# SQD — Full Context

> The onchain data layer — validated, real-time blockchain data from 225+ networks through a single streaming API.

## Overview

SQD (formerly Subsquid) is a blockchain data infrastructure company that provides validated, real-time onchain data from 225+ networks through a single streaming HTTP API.

The company was founded in 2021 and is headquartered in Zug, Switzerland (Subsquid Labs GmbH).

## Architecture

SQD's architecture has five components:

### 1. SQD Network (Decentralized Data Lake)
- 2,000+ worker nodes storing and serving blockchain data
- Data replicated across independent operators (10–34x replication range)
- Data stored in immutable Parquet format for reproducibility
- Worker node software is open-source (AGPL-3.0): https://github.com/subsquid/worker-rs

### 2. Portal API (Data Access Layer)
- Streaming HTTP API using NDJSON (newline-delimited JSON)
- Single endpoint for 225+ EVM, Solana, Bitcoin, and Hyperliquid networks
- Arbitrary block ranges in a single request (genesis to head)
- Pre-decoded logs, transactions, traces, and state diffs
- Public endpoint available with no API key required
- Playground: /portal

### 3. Squid SDK (ETL Framework)
- TypeScript framework for batch-processing onchain data
- Processes thousands of blocks per batch (not one-by-one like RPC)
- Built-in support for PostgreSQL, BigQuery, S3, Parquet outputs
- Type-safe ABI decoding with code generation
- Licensed under Apache-2.0
- Packages: `@subsquid/evm-processor`, `@subsquid/solana-processor`

### 4. Pipes SDK (Composable Streaming Pipelines)
- TypeScript streaming library for building custom data pipelines
- Composable — chain transforms, filters, and outputs together
- Direct output to ClickHouse, BigQuery, Snowflake, Postgres, Parquet/S3
- No intermediate storage layer required
- Local development dashboard (Pipes UI) for monitoring and debugging
- Scaffolding CLI: `npx pipes init` to bootstrap projects
- Docs: https://beta.docs.sqd.dev/en/sdk/pipes-sdk/overview

### 5. SQD Cloud (Managed Platform)
- Managed deployment for Squid indexers
- Auto-scaling, monitoring, and alerting built in
- URL: https://app.subsquid.io
- Deployment via Git push or CLI (`sqd deploy`)

## Supported Data Types

### EVM Networks (Ethereum, Base, etc.)
- Blocks (header, timestamp, gas, extra data)
- Transactions (full decoded, including failed)
- Event logs (pre-decoded with ABI, all topics and data)
- Internal traces (call, create, delegatecall, staticcall, selfdestruct)
- State diffs (storage slot changes per transaction)
- Receipts (status, gas used, cumulative gas, logs bloom)

### Solana
- Transactions with full instruction decoding
- Token balances and transfers
- Program logs
- Rewards
- Same API interface as EVM chains

### Bitcoin
- Transactions (txid, size, weight, version, locktime)
- Inputs (UTXO consumption, spending from addresses, coinbase)
- Outputs (UTXO creation, receiving to addresses, script types)
- Supports Taproot (P2TR), SegWit, and legacy script types

### Hyperliquid
- Trade fills (executions, PnL, fees, routing)
- Order actions (orders, cancels, transfers, leverage updates)
- Builder and vault filtering
- Direction filtering (Open/Close Long/Short)

## Products Detail

### Portal API
- **Protocol**: HTTP POST with JSON body, streaming NDJSON response
- **Authentication**: None required for public endpoint; API key for higher tiers
- **Rate limit**: 20 requests per 10 seconds
- **Playground**: /portal
- **Networks**: EVM (Ethereum, Base, etc.), Solana, Bitcoin, Hyperliquid

### Squid SDK
- **Language**: TypeScript
- **Packages**: `@subsquid/evm-processor`, `@subsquid/solana-processor`
- **Output targets**: PostgreSQL, BigQuery, S3, Parquet, CSV
- **Key feature**: Batch processing — processes thousands of blocks per request

### Pipes SDK
- **Language**: TypeScript
- **CLI**: `npx pipes init` for project scaffolding
- **Output targets**: ClickHouse, BigQuery, Snowflake, Postgres, Parquet/S3
- **Key feature**: Composable streaming — chain transforms and filters, pipe directly to your warehouse
- **Docs**: https://beta.docs.sqd.dev/en/sdk/pipes-sdk/overview

### SQD Cloud
- **URL**: https://app.subsquid.io
- **Deployment**: Git push or CLI (`sqd deploy`)
- **Monitoring**: Built-in dashboards, alerting, log aggregation

### SQD Network
- **Type**: Decentralized physical infrastructure network (DePIN)
- **Token**: $SQD (used for staking, delegation, worker rewards)
- **Nodes**: 2,000+ globally distributed worker nodes
- **Storage**: Immutable Parquet chunks, content-addressed

## Use Cases

### DeFi & Trading
Track swap, mint, burn, and sync events across AMMs on any chain. Cross-chain pool indexing and validated event logs. Used by protocols including Morpho, GMX, and PancakeSwap.

### Analytics & Research
Historical and real-time data for dashboards, research platforms, and onchain intelligence. Full block range queries from genesis to head in a single request.

### AI Agents
Public endpoint requiring no API keys — agents can query directly. Pre-decoded JSON responses (no ABI parsing needed). MCP server available for natural-language blockchain data queries: https://github.com/subsquid/sqd-mcp

### Wallets & Payments
Transaction history and token balances across 225+ networks. Native support for ERC-20, ERC-721, ERC-1155 transfer indexing.

### Stablecoins
Cross-chain flow tracking for USDC, USDT, DAI, and others. Mint/burn event monitoring.

### Compliance
Complete transaction traces including internal calls (not just top-level). Event logs with full decoded parameters. Failed transactions and self-destructs are preserved, not silently dropped.

## Customers

Teams using SQD:
- **Morpho** — DeFi lending protocol
- **GMX** — Decentralized perpetuals exchange
- **PancakeSwap** — Multi-chain DEX
- **RAILGUN** — Privacy protocol
- **Deutsche Telekom** — Enterprise blockchain infrastructure

## Pricing (Portal API)

Coming soon. The public endpoint is free to use. Contact sales for dedicated portals and enterprise pricing.

## Pricing (SQD Cloud)

Pricing based on compute profile. See https://beta.docs.sqd.dev/en/cloud/pricing/pricing-details for full details.

## Links

- Website: https://sqd.dev
- Documentation: https://beta.docs.sqd.dev
- Portal Playground: /portal
- Cloud App: https://app.subsquid.io
- GitHub: https://github.com/subsquid
- MCP Server: https://github.com/subsquid/sqd-mcp
- X/Twitter: https://x.com/hellosqd
- Telegram: https://t.me/subsquid
- YouTube: https://youtube.com/@subsquid
- Blog: https://sqd.dev/blog

## All Pages

- [/](https://sqd.dev/)
- [/about](https://sqd.dev/about)
- [/api-reference](https://sqd.dev/api-reference)
- [/brand](https://sqd.dev/brand)
- [/case-studies](https://sqd.dev/case-studies)
- [/chains](https://sqd.dev/chains)
- [/changelog](https://sqd.dev/changelog)
- [/cloud](https://sqd.dev/cloud)
- [/contact](https://sqd.dev/contact)
- [/cookies](https://sqd.dev/cookies)
- [/customers](https://sqd.dev/customers)
- [/developers](https://sqd.dev/developers)
- [/ecosystem](https://sqd.dev/ecosystem)
- [/imprint](https://sqd.dev/imprint)
- [/network](https://sqd.dev/network)
- [/portal](https://sqd.dev/portal)
- [/pricing](https://sqd.dev/pricing)
- [/privacy](https://sqd.dev/privacy)
- [/sdk](https://sqd.dev/sdk)
- [/solutions/ai-agents](https://sqd.dev/solutions/ai-agents)
- [/solutions/analytics](https://sqd.dev/solutions/analytics)
- [/solutions/compliance](https://sqd.dev/solutions/compliance)
- [/solutions/defi-trading](https://sqd.dev/solutions/defi-trading)
- [/solutions/rwa](https://sqd.dev/solutions/rwa)
- [/solutions/stablecoins](https://sqd.dev/solutions/stablecoins)
- [/solutions/wallets-payments](https://sqd.dev/solutions/wallets-payments)
- [/sqd-360](https://sqd.dev/sqd-360)
- [/terms](https://sqd.dev/terms)

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Generated 2026-04-07