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mcp-confluent

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by confluentinc

delete-tag

Remove a tag definition from Confluent Cloud's Schema Registry by specifying the tag name using this MCP server tool.

Instructions

Delete a tag definition from Confluent Cloud.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
baseUrlNoThe base URL of the Schema Registry REST API.
tagNameYesName of the tag to delete

Implementation Reference

  • The handle method implements the core logic to delete a tag definition from Confluent Cloud Schema Registry using the REST API DELETE request.
    async handle(
      clientManager: ClientManager,
      toolArguments: Record<string, unknown>,
    ): Promise<CallToolResult> {
      const { tagName, baseUrl } = deleteTagArguments.parse(toolArguments);
    
      if (baseUrl !== undefined && baseUrl !== "") {
        clientManager.setConfluentCloudSchemaRegistryEndpoint(baseUrl);
      }
    
      const pathBasedClient = wrapAsPathBasedClient(
        clientManager.getConfluentCloudSchemaRegistryRestClient(),
      );
    
      const { response, error } = await pathBasedClient[
        "/catalog/v1/types/tagdefs/{tagName}"
      ].DELETE({
        params: {
          path: {
            tagName: tagName,
          },
        },
      });
    
      if (error) {
        return this.createResponse(
          `Failed to delete tag: ${JSON.stringify(error)}`,
          true,
        );
      }
      return this.createResponse(
        `Successfully deleted tag: ${tagName}. Status: ${response?.status}`,
      );
    }
  • Zod input schema for the delete-tag tool defining parameters: optional baseUrl (Schema Registry endpoint) and required tagName.
    const deleteTagArguments = z.object({
      baseUrl: z
        .string()
        .describe("The base URL of the Schema Registry REST API.")
        .url()
        .default(() => env.SCHEMA_REGISTRY_ENDPOINT ?? "")
        .optional(),
      tagName: z.string().describe("Name of the tag to delete").nonempty(),
    });
  • Registers the DeleteTagHandler in the ToolFactory's static handlers Map using the ToolName.DELETE_TAG key.
    [ToolName.DELETE_TAG, new DeleteTagHandler()],
  • Defines the tool name constant 'delete-tag' in the ToolName enum, used for registration and identification.
    DELETE_TAG = "delete-tag",
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool deletes a tag definition, implying a destructive, irreversible mutation, but doesn't elaborate on permissions required, side effects (e.g., if tag removal from entities occurs automatically), or error conditions. This leaves significant gaps for a mutation tool.

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 a single, efficient sentence that directly states the tool's purpose without unnecessary words. It's front-loaded with the core action and resource, making it easy to parse quickly.

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 destructive mutation tool with no annotations and no output schema, the description is incomplete. It lacks critical context such as what 'delete' entails (e.g., permanent removal, cascading effects), expected return values, or error handling, leaving the agent with insufficient information for reliable use.

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?

Schema description coverage is 100%, with both parameters ('baseUrl' and 'tagName') clearly documented in the schema. The description adds no additional parameter semantics beyond what's in the schema, such as format examples or constraints, so it meets the baseline for high schema coverage without compensating value.

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 ('Delete') and resource ('a tag definition from Confluent Cloud'), making the purpose immediately understandable. However, it doesn't differentiate from sibling tools like 'remove-tag-from-entity' or 'delete-topics', which would require explicit comparison to achieve a perfect score.

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 'remove-tag-from-entity' (which removes a tag from an entity rather than deleting the tag definition itself) or 'delete-topics' (which deletes different resources). There's also no mention of prerequisites, such as whether the tag must be unused or if deletion is irreversible.

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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