// SCAN REPORT

Reltio MCP Server

45 tools. 11 can modify or destroy data without limits.

3 destructive tools with no built-in limits. Policy required.

Last updated: 29 Jun 2026

11 can modify or destroy data

34 read-only

45 tools total

Community server · catalogue entry verified 29/06/2026

How to control Reltio MCP Server ↓

TOOL MAP

What Reltio MCP Server exposes to your agents

Read (34) Write / Execute (8) Destructive / Financial (3)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

Critical Risk

The most dangerous Reltio MCP Server tools

Destructive · High delete_relation_tool The tool name contains 'delete', which maps directly to the Destructive category (irreversibly deletes data). Destructive · Critical merge_entities_tool In MDM platforms like Reltio, merging entities consolidates multiple records into one, which is generally irreversible (or very difficult to undo). Destructive · High unmerge_entity_tool In MDM platforms like Reltio, unmerging entities separates consolidated master records, which can have broad downstream impacts on data integrity and related systems. Execute · High execute_task_action_tool The tool's name contains 'execute' and 'action', indicating it triggers operations in the MDM workflow system.

11 of Reltio MCP Server's 45 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Reltio MCP Server

PolicyLayer is an MCP gateway — it sits between your AI agents and Reltio MCP Server, and nothing reaches the server without passing your rules. These are the rules we recommend:

Deny destructive operations

{
  "delete_relation_tool": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Blocked by default. Requires approval."
      }
    ]
  }
}

Destructive tools should never be available to autonomous agents without human approval.

Rate limit write operations

{
  "create_entity_tool": {
    "limits": [
      {
        "counter": "create_entity_tool_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "capabilities_tool": {
    "limits": [
      {
        "counter": "capabilities_tool_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Reltio MCP Server — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON RELTIO →

Instant setup, no code required.

FULL CATALOGUE

All 45 Reltio MCP Server tools

DESTRUCTIVE 3 tools

Destructive delete_relation_tool delete_relation_tool Destructive merge_entities_tool merge_entities_tool Destructive unmerge_entity_tool unmerge_entity_tool

EXECUTE 2 tools

Execute execute_task_action_tool execute_task_action_tool Execute start_process_instance_tool start_process_instance_tool

WRITE 6 tools

Write create_entity_tool create_entity_tool Write create_interaction_tool create_interaction_tool Write create_relationships_tool create_relationships_tool Write reassign_workflow_task_tool reassign_workflow_task_tool Write reject_entity_match_tool reject_entity_match_tool Write update_entity_attributes_tool update_entity_attributes_tool

READ 34 tools

Read capabilities_tool List all capabilities (resources, tools, and prompts) available in this server Read check_user_activity_tool check_user_activity_tool Read export_merge_tree_tool export_merge_tree_tool Read find_potential_matches_tool find_potential_matches_tool Read get_business_configuration_tool get_business_configuration_tool Read get_change_request_type_definition_tool get_change_request_type_definition_tool Read get_data_model_definition_tool get_data_model_definition_tool Read get_entity_graph_tool get_entity_graph_tool Read get_entity_interactions_tool get_entity_interactions_tool Read get_entity_match_history_tool get_entity_match_history_tool Read get_entity_parents_tool get_entity_parents_tool Read get_entity_relations_tool get_entity_relations_tool Read get_entity_tool get_entity_tool Read get_entity_type_definition_tool get_entity_type_definition_tool Read get_entity_with_matches_tool get_entity_with_matches_tool Read get_graph_type_definition_tool get_graph_type_definition_tool Read get_grouping_type_definition_tool get_grouping_type_definition_tool Read get_interaction_type_definition_tool get_interaction_type_definition_tool Read get_merge_activities_tool get_merge_activities_tool Read get_possible_assignees_tool get_possible_assignees_tool Read get_potential_matches_stats_tool get_potential_matches_stats_tool Read get_relation_details_tool get_relation_details_tool Read get_relation_type_definition_tool get_relation_type_definition_tool Read get_task_details_tool get_task_details_tool Read get_tenant_metadata_tool get_tenant_metadata_tool Read get_tenant_permissions_metadata_tool get_tenant_permissions_metadata_tool Read get_user_workflow_tasks_tool get_user_workflow_tasks_tool Read get_users_by_group_and_tenant_tool get_users_by_group_and_tenant_tool Read get_users_by_role_and_tenant_tool get_users_by_role_and_tenant_tool Read health_check_tool Check if the MCP server is healthy. Read rdm_lookups_list_tool rdm_lookups_list_tool Read relation_search_tool relation_search_tool Read retrieve_tasks_tool retrieve_tasks_tool Read search_entities_tool search_entities_tool

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about Reltio MCP Server

Can an AI agent delete data through the Reltio MCP Server MCP server? +

Yes. The Reltio MCP Server server exposes 3 destructive tools including delete_relation_tool, merge_entities_tool, unmerge_entity_tool. These permanently remove resources with no undo. PolicyLayer blocks destructive tools by default so they never reach the upstream server.

How do I prevent bulk modifications through Reltio MCP Server? +

The Reltio MCP Server server has 6 write tools including create_entity_tool, create_interaction_tool, create_relationships_tool. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Reltio MCP Server.

How many tools does the Reltio MCP Server MCP server expose? +

45 tools across 4 categories: Destructive, Execute, Read, Write. 34 are read-only. 11 can modify, create, or delete data.

How do I enforce a policy on Reltio MCP Server? +

Register the Reltio MCP Server MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Reltio MCP Server tool call.

Deterministic rules across all 45 Reltio MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON RELTIO →

Instant setup, no code required.

45 Reltio MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.