keywords

{d}

SERVERX402 Middleware SOURCE@gadgethumans/x402

Low RISK CLASS

Category Read

Parameters 51 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/com-gadgethumans-swarm-x402-middleware/keywords.md

WHAT IT DOES

What keywords does on X402 Middleware

AI agents call keywords to retrieve information from X402 Middleware 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
`to`	string	—
`desc`	string	—
`text`	string	Yes
`tool`	string	—
`params_desc`	string	—

Parameters from the server's own tool schema.

RISK

Why keywords is rated Low

Based solely on the name 'keywords', this tool most likely performs keyword extraction, identification, or listing from content—a read-only operation with no side effects. However, confidence is reduced to 0.5 because the description is empty/malformed, preventing verification of actual behavior.

From the tool's definition Tool name 'keywords' suggests keyword extraction or retrieval. Description field contains only '{d}', which is uninformative and does not reveal actual functionality.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs keywords safely

PolicyLayer is an MCP gateway: it sits between your AI agents and X402 Middleware, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For keywords, this is the rule to start with:

keywords Allowed

keywords 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": {
    "keywords": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect X402 Middleware, apply this rule, and every keywords call is checked against it from then on.

FAQ

Questions about keywords

What does the keywords tool do? +

{d}. It is categorised as a Read tool in the X402 Middleware MCP Server, which means it retrieves data without modifying state.

What parameters does keywords accept? +

keywords accepts 5 parameters: to, desc, text, tool, params_desc. Required: text. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on keywords? +

Register the X402 Middleware MCP server in PolicyLayer and add a rule for keywords: 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 X402 Middleware. Nothing to install.

What risk level is keywords? +

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

Can I rate-limit keywords? +

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

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

keywords is provided by the X402 Middleware MCP server (@gadgethumans/x402). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on X402 Middleware, and thousands of servers like it.

This server

All 58 X402 Middleware tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →