Get remaining card load limit for a specific card
AI agents call pex_get_card_load_limit_remaining to retrieve information from PEX MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries card load limit information, returning a numeric value with no side effects. It retrieves existing data without creating, modifying, deleting, executing code, or transferring funds. The action is purely informational, consistent with other sibling 'pex_get_*' tools that are all read operations.
From the tool's definition Tool name 'pex_get_card_load_limit_remaining' and description 'Get remaining card load limit for a specific card' indicate a read-only operation that retrieves data about spending limits without modifying any state.
Attacks that exploit this kind of access
Get remaining card load limit for a specific card. It is categorised as a Read tool in the PEX MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PEX MCP Server MCP server in PolicyLayer and add a rule for pex_get_card_load_limit_remaining: 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 PEX MCP Server. Nothing to install.
pex_get_card_load_limit_remaining 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 pex_get_card_load_limit_remaining 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 pex_get_card_load_limit_remaining. 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.
pex_get_card_load_limit_remaining is provided by the PEX MCP Server MCP server (pexcard/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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