add_petAdd a new pet to the store by providing name and photoUrls, with optional id, category, tags, and status.
Add a new pet to the store.
| Name | Required | Description | Default |
|---|---|---|---|
| id | No | ||
| name | Yes | ||
| tags | No | ||
| status | No | pet status in the store | |
| category | No | ||
| photoUrls | Yes |
Changes observed during successful MCP inspections. Dates show when Glama detected each change.
v0.6.2Input schema / $defsRemoved value: -{
- "AddPetCategory": {
- "properties": {
- "id": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "default": null,
- "title": "Id"
- },
- "name": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "default": null,
- "title": "Name"
- }
- },
- "title": "AddPetCategory",
- "type": "object"
- },
- "AddPetTagsItem": {
- "properties": {
- "id": {
- "anyOf": [
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
- ],
- "default": null,
- "title": "Id"
- },
- "name": {
- "anyOf": [
- {
- "type": "string"
- },
- {
- "type": "null"
- }
- ],
- "default": null,
- "title": "Name"
- }
- },
- "title": "AddPetTagsItem",
- "type": "object"
- }
-}Input schema / properties / category / anyOfRemoved value: -[
- {
- "$ref": "#/$defs/AddPetCategory"
- },
- {
- "type": "null"
- }
-]Input schema / properties / category / defaultRemoved value: -nullInput schema / properties / category / propertiesAdded value: +{
+ "id": {
+ "example": 1,
+ "format": "int64",
+ "type": "integer"
+ },
+ "name": {
+ "example": "Dogs",
+ "type": "string"
+ }
+}Input schema / properties / category / typeAdded value: +"object"Input schema / properties / category / xmlAdded value: +{
+ "name": "category"
+}Input schema / properties / id / anyOfRemoved value: -[
- {
- "type": "integer"
- },
- {
- "type": "null"
- }
-]Input schema / properties / id / defaultRemoved value: -nullInput schema / properties / id / exampleAdded value: +10Input schema / properties / id / formatAdded value: +"int64"Input schema / properties / id / titleRemoved value: -"Id"Input schema / properties / id / typeAdded value: +"integer"Input schema / properties / name / exampleAdded value: +"doggie"Input schema / properties / name / titleRemoved value: -"Name"Input schema / properties / photoUrls / items / xmlAdded value: +{
+ "name": "photoUrl"
+}Input schema / properties / photoUrls / titleRemoved value: -"Photourls"Input schema / properties / photoUrls / xmlAdded value: +{
+ "wrapped": true
+}Input schema / properties / status / anyOfRemoved value: -[
- {
- "enum": [
- "available",
- "pending",
- "sold"
- ],
- "type": "string"
- },
- {
- "type": "null"
- }
-]Input schema / properties / status / defaultRemoved value: -nullInput schema / properties / status / enumAdded value: +[
+ "available",
+ "pending",
+ "sold"
+]Input schema / properties / status / titleRemoved value: -"Status"Input schema / properties / status / typeAdded value: +"string"Input schema / properties / tags / anyOfRemoved value: -[
- {
- "items": {
- "$ref": "#/$defs/AddPetTagsItem"
- },
- "type": "array"
- },
- {
- "type": "null"
- }
-]Input schema / properties / tags / defaultRemoved value: -nullInput schema / properties / tags / itemsAdded value: +{
+ "properties": {
+ "id": {
+ "format": "int64",
+ "type": "integer"
+ },
+ "name": {
+ "type": "string"
+ }
+ },
+ "type": "object",
+ "xml": {
+ "name": "tag"
+ }
+}Input schema / properties / tags / titleRemoved value: -"Tags"Input schema / properties / tags / typeAdded value: +"array"Input schema / properties / tags / xmlAdded value: +{
+ "wrapped": true
+}Input schema / titleRemoved value: -"upstream_callableArguments"v0.5.1Input schema / $defsAdded value: +{
+ "AddPetCategory": {
+ "properties": {
+ "id": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "default": null,
+ "title": "Id"
+ },
+ "name": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "default": null,
+ "title": "Name"
+ }
+ },
+ "title": "AddPetCategory",
+ "type": "object"
+ },
+ "AddPetTagsItem": {
+ "properties": {
+ "id": {
+ "anyOf": [
+ {
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "default": null,
+ "title": "Id"
+ },
+ "name": {
+ "anyOf": [
+ {
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ],
+ "default": null,
+ "title": "Name"
+ }
+ },
+ "title": "AddPetTagsItem",
+ "type": "object"
+ }
+}Input schema / properties / category / anyOfPrevious value: -[
- {
- "additionalProperties": true,
- "type": "object"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "$ref": "#/$defs/AddPetCategory"
+ },
+ {
+ "type": "null"
+ }
+]Input schema / properties / category / titleRemoved value: -"Category"Input schema / properties / status / anyOfPrevious value: -[
- {
- "type": "string"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "enum": [
+ "available",
+ "pending",
+ "sold"
+ ],
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+]Input schema / properties / tags / anyOfPrevious value: -[
- {
- "items": {
- "additionalProperties": true,
- "type": "object"
- },
- "type": "array"
- },
- {
- "type": "null"
- }
-]New value: +[
+ {
+ "items": {
+ "$ref": "#/$defs/AddPetTagsItem"
+ },
+ "type": "array"
+ },
+ {
+ "type": "null"
+ }
+]v1.0.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description reveals no behavioral traits beyond the obvious write operation. Annotations only include openWorldHint, with no readOnlyHint or destructiveHint, so the description carries the full burden for disclosure. It does not mention permissions, side effects, or response behavior.
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 a single sentence but it merely repeats the title without adding value. It is under-specified rather than concise, lacking substantive content that would help an agent.
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?
With 6 parameters, nested objects, no output schema, and a sparse description, the tool is severely under-documented. The description completely fails to provide context about return values, error cases, or operational details.
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 only 17%, and the description adds no parameter meaning. It fails to clarify required fields, optional fields, or how values like status or photoUrls should be provided.
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?
Tautological: description restates name/title.
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 given on when to use this tool versus alternatives. There is no mention of scenarios, prerequisites, or distinctions from similar pet-related operations.
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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