get_chain_info
chainpeek: Get the chain id, latest block, head age and gas price of Ethereum, Base or Robinhood Chain. For gas alone use get_gas; for the header alone use get_block. Returns chain_id, the latest block_number and block_timestamp, head_age_s (seconds since the head block, a liveness check), gas_pr...
This record as markdown: /tools/dev-tanod-tanod/get-chain-info.md
What get_chain_info does on Tanod
AI agents call get_chain_info to retrieve information from Tanod without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
chain | string | Yes | ethereum, base or robinhood (Robinhood Chain, chain id 4663). |
Parameters from the server's own tool schema.
Why get_chain_info is rated Low
Even though get_chain_info only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs get_chain_info safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Tanod, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_chain_info, this is the rule to start with:
get_chain_info is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Tanod, apply this rule, and every get_chain_info call is checked against it from then on.
Questions about get_chain_info
chainpeek: Get the chain id, latest block, head age and gas price of Ethereum, Base or Robinhood Chain. For gas alone use get_gas; for the header alone use get_block. Returns chain_id, the latest block_number and block_timestamp, head_age_s (seconds since the head block, a liveness check), gas_price_gwei, base_fee_gwei, and the block's gas used and limit. Three RPC reads. Ethereum, Base and Robinhood only; read-only: nothing is signed or sent. RPC reads are cached up to 30 s. A bad address, hash, hex string, block or range is a 422 before any payment (not charged). Typically under 1 s. Price: USD 0.001. Free: 10 chain reads per IP per UTC day. Docs: https://tanod.dev/learn/ethereum-rpc-reads-api.html. It is categorised as a Read tool in the Tanod MCP Server, which means it retrieves data without modifying state.
get_chain_info accepts 1 parameter: chain. Required: chain. The full parameter table on this page comes from the server's own tool schema.
Register the Tanod MCP server in PolicyLayer and add a rule for get_chain_info: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Tanod. Nothing to install.
get_chain_info is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_chain_info rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_chain_info. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_chain_info is provided by the Tanod MCP server (https://tanod.dev/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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