updateMemberRole

SERVERStable Baseline SOURCEhttps://api.stablebaseline.io/functions/v1/cloud-serve/mcp

Medium RISK CLASS

Category Write

Parameters 33 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-stablebaseline-sb/updatememberrole.md

WHAT IT DOES

What updateMemberRole does on Stable Baseline

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

Parameter	Type	Required	Description
`user_id`	string	Yes	Target user UUID.
`organisation_id`	string	Yes	Organisation UUID. Must match the credential's organisation.
`organization_role`	string	Yes

Parameters from the server's own tool schema.

RISK

Why updateMemberRole is rated Medium

This tool modifies organizational membership data (role assignments) without deleting records, making it Write rather than Destructive. However, the blast radius is high because role changes directly affect access control and organizational authority—a misused promotion could grant an AI agent or attacker admin privileges across the company brain platform.

From the tool's definition Tool updates a member's role (admin or member), modifying organizational permissions. Description explicitly states it changes roles and refuses self-promotion, indicating reversible state mutation of access control.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs updateMemberRole safely

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

updateMemberRole Rate-limited

updateMemberRole 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": {
    "updateMemberRole": {
      "limits": [
        {
          "counter": "updatememberrole_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 Stable Baseline, apply this rule, and every updateMemberRole call is checked against it from then on.

FAQ

Questions about updateMemberRole

What does the updateMemberRole tool do? +

Update an organisation member's role (admin or member). Owners cannot be changed via this tool. Refuses self-promotion. Rate limit 30/min. Use when the user asks to promote someone to admin, demote an admin to member, or change a teammate's role. It is categorised as a Write tool in the Stable Baseline MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does updateMemberRole accept? +

updateMemberRole accepts 3 parameters: user_id, organisation_id, organization_role. Required: user_id, organisation_id, organization_role. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on updateMemberRole? +

Register the Stable Baseline MCP server in PolicyLayer and add a rule for updateMemberRole: 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 Stable Baseline. Nothing to install.

What risk level is updateMemberRole? +

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

Can I rate-limit updateMemberRole? +

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

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

updateMemberRole is provided by the Stable Baseline MCP server (https://api.stablebaseline.io/functions/v1/cloud-serve/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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