Read backend deployment identity

curl --request GET \
  --url https://api.reasonmachines.com/v3/deployment \
  --header 'Authorization: Bearer <token>'

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.reasonmachines.com/v3/deployment', 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.com/v3/deployment",
  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.com/v3/deployment"

	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))

}

require 'uri'
require 'net/http'

url = URI("https://api.reasonmachines.com/v3/deployment")

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

{
  "ok": true,
  "service": "github-native-engineer-api",
  "reason_version": "<string>",
  "environment": "<string>",
  "is_pr_environment": true,
  "branch": "<string>",
  "commit_sha": "<string>",
  "artifact_sha": "<string>",
  "deployment_id": "<string>",
  "public_url": "<string>",
  "checked_at": "<string>",
  "hands_worker_compatibility": {
    "schema_version": 1,
    "entrypoint": "<string>",
    "accepted_artifact_sha256": [
      "<string>"
    ],
    "supported_cli_releases": [
      {
        "version": "<string>",
        "artifact_sha256": "<string>"
      }
    ]
  },
  "session_modes": [
    "standard"
  ],
  "workspace_ownerships": [
    "managed"
  ],
  "benchmark_profiles": [
    "coding-benchmark-v1"
  ],
  "runtime_profiles": [
    "runtime/reason-sync-yield-v1"
  ],
  "experimental_runtime_profiles": [
    "runtime/reason-c2-tools-v7"
  ],
  "experimental_runtime_features": [
    "banner"
  ]
}

{
  "error": "missing_bearer",
  "message": "Authorization required"
}

{
  "error": "missing_scope",
  "required_scope": "sessions:read"
}

{
  "error": {
    "type": "rate_limited",
    "message": "This API key exceeded its request-rate limit"
  }
}

GET

deployment

Read backend deployment identity

curl --request GET \
  --url https://api.reasonmachines.com/v3/deployment \
  --header 'Authorization: Bearer <token>'

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.reasonmachines.com/v3/deployment', 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.com/v3/deployment",
  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.com/v3/deployment"

	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))

}

require 'uri'
require 'net/http'

url = URI("https://api.reasonmachines.com/v3/deployment")

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

{
  "ok": true,
  "service": "github-native-engineer-api",
  "reason_version": "<string>",
  "environment": "<string>",
  "is_pr_environment": true,
  "branch": "<string>",
  "commit_sha": "<string>",
  "artifact_sha": "<string>",
  "deployment_id": "<string>",
  "public_url": "<string>",
  "checked_at": "<string>",
  "hands_worker_compatibility": {
    "schema_version": 1,
    "entrypoint": "<string>",
    "accepted_artifact_sha256": [
      "<string>"
    ],
    "supported_cli_releases": [
      {
        "version": "<string>",
        "artifact_sha256": "<string>"
      }
    ]
  },
  "session_modes": [
    "standard"
  ],
  "workspace_ownerships": [
    "managed"
  ],
  "benchmark_profiles": [
    "coding-benchmark-v1"
  ],
  "runtime_profiles": [
    "runtime/reason-sync-yield-v1"
  ],
  "experimental_runtime_profiles": [
    "runtime/reason-c2-tools-v7"
  ],
  "experimental_runtime_features": [
    "banner"
  ]
}

{
  "error": "missing_bearer",
  "message": "Authorization required"
}

{
  "error": "missing_scope",
  "required_scope": "sessions:read"
}

{
  "error": {
    "type": "rate_limited",
    "message": "This API key exceeded its request-rate limit"
  }
}

Authorizations

Authorization

string

header

required

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:read reads sessions, including the assistant, reasoning and tool activity in their events. sessions:debug is privileged: only for organization owners/admins, it expands session events to the full diagnostic projection (diagnostic event kinds, status text and raw event metadata).

Response

The currently running backend release.

boolean

required

service

string

required

Allowed value: "github-native-engineer-api"

reason_version

string

required

The Reason Agent version (X.Y) of the replica that answered: the daily release it belongs to. commit_sha is its exact build. Replicas of two releases can answer during a rolling deploy.

environment

string

required

is_pr_environment

boolean

required

branch

string | null

required

commit_sha

string | null

required

artifact_sha

string | null

required

deployment_id

string | null

required

public_url

string | null

required

checked_at

string

required

hands_worker_compatibility

object

required

Show child attributes

session_modes

enum<string>[]

required

Session modes a create request may name. isolated is retired.

Available options:

standard,

ephemeral

workspace_ownerships

enum<string>[]

required

workspace_ownership values a create request may name. ara-managed is a deprecated spelling of managed, still accepted and listed for clients that check for it.

Available options:

managed,

externally-managed,

ara-managed

benchmark_profiles

string[]

required

Always empty: benchmark_profile is retired (400 benchmark_profile_retired). Use mode ephemeral for benchmark trials.

Allowed value: "coding-benchmark-v1"

runtime_profiles

string[]

required

Always empty: the runtime_profile field is retired (400 runtime_profile_retired). Request a runtime through experimental_runtime_profile.

Allowed value: "runtime/reason-sync-yield-v1"

experimental_runtime_profiles

enum<string>[]

required

experimental_runtime_profile values accepted for the authenticated organization. Always lists the default C2 harness, runtime/reason-c2-tools-v7, which every organization may name for compatibility; lists runtime/reason-v7-sync-yield-v1, runtime/reason-v7-sync-yield-machine-sdk-v1, runtime/reason-v7-stock-prompt-v1 and runtime/reason-v7-docs-v1 only for an organization on that profile's allowlist or an ephemeral workspace whose parent is; always lists runtime/reason-v7-2026-10, a dated release every organization may name.

Available options:

runtime/reason-c2-tools-v7,

runtime/reason-v7-sync-yield-v1,

runtime/reason-v7-sync-yield-machine-sdk-v1,

runtime/reason-v7-stock-prompt-v1,

runtime/reason-v7-docs-v1,

runtime/reason-v7-stock-shape-v1,

runtime/reason-v7-2026-10

experimental_runtime_features

enum<string>[]

required

experimental_runtime_features values a create request may name. A client that names features checks for them here first: a deployment that predates the field ignores it.

Available options:

banner,

sdk_index,

service_tier,

output_cap,

git_metadata,

serial_reads,

recovery_defer_idle_hands,

fewer_tests_low,

fewer_tests_medium,

fewer_tests_high,

fewer_tests_max