Detect potential foreign key lock contention and blocking scenarios.
How to control PostgreSQL_detect_foreign_key_lock_contention ↓
AI agents call PostgreSQL_detect_foreign_key_lock_contention to retrieve information from Postgres without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool analyzes and detects lock contention patterns in PostgreSQL, which is a read-only diagnostic operation. It queries system catalog views and lock tables to identify blocking scenarios without modifying any data or executing any side effects. Similar to sibling tools like 'analyze_foreign_key_locks', it is a monitoring/diagnostic tool.
From the tool's definition 'Detect potential foreign key lock contention and blocking scenarios' — purely diagnostic/observational language with no modification or execution implied
Documented attack patterns abuse exactly the kind of access PostgreSQL_detect_foreign_key_lock_contention gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Postgres, and nothing reaches the server without passing your rules. This is the rule we recommend for PostgreSQL_detect_foreign_key_lock_contention:
{
"version": "1",
"default": "deny",
"tools": {
"PostgreSQL_detect_foreign_key_lock_contention": {}
}
}PostgreSQL_detect_foreign_key_lock_contention is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Detect potential foreign key lock contention and blocking scenarios. It is categorised as a Read tool in the Postgres MCP Server, which means it retrieves data without modifying state.
Register the Postgres MCP server in PolicyLayer and add a rule for PostgreSQL_detect_foreign_key_lock_contention: 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 Postgres. Nothing to install.
PostgreSQL_detect_foreign_key_lock_contention 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 PostgreSQL_detect_foreign_key_lock_contention 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 PostgreSQL_detect_foreign_key_lock_contention. 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.
PostgreSQL_detect_foreign_key_lock_contention is provided by the Postgres MCP server (mukul975/postgres-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Postgres, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
239 Postgres tools catalogued and risk-classified — across an index of 43,000+ MCP servers.