Platform guide

Stacksona for LlamaIndex

Q: What statuses should my workflow allow?

Execute the gated action only on allow or approved. Stop, retry, notify, or route to fallback for every other state.

Route workflow human input and approval events through Stacksona so approvals are centralized across agents and apps.

RecipeNo native package yetSurface: Workflow event adapter

Route human input and approval events through Stacksona so review is centralized outside the workflow runtime. This page shows the recommended integration pattern using HTTP, a wrapper, or a small bridge service.

Start with this decision step

Every recipe should create a Stacksona decision before the platform executes the risky action.

pseudo

1. Agent prepares a risky action.
2. Platform calls Stacksona with action details.
3. If decision is allow or approved, execute the action.
4. If decision is pending_review, wait, poll, or resume through callback.
5. If decision is reject or rejected, do not execute.

Recommended pattern

Step	Description
Approval event	When a workflow needs human input, create a Stacksona decision request.
State	Store task_id and thread_id in workflow state.
Continuation	Continue only when Stacksona returns approved or allow.

Example

python

# Conceptual LlamaIndex workflow pattern.

async def approval_step(ctx, event):
    decision = await stacksona_request_decision({
        "taskId": event.task_id,
        "workflowName": "LlamaIndex Workflow",
        "taskLabel": event.label,
        "toolName": event.tool_name,
        "subject": event.subject,
        "riskLevel": event.risk_level,
        "payload": event.payload,
    })

    if decision["status"] == "pending_review":
        await ctx.set("stacksona_thread_id", decision["thread_id"])
        return HumanReviewRequired(decision=decision)

    return ApprovalResolved(decision=decision)

Decision handling

Status	Workflow behavior
`allow`	Continue immediately.
`reject`	Stop the action before execution.
`pending_review`	Pause, poll, or wait for callback. Continue only after approved.
`approved`	Execute the action. Validate token first when signed approval is required.
`rejected`	Do not execute. Route to fallback, manual task, or safe response.

Integration FAQ

Can I use Stacksona with LlamaIndex today?

Yes. Use the documented native package when one exists. Otherwise, use the REST API, HTTP module, webhook action, or a small Node sidecar with @stacksona/sdk.

Where should Stacksona sit in a LlamaIndex workflow?

Place Stacksona immediately before the action that sends, updates, deletes, refunds, posts, deploys, or calls a production API.

What statuses should my workflow allow?

Execute the gated action only on allow or approved. Stop, retry, notify, or route to fallback for every other state.