list_watchlist_queries

[SUPPORT] Read-only: list saved research watchlist queries for a project (optionally filtered by source_type), each with its watchlist_id, query, source_type, limit, and sort_by.

SERVERMeridian SOURCE@meridianmcp/mcp

Low RISK CLASS

Category Read

Parameters 30 required

Recommended Allowedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/io-github-ajc3xc-meridian/list-watchlist-queries.md

WHAT IT DOES

What list_watchlist_queries does on Meridian

AI agents call list_watchlist_queries to retrieve information from Meridian 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
`project_id`	string	—
`source_type`	string	—	Optional filter.
`project_name`	string	—	Project name — an alternative to project_id; resolved to the id internally. project_id wins if both are given.

Parameters from the server's own tool schema.

RISK

Why list_watchlist_queries is rated Low

Even though list_watchlist_queries 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

RECOMMENDED RULE

The rule that runs list_watchlist_queries safely

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

list_watchlist_queries Allowed

list_watchlist_queries 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_watchlist_queries": {}
  }
}

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

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

FAQ

Questions about list_watchlist_queries

What does the list_watchlist_queries tool do? +

[SUPPORT] Read-only: list saved research watchlist queries for a project (optionally filtered by source_type), each with its watchlist_id, query, source_type, limit, and sort_by. It is categorised as a Read tool in the Meridian MCP Server, which means it retrieves data without modifying state.

What parameters does list_watchlist_queries accept? +

list_watchlist_queries accepts 3 parameters: project_id, source_type, project_name. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on list_watchlist_queries? +

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

What risk level is list_watchlist_queries? +

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

Can I rate-limit list_watchlist_queries? +

Yes. Add a rate_limit block to the list_watchlist_queries 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_watchlist_queries completely? +

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

list_watchlist_queries is provided by the Meridian MCP server (@meridianmcp/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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