Verify that live MCP servers still match a previously saved lock file. Detects schema drift, added/removed tools, and breaking changes.
Part of the Mcp Observatory server.
Free to start. No card required.
AI agents use lock_verify to create or modify resources in Mcp Observatory. 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 lock_verify 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 Mcp Observatory.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"lock_verify": {
"limits": [
{
"counter": "lock_verify_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Mcp Observatory policy for all 13 tools.
These attack patterns abuse exactly the kind of access lock_verify 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.
Verify that live MCP servers still match a previously saved lock file. Detects schema drift, added/removed tools, and breaking changes.. It is categorised as a Write tool in the Mcp Observatory MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mcp Observatory MCP server in PolicyLayer and add a rule for lock_verify: 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 Mcp Observatory. Nothing to install.
lock_verify 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 lock_verify 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 lock_verify. 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.
lock_verify is provided by the Mcp Observatory MCP server (@kryptosai/mcp-observatory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 13 Mcp Observatory tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.