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fadlee

PocketBase MCP Server

by fadlee

list_collections

Retrieve all collections from a PocketBase database with customizable sorting options to organize and manage your data structure.

Instructions

List all collections with optional sorting

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sortNoSort order for collections (e.g., '-created', 'name')-created

Implementation Reference

  • The handler function that creates and returns the ToolHandler for listing collections. It uses PocketBase's collections.getFullList() with optional sorting.
    export function createListCollectionsHandler(pb: PocketBase): ToolHandler {
      return async (args: { sort?: string }) => {
        try {
          const result = await pb.collections.getFullList({
            sort: args.sort || "-created"
          });
          return createJsonResponse(result);
        } catch (error: unknown) {
          throw handlePocketBaseError("list collections", error);
        }
      };
    }
  • Zod-like input schema definition for the list_collections tool, defining an optional 'sort' property.
    export const listCollectionsSchema = {
      type: "object",
      properties: {
        sort: {
          type: "string",
          description: "Sort order for collections (e.g., '-created', 'name')",
          default: "-created",
        },
      },
      required: [],
    };
  • src/server.ts:111-116 (registration)
    The tool registration object in the MCP server array, linking the name, description, schema, and handler for list_collections.
    {
      name: "list_collections",
      description: "List all collections with optional sorting",
      inputSchema: listCollectionsSchema,
      handler: createListCollectionsHandler(pb),
    },
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden but lacks behavioral details. It doesn't disclose whether this is a read-only operation, if it requires authentication, how results are paginated, or what the output format is, leaving critical gaps for agent understanding.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise with a single, clear sentence that front-loads the core purpose ('List all collections') and efficiently notes the optional feature ('with optional sorting'). Every word earns its place without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with no annotations, no output schema, and multiple sibling tools, the description is incomplete. It fails to address key contextual aspects like authentication needs, result format, pagination, or differentiation from similar tools, making it inadequate for full agent comprehension.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description mentions 'optional sorting', which aligns with the single parameter 'sort' in the schema. Since schema description coverage is 100%, the baseline is 3, and the description adds minimal value beyond what the schema already documents.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('List') and resource ('collections'), making the tool's purpose immediately understandable. However, it doesn't differentiate itself from potential sibling tools like 'query_collection' or 'list_records' that might also list data, missing the highest clarity tier.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives like 'query_collection' or 'list_records', nor does it mention prerequisites or exclusions. It only hints at optional sorting, which is insufficient for usage decisions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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