Show description and changes in a revision of a Jujutsu (jj) repository compared to its parent(s). Useful for reviewing the exact changes made in a specific commit. Parameters: revision (The revision to show, defaults to working copy), repoPath (Optional path to repo root or working directory), c...
AI agents call show 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 retrieves and displays metadata and diffs from a version control repository. It performs no side effects: it does not create, modify, delete, or execute anything. It is analogous to 'git show' — a safe read operation. The parameters (revision, repoPath, cwd, context) control what information is displayed but do not alter state.
From the tool's definition Tool name and description: 'Show description and changes in a revision' — displays information about commits without modifying, deleting, or executing code.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
Show description and changes in a revision of a Jujutsu (jj) repository compared to its parent(s). Useful for reviewing the exact changes made in a specific commit. Parameters: revision (The revision to show, defaults to working copy), 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 show: 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.
show 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 show 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 show. 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.
show 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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