curl --request GET \
--url https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events', 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://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
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://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events"
req, _ := http.NewRequest("GET", 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.get("https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"session": {
"session_policy": {
"version": 1,
"mode": "standard",
"components": {
"memoryRead": true,
"memoryWrite": true,
"skills": true,
"inheritedInstructions": true,
"integrations": true,
"secretInjection": true
},
"workspaceOwnership": "ara-managed"
},
"benchmark_profile": "coding-benchmark-v1",
"session_id": "<string>",
"status": "running",
"url": "<string>",
"created_at": "2023-11-07T05:31:56Z",
"started_at": "2023-11-07T05:31:56Z",
"finished_at": "2023-11-07T05:31:56Z",
"title": "<string>",
"prompt": "<string>",
"prompt_truncated": true,
"prompt_bytes": 123,
"tags": [
"<string>"
],
"project_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"repo": "<string>",
"provider": "github",
"model": "<string>",
"reasoning_effort": "<string>",
"hands_mode": "adaptive",
"branch": "<string>",
"pr_url": "<string>",
"pr_title": "<string>",
"result_summary": "<string>",
"outcome": "success",
"result": "<unknown>",
"error_class": "<string>",
"error_message": "<string>",
"failure_diagnostics": {
"failure_stage": "<string>",
"reason_code": "<string>",
"root_cause": "<string>"
},
"failure_stage": "<string>",
"reason_code": "<string>",
"root_cause": "<string>",
"diagnostic_message": "<string>",
"duration_ms": 123,
"cost_usd": 123,
"usage": {
"input_tokens": 123,
"output_tokens": 123,
"total_tokens": 123
},
"context": {
"tokens": 123,
"window": 123,
"percent": 123
},
"is_archived": true,
"session_type": "session",
"source_session_id": "<string>",
"read_only": true,
"repos": [
"<string>"
],
"change_requests": [
{
"url": "<string>",
"status": "active"
}
]
},
"items": [
{
"seq": 123,
"id": "<string>",
"type": "<string>",
"text": "<string>",
"data": {
"stream_key": "<string>",
"item_id": "<string>",
"tool": "<string>",
"name": "<string>",
"tool_use_id": "<string>",
"stage": "<string>",
"is_error": true
},
"created_at": "2023-11-07T05:31:56Z"
}
],
"next_seq": 123
}{
"error": "session_not_found"
}List live session events
Poll incremental agent activity. Pass the previous next_seq as after_seq to receive only newer events. sessions:read returns status events with null text/data. An organization owner/admin may add sessions:debug for the full diagnostic projection, including reasoning and tool results.
sessions:read or sessions:debugcurl --request GET \
--url https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events', 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://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
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://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events"
req, _ := http.NewRequest("GET", 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.get("https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.reasonmachines.ai/v3/organizations/{orgId}/sessions/{sessionId}/events")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"session": {
"session_policy": {
"version": 1,
"mode": "standard",
"components": {
"memoryRead": true,
"memoryWrite": true,
"skills": true,
"inheritedInstructions": true,
"integrations": true,
"secretInjection": true
},
"workspaceOwnership": "ara-managed"
},
"benchmark_profile": "coding-benchmark-v1",
"session_id": "<string>",
"status": "running",
"url": "<string>",
"created_at": "2023-11-07T05:31:56Z",
"started_at": "2023-11-07T05:31:56Z",
"finished_at": "2023-11-07T05:31:56Z",
"title": "<string>",
"prompt": "<string>",
"prompt_truncated": true,
"prompt_bytes": 123,
"tags": [
"<string>"
],
"project_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"repo": "<string>",
"provider": "github",
"model": "<string>",
"reasoning_effort": "<string>",
"hands_mode": "adaptive",
"branch": "<string>",
"pr_url": "<string>",
"pr_title": "<string>",
"result_summary": "<string>",
"outcome": "success",
"result": "<unknown>",
"error_class": "<string>",
"error_message": "<string>",
"failure_diagnostics": {
"failure_stage": "<string>",
"reason_code": "<string>",
"root_cause": "<string>"
},
"failure_stage": "<string>",
"reason_code": "<string>",
"root_cause": "<string>",
"diagnostic_message": "<string>",
"duration_ms": 123,
"cost_usd": 123,
"usage": {
"input_tokens": 123,
"output_tokens": 123,
"total_tokens": 123
},
"context": {
"tokens": 123,
"window": 123,
"percent": 123
},
"is_archived": true,
"session_type": "session",
"source_session_id": "<string>",
"read_only": true,
"repos": [
"<string>"
],
"change_requests": [
{
"url": "<string>",
"status": "active"
}
]
},
"items": [
{
"seq": 123,
"id": "<string>",
"type": "<string>",
"text": "<string>",
"data": {
"stream_key": "<string>",
"item_id": "<string>",
"tool": "<string>",
"name": "<string>",
"tool_use_id": "<string>",
"stage": "<string>",
"is_error": true
},
"created_at": "2023-11-07T05:31:56Z"
}
],
"next_seq": 123
}{
"error": "session_not_found"
}Authorizations
Your Reason API key from Settings > API. New keys use reason_; legacy ara_ keys remain accepted. Keys are capability-scoped: run, mcp:read, mcp:write, secrets:read, secrets:write, sessions:read, sessions:debug, knowledge:read, memory:read, memory:write, skills:read, skills:write, repos:read, repos:write, reviews:read, reviews:write, deployment:read, analytics:read, org:read, org:write, attachments:read, attachments:write, guardrails:read, guardrails:write, automations:read, automations:write, agent_auth:read. mcp:write manages MCP server configuration only; it does not authorize remote MCP-tool execution. sessions:debug is privileged: it expands diagnostic session events only for organization owners/admins.
Path Parameters
Organization id or slug. Resolve it with GET /v3/self.
The session id.
Query Parameters
Return only events whose monotonic sequence number is higher than this value. Use -1 to start before event zero.
Maximum events to return (default 200, max 1000).
Response
The current session plus a bounded page of live events.
Current lifecycle snapshot. Without sessions:debug, includes Session identity, status, timestamps, resolved session_policy, error_class, duration_ms, cost_usd and usage; excludes prompt, result content and diagnostic context.
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