roam_datomic_query

Execute a custom Datomic query on the Roam graph for advanced data retrieval beyond the available search tools. This provides direct access to Roam\

SERVERRoam Research SOURCE2b3pro/roam-research-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/2b3pro-roam-research-mcp/roam-datomic-query.md

WHAT IT DOES

What roam_datomic_query does on Roam Research

AI agents invoke roam_datomic_query to trigger actions in Roam Research. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why roam_datomic_query is rated High

This tool executes arbitrary Datomic queries directly against the Roam graph database. While described as 'data retrieval,' executing custom queries with direct database access could include destructive operations (e.g., retractions in Datomic). The 'custom query' and 'direct access' nature elevates severity since an AI agent could craft queries with unintended side effects.

From the tool's definition "Execute a custom Datomic query on the Roam graph" and "provides direct access to Roam"

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs roam_datomic_query safely

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

roam_datomic_query Rate-limited

roam_datomic_query stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "roam_datomic_query": {
      "limits": [
        {
          "counter": "roam_datomic_query_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about roam_datomic_query

What does the roam_datomic_query tool do? +

Execute a custom Datomic query on the Roam graph for advanced data retrieval beyond the available search tools. This provides direct access to Roam\. It is categorised as a Execute tool in the Roam Research MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on roam_datomic_query? +

Register the Roam Research MCP server in PolicyLayer and add a rule for roam_datomic_query: 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 Roam Research. Nothing to install.

What risk level is roam_datomic_query? +

roam_datomic_query is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit roam_datomic_query? +

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

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

roam_datomic_query is provided by the Roam Research MCP server (2b3pro/roam-research-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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