index_sessions

Index conversation content from Claude Code / Claw Code sessions for cross-session search. Stores chunked messages in FTS5 — enables

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/index-sessions.md

WHAT IT DOES

What index_sessions does on Trace

AI agents use index_sessions 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 index_sessions is rated Medium

The tool writes/stores data (conversation content chunked into messages) into an FTS5 full-text search index, enabling cross-session search. This is a Write operation — it creates and persists new indexed data — but does not execute code, delete data, or move money. Misuse could expose sensitive session content or pollute the search index, warranting medium severity.

From the tool's definition Index conversation content from Claude Code / Claw Code sessions for cross-session search. Stores chunked messages in FTS5

Attacks that exploit this kind of access

RECOMMENDED RULE

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

index_sessions Rate-limited

index_sessions 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": {
    "index_sessions": {
      "limits": [
        {
          "counter": "index_sessions_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 index_sessions call is checked against it from then on.

FAQ

Questions about index_sessions

What does the index_sessions tool do? +

Index conversation content from Claude Code / Claw Code sessions for cross-session search. Stores chunked messages in FTS5 — enables. 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 index_sessions? +

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

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

Can I rate-limit index_sessions? +

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

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

index_sessions 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

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