# apply_migration

Advanced migrations with validation

Agent View of the PolicyLayer registry record for `apply_migration`. HTML page: https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/apply-migration

## Facts

- Tool: `apply_migration`
- Server: Supabase MCP Server - Self-Hosted Edition (`abdqum/supabase-mcp-selfhosted`) — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted.md
- Homepage: https://github.com/abdqum/Supabase-MCP-SelfHosted
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "apply_migration",
    "arguments": {}
  }
}
```

## Why apply_migration is rated High

Applying a database migration executes schema changes (DDL statements like ALTER TABLE, CREATE TABLE, DROP TABLE, etc.) against the database. While it includes validation, migrations can be irreversible and have wide blast radius. The description is minimal but the tool name combined with the server context (database migrations) indicates execution of potentially destructive schema changes.

From the tool's own definition: "'apply_migration' with description 'Advanced migrations with validation'"

## Use case

AI agents invoke apply_migration to trigger actions in Supabase MCP Server - Self-Hosted Edition. 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Supabase MCP Server - Self-Hosted Edition:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "apply_migration": {
      "limits": [
        {
          "counter": "apply_migration_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Supabase MCP Server - Self-Hosted Edition (56)

- `delete_auth_user` — Destructive — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/delete-auth-user.md
- `delete_subscription` — Destructive — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/delete-subscription.md
- `auto_create_indexes` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/auto-create-indexes.md
- `auto_migrate` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/auto-migrate.md
- `execute_psql` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/execute-psql.md
- `execute_sql` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/execute-sql.md
- `manage_docker` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/manage-docker.md
- `manage_functions` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/manage-functions.md
- `manage_triggers` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/manage-triggers.md
- `push_migrations` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/push-migrations.md
- `realtime_management` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/realtime-management.md
- `rebuild_hooks` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/rebuild-hooks.md
- `smart_migration` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/smart-migration.md
- `sync_schema` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/sync-schema.md
- `vacuum_analyze` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/vacuum-analyze.md
- `validate_migration` — Execute — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/validate-migration.md
- `hello` — Other — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/hello.md
- `analyze_performance` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/analyze-performance.md
- `analyze_rls_coverage` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/analyze-rls-coverage.md
- `audit_security` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/audit-security.md
- `check_health` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/check-health.md
- `generate_typescript_types` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/generate-typescript-types.md
- `get_anon_key` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/get-anon-key.md
- `get_auth_user` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/get-auth-user.md
- `get_database_connections` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/get-database-connections.md
- `get_database_stats` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/get-database-stats.md
- `get_logs` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/get-logs.md
- `get_project_url` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/get-project-url.md
- `get_service_key` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/get-service-key.md
- `inspect_schema` — Read — https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted/inspect-schema.md
- …and 26 more: https://policylayer.com/tools/abdqum-supabase-mcp-selfhosted.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=abdqum-supabase-mcp-selfhosted · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/abdqum-supabase-mcp-selfhosted