List input a session has accepted but not read
curl --request GET \
--url https://api.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs', 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.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs",
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.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs"
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.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs")
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{
"pending_inputs": [
{
"created_at": "2026-02-18T09:30:00.000Z",
"event": {
"actor": "human:api",
"agent_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"cache_read_tokens": 1,
"cache_write_tokens": 1,
"causal_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"content": {
"blocks": [
{
"byte_size": 1,
"content": [],
"context": "example",
"data": "example",
"encrypted_content": "example",
"height": 1,
"id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"input": {
"key": "example"
},
"is_error": true,
"media_type": "example",
"name": "example-name",
"omitted_bytes": 1,
"payload": "example",
"provider": "example",
"provider_payload": "example",
"redacted": true,
"semantic_hint": "example",
"sha256": "example",
"signature": "example",
"source": {
"file_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"type": "file"
},
"summary": [],
"text": "example",
"title": "example",
"tool_use_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"type": "example",
"uri": "example",
"url": "https://example.com",
"url_expires_at": "2026-02-18T09:30:00.000Z",
"width": 1
}
],
"evaluation_budget_reached": {
"affected_target_session_ids": [
"9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
],
"max_tree_cost_usd": "example"
},
"evaluation_plan_frozen": {
"criteria": [
{
"criterion_key": "example",
"criterion_text": "example"
}
],
"max_concurrent_threads": 1,
"max_tree_cost_usd": "example",
"targets": [
{
"snapshot_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"target_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
}
]
},
"evaluation_run_finished": {
"failure_code": "plan_failed",
"failure_message": "example",
"targets_budget_reached": 1,
"targets_skipped": 1,
"targets_total": 1,
"terminal_status": "completed",
"verdicts_recorded": 1
},
"evaluation_target_skipped": {
"child_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"reason": "example",
"reason_code": "child_create_failed",
"snapshot_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"target_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
},
"evaluation_target_started": {
"child_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"clone_state": "ready",
"evaluation_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"sandbox_provider": "example",
"snapshot_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"target_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
},
"evaluation_verdict_recorded": {
"child_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"cost_completeness": "complete",
"cost_usd": "example",
"evaluation_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"failed_criterion_keys": [
"example"
],
"result": "pass",
"snapshot_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"target_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
},
"metadata": {
"key": "example"
},
"plan": [
{
"content": "example",
"id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"status": "example"
}
],
"stop_reason": "example",
"tools": [
{
"description": "example",
"input_schema": {
"key": "example"
},
"name": "example-name"
}
],
"usage": {
"cache_read_tokens": 1,
"cache_write_tokens": 1,
"cost_usd": 1.5,
"input_tokens": 1,
"output_tokens": 1
}
},
"content_hydration_status": "hydrated",
"content_payload_bytes": 1,
"content_payload_ref": "example",
"content_payload_sha256": "example",
"content_ref": "example",
"cost_micros": 1,
"environment_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"event_status": "example",
"event_type": "example",
"finish_reason": "example",
"inference_config": {
"max_tokens": 1,
"provider_params": {
"key": "example"
},
"reasoning_effort": "example",
"temperature": 1.5,
"top_p": 1.5
},
"input_tokens": 1,
"latency_ms": 1,
"model": {
"base_url": "https://example.com",
"capabilities": {
"key": "example"
},
"context_window": 1,
"max_output_tokens": 1,
"metadata": {
"key": "example"
},
"model": "example",
"model_ref_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"model_version": "example",
"provider": "example",
"provider_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"provider_type": "example",
"serving_backend": "example"
},
"model_ref_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"organization_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"output_tokens": 1,
"parent_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"prompt_tokens": 1,
"provider_model_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"provider_request_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"provider_type": "example",
"role": "user",
"sandbox_instance_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"schema_version": 1,
"thread_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"tool_name": "example",
"tool_use_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"turn_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
},
"input_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"kind": "message"
}
]
}{
"code": "invalid_request",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "unauthorized",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "forbidden",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "not_found",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "rate_limit_exceeded",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "internal_error",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "bad_gateway",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "managed_agents_unavailable",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "gateway_timeout",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}Sessions
List input a session has accepted but not read
Returns the messages waiting for a busy session, in acceptance order. A message sent while the agent is mid-turn is durable immediately but is not part of the transcript until the next turn boundary reads it, so it appears here and not in the events listing. Each entry’s input_id becomes the event id on promotion, which is how a client follows a queued message into history. Interrupt the session to have the queue read now.
GET
/
managed-agents
/
v1
/
sessions
/
{session_id}
/
pending-inputs
List input a session has accepted but not read
curl --request GET \
--url https://api.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs', 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.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs",
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.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs"
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.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.recursion.labelbox.com/managed-agents/v1/sessions/{session_id}/pending-inputs")
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{
"pending_inputs": [
{
"created_at": "2026-02-18T09:30:00.000Z",
"event": {
"actor": "human:api",
"agent_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"cache_read_tokens": 1,
"cache_write_tokens": 1,
"causal_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"content": {
"blocks": [
{
"byte_size": 1,
"content": [],
"context": "example",
"data": "example",
"encrypted_content": "example",
"height": 1,
"id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"input": {
"key": "example"
},
"is_error": true,
"media_type": "example",
"name": "example-name",
"omitted_bytes": 1,
"payload": "example",
"provider": "example",
"provider_payload": "example",
"redacted": true,
"semantic_hint": "example",
"sha256": "example",
"signature": "example",
"source": {
"file_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"type": "file"
},
"summary": [],
"text": "example",
"title": "example",
"tool_use_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"type": "example",
"uri": "example",
"url": "https://example.com",
"url_expires_at": "2026-02-18T09:30:00.000Z",
"width": 1
}
],
"evaluation_budget_reached": {
"affected_target_session_ids": [
"9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
],
"max_tree_cost_usd": "example"
},
"evaluation_plan_frozen": {
"criteria": [
{
"criterion_key": "example",
"criterion_text": "example"
}
],
"max_concurrent_threads": 1,
"max_tree_cost_usd": "example",
"targets": [
{
"snapshot_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"target_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
}
]
},
"evaluation_run_finished": {
"failure_code": "plan_failed",
"failure_message": "example",
"targets_budget_reached": 1,
"targets_skipped": 1,
"targets_total": 1,
"terminal_status": "completed",
"verdicts_recorded": 1
},
"evaluation_target_skipped": {
"child_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"reason": "example",
"reason_code": "child_create_failed",
"snapshot_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"target_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
},
"evaluation_target_started": {
"child_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"clone_state": "ready",
"evaluation_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"sandbox_provider": "example",
"snapshot_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"target_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
},
"evaluation_verdict_recorded": {
"child_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"cost_completeness": "complete",
"cost_usd": "example",
"evaluation_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"failed_criterion_keys": [
"example"
],
"result": "pass",
"snapshot_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"target_session_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
},
"metadata": {
"key": "example"
},
"plan": [
{
"content": "example",
"id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"status": "example"
}
],
"stop_reason": "example",
"tools": [
{
"description": "example",
"input_schema": {
"key": "example"
},
"name": "example-name"
}
],
"usage": {
"cache_read_tokens": 1,
"cache_write_tokens": 1,
"cost_usd": 1.5,
"input_tokens": 1,
"output_tokens": 1
}
},
"content_hydration_status": "hydrated",
"content_payload_bytes": 1,
"content_payload_ref": "example",
"content_payload_sha256": "example",
"content_ref": "example",
"cost_micros": 1,
"environment_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"event_status": "example",
"event_type": "example",
"finish_reason": "example",
"inference_config": {
"max_tokens": 1,
"provider_params": {
"key": "example"
},
"reasoning_effort": "example",
"temperature": 1.5,
"top_p": 1.5
},
"input_tokens": 1,
"latency_ms": 1,
"model": {
"base_url": "https://example.com",
"capabilities": {
"key": "example"
},
"context_window": 1,
"max_output_tokens": 1,
"metadata": {
"key": "example"
},
"model": "example",
"model_ref_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"model_version": "example",
"provider": "example",
"provider_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"provider_type": "example",
"serving_backend": "example"
},
"model_ref_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"organization_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"output_tokens": 1,
"parent_event_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"prompt_tokens": 1,
"provider_model_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"provider_request_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"provider_type": "example",
"role": "user",
"sandbox_instance_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"schema_version": 1,
"thread_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"tool_name": "example",
"tool_use_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"turn_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d"
},
"input_id": "9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d",
"kind": "message"
}
]
}{
"code": "invalid_request",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "unauthorized",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "forbidden",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "not_found",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "rate_limit_exceeded",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "internal_error",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "bad_gateway",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "managed_agents_unavailable",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}{
"code": "gateway_timeout",
"message": "<string>",
"details": {
"field": "<string>",
"issues": [
"<string>"
],
"requestId": "<string>",
"retryable": true
}
}Authorizations
A Recursion API key, created in the console under API keys.
Path Parameters
Session id (UUID) as returned by startSession or listSessions.
Response
Response body of GET /v1/sessions/{session_id}/pending-inputs: what the session has durably accepted but not yet read. These inputs are deliberately absent from the transcript until a turn boundary promotes them, so a client can show them as waiting rather than as history the agent has already acted on.
Response body of GET /v1/sessions/{session_id}/pending-inputs: what the session has durably accepted but not yet read. These inputs are deliberately absent from the transcript until a turn boundary promotes them, so a client can show them as waiting rather than as history the agent has already acted on.
Inputs accepted for this session that the agent has not read yet, in the order they were accepted. Empty when nothing is waiting.
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