add-credential

Add a credential to an authorization vault entry

SERVERFrontmcp SOURCEagentfront/frontmcp

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/frontmcp/add-credential.md

WHAT IT DOES

What add-credential does on Frontmcp

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

RISK

Why add-credential is rated Medium

This tool modifies sensitive credential data by adding entries to an authorization vault. While technically reversible (credentials could be removed), the high sensitivity of credential management and the potential for privilege escalation, unauthorized access, or account compromise if misused by an agent justify a 'high' severity rating.

From the tool's definition Tool description states 'Add a credential to an authorization vault entry' — this creates or modifies credential data in a vault, a Write operation. The use of 'Add' and 'vault entry' indicates reversible modification of authentication/authorization data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add-credential safely

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

add-credential Rate-limited

add-credential 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-credential": {
      "limits": [
        {
          "counter": "add-credential_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 Frontmcp, apply this rule, and every add-credential call is checked against it from then on.

FAQ

Questions about add-credential

What does the add-credential tool do? +

Add a credential to an authorization vault entry. It is categorised as a Write tool in the Frontmcp 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-credential? +

Register the Front MCP server in PolicyLayer and add a rule for add-credential: 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 Frontmcp. Nothing to install.

What risk level is add-credential? +

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

Can I rate-limit add-credential? +

Yes. Add a rate_limit block to the add-credential 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-credential completely? +

Set action: deny in the PolicyLayer policy for add-credential. 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-credential? +

add-credential is provided by the Front MCP server (agentfront/frontmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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