get_storage_at
chainpeek: Read a contract storage slot on Ethereum, Base or Robinhood Chain. For proxy implementation and admin slots use detect_proxy. Returns the 32-byte word at a storage slot of a contract (value), also as as_uint and, when it looks like an address, as_address, with is_zero; at latest, pendi...
This record as markdown: /tools/dev-tanod-tanod/get-storage-at.md
What get_storage_at does on Tanod
AI agents call get_storage_at 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 |
|---|---|---|---|
slot | string | Yes | Storage slot: 0x-hex up to 32 bytes, or a decimal number (0 is the first slot). |
block | object | — | latest (default), pending, finalized or a block number. |
chain | string | Yes | ethereum, base or robinhood (Robinhood Chain, chain id 4663). |
address | string | Yes | Contract address. |
Parameters from the server's own tool schema.
Why get_storage_at is rated Low
Even though get_storage_at 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.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs get_storage_at 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_storage_at, this is the rule to start with:
get_storage_at 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_storage_at call is checked against it from then on.
Questions about get_storage_at
chainpeek: Read a contract storage slot on Ethereum, Base or Robinhood Chain. For proxy implementation and admin slots use detect_proxy. Returns the 32-byte word at a storage slot of a contract (value), also as as_uint and, when it looks like an address, as_address, with is_zero; at latest, pending, finalized or a block number. Old blocks need an archive node and may fail. 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_storage_at accepts 4 parameters: slot, block, chain, address. Required: slot, chain, address. 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_storage_at: 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_storage_at 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_storage_at 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_storage_at. 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_storage_at 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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