AI agents call plaid_balances to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
secret | string | Yes | |
client_id | string | Yes | |
account_ids | array | — | |
environment | string | — | |
access_token | string | Yes |
Parameters from the server's own tool schema.
This tool retrieves financial account balance information from Plaid-linked accounts. While it is a Read operation (no side effects), the severity is high because it accesses sensitive financial data that could expose account details, enable fraud investigation, or inform targeted attacks. The blast radius is significant if an AI agent misuses access to real-time account balances across multiple financial accounts.
From the tool's definition Tool description states 'Get real-time account balances' — a retrieval operation with no modification or deletion of data.
Risk signalsHandles credentials or secrets (secret)
Attacks that exploit this kind of access
Get real-time account balances for a Plaid-linked item. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
plaid_balances accepts 5 parameters: secret, client_id, account_ids, environment, access_token. Required: secret, client_id, access_token. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for plaid_balances: 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 UnClick. Nothing to install.
plaid_balances is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the plaid_balances 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.
Set action: deny in the PolicyLayer policy for plaid_balances. 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.
plaid_balances is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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