AI agents use bb_create_repository to create or update resources in MCP Bitbucket Python — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP Bitbucket Python environment.
Creating a repository is a write operation that modifies the state of the Bitbucket workspace by adding a new resource. While reversible (via deletion), it affects infrastructure and may incur costs or quota impacts. The severity is high due to the blast radius: an unintended repository creation can clutter workspaces, consume resources, and potentially expose the organization's development structure.
From the tool's definition Tool name 'bb_create_repository' and description 'Create a new repository in Bitbucket' directly indicate creation of a new resource. This is a reversible write operation (repositories can be deleted), not destructive.
Documented attack patterns abuse exactly the kind of access bb_create_repository gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Bitbucket Python, and nothing reaches the server without passing your rules. This is the rule we recommend for bb_create_repository:
{
"version": "1",
"default": "deny",
"tools": {
"bb_create_repository": {
"limits": [
{
"counter": "bb_create_repository_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}bb_create_repository stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Create a new repository in Bitbucket. It is categorised as a Write tool in the MCP Bitbucket Python MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the MCP Bitbucket Python MCP server in PolicyLayer and add a rule for bb_create_repository: 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 MCP Bitbucket Python. Nothing to install.
bb_create_repository is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the bb_create_repository 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_create_repository. 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_create_repository is provided by the MCP Bitbucket Python MCP server (kallows/mcp-bitbucket). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Bitbucket Python, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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10 MCP Bitbucket Python tools catalogued and risk-classified — across an index of 43,000+ MCP servers.