linear_add_comment

Add a comment to a Linear issue

SERVERSage MCP SOURCEsagemcp/sagemcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/sagemcp-sagemcp/linear-add-comment.md

WHAT IT DOES

What linear_add_comment does on Sage MCP

AI agents use linear_add_comment to create or update resources in Sage MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Sage MCP environment.

RISK

Why linear_add_comment is rated Medium

This tool creates new data (a comment) in a reversible manner. Comments can be edited or deleted, making it a Write operation rather than Destructive. The severity is medium because while it modifies project data, the blast radius is limited to adding potentially misleading or spam comments to issues, which could disrupt workflows but doesn't cause data loss or financial impact.

From the tool's definition Tool name 'linear_add_comment' combined with description 'Add a comment to a Linear issue' indicates creation of new comment data on an issue tracking system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs linear_add_comment safely

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

linear_add_comment Rate-limited

linear_add_comment stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "linear_add_comment": {
      "limits": [
        {
          "counter": "linear_add_comment_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about linear_add_comment

What does the linear_add_comment tool do? +

Add a comment to a Linear issue. It is categorised as a Write tool in the Sage MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on linear_add_comment? +

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

What risk level is linear_add_comment? +

linear_add_comment is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit linear_add_comment? +

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

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

linear_add_comment is provided by the Sage MCP server (sagemcp/sagemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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