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Get split DNS

tailscale_get_split_dns
Read-only

Get the tailnet's split-DNS configuration — a map of domain → nameservers. Tailscale REST: GET /tailnet/{tailnet}/dns/split-dns.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. First observed

TDQS

A4.3/5.0
Behavior4/5

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

With readOnlyHint=true already indicating a safe read, the description adds the result format (map of domain to nameservers) and the REST endpoint, providing useful behavioral context. No additional side effects or auth requirements are relevant for this trivial getter.

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, well-structured sentence that front-loads the action and resource, then provides the return format and API reference. No wasted words.

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

Completeness5/5

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

The tool is a simple parameterless GET operation with no output schema. The description covers the return format and the API endpoint, making it complete for an agent to understand the tool's behavior.

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

Parameters4/5

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

The input schema has zero parameters, so the baseline is 4. The description appropriately omits parameter details, and no additional parameter semantics are needed.

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

Purpose5/5

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

The description clearly states the tool retrieves the tailnet's split-DNS configuration and specifies the output format as a map of domain to nameservers. The verb 'Get' and the resource 'split-DNS configuration' distinguish it from sibling DNS tools like get_dns_preferences and list_dns_nameservers.

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

Usage Guidelines3/5

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

The description does not explicitly state when to use this tool versus alternatives, but the resource-specific wording 'split-DNS configuration' implies its use for per-domain DNS settings. It lacks explicit exclusions or alternative tool references.

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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TDQS

A3.9/5.0
Disambiguation5/5

Each tool targets a distinct resource and action. For example, list/get/delete keys are clearly separated by operation, and DNS-related tools each address a different aspect (preferences, nameservers, searchpaths, split-dns). No two tools overlap in purpose.

Naming Consistency5/5

All tools follow the `tailscale_<verb>_<noun>` pattern with consistent vocabulary (list, get, create, delete, set, expire, authorize). The style is uniformly snake_case, making the set predictable.

Tool Count4/5

22 tools is on the higher end but still within a manageable scope for a comprehensive Tailscale API wrapper. Each tool covers a distinct endpoint, and no obvious duplication exists, though the number edges toward heavy.

Completeness3/5

The server provides strong coverage for devices and auth keys (CRUD plus actions), but DNS preferences, nameservers, search paths, split-DNS, policy file, tailnet settings, and webhooks are read-only. Missing update operations for these tailnet configuration resources are notable gaps for a management tool.