AI agents call bitbucket_get_diff to retrieve information from Sage MCP 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 differences between code versions in a pull request. It is a read-only operation that queries existing data without creating, modifying, deleting, or executing any code. The diff is informational content used for review purposes. Classified as Read with low severity due to minimal blast radius—viewing diffs poses no risk of data loss, unauthorized changes, or resource misuse.
From the tool's definition Tool name 'bitbucket_get_diff' and description 'Get the diff of a pull request' indicate retrieval/querying of diff data with no modification or side effects.
Documented attack patterns abuse exactly the kind of access bitbucket_get_diff gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Sage MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for bitbucket_get_diff:
{
"version": "1",
"default": "deny",
"tools": {
"bitbucket_get_diff": {}
}
}bitbucket_get_diff is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the diff of a pull request. It is categorised as a Read tool in the Sage MCP MCP Server, which means it retrieves data without modifying state.
Register the Sage MCP server in PolicyLayer and add a rule for bitbucket_get_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 Sage MCP. Nothing to install.
bitbucket_get_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 bitbucket_get_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 bitbucket_get_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.
bitbucket_get_diff is provided by the Sage MCP server (sagemcp/sagemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 359 Sage MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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359 Sage MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.