Agent skill

Rpc

by BlockRunAI in BlockRunAI/blockrun-mcp

A skill your agent uses when the user needs raw blockchain JSON-RPC access — contract reads (ethcall), native balances, blocks, transactions, logs, gas estimates, or any chain-native RPC method…

MITAuto-check passedBackend & APIs

Install Rpc

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill rpc -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp rpc --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/rpc .claude/skills/rpc && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "rpc" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/rpc into .claude/skills/rpc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rpc", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/rpc

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill rpc -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp rpc --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/rpc .agents/skills/rpc && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "rpc" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/rpc into .agents/skills/rpc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rpc", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill rpc -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp rpc --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/rpc .cursor/skills/rpc && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "rpc" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/rpc into .cursor/skills/rpc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rpc", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/BlockRunAI/blockrun-mcp.git --path skills/rpc

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill rpc -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp rpc --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/rpc .gemini/skills/rpc && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "rpc" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/rpc into .gemini/skills/rpc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rpc", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp rpc

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill rpc -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/rpc .github/skills/rpc && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "rpc" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/rpc into .github/skills/rpc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rpc", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill rpc -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp rpc --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/rpc .opencode/skills/rpc && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "rpc" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/rpc into .opencode/skills/rpc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rpc", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: rpc
GitHub stars: 392
Token cost: ~1.2k tokens
SKILL.md length: 390 words
Files: 1
Skills in repo: 17
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

A skill your agent uses when the user needs raw blockchain JSON-RPC access — contract reads (ethcall), native balances, blocks, transactions, logs, gas estimates, or any chain-native RPC method…

The user needs raw blockchain JSON-RPC access — contract reads (ethcall)
SKILL.md covers When to use which tool, Networks, Recipes and Failure semantics
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Native balances

What it does

Rpc is an agent skill from BlockRunAI/blockrun-mcp. Use when the user needs raw blockchain JSON-RPC access — contract reads (ethcall), native balances, blocks, transactions, logs, gas estimates, or any chain-native RPC method across 40 chains. One endpoint per chain via BlockRun's Tatum-backed gateway, $0.0030 per call, no node, no API key. Prefer blockrunprice / blockrundex / the paid tools when they already cover the question.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs. It works with Ethereum, Arbitrum and Solana. The repository describes itself as: Live data for AI agents — search, research, markets, crypto, X/Twitter. Pay-per-call via x402 micropayments. The licence is MIT.

When your agent uses it

The user needs raw blockchain JSON-RPC access — contract reads (ethcall)
Native balances
Any chain-native RPC method across 40 chains

Example prompts

“/rpc”

What it can do on your machine

Read from SKILL.md and the folder at commit a7a9b3c. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Rpc loads about 1.2k tokens when it runs. Until then it costs about 97 tokens; SKILL.md has 390 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~97
When it runs · the whole SKILL.md, loaded when a task matches: ~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from BlockRunAI/blockrun-mcp at commit a7a9b3c, republished under its MIT licence (© BlockRunAI). 390 words, ~1,161 tokens.

Download SKILL.mdSave it as .claude/skills/rpc/SKILL.md (or your agent's skills folder).

name: rpc
description: Use when the user needs raw blockchain JSON-RPC access — contract reads (eth_call), native balances, blocks, transactions, logs, gas estimates, or any chain-native RPC method across 40 chains. One endpoint per chain via BlockRun's Tatum-backed gateway, $0.0030 per call, no node, no API key. Prefer blockrun_price / blockrun_dex / the paid tools when they already cover the question.
triggers: rpc, json-rpc, eth_call, contract read, raw chain, node access, blockchain rpc, getBalance, block number, transaction receipt, event logs, tatum

Multi-chain RPC — every supported chain, one tool

blockrun_rpc POSTs a standard JSON-RPC 2.0 body to /v1/rpc/{network}. Flat $0.0030 per call ($0.002 base + the $0.001 transaction fee). A JSON-RPC batch array charges per element but pays the flat fee only once — $0.002 × n + $0.001, so a batch of 3 costs $0.0070 where three separate calls cost $0.0090. Batch whenever you can. Settlement in USDC via x402. Responses are cached briefly server-side for identical read calls (X-Cache: HIT is free of upstream latency but still billed).

When to use which tool

Question	Tool
"What's ETH trading at?"	`blockrun_price` (free)
"PEPE/WETH pool liquidity?"	`blockrun_dex` (free)
"What's this wallet holding?"	`blockrun_rpc` (labels: no tool since Surf was retired 2026-09-06)
"Call `balanceOf(0x...)` on this ERC-20"	`blockrun_rpc`
"Latest block / tx receipt / event logs / gas price"	`blockrun_rpc`
"Solana account info / slot / signatures"	`blockrun_rpc`

Networks

EVM (use eth_* methods):

Key	Chain	Key	Chain
`ethereum`	Ethereum	`zksync`	zkSync Era
`base`	Base	`berachain`	Berachain
`arbitrum`	Arbitrum One	`unichain`	Unichain
`arbitrum-nova`	Arbitrum Nova	`monad`	Monad
`optimism`	Optimism	`chiliz`	Chiliz
`polygon`	Polygon	`moonbeam`	Moonbeam
`bsc`	BNB Smart Chain	`aurora`	Aurora
`avalanche`	Avalanche C-Chain	`flare`	Flare
`fantom`	Fantom	`oasis`	Oasis Sapphire
`cronos`	Cronos	`kaia`	Kaia (Klaytn)
`celo`	Celo	`sonic`	Sonic
`gnosis`	Gnosis	`xdc`	XDC Network
`abstract`	Abstract	`hyperevm`	HyperEVM
`plume`	Plume	`ronin`	Ronin
`rootstock`	Rootstock (RSK)

Non-EVM (chain-native methods):

Key	Chain	Method family
`solana`	Solana	`getSlot`, `getBalance`, `getAccountInfo`, `getSignaturesForAddress`
`bitcoin`	Bitcoin	`getblockchaininfo`, `getblockcount`, `getrawtransaction`
`litecoin` / `dogecoin` / `bitcoin-cash` / `zcash`	UTXO chains	Bitcoin-style RPC
`near`	NEAR	`status`, `query`
`sui`	Sui	`sui_getLatestCheckpointSequenceNumber`, `suix_getBalance`
`ripple`	XRP Ledger	`account_info`, `ledger`
`polkadot` / `kusama`	Substrate	`chain_getHeader`, `state_getStorage`

Unknown-but-wellformed slugs pass through to the Tatum gateway untouched — newly added chains work without an MCP update. A bad slug returns HTTP 400 with the supported list (no charge).

Show full SKILL.md (104 more words)Show less

Recipes

ERC-20 balance (eth_call):

blockrun_rpc({
  network: "base",
  method: "eth_call",
  params: [{
    to: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",   // USDC on Base
    data: "0x70a08231000000000000000000000000<ADDRESS_NO_0x_PADDED_TO_32B>"
  }, "latest"]
})

Native balance: method: "eth_getBalance", params: ["0x...", "latest"] Tx receipt: method: "eth_getTransactionReceipt", params: ["0x<txhash>"] Event logs: method: "eth_getLogs", params: [{ fromBlock, toBlock, address, topics }] — keep ranges small; huge ranges are rejected upstream (no charge). Gas: method: "eth_gasPrice" / eth_estimateGas

Solana token account: network: "solana", method: "getTokenAccountsByOwner", params: ["<owner>", {"mint": "<mint>"}, {"encoding": "jsonParsed"}]

Batch (charged per element, flat fee paid once — 3 calls = $0.0070, vs $0.0090 sent separately):

blockrun_rpc({ network: "ethereum", body: [
  { jsonrpc: "2.0", id: 1, method: "eth_blockNumber" },
  { jsonrpc: "2.0", id: 2, method: "eth_gasPrice" },
  { jsonrpc: "2.0", id: 3, method: "eth_chainId" }
]})

Failure semantics

Upstream timeout / 5xx → no charge, retry safe.
Malformed body / bad network → HTTP 400, no charge.
JSON-RPC-level errors (e.g. revert on eth_call) come back inside result.error — the call is charged (the node did the work).

Files

Just SKILL.md in skills/rpc of BlockRunAI/blockrun-mcp.

Open the folder on GitHubat commit a7a9b3c

Compare with similar skills

Rpc next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Rpc compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Rpc this skillBlockRunAI/blockrun-mcp	392	—	~1.2k	Automated safety check: Pass	MIT	yesterday
Use Usdccirclefin/skills	155	—	~2.4k	Automated safety check: Notes	Apache-2.0	21 days ago
AlchemyBankrBot/skills	1.2k	—	~3.5k	Automated safety check: Pass	MIT	2 days ago
Quicknodesendaifun/skills	130	1 repos	~5.5k	Automated safety check: Notes	Apache-2.0	2 mo ago
BankrBankrBot/skills	1.2k	—	~5.3k	Automated safety check: Pass	None	2 days ago
NEAR Intents Swap Integrationinternet-court/internet-court-skill	6.4k	2 repos	~939	Automated safety check: Pass	Custom licence	1 mo ago

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Works with

Questions about Rpc

What does Rpc do?

A skill your agent uses when the user needs raw blockchain JSON-RPC access — contract reads (ethcall), native balances, blocks, transactions, logs, gas estimates, or any chain-native RPC method…. Rpc is an agent skill from BlockRunAI/blockrun-mcp. Use when the user needs raw blockchain JSON-RPC access — contract reads (ethcall), native balances, blocks, transactions, logs, gas estimates, or any chain-native RPC method across 40 chains.

When should I use Rpc?

Rpc fits situations like: the user needs raw blockchain JSON-RPC access — contract reads (ethcall); native balances; any chain-native RPC method across 40 chains.

How do I install Rpc in Claude Code?

Run `npx skills add BlockRunAI/blockrun-mcp --skill rpc -a claude-code`. Or copy the skill folder (skills/rpc in BlockRunAI/blockrun-mcp) into .claude/skills/rpc in your project. Claude Code loads it when a task matches its description.

How do I install Rpc in Codex?

Run `npx skills add BlockRunAI/blockrun-mcp --skill rpc -a codex`. Or copy the skill folder (skills/rpc in BlockRunAI/blockrun-mcp) into .agents/skills/rpc in your project. Codex loads it when a task matches its description.

Can I use Rpc in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add BlockRunAI/blockrun-mcp --skill rpc -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rpc, .gemini/skills/rpc, .github/skills/rpc and .opencode/skills/rpc in your project.

What does Rpc need to run?

SKILL.md names no scripts, command-line tools or credentials: Rpc is instructions for the agent only.

Does Rpc access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Rpc safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Rpc use?

Rpc is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Rpc use?

About 1.2k tokens (SKILL.md is roughly 4.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Rpc?

Skills that share tags, products or a category with Rpc: Use Usdc (circlefin/skills, 155 stars), Alchemy (BankrBot/skills, 1.2k stars), Quicknode (sendaifun/skills, 130 stars) and Bankr (BankrBot/skills, 1.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Rpc?

BlockRunAI (a GitHub organization) maintains it in BlockRunAI/blockrun-mcp, which has 392 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 6, 2026.

Source: BlockRunAI/blockrun-mcp on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Rpc

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Multi-chain RPC — every supported chain, one tool

When to use which tool

Networks

Recipes

Failure semantics

Files

Compare with similar skills

Similar skills

More from BlockRunAI/blockrun-mcp

Related

Questions about Rpc