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agents.session-fetch-attachments ​
Read-only: resolve StorageObject attachments for an agent session into a metadata manifest; presigned URLs are redacted from workflow state
Resolve attachment StorageObjects for an agent session into a metadata manifest.
Overview ​
| Property | Value |
|---|---|
| Workflow type | Atomic |
| Library | App-agents |
| Version | 1.0 |
Input Schema ​
| Field | Type | Required | Default | Description |
|---|---|---|---|---|
organization_uuid | string | Yes | — | — |
session_uuid | string | Yes | — | — |
expires_s | integer | No | — | — |
Output Schema ​
| Field | Type | Required | Default | Description |
|---|---|---|---|---|
items | list | No | — | — |
failure_reason | string | No | — | — |
failed_at | string | No | — | — |
failed_at_state | string | No | — | — |
failed_step | string | No | — | — |
failed_layer | integer | No | — | — |
error | string | No | — | — |
error_type | string | No | — | — |
organization_uuid | json | No | — | — |
session_uuid | json | No | — | — |
expires_s | json | No | — | — |
States ​
| State | Initial | Terminal | Success | Auto-advance | Description |
|---|---|---|---|---|---|
pending | Yes | No | — | execute | — |
completed | No | Yes | Yes | — | — |
failed | No | Yes | No | — | — |
State Diagram ​
Transitions ​
| From | Action | To | Description |
|---|---|---|---|
pending | execute | completed | — |
* (any state) | fail | failed | — |
Outcomes ​
| Outcome | Type | Description | State Data Keys |
|---|---|---|---|
fetched | SUCCESS | Session attachments fetched | items, session_uuid, organization_uuid |
failed | FAILURE | Session attachments fetched failed | failure_reason, error, error_type, failed_at_state, failed_step, failed_layer |
Business Errors ​
| Code | Message Template |
|---|---|
AGENTS_ORGANIZATION_CONTEXT_INVALID | Authenticated organization context is missing or does not match the workflow input |
AGENTS_SESSION_NOT_FOUND | Agent session {session_uuid} was not found in the organization |
AGENTS_CONFIG_NOT_FOUND | Agent configuration {agent_config_uuid} was not found in the organization |
AGENTS_RUNNER_GROUP_NOT_FOUND | Runner group {runner_group_uuid} was not found in the organization |
AGENTS_VALIDATION_FAILED | Workflow input or domain state failed validation: |
AGENTS_CONFLICT | Conflicting agent domain state: |
AGENTS_PROVIDER_FAILED | Upstream provider or runner call failed: |
AGENTS_MCP_CALL_FAILED | MCP tool call failed for {tool_name}: |
API Usage ​
bash
POST /api/workflows/start
Content-Type: application/json
{
"workflow_type": "agents.session-fetch-attachments",
"initial_data": {
"organization_uuid": "value",
"session_uuid": "value"
}
}