DATA STREAMS · gRPC · Kafka · WebSocket · 40+ chains

Real-time blockchain data streams on every channel

One real-time firehose across 40+ chains — DEX trades, transfers and new tokens on EVM and Solana, decoded and ready. Stream it your way: binary gRPC in under 100ms, durable Kafka with replay, browser-ready WebSocket subscriptions, or straight into your cloud warehouse.

1.4M/s
events streamed at peak
40+
chains, one schema
4channels
gRPC · Kafka · WebSocket · Cloud
<100ms
gRPC flagship latency
Subscription.realtimeLIVEstream.graphql · WebSocket / gRPC / Kafka
Block · slotEventToken · venueValue
200 · stream · realtimestreaming.bitquery.io
Trusted by 40,000+ developers & teams like
Binance logoChainalysis logoTRM Labs logoNansen logo0x logoCoinMarketCap logoCoin Metrics logoBybit logoLukka logo3Commas logoNexo logoTether logo
40+
Chains supported
1PB+
Blockchain data indexed
10B+
API calls / month
99.9%
Production uptime
01
Delivery channels

Pick your latency. Same data underneath.

Every channel reads the same decoded, cross-chain event stream — choose the transport that fits your job. gRPC for raw speed, Kafka for durability, WebSocket for zero infra, Cloud when the data should live in your warehouse.

FastestgRPC · CoreCast
<100ms

Binary Protobuf firehose — the lowest-latency channel we ship. Built for snipers, MEV and HFT bots that react in milliseconds.

Best for: bots, MEV, HFT
Kafka
<500ms

Enterprise-grade Protobuf streams with guaranteed delivery and offset replay — never drop an event, backfill on reconnect.

Best for: pipelines, durability
WebSocket
~1s

Browser-ready GraphQL subscriptions with server-side filtering and USD values out of the box. Zero infrastructure to run.

Best for: dashboards, alerts
Cloud
batch

Stream straight into Snowflake, BigQuery, S3 or Azure as managed datashares — no consumer to operate, query where your data lives.

Best for: warehouses, analytics
02
What you can stream

Every event type, across every chain.

One subscription spans the data that matters — trades, transfers, launches, balances, mempool and contract events — decoded into a typed schema and filterable by token, wallet, market or program.

DatasetScopeWhat streams
DtDEX trades40+ chainsDecoded buys, sells and swaps across every AMM and aggregator, with USD value
TrTransfers40+ chainsNative, ERC-20, SPL and NFT transfers the moment they confirm
NtNew tokens40+ chainsFresh token creations, first liquidity and bonding-curve launches
BlBalances40+ chainsLive wallet balance updates as positions move on-chain
MpMempool40+ chainsPending and unconfirmed transactions before they land in a block
CeContract events40+ chainsDecoded smart-contract logs, calls and emitted events
+ slots, blocks, instructions & every dataset on the V2 schema
03
Forget the streaming stack

Building a streaming stack off raw nodes is its own project.

Raw nodes give you undecoded firehose data and reconnect headaches across every chain. Bitquery hands you decoded events on the transport you want — one schema, 40+ chains, fully managed.

What you're doing
Raw nodes / your own stack
Bitquery Data Streams
Read 40+ chains in real time
A node per chain to run
One subscription, every chain
Decode trades & transfers
A parser per protocol
Decoded events out of the box
Lowest latency
Tune your own infra
gRPC under 100ms, managed
Never miss an event
Handle reconnects yourself
Kafka offset replay
Pipe into your warehouse
Build and run the pipeline
Cloud datashares, no consumer
04
Build it real-time

What teams ship on Data Streams.

Every one is a filter on the same firehose — subscribe on any channel and react the moment the event lands.

gRPC

Trading & sniping bots

Stream decoded DEX trades and new token launches across EVM and Solana in milliseconds, and fire orders before the rest of the market reacts.

Read the docs
Kafka

Real-time analytics

Pipe the durable firehose into your warehouse with offset replay for live dashboards and on-chain analytics that never drop an event.

Read the docs
WebSocket

Alerting & monitoring

Subscribe to exactly the transfers, balances or contract events you filter for and push wallet, whale and liquidity alerts straight from the browser.

Read the docs

What teams say about our data

"We did a thorough search of the market for the best onchain data. Bitquery came out on top — and now powers all live prices across Nansen. We don't think of them as a vendor. They're a partner."

A
Alexander Karsten
Nansen
<100ms
gRPC flagship stream latency
40+
chains on one schema
4
channels: gRPC · Kafka · WS · Cloud

Bitquery does the hard work of parsing blockchain transaction data into a usable form so that we don't have to. We use their interface to diagnose issues with complex transactions and their analytics as a starting point for our own.

0x Protocol logo
Alex Knaggs
0x Protocol

They proved they had the technology to deliver sophisticated data solutions. We extended our support through the Binance X fellowship — building an open-source library of visualization widgets on their blockchain data.

Director, Binance X logo
Flora Sun
Director, Binance X

The complex raw data is available at different levels of detail and from different viewpoints — whether we need simple aggregated transfers or parameters for failed contract calls. The support is responsive, friendly and quick.

Backend Developer, Blockpit logo
Jan Dreske
Backend Developer, Blockpit

Partnering with Bitquery has been highly cost-effective — leveraging their established infrastructure rather than building our own let us rapidly expand our blockchain support and reach a much broader segment of on-chain users.

Co-Founder, Syla logo
Nick Christie
Co-Founder, Syla

Bitquery's products are very intuitive and easy to use. We currently use their products to obtain DEX-related trading and liquidity information, which saves us the manpower and tedious technical details required to develop our own system. Their excellent technical team deserves special praise; they provide near-24/7 support and resolve issues quickly. I greatly appreciate their products and work ethic.

Ourbit logo
Data Team
Ourbit

Bitquery provides the infrastructure we rely on every day. Fast, reliable, and comprehensive across the chains that matter to our business.

Webacy
Webacy
webacy.com
05
Pricing

Start free. Scale when you ship.

Query every blockchain on every plan — no chain is paywalled. Move to commercial when you need volume, SLAs and bulk datashares.

Developer
$0 / month
Free plan for developers or small projects.
  • All blockchains, all plans
  • 10 requests / minute
  • 2 streams for testing
  • GraphQL IDE access
Get started free
Most popular
Commercial
Custom
Tailored solutions for business and enterprise.
  • Scalable calls, no throttling
  • SQL, Cloud, Kafka & more
  • 24/7 engineering access
  • Dedicated onboarding & SLA
Talk to sales
Datashares
Custom
Bulk historical & real-time data on your cloud.
  • Snowflake, BigQuery, S3, Azure
  • No setup or infrastructure
  • Structured for AI agents & MCP
  • Audit data for custodians
Talk to sales
FAQ

Real-time streaming, answered.

What are Bitquery Data Streams?
Data Streams is Bitquery's real-time feed of decoded on-chain events — DEX trades, transfers, new tokens, balances, mempool and contract events across 40+ chains — delivered over gRPC, Kafka, WebSocket or straight into your cloud warehouse.
Which channel should I use?
Use gRPC for the lowest latency (under 100ms, ideal for bots and MEV), Kafka for guaranteed delivery and offset replay, WebSocket for zero-infra browser subscriptions, and Cloud datashares to stream into Snowflake, BigQuery, S3 or Azure.
How low is the latency?
The gRPC channel targets sub-100ms from chain to your socket using binary Protobuf. Kafka lands in under 500ms, and WebSocket GraphQL subscriptions arrive in around a second.
Which chains and data are covered?
40+ chains across EVM (Ethereum, BSC, Base, Arbitrum, Polygon and more), Solana and Tron — streaming DEX trades, transfers, new tokens, balance updates, mempool transactions and decoded contract events on the V2 schema.
Can I replay missed data?
Yes. Use the Kafka channel for guaranteed delivery and offset replay so you can backfill on reconnect, and the same V2 GraphQL schema for historical reads.
How do I get started?
Grab a free API key at account.bitquery.io, then connect to streaming.bitquery.io and subscribe with the schema from the docs.

Stream every chain in real time.

Free API key, decoded events across 40+ chains, and your choice of channel — gRPC, Kafka, WebSocket or Cloud. Subscribe and react to the next block.

No credit card · 10K free points for your first month · gRPC · Kafka · WebSocket · Cloud