cs_dbg_restart
Restart the current C# debug session. Uses the DAP restart request when the adapter advertises supportsRestartRequest, otherwise falls back to terminate + relaunch — so it works on every adapter (netcoredbg advertises none, so the relaunch path runs). Reuses the last cs_dbg_launch/cs_dbg_attach p...
This record as markdown: /tools/breakpoint-mcp/cs-dbg-restart.md
What cs_dbg_restart does on Breakpoint
AI agents invoke cs_dbg_restart to trigger actions in Breakpoint. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
| Parameter | Type | Required | Description |
|---|---|---|---|
args | array | — | Override the program arguments (launched sessions) |
program | string | — | Override the launched program (launched sessions) |
stop_on_entry | boolean | — | Override stop-at-entry for the restart (launched sessions) |
Parameters from the server's own tool schema.
Why cs_dbg_restart is rated High
This tool executes a debugger restart operation, which is a control-flow action that can alter program execution state. While not destructive (the operation is reversible), it clearly triggers external operations (restarting a debug session, relaunching a program) that fall under the Execute category.
From the tool's definition Tool description explicitly states it "Restart[s] the current C# debug session" and performs a DAP `restart` request or `terminate + relaunch`.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs cs_dbg_restart safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cs_dbg_restart, this is the rule to start with:
cs_dbg_restart stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every cs_dbg_restart call is checked against it from then on.
Questions about cs_dbg_restart
Restart the current C# debug session. Uses the DAP restart request when the adapter advertises supportsRestartRequest, otherwise falls back to terminate + relaunch — so it works on every adapter (netcoredbg advertises none, so the relaunch path runs). Reuses the last cs_dbg_launch/cs_dbg_attach parameters; pass stop_on_entry / program / args to override them for a launched session. method in the result reports which path ran ('restart' = native DAP restart, 'relaunch' = terminate + fresh handshake). Requires a session started with cs_dbg_launch/cs_dbg_attach. It is categorised as a Execute tool in the Breakpoint MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
cs_dbg_restart accepts 3 parameters: args, program, stop_on_entry. The full parameter table on this page comes from the server's own tool schema.
Register the Breakpoint MCP server in PolicyLayer and add a rule for cs_dbg_restart: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Breakpoint. Nothing to install.
cs_dbg_restart 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 cs_dbg_restart rule in your PolicyLayer 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 PolicyLayer policy for cs_dbg_restart. 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.
cs_dbg_restart is provided by the Breakpoint MCP server (breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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