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get_swarm_join_tokens

Read-only

Retrieve the current worker and manager join tokens for a Docker Swarm. These tokens are required for new nodes to join the swarm.

Instructions

Return the swarm's worker and manager join tokens.

These are the tokens a new node passes to join_swarm — without one, join_swarm cannot be called, so this closes the init -> join loop. The tokens are secret bearer credentials (anyone holding the manager token can join as a manager); treat the result as sensitive and avoid logging it. Reads swarm.attrs["JoinTokens"] after a reload, so it always reflects the current tokens.

returns: dict - {"Worker": , "Manager": }

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior5/5

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

Annotations indicate readOnlyHint=true and destructiveHint=false. The description adds that tokens are secret bearer credentials and reads from 'swarm.attrs["JoinTokens"]' after a reload, providing security and implementation details beyond annotations.

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?

Three sentences: purpose, usage context with security warning, and technical detail. Every sentence earns its place without redundancy.

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?

Despite no output schema, the description explicitly defines the return dict with 'Worker' and 'Manager' keys. It explains the source and security implications, leaving no gaps for this parameterless tool.

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 no parameters, so schema coverage is 100%. The description does not need to add parameter information, but it does describe the return value structure.

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 'Return the swarm's worker and manager join tokens.' The verb 'return' and the specific resource distinguish it from sibling tools like 'get_swarm_unlock_key' and 'rotate_swarm_join_token'.

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

Usage Guidelines4/5

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

The description explains these tokens are used with 'join_swarm' and closes the init->join loop. It does not explicitly list alternatives but provides clear context for when to use.

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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