list_contracts_by_trait

List contracts that implement a specific trait

SERVERStacks AI MCP Server SOURCEstack-ai-mcp/stacks-mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/stack-ai-mcp-stacks-mcp-server/list-contracts-by-trait.md

WHAT IT DOES

What list_contracts_by_trait does on Stacks AI MCP Server

AI agents call list_contracts_by_trait to retrieve information from Stacks AI MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_contracts_by_trait is rated Low

This tool retrieves or queries information about contracts matching specific criteria. It performs no mutations, deletions, or financial operations. The verb 'list' and the passive information retrieval nature of the operation clearly place it in the Read category. Severity is low as misuse would only result in information disclosure, not irreversible changes or financial harm.

From the tool's definition Tool name 'list_contracts_by_trait' and description 'List contracts that implement a specific trait' indicate a query/retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_contracts_by_trait safely

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

list_contracts_by_trait Allowed

list_contracts_by_trait 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": {
    "list_contracts_by_trait": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect Stacks AI MCP Server, apply this rule, and every list_contracts_by_trait call is checked against it from then on.

FAQ

Questions about list_contracts_by_trait

What does the list_contracts_by_trait tool do? +

List contracts that implement a specific trait. It is categorised as a Read tool in the Stacks AI MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_contracts_by_trait? +

Register the Stacks AI MCP Server MCP server in PolicyLayer and add a rule for list_contracts_by_trait: 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 Stacks AI MCP Server. Nothing to install.

What risk level is list_contracts_by_trait? +

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

Can I rate-limit list_contracts_by_trait? +

Yes. Add a rate_limit block to the list_contracts_by_trait 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 list_contracts_by_trait completely? +

Set action: deny in the PolicyLayer policy for list_contracts_by_trait. 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 list_contracts_by_trait? +

list_contracts_by_trait is provided by the Stacks AI MCP Server MCP server (stack-ai-mcp/stacks-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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