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Update SDK docs (#1236)
This commit is contained in:
Jeremiah Lowin
GitHub
parent
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commit
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25 changed files with 541 additions and 358 deletions
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@ -7,7 +7,7 @@ sidebarTitle: context
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## Functions
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### `set_context` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L50" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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### `set_context` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L51" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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set_context(context: Context) -> Generator[Context, None, None]
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@ -15,7 +15,7 @@ set_context(context: Context) -> Generator[Context, None, None]
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## Classes
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### `Context` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L59" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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### `Context` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L60" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Context object providing access to MCP capabilities.
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@ -44,16 +44,26 @@ def my_tool(x: int, ctx: Context) -> str:
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request_id = ctx.request_id
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client_id = ctx.client_id
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# Manage state across the request
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ctx.set_state_value("key", "value")
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value = ctx.get_state_value("key")
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return str(x)
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```
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State Management:
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Context objects maintain a state dictionary that can be used to store and share
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data across middleware and tool calls within a request. When a new context
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is created (nested contexts), it inherits a copy of its parent's state, ensuring
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that modifications in child contexts don't affect parent contexts.
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The context parameter name can be anything as long as it's annotated with Context.
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The context is optional - tools that don't need it can omit the parameter.
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**Methods:**
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#### `request_context` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L116" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `request_context` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L133" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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request_context(self) -> RequestContext
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@ -64,7 +74,7 @@ Access to the underlying request context.
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If called outside of a request context, this will raise a ValueError.
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#### `report_progress` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L126" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `report_progress` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L143" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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report_progress(self, progress: float, total: float | None = None, message: str | None = None) -> None
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@ -77,7 +87,7 @@ Report progress for the current operation.
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- `total`: Optional total value e.g. 100
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#### `read_resource` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L153" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `read_resource` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L170" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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read_resource(self, uri: str | AnyUrl) -> list[ReadResourceContents]
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@ -92,7 +102,7 @@ Read a resource by URI.
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- The resource content as either text or bytes
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#### `log` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L165" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `log` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L182" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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log(self, message: str, level: LoggingLevel | None = None, logger_name: str | None = None) -> None
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@ -107,7 +117,7 @@ Send a log message to the client.
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- `logger_name`: Optional logger name
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#### `client_id` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L189" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `client_id` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L206" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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client_id(self) -> str | None
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@ -116,7 +126,7 @@ client_id(self) -> str | None
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Get the client ID if available.
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#### `request_id` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L198" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `request_id` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L215" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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request_id(self) -> str
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@ -125,7 +135,7 @@ request_id(self) -> str
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Get the unique ID for this request.
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#### `session_id` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L203" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `session_id` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L220" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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session_id(self) -> str | None
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@ -142,7 +152,7 @@ the same client session.
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- for stdio and in-memory transports which don't use session IDs.
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#### `session` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L234" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `session` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L251" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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session(self) -> ServerSession
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@ -151,7 +161,7 @@ session(self) -> ServerSession
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Access to the underlying session for advanced usage.
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#### `debug` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L239" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `debug` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L256" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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debug(self, message: str, logger_name: str | None = None) -> None
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@ -160,7 +170,7 @@ debug(self, message: str, logger_name: str | None = None) -> None
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Send a debug log message.
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#### `info` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L243" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `info` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L260" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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info(self, message: str, logger_name: str | None = None) -> None
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@ -169,7 +179,7 @@ info(self, message: str, logger_name: str | None = None) -> None
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Send an info log message.
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#### `warning` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L247" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `warning` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L264" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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warning(self, message: str, logger_name: str | None = None) -> None
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@ -178,7 +188,7 @@ warning(self, message: str, logger_name: str | None = None) -> None
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Send a warning log message.
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#### `error` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L251" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `error` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L268" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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error(self, message: str, logger_name: str | None = None) -> None
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@ -187,7 +197,7 @@ error(self, message: str, logger_name: str | None = None) -> None
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Send an error log message.
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#### `list_roots` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L255" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `list_roots` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L272" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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list_roots(self) -> list[Root]
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@ -196,7 +206,7 @@ list_roots(self) -> list[Root]
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List the roots available to the server, as indicated by the client.
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#### `send_tool_list_changed` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L260" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `send_tool_list_changed` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L277" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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send_tool_list_changed(self) -> None
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@ -205,7 +215,7 @@ send_tool_list_changed(self) -> None
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Send a tool list changed notification to the client.
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#### `send_resource_list_changed` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L264" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `send_resource_list_changed` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L281" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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send_resource_list_changed(self) -> None
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@ -214,7 +224,7 @@ send_resource_list_changed(self) -> None
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Send a resource list changed notification to the client.
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#### `send_prompt_list_changed` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L268" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `send_prompt_list_changed` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L285" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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send_prompt_list_changed(self) -> None
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@ -223,7 +233,7 @@ send_prompt_list_changed(self) -> None
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Send a prompt list changed notification to the client.
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#### `sample` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L272" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `sample` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L289" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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sample(self, messages: str | list[str | SamplingMessage], system_prompt: str | None = None, include_context: IncludeContext | None = None, temperature: float | None = None, max_tokens: int | None = None, model_preferences: ModelPreferences | str | list[str] | None = None) -> ContentBlock
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@ -236,25 +246,25 @@ completion from the client. The client must be appropriately configured,
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or the request will error.
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#### `elicit` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L319" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `elicit` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L336" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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elicit(self, message: str, response_type: None) -> AcceptedElicitation[dict[str, Any]] | DeclinedElicitation | CancelledElicitation
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```
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#### `elicit` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L331" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `elicit` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L348" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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elicit(self, message: str, response_type: type[T]) -> AcceptedElicitation[T] | DeclinedElicitation | CancelledElicitation
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```
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#### `elicit` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L341" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `elicit` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L358" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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elicit(self, message: str, response_type: list[str]) -> AcceptedElicitation[str] | DeclinedElicitation | CancelledElicitation
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```
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#### `elicit` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L350" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `elicit` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L367" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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elicit(self, message: str, response_type: type[T] | list[str] | None = None) -> AcceptedElicitation[T] | AcceptedElicitation[dict[str, Any]] | AcceptedElicitation[str] | DeclinedElicitation | CancelledElicitation
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object schema with a single "value" field will be generated.
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#### `get_http_request` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L443" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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#### `get_http_request` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L460" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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get_http_request(self) -> Request
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Get the active starlette request.
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#### `set_state` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L475" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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set_state(self, key: str, value: Any) -> None
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```
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Set a value in the context state.
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#### `get_state` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/context.py#L479" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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```python
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get_state(self, key: str) -> Any
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```
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Get a value from the context state. Returns None if the key is not found.
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