unpin

Remove a ranking pin by target. Pass either symbol_id (for a pinned symbol) or file_path (for a pinned file). At least one is required. Returns JSON: { ok, deleted }.

SERVERTrace SOURCEnikolai-vysotskyi/trace-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/nikolai-vysotskyi-trace-mcp/unpin.md

WHAT IT DOES

What unpin does on Trace

AI agents use unpin 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.

RISK

Why unpin is rated Medium

The tool removes a ranking pin (a metadata/preference record), which is a reversible write operation - pins can be re-added. It does not delete source code or irreversibly destroy data, so Destructive is not warranted. The blast radius is low as it only affects ranking/ordering metadata within the tool's session or index.

From the tool's definition Remove a ranking pin by target... Returns JSON: { ok, deleted }

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unpin safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Trace, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For unpin, this is the rule to start with:

unpin Rate-limited

unpin 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "unpin": {
      "limits": [
        {
          "counter": "unpin_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Trace, apply this rule, and every unpin call is checked against it from then on.

FAQ

Questions about unpin

What does the unpin tool do? +

Remove a ranking pin by target. Pass either symbol_id (for a pinned symbol) or file_path (for a pinned file). At least one is required. Returns JSON: { ok, deleted }. 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.

How do I enforce a policy on unpin? +

Register the Trace MCP server in PolicyLayer and add a rule for unpin: 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.

What risk level is unpin? +

unpin is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit unpin? +

Yes. Add a rate_limit block to the unpin 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.

How do I block unpin completely? +

Set action: deny in the PolicyLayer policy for unpin. 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.

What MCP server provides unpin? +

unpin 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.

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