List of Developer Tooling projects on Polygon (2026)

WDK provides open-source libraries and modules for building self-custodial wallets supporting multiple blockchains. The modular architecture includes wallet modules for blockchain operations, protocol modules for DeFi integrations including swaps, bridges, and lending, and pre-built UI components for React Native. Built on Bare runtime, it supports Node.js and React Native environments, enabling deployment across mobile, desktop, embedded systems, and server applications.

MDK is an open-source developer framework that gives Bitcoin mining operators and developers unified control over mining infrastructure. It combines a backend software development kit with a modular worker and orchestration architecture that standardizes communication with miners, sensors, cooling, and electrical systems, alongside a user interface development kit for building dashboards. Developers use it to build monitoring dashboards, automated workflows, pool management tools, and analytics or optimization applications without building device-level integrations from scratch.

Polygon CDK is a developer toolkit for launching custom ZK-powered Layer 2 chains that are interoperable with the Polygon AggLayer ecosystem. It enables teams to build sovereign L2s with configurable data availability, sequencing, and execution environments.

x402 CLI is a command-line tool for testing x402-gated API endpoints, enabling developers to build and test onchain agent workflows including wallet operations and micropayments.

AggLayer CDK is a developer toolkit for integrating chains into the AggLayer cross-chain settlement network. It provides the technical components needed for chains to connect to the unified liquidity and interoperability infrastructure of the Polygon AggLayer.

Chainlink VRF generates verifiable random numbers for smart contracts through cryptographic proof mechanisms published and verified onchain. The system prevents tampering by oracle operators, developers, or miners through cryptographic verification of random value generation. VRF v2.5 supports subscription-based and direct funding payment models with LINK or native tokens.

Chainlink Automation executes smart contract functions through decentralized oracle networks monitoring onchain conditions and time-based triggers. The system automates transaction execution without centralized infrastructure, uses the same node operators securing Chainlink data feeds, and enables developers to offload operational maintenance for protocol automation workflows.

Chainlink Functions provides smart contracts with trust-minimized compute infrastructure for API data retrieval and custom computation execution. The system operates through decentralized oracle networks that execute source code in serverless environments, aggregate independent results through consensus, and support threshold-encrypted secrets for authenticated API access.

Chainlink Runtime Environment is an orchestration layer for institutional smart contracts enabling data connectivity, compliance, privacy, and cross-chain interoperability. The system compiles workflows into WebAssembly binaries executed across decentralized oracle networks, uses Byzantine Fault Tolerant consensus for operation verification, and supports Go and TypeScript SDK development.

Chainlink Runtime Environment (CRE) is a developer platform that lets builders compose modular oracle capabilities into custom cross-chain workflows using Go, TypeScript, and other languages. It re-architects Chainlink's platform into purpose-built decentralized oracle networks (DONs) per capability, coordinated through DON-to-DON communication. CRE enables institutional-grade smart contracts to operate across public and private blockchains with built-in compliance and privacy support.

Chainlink Privacy Standard is a developer framework that enables private smart contracts on public and private blockchains by combining trusted execution environments (TEEs), zero-knowledge proofs, and the DECO protocol. It provides confidential computing through Chainlink Confidential Compute, selective disclosure for regulatory compliance, and cross-chain private transaction support via CCIP. Institutions use the standard to protect trade logic, tokenized asset metadata, and KYC credentials while remaining auditable to designated counterparties.

A set of APIs and developer tools including Swap (Classic, Fusion, Fusion+), Portfolio API, Web3 RPC, security endpoints, and data APIs for tokens and pricing.

1inch Business is a set of APIs and software development kits that give developers programmatic access to token swaps, orderbook data, balances, pricing, portfolio analytics, and RPC node endpoints. Developers integrate these APIs to build trading, wallet, and agentic applications without operating their own infrastructure. The suite covers multiple blockchains and supports API key or OAuth-based authentication.

Crossmint Authentication provides user identity verification through email, social media logins, and wallet connections. The system enables progressive onboarding flows and integrates with the wallet infrastructure for identity management. Developers use it as a user management layer tightly tied into other Crossmint products.

Rollup-as-a-Service is a platform that enables enterprises to deploy custom Layer 2 rollups on Ethereum within minutes, providing enterprise-grade infrastructure with 24/7 monitoring and Web3 service integrations.

A transaction relay service that submits user requests to supported EVM networks and enables gasless or ERC‑20–paid execution via a cross‑chain Gas Tank. The SDK and API handle submission from off‑chain to on‑chain with fast inclusion and no downtime.

An ERC‑4337 bundler with support for verifying and ERC‑20 paymasters plus a unified Gas Tank on Polygon for multi‑chain sponsorship. It settles exact gas post‑execution, removes prefunding, and returns enhanced user operation tracking with real‑time status updates.

A verifiable randomness service for smart contracts. Requests are processed via Gelato Web3 Functions, with network‑specific fee premiums charged as a percentage of gas.

Fee Collector is a protocol fee aggregation service that automatically collects fees in any ERC-20 token and converts them to USDC daily. Protocols using Gelato's Paymaster & Bundler can activate fee collection in one click, eliminating manual token swaps and consolidating fragmented balances across chains into a single, stable USDC balance for simplified revenue reporting and accounting.

Chainlist is a reference directory of EVM-compatible blockchain networks providing chain IDs, native currency details, and public RPC endpoints. Users browse available networks and add them directly to compatible wallets with a single action. Developers reference the data for standardizing network integrations.

meson.to is a developer SDK that lets web3 applications accept stablecoin deposits from any supported blockchain directly into their own smart contracts. It offers link-based, JavaScript SDK, and API integration methods, embedding a branded cross-chain interface within a host application. The toolkit routes transfers through the underlying cross-chain swap protocol, handling signature verification and transaction routing, while requiring host contracts to implement a specific deposit method to receive funds. It is used by developers who want to accept multi-chain deposits without building their own bridge infrastructure.

Subgraphs implement flexible blockchain indexing through TypeScript, enabling developers to create custom GraphQL APIs from smart contract data. The system processes on-chain events and provides queryable endpoints with webhook support and automated deployment capabilities.

Mirror implements real-time data streaming pipelines that sync blockchain data directly into databases and message queues. The system enables point-and-click configuration for multiple data destinations while providing unlimited access without per-query fees.

DeFi API is an API platform that provides unified access to multiple decentralized finance protocols and applications. It enables developers to integrate DeFi functionality including token swaps across chains, liquidity provision, and interaction with various DeFi projects through standardized endpoints.

A developer toolkit to build, test, deploy, and run custom blockchain data indexers and GraphQL APIs on the SubQuery Network, helping developers deliver fast, flexible data for dApps.

Squid Widget is an embeddable React component that allows applications to integrate cross-chain swapping functionality directly into their interfaces. The widget supports customizable themes and configurations for seamless user experiences.

Squid SDK provides TypeScript libraries and examples for developers to integrate cross-chain routing capabilities into their applications programmatically. The SDK offers route calculation and transaction execution functionality.

Squid API provides REST endpoints for calculating cross-chain routes and executing transactions. The API enables developers to access Squid Router functionality without client-side SDK integration.

Core smart contract infrastructure consolidating liquidity across all Fluid protocols, enabling seamless capital flow between lending, borrowing, and trading functions through automated supply/borrow operations.

Portal Enclave MPC API provides server-side blockchain signing through TSS MPC cryptography combined with AWS Nitro Secure Enclaves. The system enables sub-second transaction signing for EVM-compatible and Solana smart contracts through RESTful API endpoints.

Portal Account Abstraction enables gas sponsorship, transaction batching, and programmable on-chain functionality through smart contract wallets. The system integrates with Portal's MPC infrastructure to provide configurable account abstraction features.

Haiku API provides programmatic access to the Declarative Transaction execution engine through REST endpoints. The strategy execution flow accepts a target portfolio state via /quote and converts it to an unsigned EVM transaction via /solve; a natural language flow processes plain-text commands via /buildIntentNaturalLanguage. The system handles cross-chain routing and protocol interactions with all-or-nothing execution guarantees.

QuickAlerts is a feature that provides real-time notifications about onchain events, helping users stay updated with the latest blockchain activities

Software development kit for easy integration of QuickNode services into applications.

Full-stack toolkit for building, deploying, and managing web3 applications on EVM-compatible blockchains with smart contract tools, SDKs, and infrastructure.

thirdweb Contracts offers audited smart contract templates and deployment tools for tokens, NFTs, marketplaces, and DAOs across any EVM-compatible blockchain with modular and upgradeable architecture.

thirdweb Engine is a backend server that reads, writes, and deploys contracts at production scale with automatic nonce management, stuck transaction resubmission, and gas fee management.

Topper is a fiat-to-crypto on-ramp and crypto-to-fiat off-ramp delivered through an embeddable widget and developer APIs for business partners and wallets. Consumers buy crypto directly to a self-custodial wallet using cards, digital wallets, or bank transfers, and sell crypto to receive fiat on a linked debit card. The product supports recurring purchases and integrates via a web SDK, mobile SDK, REST API, webhooks, and single sign-on for partner applications.

Implements rollup infrastructure through optimized node services, enabling Layer 2 blockchain deployment and management. The system supports multiple rollup architectures with integrated monitoring and scaling capabilities.

Ramper SDKs is a developer toolkit that embeds wallet creation and fiat on-ramp flows inside third-party applications. It allows developers to onboard users into self-custody wallets and accept fiat payments without building this infrastructure themselves. The toolkit is used by application developers building Web3 products across multiple blockchains.

NFTScan Developer Platform delivers comprehensive NFT data services through REST APIs, enabling developers to access ERC-721 and ERC-1155 asset information, transaction records, collection statistics, and marketplace data across multiple blockchain networks.

NFTScan Site provides professional management backend and site services for NFT collections, NFT marketplaces, and NFTfi projects within the NFT ecosystem.

Range API provides access to blockchain intelligence infrastructure, enabling address screening, compliance checks, and real-time transaction risk detection through programmatic interfaces.

0x Gasless API is a developer tool that enables token swaps without requiring users to hold native chain tokens for gas. It sponsors transaction fees on behalf of end users by abstracting gas payments and approvals into the backend, covering both gasless approvals and gasless swaps in a single flow. The API integrates into wallets and applications to remove a common onboarding friction point for users new to on-chain trading.

Kiln Connect is a developer tooling suite offering a unified set of APIs for staking operations across proof-of-stake protocols. It includes a transaction crafting API for programmatically creating staking and unstaking transactions and a reporting API for real-time monitoring of yields and validator performance. The service is validator-agnostic, allowing wallets, custodians, and exchanges to integrate staking data and operations without depending on Kiln-run validators, and it interoperates with third-party custody providers for signing.

Kiln Widget is a no-code embeddable platform that enables wallets, custodians, exchanges, and technology providers to offer staking and DeFi yield opportunities to their users. It allows platforms to launch a fully branded standalone dApp or embed the interface directly within an existing product, with a customizable editor for aligning the experience to a platform's brand. The widget connects to staking and DeFi yield sources, including dedicated validators, staking pools, and multiple lending protocols, without requiring integrators to build their own infrastructure.

An API and SDK for developers to integrate multi-chain token swaps into their applications, supporting both DEX aggregation and cross-chain transactions.

MPC Node Suite is a fully privatized, white-label MPC-TSS infrastructure that enables businesses to build keyless wallet and custody systems at scale. Server-side middleware secured by Intel SGX trusted execution technology works alongside SDKs for web, iOS, and Android to provide distributed key generation, signing, refreshing, and recovery with configurable signing thresholds. The suite supports hierarchical deterministic key derivation and multiple blockchain networks, serving exchanges, payment service providers, wallet service providers, and self-custody service providers building cold-wallet and custody applications.

StaFi LSaaS is a developer toolkit that enables Layer 1 teams, project developers, and startups to deploy liquid staking protocols without building infrastructure from scratch. The stack provides modular smart contract frameworks for EVM and Cosmos environments, supporting both LST and LRT deployment. Builders configure staking pool logic, validator delegation, and token issuance through pre-built components maintained by the StaFi development team.

Tatum Platform is a unified blockchain development toolkit providing RPC nodes, APIs, SDKs, and developer tools for building Web3 applications. The system offers access to multiple blockchain protocols through standardized interfaces while maintaining cross-chain compatibility and enterprise-grade infrastructure.

Unified AI platform providing smart contract generation and auditing, trading analysis, trading assistance and blockchain information through conversational AI interfaces trained on Web3 data.

Rango SDK provides programmatic access to Rango's cross-chain aggregation functionality through a JavaScript/TypeScript library. Developers can integrate token-swapping capabilities across multiple blockchains into their applications with comprehensive API support.

Rango Widget enables websites and applications to add cross-chain swap functionality through a customizable UI component. The widget offers configuration options through a visual playground and supports integration with popular front-end frameworks.

Prime SDK is a development toolkit that removes Web3 usability barriers by providing ERC-4337 account abstraction infrastructure. The SDK enables developers to build applications with gasless transactions, transaction batching, and cross-chain functionality across multiple EVM networks.

Modular SDK is an ERC-7579 development toolkit that enables customizable smart accounts through modular architecture. The SDK allows developers to enhance security and user experience by integrating various modules for account functionality and supports EntryPoint 0.7.0.

TransactionKit is a React library for Web3 development that enables transaction batching, cross-chain functionality, and gasless transactions. The library allows frontend developers to integrate smart account features without deep blockchain knowledge through React components.

Skandha is an ERC-4337 compliant bundler service that collects multiple UserOperations and combines them into single transactions to reduce gas costs. The TypeScript bundler supports EIP-7702, EntryPoint versions 0.6, 0.7, and 0.8, and provides built-in MEV protection with shared mempool functionality.

Arka Paymaster Service is an open-source ERC-4337 compliant paymaster that enables sponsored and gasless transactions. The service allows users to pay gas fees with stablecoins and enables projects to cover transaction costs for their users through smart account sponsorship.

Consumer App manages decentralized credit, enabling card management and financial service access without selling crypto.

Sphere API is a developer toolkit providing RESTful endpoints and SDKs for embedding global stablecoin payments into third-party platforms. It supports payment processing, fiat and crypto conversions, and multi-chain transfers, allowing businesses to build on-ramp, off-ramp, and settlement functionality without extensive engineering. The toolkit is used by platforms seeking to embed payment rails across multiple blockchains and stablecoins.

OpenZeppelin Contracts is a library of modular and reusable smart contracts available for Ethereum-compatible blockchains in Solidity and for Starknet in Cairo, implementing standards like ERC20 and ERC721 with focus on security, gas efficiency, and best practices.

A secure operations platform for smart contract development that enables secure automation, monitoring, and management of blockchain applications across 30+ networks.

Linkio API is a developer API that lets applications and websites integrate stablecoin and fiat FX conversion directly into their own products. It exposes endpoints for initiating on-ramp and off-ramp transactions, generating payment links, checking rates, and monitoring transaction status through webhooks. Developers building remittance, checkout, wallet, or payroll products use it to add currency conversion without operating their own compliance or settlement infrastructure.

GetBlock AppChain Launcher is a custom blockchain deployment services with automated infrastructure provisioning, enabling organizations to launch dedicated blockchain networks. The system provides end-to-end blockchain creation and management capabilities.

Socket Liquidity Aggregator API provides developers with endpoints for cross-chain bridging, token swapping, and route optimization. The system offers gas price data, token balances, bridge status tracking, and transaction building capabilities across supported networks.

AppKit implements wallet connectivity and onchain UX infrastructure through modular SDK architecture, enabling wallet logins, multichain support, and user analytics. The system provides social authentication, embedded wallet creation, and transaction management while maintaining cross-platform compatibility.

Meru API is a stablecoin infrastructure platform that lets developers and fintechs embed virtual US bank accounts, European IBANs, stablecoin on-ramp and off-ramp, global payouts, KYC and KYB checks, and digital wallets into their own products through a single API. Businesses integrate the API to build remittance, payroll, and financial products while Meru manages regulatory compliance across jurisdictions. The platform processes fiat and stablecoin payins and payouts across multiple blockchains and local payment rails.

A development kit for building smart account modules that work across all ERC-7579 compliant accounts. ModuleKit provides standardized interfaces, testing frameworks, deployment scripts, and third-party integrations for module development.

An API for creating, minting, and managing ERC‑20 tokens with options such as mintable, burnable, and gasless tokens, plus metadata updates and webhooks.

A middleware SDK providing cross-chain bridging, liquidity aggregation, and smart wallet functionality for developers building DeFi applications across multiple blockchains.

Archax Tokenisation Engine enables creation and management of digital tokens representing real-world assets through multi-chain deployment infrastructure, supporting issuance of tokenized funds, bonds, equities, commodities, and stablecoins across integrated blockchain protocols.

Archax Stablecoin Service provides end-to-end stablecoin issuance infrastructure including regulatory structuring, smart contract deployment, reserve management, and market integration across multiple blockchain protocols for institutional clients and businesses.

Archax Treasury Solutions provides access to regulated money market funds and yield-bearing instruments through tokenized representations, enabling stablecoin holders to convert holdings into yield-generating assets with institutional custody and regulatory compliance.

Nirvana Cloud is a bare metal cloud platform optimized for blockchain, AI, and real-time workloads, combining compute, storage, networking, and orchestration into a single stack. It provides high-clock virtual machines, accelerated block storage with sustained IOPS and sub-millisecond latency, and a private low-latency networking layer for connecting to external clouds without egress fees. A managed Kubernetes service handles cluster provisioning and autoscaling, while isolated agent sandboxes let developers run and checkpoint autonomous AI agents. Users deploy validators, RPC nodes, data pipelines, inference workloads, and trading infrastructure while offloading hardware management to the platform.

Zerion API provides developers with real-time blockchain data access through REST and WebSocket endpoints, enabling wallet balance queries, transaction history retrieval, and DeFi position tracking across multiple blockchain networks.

Zerion DeFi SDK is an open-source smart contract system implementing protocol adapters for standardized integration with DeFi protocols. The SDK provides on-chain balance retrieval, derivative token metadata, and automated protocol registry updates through modular adapter contracts. Developers deploy protocol-specific adapters to the Adapter Registry enabling automatic integration across applications without manual protocol implementation.

Sign Protocol provides omni-chain attestation infrastructure through smart contracts and APIs, enabling cross-chain verification of information. The system supports multiple blockchains while maintaining decentralized attestation standards.

CoinTool is a no-code blockchain toolbox that enables token creation, batch token distribution, and wallet management across multiple EVM and non-EVM networks. Users deploy standard token contracts, send tokens to multiple addresses in one transaction, generate wallets in bulk, check allowances, and query airdrop eligibility through a browser-based interface without writing code.

A browser extension displaying real-time gas price information across Bitcoin, Solana, and over 80 EVM-compatible networks.

Noves App provides a unified platform for blockchain data services, enabling access to various APIs, tools, and features including transaction inspection, data export for tax purposes, and integration solutions across 80+ blockchain networks.

Foresight API analyzes unsigned transactions to show what they will do before execution, providing plain-English descriptions and simulations of anticipated asset transfers and contract interactions.

NodeOps Network is a chain-agnostic, permissionless orchestration layer for general-purpose compute that coordinates decentralized infrastructure across a distributed network of independent providers. It secures its operations through autonomous verifiable services and lets compute consumers scale resources up or down without long-term commitments. The network underlies other NodeOps offerings, including the flagship application workspace and node hosting services, by supplying the underlying compute and coordination layer.

CreateOS is a unified execution environment operated by NodeOps that lets builders move from idea to live application through a single workspace. It combines AI-assisted code generation, one-click deployment from source repositories, container images, or direct file upload, managed databases, monitoring, security scanning, custom domains, and a template marketplace. Developers and AI agents can also connect through a machine-readable interface to create projects, configure environments, and ship deployments without leaving their coding tools. The platform additionally supports monetizable API microservices that other agents can discover and call, with revenue shared back to publishers.

Vortex API and Widget is a business-facing integration layer that lets companies embed fiat-crypto on-ramp and off-ramp functionality directly inside their own applications. It provides a hosted checkout widget along with a programmatic exchange API and software development kit, handling quoting, KYC and KYB, compliance, and settlement so partner businesses can add ramp functionality without building their own infrastructure. The system connects to regulated local partners and stablecoin liquidity routes to convert between fiat currencies and cryptocurrencies, and supports both manual widget embedding and automated, backend-driven settlement triggered from custody wallets, multisigs, or smart contracts.