Invoke a connected MCP tool without a Session
curl --request POST \
--url https://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"connection_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"tool_name": "<string>",
"arguments": {},
"idempotency_key": "<string>",
"expected_schema_digest": "<string>",
"deadline_at": "2023-11-07T05:31:56Z",
"expected_connection_revision": "<string>"
}
'import requests
url = "https://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations"
payload = {
"connection_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"tool_name": "<string>",
"arguments": {},
"idempotency_key": "<string>",
"expected_schema_digest": "<string>",
"deadline_at": "2023-11-07T05:31:56Z",
"expected_connection_revision": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
connection_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
tool_name: '<string>',
arguments: {},
idempotency_key: '<string>',
expected_schema_digest: '<string>',
deadline_at: '2023-11-07T05:31:56Z',
expected_connection_revision: '<string>'
})
};
fetch('https://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations', 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/organizations/{orgId}/tool-invocations",
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([
'connection_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'tool_name' => '<string>',
'arguments' => [
],
'idempotency_key' => '<string>',
'expected_schema_digest' => '<string>',
'deadline_at' => '2023-11-07T05:31:56Z',
'expected_connection_revision' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($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://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations"
payload := strings.NewReader("{\n \"connection_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tool_name\": \"<string>\",\n \"arguments\": {},\n \"idempotency_key\": \"<string>\",\n \"expected_schema_digest\": \"<string>\",\n \"deadline_at\": \"2023-11-07T05:31:56Z\",\n \"expected_connection_revision\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"connection_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tool_name\": \"<string>\",\n \"arguments\": {},\n \"idempotency_key\": \"<string>\",\n \"expected_schema_digest\": \"<string>\",\n \"deadline_at\": \"2023-11-07T05:31:56Z\",\n \"expected_connection_revision\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"connection_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tool_name\": \"<string>\",\n \"arguments\": {},\n \"idempotency_key\": \"<string>\",\n \"expected_schema_digest\": \"<string>\",\n \"deadline_at\": \"2023-11-07T05:31:56Z\",\n \"expected_connection_revision\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"connectionId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"connectionRevision": "<string>",
"toolName": "<string>",
"schemaDigest": "<string>",
"status": "accepted",
"result": null,
"createdAt": "<string>",
"deadlineAt": "<string>",
"completedAt": "<string>",
"cancelRequestedAt": "<string>"
}{
"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"
}
}Tools
Invoke a connected MCP tool without a Session
Requires tools:execute. Returns a durable receipt immediately. Retry the same idempotency key and identical input to observe the same invocation; use a new key for an intentional repetition. A completed provider error is replayable. Ambiguous means the provider may have acted and is never automatically repeated. No model or Session is started.
Scope:tools:executePOST
/
v3
/
organizations
/
{orgId}
/
tool-invocations
Invoke a connected MCP tool without a Session
curl --request POST \
--url https://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"connection_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"tool_name": "<string>",
"arguments": {},
"idempotency_key": "<string>",
"expected_schema_digest": "<string>",
"deadline_at": "2023-11-07T05:31:56Z",
"expected_connection_revision": "<string>"
}
'import requests
url = "https://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations"
payload = {
"connection_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"tool_name": "<string>",
"arguments": {},
"idempotency_key": "<string>",
"expected_schema_digest": "<string>",
"deadline_at": "2023-11-07T05:31:56Z",
"expected_connection_revision": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
connection_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
tool_name: '<string>',
arguments: {},
idempotency_key: '<string>',
expected_schema_digest: '<string>',
deadline_at: '2023-11-07T05:31:56Z',
expected_connection_revision: '<string>'
})
};
fetch('https://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations', 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/organizations/{orgId}/tool-invocations",
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([
'connection_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'tool_name' => '<string>',
'arguments' => [
],
'idempotency_key' => '<string>',
'expected_schema_digest' => '<string>',
'deadline_at' => '2023-11-07T05:31:56Z',
'expected_connection_revision' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($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://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations"
payload := strings.NewReader("{\n \"connection_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tool_name\": \"<string>\",\n \"arguments\": {},\n \"idempotency_key\": \"<string>\",\n \"expected_schema_digest\": \"<string>\",\n \"deadline_at\": \"2023-11-07T05:31:56Z\",\n \"expected_connection_revision\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"connection_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tool_name\": \"<string>\",\n \"arguments\": {},\n \"idempotency_key\": \"<string>\",\n \"expected_schema_digest\": \"<string>\",\n \"deadline_at\": \"2023-11-07T05:31:56Z\",\n \"expected_connection_revision\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.reasonmachines.com/v3/organizations/{orgId}/tool-invocations")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"connection_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tool_name\": \"<string>\",\n \"arguments\": {},\n \"idempotency_key\": \"<string>\",\n \"expected_schema_digest\": \"<string>\",\n \"deadline_at\": \"2023-11-07T05:31:56Z\",\n \"expected_connection_revision\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"connectionId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"connectionRevision": "<string>",
"toolName": "<string>",
"schemaDigest": "<string>",
"status": "accepted",
"result": null,
"createdAt": "<string>",
"deadlineAt": "<string>",
"completedAt": "<string>",
"cancelRequestedAt": "<string>"
}{
"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
Your Reason API key from Settings › API keys. 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, network:read, network:write, automations:read, automations:write, agent_auth:read. network:read and network:write are opt-in, excluded from default keys. network:read reads the saved workspace network policy; network:write replaces custom allowed hosts and requires a current organization owner/admin. Legacy project PATCH requests containing network_allowed_hosts also require network:write plus their existing run scope and project management permission; saved project hosts do not affect current session egress. Only owners/admins can mint or manage keys with network:write; keys cannot grant themselves more authority. See /docs/network-policies for replacement semantics and runtime applicability. 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).
Path Parameters
Organization id or slug. Resolve it with GET /v3/self.
Body
application/json
Connected MCP account ID from listConnections.
Pattern:
^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$Exact provider tool name from listConnectionTools.
Required string length:
1 - 256Arguments matching the current provider input schema; maximum encoded size 64 KiB.
Stable intent key. Identical retries observe the same call; intentional repetitions require a new key.
Required string length:
1 - 200Schema digest returned by tool discovery; refuses a changed schema.
Pattern:
^[a-f0-9]{64}$Absolute observation deadline; execution is capped at 60 seconds. Expiry after dispatch may be ambiguous.
Pattern:
^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d(?:\.\d+)?(?:Z))$Connection revision returned by tool discovery; refuses changed configuration or a replacement account.
Pattern:
^[a-f0-9]{64}$Response
Accepted or replayed invocation
Pattern:
^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$Pattern:
^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$Available options:
accepted, running, completed, failed, cancelled, ambiguous