list_storage_buckets
Lists all storage buckets in a project
Part of the Supabase MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
WHEN AI AGENTS USE THIS TOOL
AI agents call list_storage_buckets to retrieve information from Supabase without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions — but you may still want rate limits to control API costs.
WHY ENFORCE A POLICY ON LIST_STORAGE_BUCKETS
Even though list_storage_buckets only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
RECOMMENDED POLICY
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
tools:
list_storage_buckets:
rules:
- action: allowSee the full Supabase policy for all 32 tools.
DETAILS
MORE SUPABASE TOOLS
get_advisors Read get_cost Read get_edge_function Read get_logs Read get_organization Read get_project Read get_project_url Read get_publishable_keys Read SIMILAR READ TOOLS ON OTHER SERVERS
list_bases Airtable list_tables Airtable list_records Airtable get_record Airtable search_records Airtable search Amplitude RELATED READING
FREQUENTLY ASKED QUESTIONS
What does the list_storage_buckets tool do?
Lists all storage buckets in a project. It is categorised as a Read tool in the Supabase MCP Server, which means it retrieves data without modifying state.
How do I enforce a policy on list_storage_buckets?
Add a rule in your Intercept YAML policy under the tools section for list_storage_buckets. 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 list_storage_buckets?
list_storage_buckets is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Can I rate-limit list_storage_buckets?
Yes. Add a rate_limit block to the list_storage_buckets 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 list_storage_buckets completely?
Set action: deny in the Intercept policy for list_storage_buckets. 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 list_storage_buckets?
list_storage_buckets 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.