Start a scrcpy session for fast input control and screenshots. When a session is active, tap/swipe/text/screenshot are 10-50x faster. Requires scrcpy-server to be installed.
Part of the Scrcpy MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents invoke start_session to trigger processes or run actions in Scrcpy. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
start_session can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
tools:
start_session:
rules:
- action: allow
rate_limit:
max: 10
window: 60
validate:
required_args: trueSee the full Scrcpy policy for all 38 tools.
Agents calling execute-class tools like start_session have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
start_session is one of the high-risk operations in Scrcpy. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.
Start a scrcpy session for fast input control and screenshots. When a session is active, tap/swipe/text/screenshot are 10-50x faster. Requires scrcpy-server to be installed.. It is categorised as a Execute tool in the Scrcpy MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Add a rule in your Intercept YAML policy under the tools section for start_session. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Scrcpy MCP server.
start_session is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the start_session rule in your Intercept 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 Intercept policy for start_session. 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.
start_session is provided by the Scrcpy MCP server (scrcpy-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept