Add a repository as a subproject of the current project. Pass
AI agents use subproject_add_repo to create or update resources in Trace — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Trace environment.
This tool modifies project structure by adding a subproject dependency. It is a write operation because it creates or modifies configuration data (subproject linkage) in a reversible manner.
From the tool's definition Tool name 'subproject_add_repo' and description 'Add a repository as a subproject' indicate creation/modification of project configuration by adding a new repository reference.
Documented attack patterns abuse exactly the kind of access subproject_add_repo gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Trace, and nothing reaches the server without passing your rules. This is the rule we recommend for subproject_add_repo:
{
"version": "1",
"default": "deny",
"tools": {
"subproject_add_repo": {
"limits": [
{
"counter": "subproject_add_repo_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}subproject_add_repo 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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Add a repository as a subproject of the current project. Pass. It is categorised as a Write tool in the Trace MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Trace MCP server in PolicyLayer and add a rule for subproject_add_repo: 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 Trace. Nothing to install.
subproject_add_repo 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 subproject_add_repo 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 subproject_add_repo. 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.
subproject_add_repo is provided by the Trace MCP server (nikolai-vysotskyi/trace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 178 Trace tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
178 Trace tools catalogued and risk-classified — across an index of 42,500+ MCP servers.