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brk/modules/brk-client/docs/classes/BrkClient.md
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[**brk-client**](../README.md)
***
[brk-client](../globals.md) / BrkClient
# Class: BrkClient
Defined in: [Developer/brk/modules/brk-client/index.js:4491](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L4491)
Main BRK client with metrics tree and API methods
## Extends
- `BrkClientBase`
## Constructors
### Constructor
> **new BrkClient**(`options`): `BrkClient`
Defined in: [Developer/brk/modules/brk-client/index.js:5408](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L5408)
#### Parameters
##### options
`string` | [`BrkClientOptions`](../interfaces/BrkClientOptions.md)
#### Returns
`BrkClient`
#### Overrides
`BrkClientBase.constructor`
## Properties
### \_cachePromise
> **\_cachePromise**: `Promise`\<`Cache` \| `null`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1102](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L1102)
#### Inherited from
`BrkClientBase._cachePromise`
***
### metrics
> **metrics**: [`MetricsTree`](../interfaces/MetricsTree.md)
Defined in: [Developer/brk/modules/brk-client/index.js:5411](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L5411)
## Methods
### \_fetchMetricData()
> **\_fetchMetricData**\<`T`\>(`path`, `onUpdate?`): `Promise`\<[`MetricData`](../interfaces/MetricData.md)\<`T`\>\>
Defined in: [Developer/brk/modules/brk-client/index.js:1169](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L1169)
Fetch metric data and wrap with helper methods (internal)
#### Type Parameters
##### T
`T`
#### Parameters
##### path
`string`
##### onUpdate?
(`value`) => `void`
#### Returns
`Promise`\<[`MetricData`](../interfaces/MetricData.md)\<`T`\>\>
#### Inherited from
`BrkClientBase._fetchMetricData`
***
### get()
> **get**(`path`): `Promise`\<`Response`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1109](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L1109)
#### Parameters
##### path
`string`
#### Returns
`Promise`\<`Response`\>
#### Inherited from
`BrkClientBase.get`
***
### getAddress()
> **getAddress**(`address`): `Promise`\<[`AddressStats`](../interfaces/AddressStats.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6583](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6583)
Address information
Retrieve address information including balance and transaction counts. Supports all standard Bitcoin address types (P2PKH, P2SH, P2WPKH, P2WSH, P2TR).
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address)*
Endpoint: `GET /api/address/{address}`
#### Parameters
##### address
`string`
#### Returns
`Promise`\<[`AddressStats`](../interfaces/AddressStats.md)\>
***
### getAddressConfirmedTxs()
> **getAddressConfirmedTxs**(`address`, `after_txid?`, `limit?`): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6624](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6624)
Address confirmed transactions
Get confirmed transaction IDs for an address, 25 per page. Use ?after_txid=<txid> for pagination.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-transactions-chain)*
Endpoint: `GET /api/address/{address}/txs/chain`
#### Parameters
##### address
`string`
##### after\_txid?
`string`
Txid to paginate from (return transactions before this one)
##### limit?
`number`
Maximum number of results to return. Defaults to 25 if not specified.
#### Returns
`Promise`\<`string`[]\>
***
### getAddressMempoolTxs()
> **getAddressMempoolTxs**(`address`): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6645](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6645)
Address mempool transactions
Get unconfirmed transaction IDs for an address from the mempool (up to 50).
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-transactions-mempool)*
Endpoint: `GET /api/address/{address}/txs/mempool`
#### Parameters
##### address
`string`
#### Returns
`Promise`\<`string`[]\>
***
### getAddressTxs()
> **getAddressTxs**(`address`, `after_txid?`, `limit?`): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6601](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6601)
Address transaction IDs
Get transaction IDs for an address, newest first. Use after_txid for pagination.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-transactions)*
Endpoint: `GET /api/address/{address}/txs`
#### Parameters
##### address
`string`
##### after\_txid?
`string`
Txid to paginate from (return transactions before this one)
##### limit?
`number`
Maximum number of results to return. Defaults to 25 if not specified.
#### Returns
`Promise`\<`string`[]\>
***
### getAddressUtxos()
> **getAddressUtxos**(`address`): `Promise`\<[`Utxo`](../interfaces/Utxo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6661](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6661)
Address UTXOs
Get unspent transaction outputs (UTXOs) for an address. Returns txid, vout, value, and confirmation status for each UTXO.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-utxo)*
Endpoint: `GET /api/address/{address}/utxo`
#### Parameters
##### address
`string`
#### Returns
`Promise`\<[`Utxo`](../interfaces/Utxo.md)[]\>
***
### getApi()
> **getApi**(): `Promise`\<`any`\>
Defined in: [Developer/brk/modules/brk-client/index.js:6567](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6567)
Compact OpenAPI specification
Compact OpenAPI specification optimized for LLM consumption. Removes redundant fields while preserving essential API information. Full spec available at `/openapi.json`.
Endpoint: `GET /api.json`
#### Returns
`Promise`\<`any`\>
***
### getBlock()
> **getBlock**(`hash`): `Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6693](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6693)
Block information
Retrieve block information by block hash. Returns block metadata including height, timestamp, difficulty, size, weight, and transaction count.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block)*
Endpoint: `GET /api/block/{hash}`
#### Parameters
##### hash
`string`
#### Returns
`Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)\>
***
### getBlockByHeight()
> **getBlockByHeight**(`height`): `Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6677](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6677)
Block by height
Retrieve block information by block height. Returns block metadata including hash, timestamp, difficulty, size, weight, and transaction count.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-height)*
Endpoint: `GET /api/block-height/{height}`
#### Parameters
##### height
`number`
#### Returns
`Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)\>
***
### getBlockByTimestamp()
> **getBlockByTimestamp**(`timestamp`): `Promise`\<[`BlockTimestamp`](../interfaces/BlockTimestamp.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7207](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7207)
Block by timestamp
Find the block closest to a given UNIX timestamp.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-timestamp)*
Endpoint: `GET /api/v1/mining/blocks/timestamp/{timestamp}`
#### Parameters
##### timestamp
`number`
#### Returns
`Promise`\<[`BlockTimestamp`](../interfaces/BlockTimestamp.md)\>
***
### getBlockFeeRates()
> **getBlockFeeRates**(`time_period`): `Promise`\<`any`\>
Defined in: [Developer/brk/modules/brk-client/index.js:7143](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7143)
Block fee rates (WIP)
**Work in progress.** Get block fee rate percentiles (min, 10th, 25th, median, 75th, 90th, max) for a time period. Valid periods: 24h, 3d, 1w, 1m, 3m, 6m, 1y, 2y, 3y
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-feerates)*
Endpoint: `GET /api/v1/mining/blocks/fee-rates/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
#### Returns
`Promise`\<`any`\>
***
### getBlockFees()
> **getBlockFees**(`time_period`): `Promise`\<[`BlockFeesEntry`](../interfaces/BlockFeesEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:7159](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7159)
Block fees
Get average block fees for a time period. Valid periods: 24h, 3d, 1w, 1m, 3m, 6m, 1y, 2y, 3y
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-fees)*
Endpoint: `GET /api/v1/mining/blocks/fees/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
#### Returns
`Promise`\<[`BlockFeesEntry`](../interfaces/BlockFeesEntry.md)[]\>
***
### getBlockRaw()
> **getBlockRaw**(`hash`): `Promise`\<`number`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6709](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6709)
Raw block
Returns the raw block data in binary format.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-raw)*
Endpoint: `GET /api/block/{hash}/raw`
#### Parameters
##### hash
`string`
#### Returns
`Promise`\<`number`[]\>
***
### getBlockRewards()
> **getBlockRewards**(`time_period`): `Promise`\<[`BlockRewardsEntry`](../interfaces/BlockRewardsEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:7175](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7175)
Block rewards
Get average block rewards (coinbase = subsidy + fees) for a time period. Valid periods: 24h, 3d, 1w, 1m, 3m, 6m, 1y, 2y, 3y
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-rewards)*
Endpoint: `GET /api/v1/mining/blocks/rewards/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
#### Returns
`Promise`\<[`BlockRewardsEntry`](../interfaces/BlockRewardsEntry.md)[]\>
***
### getBlocks()
> **getBlocks**(): `Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6789](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6789)
Recent blocks
Retrieve the last 10 blocks. Returns block metadata for each block.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-blocks)*
Endpoint: `GET /api/blocks`
#### Returns
`Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)[]\>
***
### getBlocksFromHeight()
> **getBlocksFromHeight**(`height`): `Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6805](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6805)
Blocks from height
Retrieve up to 10 blocks going backwards from the given height. For example, height=100 returns blocks 100, 99, 98, ..., 91. Height=0 returns only block 0.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-blocks)*
Endpoint: `GET /api/blocks/{height}`
#### Parameters
##### height
`number`
#### Returns
`Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)[]\>
***
### getBlockSizesWeights()
> **getBlockSizesWeights**(`time_period`): `Promise`\<[`BlockSizesWeights`](../interfaces/BlockSizesWeights.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7191](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7191)
Block sizes and weights
Get average block sizes and weights for a time period. Valid periods: 24h, 3d, 1w, 1m, 3m, 6m, 1y, 2y, 3y
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-sizes-weights)*
Endpoint: `GET /api/v1/mining/blocks/sizes-weights/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
#### Returns
`Promise`\<[`BlockSizesWeights`](../interfaces/BlockSizesWeights.md)\>
***
### getBlockStatus()
> **getBlockStatus**(`hash`): `Promise`\<[`BlockStatus`](../interfaces/BlockStatus.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6725](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6725)
Block status
Retrieve the status of a block. Returns whether the block is in the best chain and, if so, its height and the hash of the next block.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-status)*
Endpoint: `GET /api/block/{hash}/status`
#### Parameters
##### hash
`string`
#### Returns
`Promise`\<[`BlockStatus`](../interfaces/BlockStatus.md)\>
***
### getBlockTxid()
> **getBlockTxid**(`hash`, `index`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:6742](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6742)
Transaction ID at index
Retrieve a single transaction ID at a specific index within a block. Returns plain text txid.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-transaction-id)*
Endpoint: `GET /api/block/{hash}/txid/{index}`
#### Parameters
##### hash
`string`
Bitcoin block hash
##### index
`number`
Transaction index within the block (0-based)
#### Returns
`Promise`\<`string`\>
***
### getBlockTxids()
> **getBlockTxids**(`hash`): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6758](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6758)
Block transaction IDs
Retrieve all transaction IDs in a block. Returns an array of txids in block order.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-transaction-ids)*
Endpoint: `GET /api/block/{hash}/txids`
#### Parameters
##### hash
`string`
#### Returns
`Promise`\<`string`[]\>
***
### getBlockTxs()
> **getBlockTxs**(`hash`, `start_index`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6775](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6775)
Block transactions (paginated)
Retrieve transactions in a block by block hash, starting from the specified index. Returns up to 25 transactions at a time.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-transactions)*
Endpoint: `GET /api/block/{hash}/txs/{start_index}`
#### Parameters
##### hash
`string`
Bitcoin block hash
##### start\_index
`number`
Starting transaction index within the block (0-based)
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
***
### getDifficultyAdjustment()
> **getDifficultyAdjustment**(): `Promise`\<[`DifficultyAdjustment`](../interfaces/DifficultyAdjustment.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7099](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7099)
Difficulty adjustment
Get current difficulty adjustment information including progress through the current epoch, estimated retarget date, and difficulty change prediction.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-difficulty-adjustment)*
Endpoint: `GET /api/v1/difficulty-adjustment`
#### Returns
`Promise`\<[`DifficultyAdjustment`](../interfaces/DifficultyAdjustment.md)\>
***
### getDifficultyAdjustments()
> **getDifficultyAdjustments**(): `Promise`\<[`DifficultyAdjustmentEntry`](../interfaces/DifficultyAdjustmentEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:7221](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7221)
Difficulty adjustments (all time)
Get historical difficulty adjustments including timestamp, block height, difficulty value, and percentage change.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-difficulty-adjustments)*
Endpoint: `GET /api/v1/mining/difficulty-adjustments`
#### Returns
`Promise`\<[`DifficultyAdjustmentEntry`](../interfaces/DifficultyAdjustmentEntry.md)[]\>
***
### getDifficultyAdjustmentsByPeriod()
> **getDifficultyAdjustmentsByPeriod**(`time_period`): `Promise`\<[`DifficultyAdjustmentEntry`](../interfaces/DifficultyAdjustmentEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:7237](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7237)
Difficulty adjustments
Get historical difficulty adjustments for a time period. Valid periods: 24h, 3d, 1w, 1m, 3m, 6m, 1y, 2y, 3y.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-difficulty-adjustments)*
Endpoint: `GET /api/v1/mining/difficulty-adjustments/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
#### Returns
`Promise`\<[`DifficultyAdjustmentEntry`](../interfaces/DifficultyAdjustmentEntry.md)[]\>
***
### getDiskUsage()
> **getDiskUsage**(): `Promise`\<[`DiskUsage`](../interfaces/DiskUsage.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6992](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6992)
Disk usage
Returns the disk space used by BRK and Bitcoin data.
Endpoint: `GET /api/server/disk`
#### Returns
`Promise`\<[`DiskUsage`](../interfaces/DiskUsage.md)\>
***
### getHashrate()
> **getHashrate**(): `Promise`\<[`HashrateSummary`](../interfaces/HashrateSummary.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7251](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7251)
Network hashrate (all time)
Get network hashrate and difficulty data for all time.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-hashrate)*
Endpoint: `GET /api/v1/mining/hashrate`
#### Returns
`Promise`\<[`HashrateSummary`](../interfaces/HashrateSummary.md)\>
***
### getHashrateByPeriod()
> **getHashrateByPeriod**(`time_period`): `Promise`\<[`HashrateSummary`](../interfaces/HashrateSummary.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7267](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7267)
Network hashrate
Get network hashrate and difficulty data for a time period. Valid periods: 24h, 3d, 1w, 1m, 3m, 6m, 1y, 2y, 3y
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-hashrate)*
Endpoint: `GET /api/v1/mining/hashrate/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
#### Returns
`Promise`\<[`HashrateSummary`](../interfaces/HashrateSummary.md)\>
***
### getHealth()
> **getHealth**(): `Promise`\<[`Health`](../interfaces/Health.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7357](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7357)
Health check
Returns the health status of the API server, including uptime information.
Endpoint: `GET /health`
#### Returns
`Promise`\<[`Health`](../interfaces/Health.md)\>
***
### getIndexes()
> **getIndexes**(): `Promise`\<[`IndexInfo`](../interfaces/IndexInfo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6943](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6943)
List available indexes
Returns all available indexes with their accepted query aliases. Use any alias when querying metrics.
Endpoint: `GET /api/metrics/indexes`
#### Returns
`Promise`\<[`IndexInfo`](../interfaces/IndexInfo.md)[]\>
***
### getJson()
> **getJson**\<`T`\>(`path`, `onUpdate?`): `Promise`\<`T`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1124](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L1124)
Make a GET request with stale-while-revalidate caching
#### Type Parameters
##### T
`T`
#### Parameters
##### path
`string`
##### onUpdate?
(`value`) => `void`
Called when data is available
#### Returns
`Promise`\<`T`\>
#### Inherited from
`BrkClientBase.getJson`
***
### getMempool()
> **getMempool**(): `Promise`\<[`MempoolInfo`](../interfaces/MempoolInfo.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6819](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6819)
Mempool statistics
Get current mempool statistics including transaction count, total vsize, and total fees.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool)*
Endpoint: `GET /api/mempool/info`
#### Returns
`Promise`\<[`MempoolInfo`](../interfaces/MempoolInfo.md)\>
***
### getMempoolBlocks()
> **getMempoolBlocks**(): `Promise`\<[`MempoolBlock`](../interfaces/MempoolBlock.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:7113](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7113)
Projected mempool blocks
Get projected blocks from the mempool for fee estimation. Each block contains statistics about transactions that would be included if a block were mined now.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool-blocks-fees)*
Endpoint: `GET /api/v1/fees/mempool-blocks`
#### Returns
`Promise`\<[`MempoolBlock`](../interfaces/MempoolBlock.md)[]\>
***
### getMempoolTxids()
> **getMempoolTxids**(): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6833](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6833)
Mempool transaction IDs
Get all transaction IDs currently in the mempool.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool-transaction-ids)*
Endpoint: `GET /api/mempool/txids`
#### Returns
`Promise`\<`string`[]\>
***
### getMetric()
> **getMetric**(`metric`, `index`, `start?`, `end?`, `limit?`, `format?`): `Promise`\<`string` \| [`AnyMetricData`](../type-aliases/AnyMetricData.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6866](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6866)
Get metric data
Fetch data for a specific metric at the given index. Use query parameters to filter by date range and format (json/csv).
Endpoint: `GET /api/metric/{metric}/{index}`
#### Parameters
##### metric
`string`
Metric name
##### index
[`Index`](../type-aliases/Index.md)
Aggregation index
##### start?
`number`
Inclusive starting index, if negative counts from end
##### end?
`number`
Exclusive ending index, if negative counts from end
##### limit?
`string`
Maximum number of values to return (ignored if `end` is set)
##### format?
[`Format`](../type-aliases/Format.md)
Format of the output
#### Returns
`Promise`\<`string` \| [`AnyMetricData`](../type-aliases/AnyMetricData.md)\>
***
### getMetricInfo()
> **getMetricInfo**(`metric`): `Promise`\<[`Index`](../type-aliases/Index.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6847](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6847)
Get supported indexes for a metric
Returns the list of indexes supported by the specified metric. For example, `realized_price` might be available on dateindex, weekindex, and monthindex.
Endpoint: `GET /api/metric/{metric}`
#### Parameters
##### metric
`string`
#### Returns
`Promise`\<[`Index`](../type-aliases/Index.md)[]\>
***
### getMetrics()
> **getMetrics**(`metrics?`, `index?`, `start?`, `end?`, `limit?`, `format?`): `Promise`\<`string` \| [`AnyMetricData`](../type-aliases/AnyMetricData.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6907](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6907)
Bulk metric data
Fetch multiple metrics in a single request. Supports filtering by index and date range. Returns an array of MetricData objects. For a single metric, use `get_metric` instead.
Endpoint: `GET /api/metrics/bulk`
#### Parameters
##### metrics?
`string`
Requested metrics
##### index?
[`Index`](../type-aliases/Index.md)
Index to query
##### start?
`number`
Inclusive starting index, if negative counts from end
##### end?
`number`
Exclusive ending index, if negative counts from end
##### limit?
`string`
Maximum number of values to return (ignored if `end` is set)
##### format?
[`Format`](../type-aliases/Format.md)
Format of the output
#### Returns
`Promise`\<`string` \| [`AnyMetricData`](../type-aliases/AnyMetricData.md)[]\>
***
### getMetricsCount()
> **getMetricsCount**(): `Promise`\<[`MetricCount`](../interfaces/MetricCount.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6931](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6931)
Metric count
Returns the number of metrics available per index type.
Endpoint: `GET /api/metrics/count`
#### Returns
`Promise`\<[`MetricCount`](../interfaces/MetricCount.md)[]\>
***
### getMetricsTree()
> **getMetricsTree**(): `Promise`\<[`TreeNode`](../type-aliases/TreeNode.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6888](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6888)
Metrics catalog
Returns the complete hierarchical catalog of available metrics organized as a tree structure. Metrics are grouped by categories and subcategories.
Endpoint: `GET /api/metrics`
#### Returns
`Promise`\<[`TreeNode`](../type-aliases/TreeNode.md)\>
***
### getOpenapi()
> **getOpenapi**(): `Promise`\<`any`\>
Defined in: [Developer/brk/modules/brk-client/index.js:7369](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7369)
OpenAPI specification
Full OpenAPI 3.1 specification for this API.
Endpoint: `GET /openapi.json`
#### Returns
`Promise`\<`any`\>
***
### getPool()
> **getPool**(`slug`): `Promise`\<[`PoolDetail`](../interfaces/PoolDetail.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7283](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7283)
Mining pool details
Get detailed information about a specific mining pool including block counts and shares for different time periods.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pool)*
Endpoint: `GET /api/v1/mining/pool/{slug}`
#### Parameters
##### slug
[`PoolSlug`](../type-aliases/PoolSlug.md)
#### Returns
`Promise`\<[`PoolDetail`](../interfaces/PoolDetail.md)\>
***
### getPools()
> **getPools**(): `Promise`\<[`PoolInfo`](../interfaces/PoolInfo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:7297](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7297)
List all mining pools
Get list of all known mining pools with their identifiers.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pools)*
Endpoint: `GET /api/v1/mining/pools`
#### Returns
`Promise`\<[`PoolInfo`](../interfaces/PoolInfo.md)[]\>
***
### getPoolStats()
> **getPoolStats**(`time_period`): `Promise`\<[`PoolsSummary`](../interfaces/PoolsSummary.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7313](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7313)
Mining pool statistics
Get mining pool statistics for a time period. Valid periods: 24h, 3d, 1w, 1m, 3m, 6m, 1y, 2y, 3y
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pools)*
Endpoint: `GET /api/v1/mining/pools/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
#### Returns
`Promise`\<[`PoolsSummary`](../interfaces/PoolsSummary.md)\>
***
### getRecommendedFees()
> **getRecommendedFees**(): `Promise`\<[`RecommendedFees`](../interfaces/RecommendedFees.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7127](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7127)
Recommended fees
Get recommended fee rates for different confirmation targets based on current mempool state.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-recommended-fees)*
Endpoint: `GET /api/v1/fees/recommended`
#### Returns
`Promise`\<[`RecommendedFees`](../interfaces/RecommendedFees.md)\>
***
### getRewardStats()
> **getRewardStats**(`block_count`): `Promise`\<[`RewardStats`](../interfaces/RewardStats.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7329](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7329)
Mining reward statistics
Get mining reward statistics for the last N blocks including total rewards, fees, and transaction count.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-reward-stats)*
Endpoint: `GET /api/v1/mining/reward-stats/{block_count}`
#### Parameters
##### block\_count
`number`
Number of recent blocks to include
#### Returns
`Promise`\<[`RewardStats`](../interfaces/RewardStats.md)\>
***
### getSyncStatus()
> **getSyncStatus**(): `Promise`\<[`SyncStatus`](../interfaces/SyncStatus.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7004](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7004)
Sync status
Returns the sync status of the indexer, including indexed height, tip height, blocks behind, and last indexed timestamp.
Endpoint: `GET /api/server/sync`
#### Returns
`Promise`\<[`SyncStatus`](../interfaces/SyncStatus.md)\>
***
### getText()
> **getText**(`path`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1157](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L1157)
Make a GET request and return raw text (for CSV responses)
#### Parameters
##### path
`string`
#### Returns
`Promise`\<`string`\>
#### Inherited from
`BrkClientBase.getText`
***
### getTx()
> **getTx**(`txid`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7020](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7020)
Transaction information
Retrieve complete transaction data by transaction ID (txid). Returns inputs, outputs, fee, size, and confirmation status.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction)*
Endpoint: `GET /api/tx/{txid}`
#### Parameters
##### txid
`string`
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)\>
***
### getTxHex()
> **getTxHex**(`txid`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:7036](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7036)
Transaction hex
Retrieve the raw transaction as a hex-encoded string. Returns the serialized transaction in hexadecimal format.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-hex)*
Endpoint: `GET /api/tx/{txid}/hex`
#### Parameters
##### txid
`string`
#### Returns
`Promise`\<`string`\>
***
### getTxOutspend()
> **getTxOutspend**(`txid`, `vout`): `Promise`\<[`TxOutspend`](../interfaces/TxOutspend.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7053](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7053)
Output spend status
Get the spending status of a transaction output. Returns whether the output has been spent and, if so, the spending transaction details.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-outspend)*
Endpoint: `GET /api/tx/{txid}/outspend/{vout}`
#### Parameters
##### txid
`string`
Transaction ID
##### vout
`number`
Output index
#### Returns
`Promise`\<[`TxOutspend`](../interfaces/TxOutspend.md)\>
***
### getTxOutspends()
> **getTxOutspends**(`txid`): `Promise`\<[`TxOutspend`](../interfaces/TxOutspend.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:7069](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7069)
All output spend statuses
Get the spending status of all outputs in a transaction. Returns an array with the spend status for each output.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-outspends)*
Endpoint: `GET /api/tx/{txid}/outspends`
#### Parameters
##### txid
`string`
#### Returns
`Promise`\<[`TxOutspend`](../interfaces/TxOutspend.md)[]\>
***
### getTxStatus()
> **getTxStatus**(`txid`): `Promise`\<[`TxStatus`](../interfaces/TxStatus.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7085](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7085)
Transaction status
Retrieve the confirmation status of a transaction. Returns whether the transaction is confirmed and, if so, the block height, hash, and timestamp.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-status)*
Endpoint: `GET /api/tx/{txid}/status`
#### Parameters
##### txid
`string`
#### Returns
`Promise`\<[`TxStatus`](../interfaces/TxStatus.md)\>
***
### getVersion()
> **getVersion**(): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:7381](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7381)
API version
Returns the current version of the API server
Endpoint: `GET /version`
#### Returns
`Promise`\<`string`\>
***
### indexToDate()
> **indexToDate**(`index`, `i`): `Date`
Defined in: [Developer/brk/modules/brk-client/index.js:5392](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L5392)
Convert an index value to a Date for date-based indexes.
#### Parameters
##### index
[`Index`](../type-aliases/Index.md)
The index type
##### i
`number`
The index value
#### Returns
`Date`
***
### isDateIndex()
> **isDateIndex**(`index`): `boolean`
Defined in: [Developer/brk/modules/brk-client/index.js:5401](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L5401)
Check if an index type is date-based.
#### Parameters
##### index
[`Index`](../type-aliases/Index.md)
#### Returns
`boolean`
***
### listMetrics()
> **listMetrics**(`page?`): `Promise`\<[`PaginatedMetrics`](../interfaces/PaginatedMetrics.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:6957](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6957)
Metrics list
Paginated flat list of all available metric names. Use `page` query param for pagination.
Endpoint: `GET /api/metrics/list`
#### Parameters
##### page?
`number`
Pagination index
#### Returns
`Promise`\<[`PaginatedMetrics`](../interfaces/PaginatedMetrics.md)\>
***
### metric()
> **metric**(`metric`, `index`): [`MetricEndpointBuilder`](../interfaces/MetricEndpointBuilder.md)\<`unknown`\>
Defined in: [Developer/brk/modules/brk-client/index.js:6555](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6555)
Create a dynamic metric endpoint builder for any metric/index combination.
Use this for programmatic access when the metric name is determined at runtime.
For type-safe access, use the `metrics` tree instead.
#### Parameters
##### metric
`string`
The metric name
##### index
[`Index`](../type-aliases/Index.md)
The index name
#### Returns
[`MetricEndpointBuilder`](../interfaces/MetricEndpointBuilder.md)\<`unknown`\>
***
### searchMetrics()
> **searchMetrics**(`metric`, `limit?`): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:6976](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L6976)
Search metrics
Fuzzy search for metrics by name. Supports partial matches and typos.
Endpoint: `GET /api/metrics/search/{metric}`
#### Parameters
##### metric
`string`
##### limit?
`number`
#### Returns
`Promise`\<`string`[]\>
***
### validateAddress()
> **validateAddress**(`address`): `Promise`\<[`AddressValidation`](../interfaces/AddressValidation.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:7345](https://github.com/bitcoinresearchkit/brk/blob/54827cd0a2357417adb8631eb8f53a78e848b39a/modules/brk-client/index.js#L7345)
Validate address
Validate a Bitcoin address and get information about its type and scriptPubKey.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-validate)*
Endpoint: `GET /api/v1/validate-address/{address}`
#### Parameters
##### address
`string`
Bitcoin address to validate (can be any string)
#### Returns
`Promise`\<[`AddressValidation`](../interfaces/AddressValidation.md)\>
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