MCP Tool Reference Medium Risk

create_key_value

Create a new Key Value instance

Part of the Render MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

render-oss/render-mcp-server Write

WHEN AI AGENTS USE THIS TOOL

AI agents use create_key_value to create or modify resources in Render. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

WHY ENFORCE A POLICY ON CREATE_KEY_VALUE

Without a policy, an AI agent could call create_key_value repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Render.

RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

render.yaml 
tools:
  create_key_value:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Render policy for all 23 tools.

DETAILS

Tool Name

create_key_value

Category

Write

MCP Server

Render MCP Server

Risk Level

Medium

MORE RENDER TOOLS

select_workspace Write
Select a workspace to use
create_web_service Write
Create a new web service
create_static_site Write
Create a new static site
create_cron_job Write
Create a new cron job
update_environment_variables Write
Update all environment variables for a service
create_postgres Write
Create a new PostgreSQL database
list_workspaces Read
List workspaces you have access to
get_selected_workspace Read
Get the currently selected workspace

View all 23 tools →

SIMILAR WRITE TOOLS ON OTHER SERVERS

create_table Airtable
Create a new table with fields
update_table Airtable
Update a table's name or description
create_field Airtable
Add a new field to a table
update_field Airtable
Modify an existing field
create_record Airtable
Add a new record
update_record Airtable
Modify an existing record

RELATED READING

FREQUENTLY ASKED QUESTIONS

What does the create_key_value tool do?

Create a new Key Value instance. It is categorised as a Write tool in the Render MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_key_value?

Add a rule in your Intercept YAML policy under the tools section for create_key_value. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Render MCP server.

What risk level is create_key_value?

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

Can I rate-limit create_key_value?

Yes. Add a rate_limit block to the create_key_value rule in your Intercept 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 create_key_value completely?

Set action: deny in the Intercept policy for create_key_value. 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 create_key_value?

create_key_value is provided by the Render MCP server (render-oss/render-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

ENFORCE POLICIES ON RENDER

Open source. One binary. Zero dependencies.

VIEW ON GITHUB Full Render policy →