MoltNode by Chord

MoltNode by Chord: MCP server

Read 31 blockchains and swap tokens from any AI agent. One hosted MCP server, no API key, no signup.

• Read: JSON-RPC on Ethereum, Base, Arbitrum, Solana, Monad, BNB Chain, Avalanche, Sui and 23 more, through MoltNode (automatic failover across providers).
• Trade: best-route swap quotes from Chord on Ethereum, Base, Monad, BNB Chain, Avalanche, Arbitrum, Robinhood Chain and Arc, with the unsigned transaction, the approval it needs and a simulation run from your wallet. Your agent signs with its own key; nothing is ever held for you.

https://moltnode.ag/mcp

Connect

Claude Code

claude mcp add --transport http moltnode https://moltnode.ag/mcp

Or install everything as a plugin (MoltNode + Chord MCP servers and the three skills):

/plugin install moltnode --marketplace tuantqse90/moltnode-mcp

Cursor, Windsurf, VS Code, Claude Desktop and any client that takes a URL

{
  "mcpServers": {
    "moltnode": { "type": "http", "url": "https://moltnode.ag/mcp" }
  }
}

In Claude Desktop or claude.ai you can also add it under Settings → Connectors → Add custom connector, with the URL above.

Clients that only start local commands (stdio)

{
  "mcpServers": {
    "moltnode": { "command": "npx", "args": ["-y", "moltnode-mcp"] }
  }
}

(npx -y github:tuantqse90/moltnode-mcp works too.)

The stdio bridge in this repo (index.mjs) forwards every call to the hosted server, so both give the same tools. Without network it still lists the tools (from tools.json, a snapshot of the hosted list refreshed with npm run refresh-tools) and each call says the server is unreachable.

Tools

Tool	What it does
list_chains	Every chain MoltNode serves (slug, chainId, native coin, endpoint) and the ones Chord trades on
rpc_call	Any JSON-RPC method on any chain: eth_call, eth_getLogs, Solana getBalance, Sui methods, …
get_block_number	Latest block of an EVM chain
get_balance	Native-coin balance of an address on an EVM chain
chord_find_token	Token address, decimals and verified flag by symbol or name
chord_swap_quote	Best route across the chain's DEXs + unsigned tx + approval (as a ready transaction) + simulation from the taker wallet
send_raw_transaction	Broadcast a signed transaction

How an agent swaps

1. chord_find_token → the addresses and decimals of the two tokens (the zero address is the native coin).
2. chord_swap_quote with taker = the agent's wallet. Amounts are integer strings in the token's smallest unit (10000000 = 10 USDC).
3. If the answer has approval, sign and send approval.tx first.
4. Sign tx with the agent's own key.
5. send_raw_transaction on the same chain.

The router enforces minAmountOut on-chain. Chord's own router answers first; another aggregator is used only when Chord has no route, and the answer says which.

Agent skills

Install with the skills CLI (Claude Code, Codex, Cursor, Gemini CLI and more): npx skills add tuantqse90/moltnode-mcp, or in Hermes: hermes skills tap add tuantqse90/moltnode-mcp. Gemini CLI extension: gemini extensions install https://github.com/tuantqse90/moltnode-mcp.

• skills/moltnode/: read 31 chains and swap through Chord end to end, with the safety rules (never handle a private key, confirm the quote before signing).
• skills/chord-swap/: safe best-route token swaps through Chord on Ethereum, Base, Arbitrum, BNB Chain, Avalanche, Monad, Robinhood Chain, Arc and Solana: finds the right token, checks it for honeypots and taxes, quotes, waits for the user's yes, then returns an unsigned transaction with a simulation for the user's own wallet. Plain HTTP, no key, no scripts.
• skills/chord-charts/: candlestick chart (SVG) with volume for any token on Ethereum, Base, Monad, BNB Chain, Avalanche, Arbitrum, Robinhood Chain, Arc or Solana, from Chord's trade data (python3 scripts/chart.py --chain base --token AERO --tf 1h).
• skills/chord/: Chord's trading and market-data skill (quotes, unsigned swaps, token boards, candles, wallet PnL, smart money, holders, LP pools), marketplace edition: no key handling, no environment variables, no installer (generated from Chord's skill at nullterminal 5f07c02e; the Ask command, which needs a key, is left out). The original with Ask: https://getchord.xyz/docs/skills/chord/

skills/moltnode/SKILL.md is a SKILL.md skill (Claude Code, Codex CLI, Cursor, Gemini CLI, OpenClaw and others): when to read a chain, how to run a swap end to end, and the safety rules (never handle a private key, confirm the quote before signing). Install it by copying the folder into your agent's skills directory, e.g. ~/.claude/skills/moltnode/.

Without MCP

• Function-calling definitions (Anthropic and OpenAI shapes), with the HTTP call behind each tool: https://moltnode.ag/tool-schema.json
• Plain JSON-RPC: POST https://moltnode.ag/<chain> (e.g. https://moltnode.ag/base)
• Chain catalog: https://moltnode.ag/api/chains · OpenAPI: https://moltnode.ag/openapi.json · Brief for LLMs: https://moltnode.ag/llms.txt
• Live swap quote in the browser and full viem / web3.py code: https://moltnode.ag/trade

Chains

Read: Monad, Ethereum, Base, Arbitrum One, Optimism, Polygon, BNB Chain, Solana, Avalanche C-Chain, HyperEVM, Berachain, Abstract, Sei, Sonic, Mantle, Taiko, zkSync Era, ZetaChain, opBNB, BOB, Edge, Stable, Katana, Morph, Swellchain, 0G, TAC, X Layer, Gnosis, Fantom, Sui.

Trade (Chord): Ethereum, Base, Monad, BNB Chain, Avalanche, Arbitrum, Robinhood Chain, Arc.

Limits

Free and shared: short bursts of 60 requests, then 3 requests per second and 20,000 per day per client; answers up to 8 MB. Past a limit the tools answer with the wait time. Send a User-Agent. For heavy production traffic, run your own node.

Links

• MoltNode: https://moltnode.ag · for agents: https://moltnode.ag/agents
• Chord: https://getchord.xyz · docs: https://getchord.xyz/docs/ · Chord's own MCP (17 more tools: boards, candles, wallet PnL, smart money, LP pools): https://api.getchord.xyz/v1/mcp

License

MIT