15 tools. 10 can modify or destroy data without limits.
3 destructive tools with no built-in limits. Policy required.
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Destructive tools (redis_database_delete, redis_database_delete_backup, redis_database_reset_password) permanently delete resources. There is no undo. An agent calling these in a retry loop causes irreversible damage.
Write operations (redis_database_create_backup, redis_database_create_new, redis_database_restore_backup) modify state. Without rate limits, an agent can make hundreds of changes in seconds — faster than any human can review or revert.
Execute tools (redis_database_run_multiple_redis_commands, redis_database_run_single_redis_command) trigger processes with side effects. Builds, notifications, workflows — all fired without throttling.
Intercept sits between your agent and Upstash. 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 @@upstash/mcp-server redis_database_delete:
rules:
- action: deny Destructive tools should never be available to autonomous agents without human approval.
redis_database_create_backup:
rules:
- rate_limit: 30/hour Prevents bulk unintended modifications from agents caught in loops.
redis_database_get_details:
rules:
- rate_limit: 60/minute Controls API costs and prevents retry loops from exhausting upstream rate limits.
Yes. The Upstash server exposes 3 destructive tools including redis_database_delete, redis_database_delete_backup, redis_database_reset_password. These permanently remove resources with no undo. Intercept blocks destructive tools by default so they never reach the upstream server.
The Upstash server has 5 write tools including redis_database_create_backup, redis_database_create_new, redis_database_restore_backup. 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.
15 tools across 4 categories: Destructive, Execute, Read, Write. 5 are read-only. 10 can modify, create, or delete data.
One line change. Instead of running the Upstash server directly, prefix it with Intercept: intercept -c upstash.yaml -- npx -y @@@upstash/mcp-server. Download a pre-built policy from policylayer.com/policies/upstash 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