List of OnChain Data API projects in Web3 (2026)

Taostats implements RESTful API architecture providing programmatic access to Bittensor blockchain data, supporting real-time queries and historical analytics. The system enables developer integration through standardized endpoints and authentication protocols.

SolSentry API is a public REST interface exposing the same operator threat-intelligence engine used across SolSentry's other surfaces. It returns operator and token risk profiles, deployment timelines, drain traces, bot-cluster data, and network statistics as JSON, with read endpoints available without authentication. Selected endpoints also support per-call micropayments so autonomous agents can pay for access without registering an account.

BlockRazor is a Web3 transaction infrastructure platform for wallets, decentralized exchanges, trading bots, searchers, and quantitative trading systems. It provides transaction submission services including private RPC routing, block building, and gas sponsorship, alongside low-latency real-time data streams covering pending transactions, blocks, node synchronization, and network fee data. The platform routes transactions through private paths to reduce exposure to sandwich and frontrunning attacks while sharing a portion of backrun value with users as rebates, and it delivers early transaction and block signals to support latency-sensitive trading strategies. Users access all services through a unified account and dashboard covering multiple blockchain networks.

Top Ledger Analytics Platform is an SQL-based analytics platform that decodes Solana blockchain data into queryable tables, enabling dashboard creation, wallet analysis, and competitive insights through Trino SQL queries and visualization tools.

No-code analytics tool that indexes Solana wallet activities across DEXs, NFTs, DePIN, and perpetuals, providing behavioral analysis, segmentation, and CSV export capabilities for wallet profiling.

Solana Beach API is a public REST API providing structured access to Solana network data. It exposes endpoints for validator lists, stake accounts, staking rewards, block information, transaction previews, and cluster-level metrics such as skip rate and yield breakdowns. Developers and researchers use it to programmatically retrieve indexed on-chain data for building applications or conducting analysis without operating their own infrastructure.

Crypto-as-a-Service provides API infrastructure for businesses to integrate cryptocurrency functionality into their platforms. The system enables KYC verification, wallet services, and transaction processing for enterprise clients through white-label solutions.

TON API is a hosted on-chain data service for the TON blockchain. It provides REST, streaming, and webhooks endpoints to read accounts, jettons, NFTs, events, and transactions, with extras like emulation, gasless flows, and SDKs so developers can build and run dApps on TON.

A specialized data analytics platform built on ClickHouse technology for analyzing blockchain and cryptocurrency data at scale.

Starkscan API delivers programmatic access to Starknet blockchain data through REST endpoints. Developers can query information about blocks, transactions, contracts, and events with pagination support. The API includes specialized endpoints for NFT data and advanced analytics in the PRO tier.

Enterprise-grade data pipelines for curated ETL processes, enabling integration of real-time and historical on-chain data for analytics and insights without managing multiple IDLs or maintaining full ledger copies.

Resolution Service API provides blockchain domain name resolution through HTTP endpoints, enabling developers to resolve domain metadata and records from UNS, CNS, and ENS naming services. The system caches blockchain events for rapid domain data retrieval without direct blockchain interaction.

Neynar API provides REST endpoints for accessing Farcaster protocol data, enabling developers to read user profiles, casts, feeds, and social graph information through standardized interfaces.

Developer platform to build, run and query custom Solana indexers with real-time data streaming and instant APIs.

Peer-to-peer indexing layer and API that lets developers query Solana data in real time.

Safari Web3 Analytic Platform provides marketing attribution tools, enabling projects to track key metrics like customer acquisition cost (CAC), ROI, and customer lifetime value (LTV) using both on-chain and off-chain data.

DigNow Data Platform provides unified API access to verified crypto data through AI-powered aggregation and multi-source integration. The system includes specialized AI agents for market intelligence, project health monitoring, and regulatory compliance analysis, processing data from multiple sources with standardized formatting.

Vaults.fyi API delivers standardized market data and transaction support for DeFi protocols, providing access to yield analytics across multiple networks. The system enables portfolio tracking and generates non-custodial transaction payloads for integration into third-party applications.