Check if JWT secret is configured for self-hosted Supabase instances and preview the configuration to ensure authentication security.
Checks if the Supabase JWT secret is configured for this server and returns a preview.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Changes observed during successful MCP inspections.
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries the burden. It states the tool 'Checks' and 'returns a preview', implying a read-only operation with no side effects. However, it does not disclose what happens if the JWT secret is missing or what 'preview' entails exactly.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence conveying the exact purpose with no filler. Efficient and front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Tool has no parameters, no output schema, and low complexity. Description succinctly covers what it does and what it returns, making it complete for an agent to decide and invoke.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Zero parameters, so schema coverage is 100%. Description adds no parameter-specific info, which is acceptable given there are none. Baseline for 0 params is 4.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description uses specific verb 'Checks' and resource 'Supabase JWT secret', clearly stating the tool's action: verification and preview. It distinguishes itself from sibling tools which perform mutations, listings, or connections.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance on when to use this tool vs alternatives. While the purpose implies uses before configuring other operations, the description does not explicitly state context, prerequisites, or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.