorization", "Bearer <token>")
.header("Team-SID", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"linkedin_account_sid\": \"<string>\",\n \"text\": \"<string>\",\n \"linkedin_conversation_sid\": \"<string>\",\n \"ln_id\": \"<string>\",\n \"sn_id\": \"<string>\",\n \"attachments\": [\n {\n \"name\": \"<string>\",\n \"path\": \"<string>\",\n \"size\": 1\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://app.gtm-api.com/linkedin/v4/api/linkedin-messages/send-sales-nav")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Team-SID"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"linkedin_account_sid\": \"<string>\",\n \"text\": \"<string>\",\n \"linkedin_conversation_sid\": \"<string>\",\n \"ln_id\": \"<string>\",\n \"sn_id\": \"<string>\",\n \"attachments\": [\n {\n \"name\": \"<string>\",\n \"path\": \"<string>\",\n \"size\": 1\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"success": true,
"operation": "action",
"action": "<string>",
"item": {
"sid": "<string>",
"team_sid": "<string>",
"linkedin_account_sid": "<string>",
"linkedin_conversation_sid": "<string>",
"ln_member_id": "<string>",
"ln_id": "<string>",
"sn_id": "<string>",
"nickname": "<string>",
"subject": "<string>",
"text": "<string>",
"attachments": [
{
"id": "<string>",
"urn": "<string>",
"name": "<string>",
"content_type": "<string>",
"content_url": "<string>",
"file_byte_size": 123,
"path": "<string>",
"size": 123
}
],
"reactions": [
{
"emoji": "<string>",
"count": 123,
"is_viewer_reacted": true,
"first_reacted_at": "<string>"
}
],
"message_hash": "<string>",
"sent_at": "<string>",
"custom_content": {},
"created_at": "<string>",
"updated_at": "<string>",
"deleted_at": "<string>"
},
"result": {},
"meta": {
"trace_id": "<string>",
"span_id": "<string>",
"timestamp": "<string>",
"duration_ms": 1,
"debug_url": "<string>"
},
"credits": {
"charged": 1,
"balance_after": 1
}
}{
"success": false,
"error": {
"message": "<string>",
"recoverable": true,
"suggestion": "<string>",
"field_errors": {},
"blockers": [
{
"type": "<string>",
"description": "<string>",
"entity_sid": "<string>",
"resolution": "<string>",
"resolution_hint": "<string>",
"count": 123
}
],
"context": {}
},
"meta": {
"trace_id": "<string>",
"span_id": "<string>",
"timestamp": "<string>",
"duration_ms": 1,
"debug_url": "<string>"
}
}{
"success": false,
"error": {
"message": "<string>",
"recoverable": true,
"suggestion": "<string>",
"field_errors": {},
"blockers": [
{
"type": "<string>",
"description": "<string>",
"entity_sid": "<string>",
"resolution": "<string>",
"resolution_hint": "<string>",
"count": 123
}
],
"context": {}
},
"meta": {
"trace_id": "<string>",
"span_id": "<string>",
"timestamp": "<string>",
"duration_ms": 1,
"debug_url": "<string>"
}
}Authorizations
Access token issued by gtm.service.id. Its access_identity claim carries team_sid, actor_sid and actor_type, and that team scope is authoritative.
Team scope for tokens that do not carry one. Ignored when the token already names a team.
Body
Request body of send_linkedin_sales_nav_message.
LinkedIn account sid (ln_ac_…).
18^ln_ac_Message body; 1..8000 chars.
1 - 8000Existing SN thread (messenger_type='sales_navigator'); provide this OR a profile URN.
18^ln_cv_Regular-profile URN for a new SN thread.
128Sales Navigator URN (preferred on the SN surface); interchangeable with ln_id.
64Each .path must be an https:// URL.
Show child attributes
Show child attributes
Response
action success envelope.
true action kebab-case verb; matches the route segment.
Show child attributes
Show child attributes
Show child attributes
Show child attributes
Show child attributes
Show child attributes
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Show child attributes