Nodeflare-mcp provides blockchain JSON-RPC access across 23 EVM chains for AI agents, with no API key required for standard reads.
Available Tools
list_chains — List all 23 supported chains with chain IDs and endpoint URLs
get_block_number — Get the latest block number on any supported chain
get_balance — Get the native token balance (in wei) of any address
get_transaction — Get transaction details (from, to, value, input)
get_transaction_receipt — Get transaction receipt (status, logs, gas used)
get_block — Get block by number/tag with optional full transactions
eth_call — Execute read-only smart contract calls using ABI-encoded calldata
get_logs — Fetch contract event logs — requires API key or x402 wallet (~$0.001/call)
get_gas_price — Get current gas price plus EIP-1559 priority fee
get_token_balance — Get ERC-20 balance in raw and human-readable formats
get_token_metadata — Get ERC-20 name, symbol, decimals, and total supply
rpc_call — Make any arbitrary JSON-RPC call on any supported chain (heavy methods like trace_*, debug_* require API key or x402)
Access Tiers
Free (no key): Standard reads — block numbers, balances, transactions, eth_call
API Key (NODEFLARE_API_KEY): Heavy methods + 3,000,000 compute units/month free
x402 Wallet (X402_PRIVATE_KEY): Pay-per-call (~$0.001 in USDC on Base, Polygon, or Arbitrum) for heavy methods with no account needed
Supported Chains (23 total): Ethereum, Base, BNB Chain, Arbitrum, Optimism, Avalanche, HyperEVM, Polygon, Unichain, Sonic, Linea, Mantle, Zircuit, Robinhood Chain, XLayer, Soneium, Nova, BOB, Ink, Cronos, Mode, Sei, and Plasma
Provides blockchain JSON-RPC access to BNB Chain via NodeFlare, enabling AI agents to query block data, balances, transactions, and perform contract calls.
Provides blockchain JSON-RPC access to Ethereum via NodeFlare, enabling AI agents to query block data, balances, transactions, and perform contract calls.
Provides blockchain JSON-RPC access to Optimism via NodeFlare, enabling AI agents to query block data, balances, transactions, and perform contract calls.
Provides blockchain JSON-RPC access to Polygon via NodeFlare, enabling AI agents to query block data, balances, transactions, and perform contract calls.
Provides blockchain JSON-RPC access to Robinhood Chain via NodeFlare, enabling AI agents to query block data, balances, transactions, and perform contract calls.
Blockchain JSON-RPC for AI agents on 23 EVM chains — Ethereum, Base, BNB Chain, Arbitrum, Optimism, Avalanche, HyperEVM, Polygon, and young chains like Robinhood Chain, Plasma, Ink, Zircuit, BOB and Soneium. Served from NodeFlare's own bare-metal nodes across 5 regions.
{
"mcpServers": {
"nodeflare": {
"command": "npx",
"args": ["-y", "nodeflare-mcp"]
}
}
}That's it — no API key required for standard reads (block numbers, balances, transactions, eth_call).
Every tool's chain argument accepts a slug (eth, base, arb), a name (ethereum, arbitrum, bsc), or a numeric chain ID (1, 8453) — so agents don't have to know NodeFlare's internal slugs.
Related MCP server: dRPC Agent Skills
This repo doubles as a Claude Code plugin marketplace. Installing the plugin wires up the MCP server and a set of slash-command recipes in one step:
claude plugin marketplace add Nodeflare-app/nodeflare-mcp
claude plugin install nodeflareThen use the recipes below (/nodeflare:balance, /nodeflare:token, …). To unlock heavy methods, export NODEFLARE_API_KEY in your shell before starting Claude Code (free key, 2M CU/month).
Ready-made slash commands bundled with the plugin:
Recipe | What it does |
| List supported chains, IDs and endpoint URLs |
| Native + ERC-20 balances, one chain or across the majors |
| ERC-20 metadata (name/symbol/decimals/supply) + optional holder balance |
| Fetch a transaction + receipt and explain what it did |
| Fetch and summarise a contract's recent event logs |
| Current gas price on a chain, or a cheapest-first comparison |
The server picks its access tier from the environment:
Env var | Tier |
(none) | Free public endpoints — standard read methods, rate-limited per IP |
| Free/paid key — heavy methods, 2,000,000 compute units/month free (get one) |
| Pay per call with x402 — heavy methods ( |
With an x402 wallet, a blocked heavy method is retried automatically as a paid call — the tool result includes "_x402": "settled via x402" when a payment settled on-chain.
{
"mcpServers": {
"nodeflare": {
"command": "npx",
"args": ["-y", "nodeflare-mcp"],
"env": { "X402_PRIVATE_KEY": "0x…" }
}
}
}Use a dedicated agent wallet holding a small USDC balance — never your main wallet.
Tool | Description |
| The 23 supported chains with chain IDs and endpoints |
| Latest block number (decimal + hex) |
| Native-token balance — raw wei + human-readable amount in the chain's currency |
| Transaction receipt by hash |
| Read-only contract call |
| Contract event logs (heavy — key or x402 wallet) |
| Any JSON-RPC method on any supported chain |
| Transaction by hash (from, to, value, input) |
| Block by number/tag, optional full transactions |
| Current gas price + EIP-1559 priority fee |
| ERC-20 balance, raw + human-readable |
| ERC-20 name, symbol, decimals, total supply |
| ENS name → address (forward) or address → primary ENS name (reverse) |
| Current USD price of an ERC-20 (DefiLlama, keyless) — price, symbol, confidence |
| Gas price across chains in one call, cheapest first, so an agent picks where to transact |
| Native + ERC-20 balances for one address across many of the 23 chains in one call (incl. young chains); pay-per-call with an x402 wallet |
| ERC-20 approvals a wallet has granted across chains, with revoked ones dropped and unlimited approvals flagged (heavy — key or x402) |
| Full "know this wallet" report: balances + USD total + top holdings + active approvals, across chains (approvals half is heavy) |
| Risk-check an ERC-20 before trading: ownership, proxy detection, holder concentration, honeypot simulation → risk score (deep checks heavy) |
| Tx pre-flight: will it revert, gas used, and which tokens/ETH move (asset-change tracing is heavy) |
| Onchain Answer Engine — plain-English question about a wallet/token → a cited verdict in one call (key or x402; no free tier) |
Address arguments (get_balance, get_token_balance, eth_call) also accept ENS names — pass vitalik.eth and it's resolved to an address automatically.
get_multichain_balances can also auto-discover the tokens an address holds (discover: true, x402 wallet required). Discovered tokens are USD-priced via DefiLlama and, on price-covered chains, filtered by value: pass minUsd (default 0.01) to set the worthless-token cutoff, includeSpam: true to keep unpriced tokens, or includeDust: true to keep sub-1e-9 balances.
The server also exposes the recipes as MCP prompts, so guided workflows show up in any MCP client (Cursor, Windsurf, …), not just the Claude Code plugin: chains, balance, token, tx, logs, gas.
NodeFlare — free API key, 2M CU/month
x402 pay-per-request — pricing and how it works
MIT
Unclaimed servers have limited discoverability.
If you are the server author, to access and configure the admin panel.
30 pay-per-call APIs for AI agents: compliance, trade, safety, web, data. USDC on Base via x402.
Pay-per-call x402 gateway: agent tools, OpenAI-compatible LLM, market data, RPC, security audits.
Read-only on-chain intel for AI agents on Base: balances, tokens, gas, tx status. No API keys.
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curl -X GET 'https://glama.ai/api/mcp/v1/servers/Nodeflare-app/nodeflare-mcp'
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