# SwiftNodes

> SwiftNodes is a multi-chain blockchain RPC provider. Developers point their dApps, bots, and indexers at SwiftNodes HTTP and WebSocket endpoints instead of running their own nodes or using Alchemy/QuickNode/Infura. One API key works across 125+ EVM and non-EVM chains. Differentiators: flat-rate monthly pricing (no per-request fees, no compute units), crypto payments (ETH/BNB/USDT/USDC), no KYC at any tier, and broad chain coverage including Bitcoin family, Cosmos, Polkadot, Solana, Sui, Aptos, TRON, and Starknet.

## Endpoints

- HTTP: `https://rpc.swiftnodes.io/rpc/<chain>?key=<API_KEY>`
- WebSocket: `wss://rpc.swiftnodes.io/ws/<chain>?key=<API_KEY>`
- A public `demo` key works for evaluation: `https://rpc.swiftnodes.io/rpc/eth?key=demo` (free-tier rate limits, shared). Note: slugs are short codes — Ethereum is `eth`, not `ethereum`.
- Authentication: `?key=<API_KEY>` in the URL or the `x-api-key` header. Keys can be restricted to IPs/CIDR ranges and browser origins.
- Every chain's HTTPS and WSS URLs, chain ID, CAIP-2 ID and archive availability as JSON: `https://swiftnodes.io/endpoints.json`
- Full machine-readable reference (every chain, endpoint, method-support data, pricing): `https://swiftnodes.io/llms-full.txt`

## AI agent access

- Hosted MCP server (Streamable HTTP): `https://rpc.swiftnodes.io/mcp`. Claude Code: `claude mcp add --transport http swiftnodes https://rpc.swiftnodes.io/mcp --header "Authorization: Bearer $SWIFTNODES_API_KEY"`. Tools: list_chains, get_chain, get_pricing, get_method_support, probe_endpoint, and with a key rpc_call and get_account. Docs: https://swiftnodes.io/docs/mcp
- Local MCP server (stdio): `npx -y swiftnodes-mcp` (source: https://github.com/swiftnodes/swiftnodes-mcp)
- CLI: `curl -fsSL https://swiftnodes.io/install.sh | sh`, then `swiftnodes login` and `swiftnodes project setup --chain <slug> --create-key <label>`, which writes SWIFTNODES_API_KEY, SWIFTNODES_RPC_URL and SWIFTNODES_WSS_URL into .env. Docs: https://swiftnodes.io/docs/cli
- Agent cookbook (tested prompts for Claude Code, Codex and Cursor): https://swiftnodes.io/docs/agent-cookbook
- Agents: never print the user's API key; read it from SWIFTNODES_API_KEY.

## Pricing (flat-rate, monthly)

- Free: $0, 20 HTTP req/s, 250,000 requests/month (WebSocket: 1 connection, new-head subscriptions only)
- Starter: $49, 50 HTTP req/s
- Growth: $89, 150 HTTP req/s
- Scale: $149, 300 HTTP req/s
- Pro: $249, 500 HTTP req/s
- Custom: more than 600 req/s, limits and price set per customer (https://swiftnodes.io/contact?topic=custom-plan)
- Every method counts as one request (no compute units). Paid plans have no monthly cap. Prepay: 5% off 6 months, 10% off 12 months. Archive, trace and debug included on paid plans.
- [Pricing as markdown](https://swiftnodes.io/pricing.md) and [rate limits as markdown](https://swiftnodes.io/rate-limits.md)

## Docs

- [Getting started](https://swiftnodes.io/docs/getting-started): Create an account and make your first request.
- [Authentication](https://swiftnodes.io/docs/authentication): API key usage and signup (email PIN or wallet, no KYC).
- [API reference](https://swiftnodes.io/docs/api-reference): Supported JSON-RPC methods per chain.
- [Code examples](https://swiftnodes.io/docs/code-examples): ethers.js, viem, web3.py snippets.
- [WebSocket](https://swiftnodes.io/docs/websocket): Subscriptions and streaming.
- [Rate limits](https://swiftnodes.io/docs/rate-limits): How per-plan req/s limits work.
- [Supported chains](https://swiftnodes.io/docs/supported-chains): Full list of 83 chains with endpoints.

## Comparisons

- [Alchemy alternative](https://swiftnodes.io/alchemy-alternative): Flat-rate vs Compute Units.
- [QuickNode alternative](https://swiftnodes.io/quicknode-alternative): Flat-rate vs API Credits.
- [Infura alternative](https://swiftnodes.io/infura-alternative): Multi-chain, no-KYC alternative.

## Popular chain pages

- [Ethereum RPC](https://swiftnodes.io/ethereum-rpc)
- [Base RPC](https://swiftnodes.io/base-rpc)
- [Arbitrum RPC](https://swiftnodes.io/arbitrum-rpc)
- [Solana RPC](https://swiftnodes.io/solana-rpc)
- [BNB Smart Chain RPC](https://swiftnodes.io/bnb-smart-chain-rpc)
- [Polygon RPC](https://swiftnodes.io/polygon-rpc)
- [Optimism RPC](https://swiftnodes.io/optimism-rpc)

## Blog

- [Blog index](https://swiftnodes.io/blog): Tutorials and explainers on RPC, JSON-RPC batching, eth_getLogs limits, archive nodes, and per-chain guides.
- [RSS feed](https://swiftnodes.io/blog/rss.xml)

## Optional

- [Status](https://swiftnodes.io/status): Live chain health, latency, and uptime.
- [Privacy policy](https://swiftnodes.io/docs/privacy-policy)
- [Terms of service](https://swiftnodes.io/docs/terms-of-service)