watchers.company-news

SERVERMcp SOURCE@2sio/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-2s-io-mcp/watchers.company-news.md

WHAT IT DOES

What watchers.company-news does on Mcp

AI agents call watchers.company-news to retrieve information from Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why watchers.company-news is rated Low

This tool queries and retrieves publicly available company news data. While it establishes a watcher/subscription mechanism, it does not create, modify, delete, or execute code. The payment model (pay-per-call in USDC) is a billing mechanism, not a financial operation that moves money on behalf of the user or commits financial obligations beyond the subscription itself.

From the tool's definition Tool retrieves news articles about companies via Finnhub API and sets up callbacks when new articles are published.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs watchers.company-news safely

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

watchers.company-news Allowed

watchers.company-news 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": {
    "watchers.company-news": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp, apply this rule, and every watchers.company-news call is checked against it from then on.

FAQ

Questions about watchers.company-news

What does the watchers.company-news tool do? +

WATCHER: get a signed callback when a new news article is published about a US company. Arm once, pay once. Pass ticker; optionally keyword to only fire on headlines containing it. Fires once per new article (deduped by id); bounded by maxFires/expiry. Existing articles at arm time are baselined. News via Finnhub. Signed (verify offline) + retried; recoverable via watchers.status. Returns a watche. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on watchers.company-news? +

Register the MCP server in PolicyLayer and add a rule for watchers.company-news: 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 Mcp. Nothing to install.

What risk level is watchers.company-news? +

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

Can I rate-limit watchers.company-news? +

Yes. Add a rate_limit block to the watchers.company-news 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 watchers.company-news completely? +

Set action: deny in the PolicyLayer policy for watchers.company-news. 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 watchers.company-news? +

watchers.company-news is provided by the MCP server (@2sio/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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