discover_tools

SERVER19hz SOURCEhttps://gateway.pipeworx.io/19hz/mcp

Low RISK CLASS

Category Read

Parameters 61 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-pipeworx-io-19hz/discover-tools.md

WHAT IT DOES

What discover_tools does on 19hz

AI agents call discover_tools to retrieve information from 19hz 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
`q`	string	—	Alias for query.
`task`	string	—	Alias for query.
`limit`	number	—	Maximum number of tools to return (default 20, max 50)
`query`	string	Yes	Natural language description of what you want to do (e.g., "analyze housing market trends", "look up FDA drug approvals", "find trade data between countries").
`search`	string	—	Alias for query.
`description`	string	—	Alias for query.

Parameters from the server's own tool schema.

RISK

Why discover_tools is rated Low

This tool performs discovery/search of available tools — it retrieves metadata about other tools (names, descriptions, schemas). It has no side effects, creates nothing, and modifies nothing. Pure read/lookup operation with minimal blast radius if misused.

From the tool's definition Find tools by describing the data or task. Use when you need to browse, search, look up, or discover what tools exist

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs discover_tools safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 19hz, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For discover_tools, this is the rule to start with:

discover_tools Allowed

discover_tools 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": {
    "discover_tools": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect 19hz, apply this rule, and every discover_tools call is checked against it from then on.

FAQ

Questions about discover_tools

What does the discover_tools tool do? +

Find tools by describing the data or task. Use when you need to browse, search, look up, or discover what tools exist for: SEC filings, financials, revenue, profit, FDA drugs, adverse events, FRED economic data, Census demographics, BLS jobs/unemployment/inflation, ATTOM real estate, ClinicalTrials, USPTO patents, weather, news, crypto, stocks. Returns the top-N most relevant tools with names, descriptions, and full input schemas (with curated examples) — each result is ready to call directly, no second schema lookup needed. Call this FIRST when you have many tools available and want to see the option set (not just one answer). It is categorised as a Read tool in the 19hz MCP Server, which means it retrieves data without modifying state.

What parameters does discover_tools accept? +

discover_tools accepts 6 parameters: q, task, limit, query, search, description. Required: query. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on discover_tools? +

Register the 19hz MCP server in PolicyLayer and add a rule for discover_tools: 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 19hz. Nothing to install.

What risk level is discover_tools? +

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

Can I rate-limit discover_tools? +

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

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

discover_tools is provided by the 19hz MCP server (https://gateway.pipeworx.io/19hz/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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