pin · Trace MCP: Risk & Policy

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/pin.md

WHAT IT DOES

What pin does on Trace

AI agents use pin 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 pin is rated Medium

Reversibly modifies ranking weights without altering source code or causing irreversible damage.

From the tool's definition Boost or demote symbol in PageRank ranking by setting multiplicative weight

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pin 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 pin, this is the rule to start with:

pin Rate-limited

pin 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": {
    "pin": {
      "limits": [
        {
          "counter": "pin_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 pin call is checked against it from then on.

FAQ

Questions about pin

What does the pin tool do? +

Boost (or demote) a symbol and/or file in PageRank-driven ranking by setting a multiplicative weight. Unifies pin_symbol/pin_file — pass symbol_id and/or file_path (at least one required; pass both to pin them together with the same weight). Capped at 50 active pins per project. Returns JSON: { ok, pins, errors? }. 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 pin? +

Register the Trace MCP server in PolicyLayer and add a rule for pin: 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 pin? +

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

Can I rate-limit pin? +

Yes. Add a rate_limit block to the pin 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 pin completely? +

Set action: deny in the PolicyLayer policy for pin. 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 pin? +

pin 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.

KEEP EXPLORING

More on Trace, and thousands of servers like it.

This server

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Across the catalogue

The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →