MCP Tool Reference Low Risk

apply_migration

Applies a SQL migration to the database

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

supabase-community/supabase-mcp Other

WHEN AI AGENTS USE THIS TOOL

AI agents call apply_migration to perform operations in Supabase. While the risk category is not fully classified, applying a rate limit gives you visibility into how often the tool is called and prevents unexpected bursts of activity from autonomous agents.

WHY ENFORCE A POLICY ON APPLY_MIGRATION

Applying a policy to apply_migration gives you an audit trail of every call an AI agent makes. Even for low-risk tools, visibility into agent behaviour helps you debug issues, optimise workflows, and maintain compliance with your organisation's security requirements.

RECOMMENDED POLICY

Apply a rate limit to control usage and monitor for unexpected behaviour.

supabase.yaml 
tools:
  apply_migration:
    rules:
      - action: allow
        rate_limit:
          max: 60
          window: 60

See the full Supabase policy for all 32 tools.

DETAILS

Tool Name

apply_migration

Category

Other

MCP Server

Supabase MCP Server

Risk Level

Low

MORE SUPABASE TOOLS

confirm_cost Other
Confirms the user's understanding of costs
deploy_edge_function Other
Deploys a new Edge Function to a project
generate_typescript_types Other
Generates TypeScript types from the database schema
merge_branch Other
Merges migrations from dev branch to production
pause_project Other
Pauses a project
rebase_branch Other
Rebases development branch on production
reset_branch Other
Resets migrations of a development branch
restore_project Other
Restores a project

View all 32 tools →

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usage Algolia
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RELATED READING

FREQUENTLY ASKED QUESTIONS

What does the apply_migration tool do?

Applies a SQL migration to the database. It is categorised as a Other tool in the Supabase MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on apply_migration?

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

What risk level is apply_migration?

apply_migration is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit apply_migration?

Yes. Add a rate_limit block to the apply_migration 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 apply_migration completely?

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

apply_migration is provided by the Supabase MCP server (supabase-community/supabase-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

ENFORCE POLICIES ON SUPABASE

Open source. One binary. Zero dependencies.

VIEW ON GITHUB Full Supabase policy →