add_collaborator

Add a collaborator to a repository

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/add-collaborator.md

WHAT IT DOES

What add_collaborator does on Forgejo

AI agents use add_collaborator 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 add_collaborator is rated Medium

This tool modifies repository state by adding a collaborator, which changes access control and permissions. It is a Write operation because it creates/modifies data (the collaborator list and their associated permissions) reversibly. It is not Destructive since the action can be undone by removing the collaborator.

From the tool's definition 'Add a collaborator to a repository' — this creates a new access relationship by modifying repository permissions/metadata to include a new collaborator. It is reversible (the collaborator can be removed).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_collaborator 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 add_collaborator, this is the rule to start with:

add_collaborator Rate-limited

add_collaborator 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": {
    "add_collaborator": {
      "limits": [
        {
          "counter": "add_collaborator_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 add_collaborator call is checked against it from then on.

FAQ

Questions about add_collaborator

What does the add_collaborator tool do? +

Add a collaborator to a repository. 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 add_collaborator? +

Register the Forgejo MCP server in PolicyLayer and add a rule for add_collaborator: 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 add_collaborator? +

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

Can I rate-limit add_collaborator? +

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

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

add_collaborator 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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