29 tools. 15 can modify or destroy data without limits.
4 destructive tools with no built-in limits. Policy required.
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Destructive tools (delete-many, delete-one, drop-collection) permanently delete resources. There is no undo. An agent calling these in a retry loop causes irreversible damage.
Write operations (atlas-create-access-list, atlas-create-db-user, atlas-create-free-cluster) modify state. Without rate limits, an agent can make hundreds of changes in seconds — faster than any human can review or revert.
Execute tools (aggregate) trigger processes with side effects. Builds, notifications, workflows — all fired without throttling.
Intercept sits between your agent and MongoDB. Every tool call checked against your policy before it executes — so your agent can do its job without breaking things.
npx -y @policylayer/intercept scan -- npx -y @mongodb-js/mongodb-mcp-server delete-many:
rules:
- action: deny Destructive tools should never be available to autonomous agents without human approval.
atlas-create-access-list:
rules:
- rate_limit: 30/hour Prevents bulk unintended modifications from agents caught in loops.
atlas-inspect-access-list:
rules:
- rate_limit: 60/minute Controls API costs and prevents retry loops from exhausting upstream rate limits.
Yes. The MongoDB server exposes 4 destructive tools including delete-many, delete-one, drop-collection. These permanently remove resources with no undo. Intercept blocks destructive tools by default so they never reach the upstream server.
The MongoDB server has 10 write tools including atlas-create-access-list, atlas-create-db-user, atlas-create-free-cluster. Set rate limits in your policy file -- for example, rate_limit: 10/hour prevents an agent from making more than 10 modifications per hour. Intercept enforces this at the transport layer.
29 tools across 4 categories: Destructive, Execute, Read, Write. 14 are read-only. 15 can modify, create, or delete data.
One line change. Instead of running the MongoDB server directly, prefix it with Intercept: intercept -c mongodb.yaml -- npx -y @@mongodb-js/mongodb-mcp-server. Download a pre-built policy from policylayer.com/policies/mongodb and adjust the limits to match your use case.
Starter policies available for each. Same risk classification, same one-command setup.
Set budgets, approvals, and hard limits across MCP servers.
npx -y @policylayer/intercept init