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Add meta parameter support to tools, resources, templates, and prompts decorators (#1294)

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Jeremiah Lowin 2025-07-29 14:16:05 -07:00 • committed by GitHub
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13 changed files with 192 additions and 2 deletions
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9
docs/servers/prompts.mdx
View file

@ -65,7 +65,8 @@ While FastMCP infers the name and description from your function, you can overri
@mcp.prompt(
name="analyze_data_request", # Custom prompt name
description="Creates a request to analyze data with specific parameters", # Custom description
tags={"analysis", "data"} # Optional categorization tags
tags={"analysis", "data"}, # Optional categorization tags
meta={"version": "1.1", "author": "data-team"} # Custom metadata
)
def data_analysis_prompt(
data_uri: str = Field(description="The URI of the resource containing the data."),
@ -91,6 +92,12 @@ def data_analysis_prompt(
<ParamField body="enabled" type="bool" default="True">
A boolean to enable or disable the prompt. See [Disabling Prompts](#disabling-prompts) for more information
</ParamField>
<ParamField body="meta" type="dict[str, Any] | None">
<VersionBadge version="2.11.0" />
Optional meta information about the prompt. This data is passed through to the MCP client as the `_meta` field of the client-side prompt object and can be used for custom metadata, versioning, or other application-specific purposes.
</ParamField>
</Card>
### Argument Types

9
docs/servers/resources.mdx
View file

@ -73,7 +73,8 @@ mcp = FastMCP(name="DataServer")
name="ApplicationStatus", # Custom name
description="Provides the current status of the application.", # Custom description
mime_type="application/json", # Explicit MIME type
tags={"monitoring", "status"} # Categorization tags
tags={"monitoring", "status"}, # Categorization tags
meta={"version": "2.1", "team": "infrastructure"} # Custom metadata
)
def get_application_status() -> dict:
"""Internal function description (ignored if description is provided above)."""
@ -116,6 +117,12 @@ def get_application_status() -> dict:
</ParamField>
</Expandable>
</ParamField>
<ParamField body="meta" type="dict[str, Any] | None">
<VersionBadge version="2.11.0" />
Optional meta information about the resource. This data is passed through to the MCP client as the `_meta` field of the client-side resource object and can be used for custom metadata, versioning, or other application-specific purposes.
</ParamField>
</Card>
### Return Values

7
docs/servers/tools.mdx
View file

@ -58,6 +58,7 @@ While FastMCP infers the name and description from your function, you can overri
name="find_products", # Custom tool name for the LLM
description="Search the product catalog with optional category filtering.", # Custom description
tags={"catalog", "search"}, # Optional tags for organization/filtering
meta={"version": "1.2", "author": "product-team"} # Custom metadata
)
def search_products_implementation(query: str, category: str | None = None) -> list[dict]:
"""Internal function description (ignored if description is provided above)."""
@ -107,6 +108,12 @@ def search_products_implementation(query: str, category: str | None = None) -> l
</ParamField>
</Expandable>
</ParamField>
<ParamField body="meta" type="dict[str, Any] | None">
<VersionBadge version="2.11.0" />
Optional meta information about the tool. This data is passed through to the MCP client as the `_meta` field of the client-side tool object and can be used for custom metadata, versioning, or other application-specific purposes.
</ParamField>
</Card>