Create an incident timeline event with optional known GitLab incident timeline tags.
AI agents use gitlab_create_timeline_event to create or update resources in Gitlab — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Gitlab environment.
This tool creates new data (timeline event records) in a reversible manner. It does not delete, execute arbitrary code, move money, or trigger pipelines. The blast radius is medium because incorrect timeline events could confuse incident response workflows, but the operation is reversible (timeline events can be deleted or edited).
From the tool's definition Tool description states 'Create an incident timeline event' — a create operation that writes data to GitLab's incident management system.
Documented attack patterns abuse exactly the kind of access gitlab_create_timeline_event gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Gitlab, and nothing reaches the server without passing your rules. This is the rule we recommend for gitlab_create_timeline_event:
{
"version": "1",
"default": "deny",
"tools": {
"gitlab_create_timeline_event": {
"limits": [
{
"counter": "gitlab_create_timeline_event_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}gitlab_create_timeline_event 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 an incident timeline event with optional known GitLab incident timeline tags. It is categorised as a Write tool in the Gitlab MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Gitlab MCP server in PolicyLayer and add a rule for gitlab_create_timeline_event: 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 Gitlab. Nothing to install.
gitlab_create_timeline_event 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 gitlab_create_timeline_event 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 gitlab_create_timeline_event. 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.
gitlab_create_timeline_event is provided by the Gitlab MCP server (mcpland/gitlab-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Gitlab, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
190 Gitlab tools catalogued and risk-classified — across an index of 43,000+ MCP servers.