update_repo_topics

Set the topics for a repository (replaces all existing topics)

SERVERForgejo SOURCEsqcows/forgejo-mcp

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/sqcows-forgejo-mcp/update-repo-topics.md

WHAT IT DOES

What update_repo_topics does on Forgejo

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

RISK

Why update_repo_topics is rated Medium

This tool creates or modifies data (repository topics) without permanently deleting anything. The operation is reversible since topics can be updated again to different values or cleared. While it affects repository metadata and could be misused to alter repo discoverability, it does not delete data irreversibly, execute arbitrary code, or involve financial transactions.

From the tool's definition Set the topics for a repository (replaces all existing topics) — modifies repository metadata by replacing existing topics, a reversible write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_repo_topics safely

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

update_repo_topics Rate-limited

update_repo_topics 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": {
    "update_repo_topics": {
      "limits": [
        {
          "counter": "update_repo_topics_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 Forgejo, apply this rule, and every update_repo_topics call is checked against it from then on.

FAQ

Questions about update_repo_topics

What does the update_repo_topics tool do? +

Set the topics for a repository (replaces all existing topics). It is categorised as a Write tool in the Forgejo MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_repo_topics? +

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

What risk level is update_repo_topics? +

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

Can I rate-limit update_repo_topics? +

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

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

update_repo_topics is provided by the Forgejo MCP server (sqcows/forgejo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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