Show the source change for each line of a file in a Jujutsu (jj) repository. Useful for understanding how each line of a file has evolved. Parameters: path (Path to the file to annotate), revision (Optional revision to annotate from, defaults to working copy), repoPath (Optional path to repo root...
AI agents call file-annotate 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 annotation/blame information for a file in the repository. It queries historical data without modifying anything, equivalent to 'git blame'. No side effects possible.
From the tool's definition Show the source change for each line of a file
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
Show the source change for each line of a file in a Jujutsu (jj) repository. Useful for understanding how each line of a file has evolved. Parameters: path (Path to the file to annotate), revision (Optional revision to annotate from, defaults to working copy), repoPath (Optional path to repo root or working directory), cwd (Optional working directory to run the command in). 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 file-annotate: 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.
file-annotate 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 file-annotate 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 file-annotate. 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.
file-annotate 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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