MCP For Claude Marketplace
Tool Permission Boundary Enforcer

Tool Permission Boundary Enforcer MCP Connector for Claude

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Enforces deterministic permission boundaries for tool execution to prevent unbounded access.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

The Tool Permission Boundary Enforcer provides a deterministic security layer for LLM agents. It prevents unbounded execution by maintaining a strict permission matrix that maps tool names to allowed operations and specific constraint patterns. Using check_permission, agents can verify if a requested action is permitted before execution. The list_boundaries tool allows for inspection of active rules, while validate_resource_pattern provides a way to test resource paths or URLs against constraints. This ensures that tools like file writers or network clients operate only within predefined, safe boundaries.

securitypermissionssandboxingdeterministicgovernancesafety

3 tools expose this connector's capabilities to your AI agent.

check_permission

Determines if a specific tool operation is permitted under current boundary rules

list_boundaries

Retrieves the current active permission boundaries for inspection

validate_resource_pattern

Tests a specific resource string against the regex or exact match rules of a given tool/operation pair

See how to talk to your AI agent using Tool Permission Boundary Enforcer.

Is it okay to write a file to /home/user/config.json using the file_write operation?

The `check_permission` tool would evaluate this against the permission matrix to determine if the path is within the allowed boundaries.

What are the current boundaries for the network tool?

You can call `list_boundaries` with the filter for the network tool to see its specific allowed operations and regex patterns.

Can I validate if 'https://api.example.com' is a permitted URL?

You can use `validate_resource_pattern` to check if that specific URL matches the regex patterns defined for the network tool.

It uses `check_permission` to validate every requested operation against a predefined permission matrix. If the operation or the target resource does not match the allowed patterns, the request is blocked.

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