user_activity

HTTP: GET /v1/reddit/user_activity/{username}

SERVERReplyNodes SOURCEhttps://mcp.replynodes.com/mcp

Low RISK CLASS

Category Read

Parameters 21 required

Recommended Allowedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/com-replynodes-mcp/user-activity.md

WHAT IT DOES

What user_activity does on ReplyNodes

AI agents call user_activity to retrieve information from ReplyNodes 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
`limit`	integer	—	query parameter
`username`	string	Yes	path parameter

Parameters from the server's own tool schema.

RISK

Why user_activity is rated Low

Queries publicly available Reddit user activity; no data modification or side effects.

From the tool's definition GET /v1/reddit/user_activity/{username} retrieves public user activity data

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs user_activity safely

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

user_activity Allowed

user_activity 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": {
    "user_activity": {}
  }
}

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

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

FAQ

Questions about user_activity

What does the user_activity tool do? +

HTTP: GET /v1/reddit/user_activity/{username}. It is categorised as a Read tool in the ReplyNodes MCP Server, which means it retrieves data without modifying state.

What parameters does user_activity accept? +

user_activity accepts 2 parameters: limit, username. Required: username. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on user_activity? +

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

What risk level is user_activity? +

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

Can I rate-limit user_activity? +

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

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

user_activity is provided by the ReplyNodes MCP server (https://mcp.replynodes.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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