Create or update an alias for an Elasticsearch/OpenSearch index to simplify index management and reference multiple indices with a single name.
Create or update an alias for a specific index.
Args:
index: Name of the index
name: Name of the alias
body: Alias configuration
| Name | Required | Description | Default |
|---|---|---|---|
| index | Yes | ||
| name | Yes | ||
| body | Yes |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but only states the basic action. It doesn't disclose behavioral traits such as whether this is a mutation (implied by 'Create or update'), what permissions are needed, if it's idempotent, error conditions, or side effects. This is inadequate for a tool that likely modifies system state.
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?
The description is brief and front-loaded with the main purpose, followed by parameter listings. It avoids unnecessary words, though the parameter section could be more integrated. Overall, it's efficient but could be slightly more structured.
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?
Given the complexity (3 parameters, nested object, no output schema, no annotations), the description is incomplete. It lacks details on behavior, parameter usage, error handling, and output, making it insufficient for safe and effective tool invocation in this context.
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?
Schema description coverage is 0%, so the description must compensate. It lists the three parameters with brief labels ('Name of the index', etc.), adding minimal semantic context beyond the schema's property names. This provides some value but doesn't explain format, constraints, or what 'body' contains, leaving significant gaps.
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?
The description clearly states the action ('Create or update') and resource ('alias for a specific index'), making the purpose understandable. However, it doesn't differentiate from siblings like 'create_index' or 'get_alias', which would require more specific context about when to use this versus those alternatives.
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 is provided on when to use this tool versus alternatives like 'create_index' or 'list_aliases'. The description only states what it does, not when it's appropriate, leaving the agent to infer usage from the name and context alone.
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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