get_v2_historicalChainTvl__by_chain

Get historical TVL (excludes liquid staking and double counted tvl) of a chain

SERVERDefillama SOURCE@nic0xflamel/defillama-mcp-server

Low RISK CLASS

Category Read

Parameters 11 required

Recommended Allowedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/defillama/get-v2-historicalchaintvl--by-chain.md

WHAT IT DOES

What get_v2_historicalChainTvl__by_chain does on Defillama

AI agents call get_v2_historicalChainTvl__by_chain to retrieve information from Defillama 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	chain slug, you can get these from /chains or the chains property on /protocols

Parameters from the server's own tool schema.

RISK

Why get_v2_historicalChainTvl__by_chain is rated Low

This tool queries and returns historical Total Value Locked (TVL) information for a blockchain chain. It performs a read-only operation that retrieves existing data without creating, modifying, executing code, deleting, or committing financial transactions. The lack of any side effects and the explicit 'get' pattern places it firmly in the Read category.

From the tool's definition Tool name contains 'get_' prefix and description states it retrieves 'historical TVL' data. The verb 'Get' combined with action of querying historical blockchain metrics indicates data retrieval with no modification or execution capability.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_v2_historicalChainTvl__by_chain safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Defillama, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_v2_historicalChainTvl__by_chain, this is the rule to start with:

get_v2_historicalChainTvl__by_chain Allowed

get_v2_historicalChainTvl__by_chain is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_v2_historicalChainTvl__by_chain": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Defillama, apply this rule, and every get_v2_historicalChainTvl__by_chain call is checked against it from then on.

FAQ

Questions about get_v2_historicalChainTvl__by_chain

What does the get_v2_historicalChainTvl__by_chain tool do? +

Get historical TVL (excludes liquid staking and double counted tvl) of a chain. It is categorised as a Read tool in the Defillama MCP Server, which means it retrieves data without modifying state.

What parameters does get_v2_historicalChainTvl__by_chain accept? +

get_v2_historicalChainTvl__by_chain accepts 1 parameter: chain. Required: chain. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on get_v2_historicalChainTvl__by_chain? +

Register the Defillama MCP server in PolicyLayer and add a rule for get_v2_historicalChainTvl__by_chain: 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 Defillama. Nothing to install.

What risk level is get_v2_historicalChainTvl__by_chain? +

get_v2_historicalChainTvl__by_chain is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_v2_historicalChainTvl__by_chain? +

Yes. Add a rate_limit block to the get_v2_historicalChainTvl__by_chain 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.

How do I block get_v2_historicalChainTvl__by_chain completely? +

Set action: deny in the PolicyLayer policy for get_v2_historicalChainTvl__by_chain. 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.

What MCP server provides get_v2_historicalChainTvl__by_chain? +

get_v2_historicalChainTvl__by_chain is provided by the Defillama MCP server (@nic0xflamel/defillama-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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