List of Developer Tooling companies in Web3 (2026)

CoinCraddle API is a developer API enabling integration of cryptocurrency exchange functionality into third-party applications with customizable fee structures and access to aggregated liquidity from multiple providers.

Roqqu API Services provides developer APIs enabling businesses and platforms to integrate Roqqu's payment and crypto capabilities into their own applications. Developers access endpoints for payment processing, crypto transactions, and financial service integrations through a documented API layer.

Coinone API is a developer interface exposing REST and WebSocket endpoints for market data and account operations with versioned references and real-time streams.

Swift Developer Portal is a centralized API catalogue with documentation, sandbox environments, and developer tooling for Swift service integration. The portal hosts API specifications for payments tracking, reference data, financial messaging, compliance screening, and securities services. Standards tools including MyStandards and Swift Translator support message standards management and MT-to-ISO 20022 format translation.

Roller is a command-line tool for deploying and operating RollApps on Dymension. Operators use it to run RollApp sequencers, manage full nodes, and operate eIBC clients for processing cross-chain withdrawals. The tool includes pre-built primitives for DeFi oracles, random number generation, and AI oracles to support common RollApp integrations. A companion frontend SDK, Dymension Connect, allows RollApp developers to add signless user authentication and wallet connectivity to their applications.

Covalent Network is a Decentralized data infrastructure protocol addressing long-term blockchain data availability and verifiability. The network captures raw blockchain state as Block Specimens which are enriched by Block Results Producers and stored across distributed operator nodes. Network Operators stake CXT tokens as an economic bond covering roles including Block Specimen Producer, Block Results Producer, and Ethereum Wayback Machine Light Client, with cryptographic proofs verifying data accuracy at each stage. The Ethereum Wayback Machine component preserves complete Ethereum historical state as the protocol moves toward state expiry under EIP-4444.

LavaOS provides plug-and-play API infrastructure enabling seamless integration of Lavarage's trading capabilities into external platforms. The system offers programmatic access to spot margin trading functionality for trading bots, DEXs, and DeFi applications.

RISC Zero zkVM is a zero-knowledge virtual machine that enables developers to write applications with verifiable computation in Rust and other languages.

SingularityNET Platform operates as a decentralized marketplace for AI services, enabling developers to publish, discover, and monetize AI algorithms across multiple domains including computer vision, natural language processing, and robotics through blockchain-based transactions.

Rollup Engine provides developers with tools to deploy custom Ethereum Layer 2 and Layer 3 blockchains using established frameworks like Arbitrum Nitro, Optimism Bedrock, ZK Stack, and Polygon CDK. The platform manages deployment, customization, maintenance, and security for rollups.

AbstractionKit is an open-source TypeScript SDK that provides developers with tools to build ERC-4337 and EIP-7702 smart wallets. The platform features Safe Account integration, user operation construction, gas sponsorship through integrated paymaster services, transaction bundling via Voltaire bundler infrastructure, social recovery capabilities, and includes a reference mobile wallet implementation demonstrating seedless recovery, gasless transactions, and batch operations.

dLocal Crypto API provides developer tools and SDKs for integrating stablecoin payment processing into applications. The system offers single API access to connect digital asset flows with local payment methods across multiple payment options and emerging markets.

GhostGraph is a developer tool that lets users write blockchain indexers in Solidity, define schemas, implement handlers, and query indexed data via GraphQL using hosted endpoints.

W3AP is an advertising infrastructure platform for Web3 applications. It provides SDKs, APIs, and tools that enable developers to integrate advertising capabilities into decentralized applications. The platform handles ad delivery, tracking, and reward distribution through blockchain technology.

Ash Toolkit is an open-source collection for Avalanche node operators and Subnet developers, comprising the Ansible Avalanche Collection for automated node and subnet deployment, the Ash CLI for command-line network interaction and scripting, and the Ash Rust SDK providing the underlying library for building custom Avalanche tooling. All components are available on GitHub under open-source licenses.

SwapKit is a cross-chain swap SDK and REST API for integrating non-custodial multi-chain trading into wallets, DEXs, and platforms. The system aggregates liquidity from THORChain, Chainflip, Maya Protocol, and NEAR Intents, routing transactions across multiple blockchains in a single user signature. It supports DEX aggregation, AML address screening, affiliate fee collection via on-chain router, and cross-chain transaction tracking through a partner management dashboard.

A REST API suite for programmatic access to BigONE exchange services. Covers four service areas: spot trading, wallet and asset management, instant conversion, and contract/derivatives trading. Uses JWT authentication and WebSocket streams for real-time market data and order updates. OpenAPI specifications are publicly available via GitHub.

Trading tools and APIs designed for Solana that provide ultra-low latency transaction execution, MEV protection, and real-time data streams from multiple DEXs including Raydium, Jupiter, and Pump.fun.

APIs for staking workflows and rewards data across multiple blockchain networks, allowing developers to integrate staking functionality into their applications with standardized endpoints.

Marlowe is a domain-specific language and toolkit for creating financial smart contracts on Cardano with formal verification and automated testing capabilities.

Token Hub offers no-code Smart Token deployment and management capabilities. The platform enables developers to create, configure, and deploy programmable tokens with custom business logic through a web-based interface.

Cairo Programming Language provides a way to write programs that can prove their computations are correct without revealing the actual data. It uses Rust-like syntax to help developers create smart contracts for Starknet and build applications that need mathematical proofs of correctness. The language includes tools for testing, debugging, and generating proofs, making it simpler for developers to build trustworthy blockchain applications without deep cryptography knowledge.

Walnut Debugger is a web-based transaction debugger and simulator for Starknet smart contracts, enabling developers to inspect variable states at each execution step and simulate transactions before on-chain deployment. The tool supports source-code-level debugging via contract verification, call trace inspection, and gas profiling against the CairoVM.

Kalshi API provides REST endpoints, WebSocket connections, and FIX protocol access for algorithmic trading strategies. The system supports automated event contract trading with historical data access and real-time market feeds.

Nite Interface SDK is a developer toolkit that provides smart contracts, Dusk API access, wallet builder, and payment rails for building apps and clients on the Nite Protocol.

Mimic Protocol provides blockchain automation infrastructure through task planning, intent execution, and fail-safe mechanisms. The protocol standardizes automation across networks using oracles, relayers, and coordination engines for trustless operation scheduling.

Flutterwave API is a payment processing API that enables businesses to accept payments from customers and send money to others through multiple payment methods including card payments, direct debit, bank transfers, and mobile money across African and global markets.

Telegram-based monitoring service tracking validator node health, delegation status, commission changes, and lock-up cycles with instant notification delivery. The bot enables users to monitor multiple validators and delegations, receiving alerts for network issues, validator performance changes, and staking cycle events.

Unified Web3 development platform that consolidates APIs, SDKs, smart contract deployment, custodial wallet services, gamified learning through Vottun Journey quests, and code-to-earn incentives for developers building dApps and blockchain solutions.

Walrus Sites provides developer tooling for deploying decentralized websites using Walrus storage and Sui blockchain smart contracts. The platform includes a site-builder CLI tool for converting standard web frameworks output into decentralized sites, with metadata stored on Sui and resources stored on Walrus. Sites support dynamic functionality through Sui-compatible wallet integration and Move-based smart contract programmability, accessed via portal infrastructure.

x402-secure is an open-source SDK and proxy that adds verified identity, intent checks, and agent‑native risk controls to x402 payments, powered by Trustline risk analysis.

Sui Move Analyzer is a Visual Studio Code extension providing syntax highlighting, code completion, navigation, diagnostics, and framework integration for Move smart contract development on Sui blockchain.

Esper provides browser-based verification tools for contributing authenticated web data to AI agents. The system uses cryptography and secure hardware to create verifiable information without compromising user privacy.

Sen Hub provides development infrastructure for Solana DApps through an integrated platform that enables application deployment, testing, and distribution. The system offers developer toolchains, sandbox testing environments, and marketplace distribution through Sen Store.

Storage Proof API provides developers with programmatic access to generate and verify storage proofs within applications. The API abstracts cryptographic complexity and integrates storage proof validation logic through a well-defined interface, allowing applications to implement cross-chain data verification without specialized knowledge of proof systems.

Scrypto implements asset-oriented programming through Rust-based smart contract language, providing native asset primitives and blueprint deployment system. The framework enables secure DeFi development with built-in resource management and developer royalties.

Constellation implements unified API access through SDK integration, enabling developers to interact with decentralized AI subnets. The platform provides client libraries for accessing language models, data collection services, and scientific computing resources across the Bittensor network.

DaaS provides API infrastructure enabling financial institutions to integrate digital asset capabilities including crypto trading, custody, and wallet services. The platform supports transactions across cryptocurrencies with embedded compliance tools and tokenization functionality for both fungible and non-fungible assets. Users access trading APIs, secure custody solutions, and loyalty program infrastructure through standardized integration endpoints.

BitGifty Enterprise API is a REST API suite that enables platforms to integrate crypto gift card and crypto spending services into their own applications. The Crypto Gift Card API supports bulk gift card creation and distribution, white-label customization of email templates and redemption flows, real-time transaction tracking via webhooks, and both mainnet and testnet environments. The Crypto Spend API allows third-party applications to offer mobile airtime top-ups, utility bill payments, and brand gift card purchases to users paying with cryptocurrency.

A developer toolkit enabling businesses to integrate cryptocurrency payment acceptance through the Beans platform. The SDK generates QR code payment requests, supports multi-currency transactions with automatic conversion, processes instant settlements, and provides webhook notifications for payment confirmations. Merchants can deploy point-of-sale systems, e-commerce integrations, or custom payment flows while accessing Beans network liquidity without managing individual on-ramp partnerships.

LYNC is an autonomous AI and Web3 layer that provides developers with a unified no-code platform for building on-chain products. The system integrates smart wallet infrastructure, AI agent tooling, and tokenization capabilities to enable cross-chain dApp development with reduced complexity and cost.

NDAX White Label Platform enables businesses to deploy cryptocurrency trading capabilities through plug-and-play infrastructure, providing customizable trading solutions with advanced security measures and API integration.

Brutus Energy Bot provides automated energy and bandwidth rental services on the Tron blockchain through a Telegram bot interface, API, and web platform. The system allows users to rent or provide energy and bandwidth resources, automating the resource provisioning process for Tron transactions.

A developer toolkit on Solana for unified trade execution across spot and prediction markets with smart routing, liquidity aggregation, and declarative or imperative swap flows.

Dexter MCP Server implements Model Context Protocol integration for ChatGPT, Claude, and other AI assistants, enabling authenticated agents to execute on-chain Solana operations through unified tool interfaces. The system provides OAuth2 authentication, session management, and tool bundles for wallet operations, market data retrieval, token swaps, and blockchain interactions. Developers can deploy via HTTPS transport for hosted connectors or stdio transport for local agent integration.

MCPay SDK is a developer library that adds x402 wallet payment handling to MCP clients or custom apps. It intercepts 402 responses, pays on-chain with a configured wallet, and retries the tool call for programmatic pay-per-call access.

Resolute is a unified interface for Cosmos ecosystem interactions enabling users to connect wallets, manage multisig operations, execute cross-chain transactions, and participate in governance across multiple Cosmos SDK-based blockchains through a single dashboard.

J Tools is a no-code Solana workflow platform providing token creation for SPL and Token-2022 standards, authority management, multi-DEX liquidity pool deployment across Raydium, Meteora, and Orca, Pump.fun token launches with Jito bundle execution, token distribution, swap aggregation via Jupiter, and wallet privacy tools. The platform operates through a single wallet-connected interface with transparent cost previews before transaction signing.

IDX AutoBot is a web-based platform providing on-chain tools for Solana token builders. It includes an automated market maker and volume bot with three engine tiers (V4, V6, V8) that generate trading activity for SPL tokens, along with SPL token creation, Raydium liquidity pool setup, token metadata management, bulk token distribution, holder distribution automation, and token supply management through burn and authority revocation. All tools operate non-custodially without requiring private key access.

NockApp is a framework for building applications that settle execution proofs to Nockchain. Applications use a two-component architecture: a kernel written in Hoon or Jock that compiles to the Nock instruction set architecture, containing formally verifiable application logic; and a Rust-based runtime providing a NockVM execution environment alongside I/O drivers for HTTP, file access, and gRPC networking. The kernel operates as a deterministic state machine with state persisted automatically by the runtime. Applications declare intents over Nockchain state, with off-chain logic generating zero-knowledge proofs submitted on-chain for verification. NockApps communicate with each other via gRPC for local and remote discoverability. The SDK includes stock I/O drivers, a Nockup build manager with application templates, and reference implementations including the Nockchain node and CLI wallet.