Atlarium Habitat Database MCP

Search fertilizers

search_fertilizers

Read-onlyIdempotent

Search public aquarium fertilizer products and nutrient profiles.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "search_fertilizers"
  }
}

Input Schema

Name	Required	Description
`brand`	No	Product brand filter.
`limit`	No	Maximum number of public records to return, up to 50.
`query`	No	Search text used to match public Atlarium records.
`offset`	No	Zero-based pagination offset for public search results.
`category`	No	Product category filter.
`language`	No	Optional preferred response language: it, en or es.
`use_case`	No	Use-case filter such as filtration, lighting or fertilization.

Output Schema

Name	Required	Description	Default
`data`	Yes
`tool`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedJul 2, 2026

removedOutput schema / properties / generated_at
```
Removed value: -{
-  "type": "string"
-}
```

changedOutput schema / required

Previous value: -[
-  "data",
-  "generated_at",
-  "tool"
-]New value: +[
+  "data",
+  "tool"
+]

Changed7 schema fields changedJun 20, 2026

addedInput schema / properties / brand / description
```
Added value: +"Product brand filter."
```
addedInput schema / properties / category / description
```
Added value: +"Product category filter."
```

addedInput schema / properties / language / description

Added value: +"Optional preferred response language: it, en or es."

addedInput schema / properties / limit / description

Added value: +"Maximum number of public records to return, up to 50."

addedInput schema / properties / offset / description

Added value: +"Zero-based pagination offset for public search results."

addedInput schema / properties / query / description

Added value: +"Search text used to match public Atlarium records."

addedInput schema / properties / use_case / description

Added value: +"Use-case filter such as filtration, lighting or fertilization."

AddedJun 20, 2026

TDQS

A3.8/5.0

Behavior3/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the agent knows this is a safe, read-only operation. The description adds the 'public' scope constraint, which is useful context. However, it does not disclose other behavioral details like pagination defaults or language fallback, so it provides some but not rich context 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?

The description is a single sentence with no filler, front-loaded with the action verb 'Search'. It efficiently conveys the tool's purpose without redundancy, earning a top score for conciseness and structure.

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

Completeness4/5

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

For a search tool with 7 optional parameters, an output schema, and strong annotations, the description is fairly complete. It clearly defines the search scope ('public aquarium fertilizer products and nutrient profiles') and the schema handles parameter details. It could optionally mention pagination or language options, but those are already documented in the schema, so the description is adequate without them.

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 each of the 7 parameters having a clear description, so the baseline is 3. The description does not add parameter-level details, but the phrase 'nutrient profiles' suggests the query field matches product and nutrient information, which aligns with the schema. No additional semantics needed beyond the thorough schema.

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 uses a specific verb ('Search') and resource ('public aquarium fertilizer products and nutrient profiles'), clearly distinguishing it from sibling tools like search_products and search_fertilization_regimes. The inclusion of 'public' and 'nutrient profiles' further narrows the scope, making the tool's purpose immediately clear.

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 vs alternatives, nor does it mention exclusions. However, the focus on 'public aquarium fertilizer products and nutrient profiles' implies a specific use case, and the 'public' qualifier hints at a distinction from private/paid products. Still, with many sibling search tools, explicit guidance would be more helpful.

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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