Cancel a session
curl --request DELETE \
--url https://agp.eu.hcompany.ai/api/v2/sessions/{id} \
--header 'Authorization: Bearer <token>'import requests
url = "https://agp.eu.hcompany.ai/api/v2/sessions/{id}"
headers = {"Authorization": "Bearer <token>"}
response = requests.delete(url, headers=headers)
print(response.text)const options = {method: 'DELETE', headers: {Authorization: 'Bearer <token>'}};
fetch('https://agp.eu.hcompany.ai/api/v2/sessions/{id}', 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://agp.eu.hcompany.ai/api/v2/sessions/{id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "DELETE",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://agp.eu.hcompany.ai/api/v2/sessions/{id}"
req, _ := http.NewRequest("DELETE", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.delete("https://agp.eu.hcompany.ai/api/v2/sessions/{id}")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://agp.eu.hcompany.ai/api/v2/sessions/{id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Delete.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_bodySessions
Cancel a session
Stop a running session.
DELETE
/
api
/
v2
/
sessions
/
{id}
Cancel a session
curl --request DELETE \
--url https://agp.eu.hcompany.ai/api/v2/sessions/{id} \
--header 'Authorization: Bearer <token>'import requests
url = "https://agp.eu.hcompany.ai/api/v2/sessions/{id}"
headers = {"Authorization": "Bearer <token>"}
response = requests.delete(url, headers=headers)
print(response.text)const options = {method: 'DELETE', headers: {Authorization: 'Bearer <token>'}};
fetch('https://agp.eu.hcompany.ai/api/v2/sessions/{id}', 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://agp.eu.hcompany.ai/api/v2/sessions/{id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "DELETE",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://agp.eu.hcompany.ai/api/v2/sessions/{id}"
req, _ := http.NewRequest("DELETE", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.delete("https://agp.eu.hcompany.ai/api/v2/sessions/{id}")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://agp.eu.hcompany.ai/api/v2/sessions/{id}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Delete.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_bodyCancels a session that is still active. The agent is stopped and the session transitions to
Use cancel when:
interrupted status. Cancelling a queued session dequeues it immediately, without it ever starting, and cancelling a session that already finished is a harmless no-op. Cancellation can’t be undone: use pause if you want to resume later.
Returns 204 No Content on success.
Path parameters
string
required
The session ID to cancel.
Examples
curl -X DELETE https://agp.eu.hcompany.ai/api/v2/sessions/$SESSION_ID \
-H "Authorization: Bearer $HAI_API_KEY"
from hai_agents import Client
client = Client()
client.sessions.cancel_session(session_id)
import { HaiAgentsClient } from "hai-agents";
const client = new HaiAgentsClient();
await client.sessions.cancelSession({ id: sessionId });
hai sessions cancel "$SESSION_ID" --yes
When to cancel vs. pause
| Action | Effect | Can resume? | Frees quota? |
|---|---|---|---|
Cancel (DELETE) | Stops the agent, terminal state | No | Yes |
Pause (POST /pause) | Halts the agent, preserves state | Yes | No |
- The task is no longer needed
- You want to free a concurrency slot immediately
- The agent is stuck or producing unhelpful output
- You want to review progress before continuing
- You need to provide input later but not right now
Errors
| Status | Cause |
|---|---|
404 | Session not found, or you don’t have access. |
Last modified on September 11, 2026
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