Retrieves bank account balances and transaction history via PSD2 Open Banking (TrueLayer), covering 300+ UK and European banks. Returns the account balance, ISO 4217 currency code, and up to 100 recent transactions — each with date, merchant description, amount, and category. Supports optional da...
Part of the Inferventis MCP Server server.
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AI agents use open_banking_transactions to create or modify resources in Inferventis MCP Server. 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 open_banking_transactions repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Inferventis MCP Server.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"open_banking_transactions": {
"limits": [
{
"counter": "open_banking_transactions_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Inferventis MCP Server policy for all 20 tools.
These attack patterns abuse exactly the kind of access open_banking_transactions gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Retrieves bank account balances and transaction history via PSD2 Open Banking (TrueLayer), covering 300+ UK and European banks. Returns the account balance, ISO 4217 currency code, and up to 100 recent transactions — each with date, merchant description, amount, and category. Supports optional date filtering to narrow the transaction window. Use this tool when an agent needs to inspect a user's spending history, verify a payment has cleared, assess account affordability, categorise recent bank transactions, or produce a financial summary from live bank data. Do not use for payment initiation — this tool is strictly read-only. Do not use for Stripe-specific payment records, subscription billing, or failed charge investigation — use stripe_payments instead. Requires a TrueLayer access token; returns structured mock data if no token is configured.. It is categorised as a Write tool in the Inferventis MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Inferventis MCP Server MCP server in PolicyLayer and add a rule for open_banking_transactions: 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 Inferventis MCP Server. Nothing to install.
open_banking_transactions is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the open_banking_transactions 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 open_banking_transactions. 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.
open_banking_transactions is provided by the Inferventis MCP Server MCP server (https://mcp-server-295985738387.europe-west1.run.app/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 20 Inferventis MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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