---
title: "Cycle Boundaries"
method: GET
path: "/v1/cycle-boundaries"
tags: ["Market Data"]
---

# Cycle Boundaries

`GET /v1/cycle-boundaries`

## Request

- Base URL: `https://api.blocklens.co` (the document declares no server; this is the origin it was published from)
- URL: `https://api.blocklens.co/v1/cycle-boundaries`
- Auth: none declared

Returns summary data for each Bitcoin market cycle: start date/price, peak date/price,
bottom date/price, max drawdown, days to bottom, days to recovery, and total cycle duration.

Cycles are defined by three reference points: ATH (all-time high), halving, and cycle low.
For the current (incomplete) cycle, `is_current=true` and current drawdown from peak is provided.

## Query parameters

- `type` string, nullable: Cycle type filter: low, ath, or halving. Returns all if omitted.
- `symbol` string: Cryptocurrency symbol

## Response `200`

Successful Response

- ApiResponse: Standard API response model
  - `success` boolean, required
  - `data` unknown, required
  - `message` string, nullable
  - `count` integer, nullable
  - `timestamp` string, date-time

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/blocklens/apis/blocklens-on-chain-api.md) · [All operations](https://skmtc.dev/blocklens/apis/blocklens-on-chain-api/llms.txt) · [OpenAPI document](https://skmtc.dev/blocklens/apis/blocklens-on-chain-api/revisions/dacc02ae0f9a?raw)