paulrberg/evm-chains
skills/evm-chains/SKILL.md
This skill should be used when the user asks to resolve an EVM chain name or chain ID; find chain metadata such as a default public RPC, native currency symbol, or block explorer URL; determine whether a chain is supported by RouteMesh; or read on-chain account data for any EVM chain — "check ETH balance", "query ERC-20 balance", "get wallet balance", "check token holdings", "fetch NFT transfers", "ERC-721 or ERC-1155 transfer history", "transaction history", "find first funding transaction", "trace fund origin", "who funded this address", "query Etherscan", "query Blockscout", or "look up a chain on Chainscout". It routes each data query through Etherscan API V2 (preferred) or the Blockscout/Chainscout APIs (fallback for chains Etherscan doesn't serve), with direct JSON-RPC as a last resort. Also use it for chain resolution before fetching data from or interacting with an EVM chain.
$ install --global
skillsauthnpx skillsauth add paulrberg/dot-agents evm-chainsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Jun 4, 2026, 7:58 AM91.8s9 files scanned
SKILL.md
- argument-hint:
- <chain-name-or-id>
- disable-model-invocation:
- false
- name:
- evm-chains
- user-invocable:
- true
- description:
- This skill should be used when the user asks to resolve an EVM chain name or chain ID; find chain metadata such as a default public RPC, native currency symbol, or block explorer URL; determine whether a chain is supported by RouteMesh; or read on-chain account data for any EVM chain — "check ETH balance", "query ERC-20 balance", "get wallet balance", "check token holdings", "fetch NFT transfers", "ERC-721 or ERC-1155 transfer history", "transaction history", "find first funding transaction", "trace fund origin", "who funded this address", "query Etherscan", "query Blockscout", or "look up a chain on Chainscout". It routes each data query through Etherscan API V2 (preferred) or the Blockscout/Chainscout APIs (fallback for chains Etherscan doesn't serve), with direct JSON-RPC as a last resort. Also use it for chain resolution before fetching data from or interacting with an EVM chain.
EVM Chains
Local EVM chain dataset (chain name, chain ID, public RPCs, native currency symbol, default block explorer URL, RouteMesh support) and a router for reading on-chain data: resolve the chain, then dispatch balance, token, transfer, transaction, and first-funding queries to Etherscan (preferred) or Blockscout (fallback).
Use this skill to resolve chain metadata before reading from an RPC, sending transactions, calling contracts, constructing chain-specific RPC URLs, or building explorer links to addresses, transactions, or blocks — and to query on-chain account data once the chain is resolved (see Querying On-Chain Data (Routing)).
Match chains by displayed name or numeric chain ID. Treat any chain missing from the tables as outside this skill's local dataset. If the requested chain is not listed, use the web search tool to find authoritative metadata from the chain's official documentation or Chainlist before proceeding.
Querying On-Chain Data (Routing)
To read account data — native balance, token holdings, ERC-20/721/1155 transfers, transaction history, or first-funding — resolve the chain, then dispatch to the right explorer API. Do not default to Ethereum; infer the chain from the prompt (explicit chain mention, chain-specific tokens like POL→137 / ARB→42161, testnet keywords). If ambiguous, ask.
- Resolve the chain — map the name → chain ID via the tables below (Mainnets, Testnets).
- Etherscan (preferred) — if the chain ID is listed in
./references/etherscan-chains.md, follow./references/etherscan-api.md(unified API V2, needs$ETHERSCAN_API_KEY). - Blockscout (fallback) — otherwise follow
./references/blockscout-api.md. Blockscout/Chainscout indexes 1000+ chains Etherscan doesn't serve, with full token holdings on the free tier. - Neither — if the chain is in neither registry, query the public RPCs below directly over JSON-RPC (
castfrom thecli-castskill, orcurl). If the chain is non-EVM (Solana, Bitcoin, Cosmos, …), report that it is unsupported.
Paid-chain auto-fallback. Base (8453), OP (10), Avalanche (43114), and BNB (56) — plus their testnets 84532, 11155420, 43113, 97 — are Etherscan-listed, but their data endpoints require a paid Etherscan plan. If the target is one of these and ./scripts/etherscan-detect-plan.sh reports paid_chains=false (free tier), route to Blockscout instead: it serves them free, no key, with full holdings. Etherscan stays the default for every other chain.
RouteMesh
Use RouteMesh only when the RouteMesh column is Yes and the ROUTEMESH_API_KEY environment variable is available.
To verify current RouteMesh support, call GET https://lb.routeme.sh/chains; use https://lb2.routeme.sh/chains as the backup endpoint. Do not use https://rpc.routeme.sh/chains; the hostname may not resolve even though it appears in RouteMesh's OpenAPI spec.
Construct the RouteMesh RPC URL as:
https://lb.routeme.sh/rpc/CHAIN_ID/ROUTEMESH_API_KEY
Replace CHAIN_ID with the numeric chain ID and ROUTEMESH_API_KEY with the value of the ROUTEMESH_API_KEY environment variable. If RouteMesh is No or ROUTEMESH_API_KEY is not available, use the chain's primary public RPC first, then the listed fallback RPCs in order.
Public RPCs
Public RPCs are best-effort. Before relying on one for data fetches or contract calls, verify it with eth_chainId. If the primary endpoint fails, try the fallback endpoints for that chain from the fallback table.
Do not use RPCs for Form, Meld, or Tangle. They are intentionally omitted from the active mainnet table because those chains are now defunct and no longer operating. If the user asks about Form, Meld, or Tangle, say that the chain is defunct/no longer operating instead of returning an RPC URL.
Explorer URLs
The Explorer URL column is the base URL of the chain's canonical block explorer. Append standard path segments to build links:
| Resource | Path | Example |
| ----------- | ----------------- | ---------------------------------------- |
| Address | /address/<addr> | https://arbiscan.io/address/0xabc... |
| Transaction | /tx/<hash> | https://etherscan.io/tx/0x123... |
| Block | /block/<number> | https://basescan.org/block/12345678 |
| Token | /token/<addr> | https://polygonscan.com/token/0xdef... |
Etherscan and Etherscan-stack explorers (Arbiscan, Basescan, BscScan, Polygonscan, Optimism Etherscan, Lineascan, Snowscan, Blastscan, Berascan, Uniscan, Gnosisscan, abscan.org) all follow this scheme. Most Blockscout-based and chain-native explorers accept the same segments, but conventions can drift — verify against the explorer UI when in doubt.
Explorer URL presence, Etherscan-style paths, or an Etherscan-stack explorer name do not imply Etherscan API V2 support. When API coverage matters, use ./references/etherscan-chains.md or Etherscan's live https://api.etherscan.io/v2/chainlist endpoint. Treat this table as chain metadata for RPC and explorer-link construction only.
Caveats
Ronin (app.roninchain.com) does not follow the Etherscan path scheme. Verify against the explorer UI before constructing a Ronin link.
PulseChain's explorer (scan.pulsechain.com) is a Blockscout frontend; its JSON API is on a separate host. Address, tx, and block links under scan.pulsechain.com resolve, but scan.pulsechain.com/api/... returns a frontend 404, and the Blockscout API backend at api.scan.pulsechain.com has been observed down (HTTP 502). Prefer PulseChain's listed RPC endpoints for programmatic data.
Mainnets
| Chain name | Chain ID | Primary public RPC | Native currency symbol | Explorer URL | RouteMesh | | ------------- | -------- | ----------------------------------------------- | ---------------------- | ------------------------------- | --------- | | Abstract | 2741 | https://api.mainnet.abs.xyz | ETH | https://abscan.org | Yes | | Arbitrum | 42161 | https://arb1.arbitrum.io/rpc | ETH | https://arbiscan.io | Yes | | Avalanche | 43114 | https://api.avax.network/ext/bc/C/rpc | AVAX | https://snowscan.xyz | Yes | | Base | 8453 | https://mainnet.base.org | ETH | https://basescan.org | Yes | | Berachain | 80094 | https://rpc.berachain.com | BERA | https://berascan.com | Yes | | Blast | 81457 | https://rpc.blast.io | ETH | https://blastscan.io | Yes | | BNB Chain | 56 | https://bsc-dataseed1.bnbchain.org | BNB | https://bscscan.com | Yes | | Celo | 42220 | https://forno.celo.org | CELO | https://celoscan.io | Yes | | Chiliz | 88888 | https://rpc.chiliz.com | CHZ | https://chiliscan.com | Yes | | Core Dao | 1116 | https://rpc.coredao.org | CORE | https://scan.coredao.org | Yes | | Dymension | 1100 | https://dymension.api.onfinality.io/public | DYM | https://dym.fyi | Yes | | Ethereum | 1 | https://ethereum-rpc.publicnode.com | ETH | https://etherscan.io | Yes | | Fantom | 250 | https://rpc.fantom.network | FTM | https://ftmscan.com | Yes | | Gnosis | 100 | https://rpc.gnosischain.com | XDAI | https://gnosisscan.io | Yes | | HyperEVM | 999 | https://rpc.hyperliquid.xyz/evm | HYPE | https://hyperevmscan.io | Yes | | IoTeX | 4689 | https://babel-api.mainnet.iotex.io | IOTX | https://iotexscan.io | Yes | | Lightlink | 1890 | https://replicator.phoenix.lightlink.io/rpc/v1 | ETH | https://phoenix.lightlink.io | Yes | | Linea Mainnet | 59144 | https://rpc.linea.build | ETH | https://lineascan.build | Yes | | Mode | 34443 | https://mainnet.mode.network | ETH | https://modescan.io | Yes | | Monad | 143 | https://rpc.monad.xyz | MON | https://monadscan.com | Yes | | Morph | 2818 | https://rpc.morphl2.io | ETH | https://explorer.morphl2.io | Yes | | OP Mainnet | 10 | https://mainnet.optimism.io | ETH | https://optimistic.etherscan.io | Yes | | Plasma | 9745 | https://rpc.plasma.to | XPL | https://plasmascan.to | Yes | | Polygon | 137 | https://polygon-bor-rpc.publicnode.com | POL | https://polygonscan.com | Yes | | PulseChain | 369 | https://rpc.pulsechain.com | PLS | https://scan.pulsechain.com | Yes | | Ronin | 2020 | https://api.roninchain.com/rpc | RON | https://app.roninchain.com | Yes | | Sei Network | 1329 | https://evm-rpc.sei-apis.com | SEI | https://seiscan.io | Yes | | Sonic | 146 | https://rpc.soniclabs.com | S | https://sonicscan.org | Yes | | Sophon | 50104 | https://rpc.sophon.xyz | SOPH | https://sophscan.xyz | Yes | | Superseed | 5330 | https://mainnet.superseed.xyz | ETH | https://explorer.superseed.xyz | Yes | | Unichain | 130 | https://mainnet.unichain.org | ETH | https://uniscan.xyz | Yes | | World Chain | 480 | https://worldchain-mainnet.g.alchemy.com/public | ETH | https://worldscan.org | Yes | | XDC | 50 | https://rpc.xdcrpc.com | XDC | https://xdcscan.com | Yes | | Zora | 7777777 | https://zora.drpc.org | ETH | https://explorer.zora.energy | No |
Mainnet Fallback RPCs
| Chain name | Chain ID | Fallback public RPCs | | ------------- | -------- | -------------------------------------------------------------------------------------------------------------- | | Abstract | 2741 | https://abstract.drpc.org, https://2741.rpc.thirdweb.com | | Arbitrum | 42161 | https://arbitrum-one-rpc.publicnode.com, https://42161.rpc.thirdweb.com, https://rpcfree.com/arbitrum-rpc | | Avalanche | 43114 | https://avalanche-c-chain-rpc.publicnode.com, https://43114.rpc.thirdweb.com | | Base | 8453 | https://base-rpc.publicnode.com, https://base.gateway.tenderly.co, https://developer-access-mainnet.base.org | | Berachain | 80094 | https://berachain-rpc.publicnode.com, https://80094.rpc.thirdweb.com, https://rpc.berachain-apis.com | | Blast | 81457 | https://blast-rpc.publicnode.com, https://blast.drpc.org, https://81457.rpc.thirdweb.com | | BNB Chain | 56 | https://bsc-rpc.publicnode.com, https://bsc.drpc.org, https://56.rpc.thirdweb.com | | Celo | 42220 | https://celo.drpc.org, https://celo-rpc.publicnode.com, https://42220.rpc.thirdweb.com | | Chiliz | 88888 | https://chiliz.publicnode.com, https://88888.rpc.thirdweb.com, https://rpc.ankr.com/chiliz | | Core Dao | 1116 | https://core.drpc.org, https://1116.rpc.thirdweb.com, https://rpc-core.icecreamswap.com | | Dymension | 1100 | https://dymension.drpc.org, https://1100.rpc.thirdweb.com, https://dymension-evm.blockpi.network/v1/rpc/public | | Ethereum | 1 | https://eth.drpc.org, https://rpc.flashbots.net, https://1.rpc.thirdweb.com | | Fantom | 250 | https://rpc2.fantom.network | | Gnosis | 100 | https://gnosis-rpc.publicnode.com, https://gnosis.drpc.org, https://100.rpc.thirdweb.com | | HyperEVM | 999 | https://hyperliquid.drpc.org, https://999.rpc.thirdweb.com, https://gwan-ssl.wandevs.org:46891 | | IoTeX | 4689 | https://4689.rpc.thirdweb.com | | Lightlink | 1890 | https://1890.rpc.thirdweb.com | | Linea Mainnet | 59144 | https://linea-rpc.publicnode.com, https://59144.rpc.thirdweb.com | | Mode | 34443 | https://mode.drpc.org, https://34443.rpc.thirdweb.com | | Monad | 143 | https://monad.drpc.org, https://143.rpc.thirdweb.com | | Morph | 2818 | https://morph.drpc.org, https://2818.rpc.thirdweb.com, https://rpc-quicknode.morphl2.io | | OP Mainnet | 10 | https://optimism-rpc.publicnode.com, https://optimism.drpc.org, https://10.rpc.thirdweb.com | | Plasma | 9745 | https://9745.rpc.thirdweb.com, https://plasma.drpc.org, https://plasma.gateway.tenderly.co | | Polygon | 137 | https://polygon.drpc.org, https://137.rpc.thirdweb.com, https://rpc-mainnet.matic.quiknode.pro | | PulseChain | 369 | https://pulsechain-rpc.publicnode.com, https://rpc-pulsechain.g4mm4.io, https://369.rpc.thirdweb.com | | Ronin | 2020 | https://ronin.drpc.org, https://2020.rpc.thirdweb.com | | Sei Network | 1329 | https://sei.drpc.org, https://1329.rpc.thirdweb.com | | Sonic | 146 | https://sonic-rpc.publicnode.com, https://sonic.drpc.org, https://146.rpc.thirdweb.com | | Sophon | 50104 | https://50104.rpc.thirdweb.com | | Superseed | 5330 | https://superseed.drpc.org, https://5330.rpc.thirdweb.com | | Unichain | 130 | https://unichain-rpc.publicnode.com, https://130.rpc.thirdweb.com | | World Chain | 480 | https://worldchain.drpc.org, https://480.rpc.thirdweb.com | | XDC | 50 | https://50.rpc.thirdweb.com, https://erpc.xdcrpc.com, https://rpc.xdc.org | | Zora | 7777777 | https://7777777.rpc.thirdweb.com, https://rpc.zora.energy |
Testnets
| Chain name | Chain ID | Primary public RPC | Native currency symbol | Explorer URL | RouteMesh | | ---------------- | -------- | ------------------------------------------- | ---------------------- | ---------------------------- | --------- | | Ethereum Sepolia | 11155111 | https://ethereum-sepolia-rpc.publicnode.com | ETH | https://sepolia.etherscan.io | Yes |
Testnet Fallback RPCs
| Chain name | Chain ID | Fallback public RPCs | | ---------------- | -------- | ----------------------------------------------------------------------------------------------- | | Ethereum Sepolia | 11155111 | https://11155111.rpc.thirdweb.com, https://sepolia.drpc.org, https://rpc.sepolia.ethpandaops.io |
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