Retrieve detail of one bill by chamber and proceedings URL. Returns title, submitter, committee assignment, and a status timeline parsed from the proceedings page. The proceedingURL must be a URL returned by search_bills.
AI agents call get_bill to retrieve information from Houan without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves existing data from the NDL Kokkai API about Japanese Diet bills. It has no side effects, cannot modify or delete data, and does not execute code or trigger external operations. It is a straightforward data retrieval endpoint.
From the tool's definition Tool retrieves and returns bill details (title, submitter, committee assignment, status timeline) with no modification or execution capability. The description uses 'Retrieve' and 'Returns', indicating read-only operations.
Attacks that exploit this kind of access
Retrieve detail of one bill by chamber and proceedings URL. Returns title, submitter, committee assignment, and a status timeline parsed from the proceedings page. The proceedingURL must be a URL returned by search_bills. It is categorised as a Read tool in the Houan MCP Server, which means it retrieves data without modifying state.
Register the Houan MCP server in PolicyLayer and add a rule for get_bill: 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 Houan. Nothing to install.
get_bill 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_bill 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_bill. 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_bill is provided by the Houan MCP server (shayouworld/houan-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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