> For the complete documentation index, see [llms.txt](https://docs.blockrazor.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockrazor.io/streams/node-stream/robinhood-chain/direct-sequencer-feed.md).
# Robinhood Chain Direct Sequencer Feed
### What Is the Direct Sequencer Feed?
Compared with the Node-required Sequencer Feed, the Direct Sequencer Feed does not require node deployment. Standard clients can receive the latest blocks directly, enabling lower-latency tracking of on-chain signals. It is well suited for use cases such as sniping and copy trading that do not depend on full node state synchronization.
Please note that the Direct Sequencer Feed may skip blocks during periods of network congestion.
### Price
The price is $80 per unit per day and $800 per unit per month. Subscribe
### Endpoint
### Usage Instructions
{% stepper %}
{% step %} Subscribe **BlockRazor Sequencer Feed**
{% endstep %}
{% step %}
**Retrieve the auth from the portal and append it as the URI to the WSS URL.**
wss\://us.robinhood-feeder.blockrazor.io/ws/{authToken}
{% endstep %}
{% step %}
**Choose a WebSocket Client and Establish a WSS Connection**
Use any standard WebSocket client, such as a WebSocket library for Node.js, Go, Python, or Rust. There is no need to deploy a Robinhood Chain node or configure `--node.feed.input.url`.
{% endstep %}
{% step %}
**Receive and parse the data. The parsed data structure is as follows:**
{% code overflow="wrap" %}
```json
{
"version": 1,
"messages": [
{
"sequenceNumber": 50543784,
"message": {
"message": {
"header": {
"kind": 3,
"sender": "0xa4b000000000000000000073657175656e636572",
"blockNumber": 25872577,
"timestamp": 1788146984,
"requestId": null,
"baseFeeL1": 0
},
"l2Msg": {
"encoding": "Nitro L2 message",
"kind": 3,
"kindName": "Batch",
"decodedByteLength": 3487,
"transactionCount": 10,
"items": [
{
"index": 0,
"messageKind": 4,
"messageKindName": "SignedTx",
"messageLength": 244,
"transaction": {
"hash": "0xc4d8935f3e63b7b4…1e46fd37",
"from": "0x0dd10d651d18bc70594cb070e1117b6cd5e4a8a4",
"type": 2,
"typeName": "EIP-1559",
"chainId": 4663,
"nonce": 901,
"maxPriorityFeePerGas": 1,
"maxFeePerGas": 466288000,
"gasLimit": 120000,
"to": "0x000000000022d473030f116ddee9f6b43ac78ba3",
"value": 0,
"input": "0x87517c4500000000…6a94fc2f",
"accessList": [],
"yParity": 0,
"r": "0x1a6881f8f30266eb…090c7b15",
"s": "0x15e0901b330dfdba…0e9eb53a",
"rawTransaction": "0x02f8f08212378203…0e9eb53a"
}
},
{
"index": 2,
"messageKind": 4,
"messageKindName": "SignedTx",
"messageLength": 341,
"transaction": {
"hash": "0xef96fbbeb7072b85…6c67ee47",
"from": "0x137fe0e0fdbfe6487588f0ef842f418bbb738b8e",
"type": 0,
"typeName": "Legacy",
"chainId": 4663,
"nonce": 14,
"gasPrice": 250000000,
"gasLimit": 400000,
"to": "0xcaf681a66d020601342297493863e78c959e5cb2",
"value": 40000000000000,
"input": "0x04e45aaf00000000…00000000",
"v": 9362,
"yParity": 1,
"r": "0xe65d56b7f3eb63d7…4656bb9c",
"s": "0x4362c24ab37d7590…88c290ce",
"rawTransaction": "0xf901510e840ee6b2…88c290ce"
}
},
{
"index": 4,
"messageKind": 4,
"messageKindName": "SignedTx",
"messageLength": 119,
"transaction": {
"hash": "0x00f4bb0661c05fe8…3938c8bf",
"from": "0x6ae3de978e63b63e8486d1f495339633495d8264",
"type": 2,
"typeName": "EIP-1559",
"chainId": 4663,
"nonce": 3,
"maxPriorityFeePerGas": 234192000,
"maxFeePerGas": 542634600,
"gasLimit": 35010,
"to": "0xc45aa399aa75ace0ae56c372898abcb36d33161f",
"value": 330170416874734,
"input": "0x",
"accessList": [],
"yParity": 1,
"r": "0xdda460f047c07f2a…67caa4a0",
"s": "0x5f82128ed043cc80…4d2f6024",
"rawTransaction": "0x02f8738212370384…4d2f6024"
}
}
]
},
"l2MsgBase64": "AwAAAAAAAAD0BAL48I…jqF1iw=="
},
"delayedMessagesRead": 193164
},
"blockHash": "0x220c2e737333e10d…2e261230",
"signatureV2": "Rg3J2yhBQ8pxYUqc6e…xkNk7wA=",
"blockMetadata": null
}
]
}
```
{% endcode %}
{% endstep %}
{% endstepper %}
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.blockrazor.io/streams/node-stream/robinhood-chain/direct-sequencer-feed.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.