Get the diff of a pull request
AI agents call bb_get_pull_request_diff to retrieve information from Bitbucket Cloud MCP Server 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 the differences between code versions in a pull request. It is a read-only operation that queries existing data without creating, modifying, deleting, or executing anything. The blast radius of misuse is minimal—an AI could at most view diffs it shouldn't have access to, which is a confidentiality concern but not operational damage.
From the tool's definition Tool name 'bb_get_pull_request_diff' and description 'Get the diff of a pull request' indicate retrieval of data with no modification or side effects.
Attacks that exploit this kind of access
Get the diff of a pull request. It is categorised as a Read tool in the Bitbucket Cloud MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Bitbucket Cloud MCP Server MCP server in PolicyLayer and add a rule for bb_get_pull_request_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 Bitbucket Cloud MCP Server. Nothing to install.
bb_get_pull_request_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 bb_get_pull_request_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 bb_get_pull_request_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.
bb_get_pull_request_diff is provided by the Bitbucket Cloud MCP Server MCP server (or2ooo/bitbucket-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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