Compare changes to the repository between two operations in a Jujutsu (jj) repository. Shows what changed between operation states. Parameters: from (Operation to show changes from), to (Operation to show changes to), repoPath (Optional path to repo root or working directory), cwd (Optional worki...
AI agents call operation-diff to retrieve information from Jj without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only reads and displays the diff between two operation states in a Jujutsu repository. It has no side effects and does not modify any data.
From the tool's definition Compare changes to the repository between two operations... Shows what changed between operation states
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
Compare changes to the repository between two operations in a Jujutsu (jj) repository. Shows what changed between operation states. Parameters: from (Operation to show changes from), to (Operation to show changes to), repoPath (Optional path to repo root or working directory), cwd (Optional working directory to run the command in), context (Optional number of lines of context to show). It is categorised as a Read tool in the Jj MCP Server, which means it retrieves data without modifying state.
Register the Jj MCP server in PolicyLayer and add a rule for operation-diff: 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 Jj. Nothing to install.
operation-diff is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the operation-diff 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 operation-diff. 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.
operation-diff is provided by the Jj MCP server (jj-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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