---
title: "Kernel Post Run Endpoint"
method: POST
path: "/api/kernel/post_run"
tags: ["task_dag_mutations"]
deprecated: true
---

# Kernel Post Run Endpoint

`POST /api/kernel/post_run`

> **Deprecated.**

Accept a full post-run snapshot: evidence values + namespace inventory.

DEPRECATED: only legacy injected ``Q_VARS`` clients post here (qualia
uses ``/serialize_and_submit`` + the inventory Comm). Remove with the
local handler and ``KernelPostRunRequest`` once the
``kernel_post_run.start`` log goes quiet; the drain window is bounded
by app-update uptake, not kernel churn.

Internal-principal only: evidence values must originate from the
kernel runtime (see ``VARIABLE_EVIDENCE_INVARIANT``).

## Request body

- KernelPostRunRequest — Full post-run snapshot pushed from a kernel: evidence values plus the namespace inventory rendered for the frontend variables panel. Mirrors ``handlers.task_dag.KernelPostRunRequest`` so the local and cloud ``/api/kernel/post_run`` adapters accept an identical JSON shape.
  - `notebook_id` string, required
  - `variables` object
  - `namespace` object[]
  - `cell_id` string, nullable

## Response `200`

Successful Response

- SerializeAndSubmitResponse
  - `accepted` string[]
  - `rejected` object
  - `tracked` TrackedVariable[]
    - `name` string, required
    - `expected_type` string, nullable, required
    - `task_id` string, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/quadrillion/apis/quadrillion-cloud-api.md) · [All operations](https://skmtc.net/quadrillion/apis/quadrillion-cloud-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/quadrillion/quadrillion-cloud-api/revisions/dcf9b4550387/schema)