16 tools. 7 can modify or destroy data without limits.
7 write tools that can modify data. Rate limits recommended.
Last updated:
Write operations (create_namespace, create_table, create_table_bucket) modify state. Without rate limits, an agent can make hundreds of changes in seconds — faster than any human can review or revert.
create_namespace:
rules:
- rate_limit: 30/hour Prevents bulk unintended modifications from agents caught in loops.
append_rows_to_table:
rules:
- rate_limit: 60/minute Controls API costs and prevents retry loops from exhausting upstream rate limits.
The AWS S3 Tables MCP Server server has 7 write tools including create_namespace, create_table, create_table_bucket. 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.
16 tools across 2 categories: Read, Write. 9 are read-only. 7 can modify, create, or delete data.
One line change. Instead of running the AWS S3 Tables MCP Server server directly, prefix it with Intercept: intercept -c aws-s3-tables-mcp-server.yaml -- npx -y @awslabs.s3-tables-mcp-server. Download a pre-built policy from policylayer.com/policies/aws-s3-tables-mcp-server and adjust the limits to match your use case.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.