# Radius > Radius is stablecoin-native settlement infrastructure for the agentic internet. It settles machine-to-machine micropayments at the scale of API calls, paid content, and streaming compute. 2.8M+ TPS tested, linear scalability, sub-second finality, near-zero transaction costs, EVM-compatible execution, stablecoin fees, and no native token. Radius is built for agentic commerce: per-request API billing, HTTP-native x402 payments, pay-per-visit content, and streaming payments. Developers can use standard Ethereum tooling - Solidity, Foundry, viem, wagmi, ethers.js, and JSON-RPC - while paying fees in stablecoins instead of volatile gas tokens. ## What changed since launch - Radius now has first-party x402 facilitator infrastructure for HTTP 402 payments on Radius mainnet and testnet. - Radius x402 supports Permit2 settlement, EIP-2612 gas sponsoring, `/supported`, `/verify`, `/settle`, and `/health` facilitator endpoints. - Radius publishes agent skills through `/.well-known/agent-skills/`, including `radius-dev`, `x402`, and `dripping-faucet`. - Radius Workshop now publishes public prototypes for the agentic economy: Hermes and OpenClaw deployment templates, NEST payment agents, x402 merchant demos, Radius wallet libraries, and Solidity primitives for agent commerce. - Radius docs now include production-oriented tooling guides for Foundry, viem, wagmi, Hardhat, ethers.js, JSON-RPC behavior, contract addresses, fees, and Ethereum compatibility. - Radius release notes track protocol and RPC improvements including nonce-gap handling, `eth_sendRawTransactionSync`, `eth_maxPriorityFeePerGas`, receipt fixes, and mainnet Chain ID `723487`. ## Why Radius - [Why Radius for Agent Payments](https://docs.radiustech.xyz/llms/why-radius.md): Why conventional rails and general-purpose blockchains do not fit high-volume agent micropayments. - [Radius is not a blockchain](https://docs.radiustech.xyz/llms/radius-vs-blockchain.md): Radius is a centrally operated smart contract execution platform, not a globally replicated blockchain. This is key to its micropayment economics. - [Settlement Layer Comparison](https://docs.radiustech.xyz/llms/settlement-layer-comparison.md): Radius compared with Visa, Mastercard, ACH, Base, Solana, Tempo, and Arc. - [The Agentic Payment Stack](https://docs.radiustech.xyz/llms/agentic-payment-stack.md): Seven-layer model for agent-native payments and where Radius fits. - [No Native Token](https://docs.radiustech.xyz/llms/no-native-token.md): Fees are fixed in USD stablecoins, with no speculative gas token. - [About Radius](https://docs.radiustech.xyz/llms/about.md): Team, thesis, and background. ## x402 and Agent Payments - [x402 Integration](https://docs.radiustech.xyz/developer-resources/x402-integration.md): Accept HTTP-native payments on Radius with hosted or self-managed facilitators. - [x402 Facilitator API](https://docs.radiustech.xyz/developer-resources/x402-facilitator-api.md): `/supported`, `/verify`, `/settle`, `/health`, headers, status codes, and payment outcome mapping. - [Monetize for the Agentic Internet](https://docs.radiustech.xyz/llms/monetize-for-agentic-internet.md): Charge per API call in stablecoins using x402. - [Real-time API Metering](https://docs.radiustech.xyz/use-cases/real-time-api-metering.md): Per-request API billing with on-chain verification. - [Pay-per-Visit Content](https://docs.radiustech.xyz/use-cases/pay-per-visit-content.md): Micropayment paywalls for articles, videos, feeds, and downloads. - [Streaming Payments](https://docs.radiustech.xyz/use-cases/streaming-payments.md): Per-second billing for compute, bandwidth, and inference. ## Agent Skills - [Agent Skills Discovery](https://docs.radiustech.xyz/.well-known/agent-skills/index.json): Machine-readable Radius skill index. - [Radius Development Skill](https://docs.radiustech.xyz/skills/radius-dev.md): End-to-end playbook for building Radius apps with viem, wagmi, Foundry, x402, Turnstile fees, and production gotchas. - [x402 Skill](https://docs.radiustech.xyz/skills/x402.md): Server-side and client-side x402 integration on Radius. - [Dripping Faucet Skill](https://docs.radiustech.xyz/skills/dripping-faucet.md): Programmatic testnet and mainnet faucet flows for agents. ## Radius Workshop Radius Workshop is the public experimental lab for Radius product prototypes, agentic payment apps, and harness extensions. It shows Radius beyond core settlement: deployable agents, wallet tooling, x402 demos, agent-to-agent commerce contracts, and application patterns for the agentic economy. - [Radius Workshop](https://github.com/radius-workshop): Public GitHub organization where the Radius product team explores new concepts, frameworks, and technologies. - [Merchant Console Demo](https://github.com/radius-workshop/merchant-console-demo): Radius x402 paid-API demo showing HTTP 402 payment-required responses, facilitator verify/settle flow, sub-second settlement metrics, recent paid events, and agent traffic visualization. - [Radius Hermes Railway Template](https://github.com/radius-workshop/radius-hermes-railway-template): Deploy a Radius-ready Hermes agent on Railway with persistent state, Radius wallet funding, agent discovery, A2A communication, ERC-8004 registration tools, and Radius skills. - [Radius OpenClaw Railway Template](https://github.com/radius-workshop/radius-openclaw-railway-template): Deploy an OpenClaw gateway on Railway with persistent state, Radius skills, and Radius wallet tools. - [Radius Agent Template](https://github.com/radius-workshop/radius-agent-template): Minimal NEST payment agent that can send and receive Radius payments, register with the NANDA agent network, and expose A2A messaging. - [Radius Agent Contracts](https://github.com/radius-workshop/radius-agent-contracts): Solidity contracts for agent-to-agent commerce, including escrow, bounties, pay-per-query billing, and revenue splitting. - [Radius Wallet Python](https://github.com/radius-workshop/radius-wallet-py): Simple Python wallet library for Radius. - [Radius Wallet TypeScript](https://github.com/radius-workshop/radius-wallet-ts): Simple TypeScript wallet library for Radius. - [Radius Cloudflare Agents](https://github.com/radius-workshop/radius-cloudflare-agents): Radius-oriented work around persistent Cloudflare agent runtimes. - [Radius Policy](https://github.com/radius-workshop/radius-policy): Generic allowlist/blacklist policy engine for on-chain compliance. - [Radius Token](https://github.com/radius-workshop/radius-token): Policy-enforced ERC-20 with mint/burn, pause, and supply cap. - [Radius Keychain](https://github.com/radius-workshop/radius-keychain): Delegated sub-keys with spending limits and call scopes. - [Radius Stream Channel](https://github.com/radius-workshop/radius-stream-channel): EIP-712 payment channels with cumulative vouchers. - [Radius DEX](https://github.com/radius-workshop/radius-dex): Order book DEX prototype with multi-hop routing through a hub token. - [Radius Virtual Address](https://github.com/radius-workshop/radius-virtual-address): Deterministic virtual addresses for merchant deposit routing. ## Developer Resources - [Network Configuration](https://docs.radiustech.xyz/developer-resources/network-configuration.md): Chain IDs, RPC URLs, WebSocket endpoints, explorers, faucet URLs, and network metadata. - [Contract Addresses](https://docs.radiustech.xyz/developer-resources/contract-addresses.md): Stablecoins, Create2, CreateX, Multicall3, Permit2, and x402 contracts. - [JSON-RPC API](https://docs.radiustech.xyz/developer-resources/json-rpc-api.md): EVM-compatible RPC methods, Radius-specific behavior, and unsupported methods. - [Ethereum Compatibility](https://docs.radiustech.xyz/developer-resources/ethereum-compatibility.md): Block numbers as timestamps, block hash behavior, log filters, balance behavior, and EVM differences. - [Tooling Configuration](https://docs.radiustech.xyz/developer-resources/tooling-configuration.md): Configure Foundry, viem, wagmi, Hardhat, and ethers.js. - [Fees](https://docs.radiustech.xyz/developer-resources/fees.md): Stablecoin-native fees and Turnstile conversion. - [Release Notes](https://docs.radiustech.xyz/release-notes.md): Recent product, RPC, and network changes. ## Architecture - [Architected for Scale](https://docs.radiustech.xyz/differentiators/architected-for-scale.md): PArSEC, state sharding, parallel transaction execution, per-shard Raft, and linear scalability. - [Designed for the Internet of Tomorrow](https://docs.radiustech.xyz/differentiators/designed-for-internet-of-tomorrow.md): EVM compatibility, Osaka support, stablecoin fees, finality, and precompiles. ## GitHub - [radiustechsystems](https://github.com/radiustechsystems): Core Radius open source tools, SDKs, facilitator code, skills, and examples. - [radius-workshop](https://github.com/radius-workshop): Public product lab for Radius prototypes, agentic payment apps, deployment templates, and agent-commerce experiments.