Medium Risk

oneid

Hardware-anchored identity for AI agents (1id.com). Manage identity, devices, peer verification, and credentials. Call with operation="readme" for full documentation.

Part of the Mailpal MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

AI agents use oneid to create or modify resources in Mailpal. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

Without a policy, an AI agent could call oneid repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Mailpal.

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

mailpal.yaml
tools:
  oneid:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Mailpal policy for all 2 tools.

Tool Name oneid
Category Write
MCP Server Mailpal MCP Server
Risk Level Medium

Agents calling write-class tools like oneid have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

What does the oneid tool do? +

Hardware-anchored identity for AI agents (1id.com). Manage identity, devices, peer verification, and credentials. Call with operation="readme" for full documentation.. It is categorised as a Write tool in the Mailpal MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on oneid? +

Add a rule in your Intercept YAML policy under the tools section for oneid. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Mailpal MCP server.

What risk level is oneid? +

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

Can I rate-limit oneid? +

Yes. Add a rate_limit block to the oneid rule in your Intercept 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 oneid completely? +

Set action: deny in the Intercept policy for oneid. 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 oneid? +

oneid is provided by the Mailpal MCP server (mailpal-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Let agents act without letting them run wild.

Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.

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