---
title: "Backfill Snapshot Reporting"
method: POST
path: "/api/v1/admin/reporting/snapshot/backfill"
tags: ["Admin APIs", "Reporting"]
---

# Backfill Snapshot Reporting

`POST /api/v1/admin/reporting/snapshot/backfill`

Backfill snapshot_reporting tables for [start, end] (inclusive, max 30 days per call).

All saves are upserts — safe to re-run. ETL/ledger routing (cutover 2026-05-29)
is handled automatically by the underlying data fetch.
Use skip_existing=true to skip dates that already have a snapshot row.

## Query parameters

- `start` string, date, required
- `end` string, date, required
- `skip_existing` boolean

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/carbonarc/apis/carbon-arc-client-admin-api.md) · [All operations](https://skmtc.net/carbonarc/apis/carbon-arc-client-admin-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/carbonarc/carbon-arc-client-admin-api/revisions/a8ca30023371/schema)