---
title: "Get Checkpoint By Slot"
method: GET
path: "/checkpoints/{slot-no}"
tags: ["Checkpoints"]
---

# Get Checkpoint By Slot

`GET /checkpoints/{slot-no}`

Retrieve a checkpoint by its (absolute) slot number. The query is flexible by default. Meaning that, if there's no checkpoint at the given slot, the server
will for for the closest (i.e. most recent) slot that is **before** the provided slot number. This is particularly useful to find ancestors to known slots
in order to use them for references on-chain.

## Path parameters

- `slot_no` integer, required

## Response `200`

OK

## Other responses

- `304` — Not Modified Returned when a `If-None-Match` request header matches the current `ETag` for the response. This is meant to provide efficient caching and polling. The `ETag` corresponds to the most recent block header hash processed by Kupo.

---

[API](https://skmtc.net/txpipe/apis/kupo.md) · [All operations](https://skmtc.net/txpipe/apis/kupo/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/txpipe/kupo/revisions/33786c4eb0ff/schema)