16 tools. 5 can modify or destroy data without limits.
5 write tools that can modify data. Rate limits recommended.
Last updated:
Write operations (create_prompt_template) modify state. Without rate limits, an agent can make hundreds of changes in seconds — faster than any human can review or revert.
Execute tools (rerun_workflow, run_evaluation_tests, run_pipeline) trigger processes with side effects. Builds, notifications, workflows — all fired without throttling.
create_prompt_template:
rules:
- rate_limit: 30/hour Prevents bulk unintended modifications from agents caught in loops.
analyze_diff:
rules:
- rate_limit: 60/minute Controls API costs and prevents retry loops from exhausting upstream rate limits.
The CircleCI MCP Server server has 1 write tools including create_prompt_template. 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 3 categories: Execute, Read, Write. 11 are read-only. 5 can modify, create, or delete data.
One line change. Instead of running the CircleCI MCP Server server directly, prefix it with Intercept: intercept -c circleci-public-mcp-server-circleci.yaml -- npx -y @CircleCI-Public/mcp-server-circleci. Download a pre-built policy from policylayer.com/policies/circleci-public-mcp-server-circleci and adjust the limits to match your use case.
Starter policies available for each. Same risk classification, same one-command setup.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.