a2a library

Classes

A2AAgent: Agent class
A2AAgentCapabilities: Defines optional capabilities supported by an agent.
A2AAgentCard: An AgentCard conveys key information:
A2AAgentCardSignature: AgentCardSignature represents a JWS signature of an AgentCard. This follows the JSON format of an RFC 7515 JSON Web Signature (JWS).
A2AAgentExecutor
A2AAgentExtension: A declaration of an extension supported by an Agent.
A2AAgentInterface: Declares a combination of a target URL and a transport protocol for interacting with the agent. This allows agents to expose the same functionality over multiple transport mechanisms.
A2AAgentProvider: The service provider of the agent
A2AAgentSkill: Represents a unit of capability that an agent can perform.
A2AAPIKeySecurityScheme: API Key security scheme.
A2AArtifact: Represents a file, data structure, or other resource generated by an agent during a task.
A2AAuthenticatedExtendedCardNotConfiguredError: JSON-RPC error indicating no authenticated agen card has been configured.
A2AAuthenticationHandler: Generic interface for handling authentication for HTTP requests.
A2AAuthorizationCodeOAuthFlow: Configuration for the OAuth Authorization Code flow. Previously called accessCode in OpenAPI 2.0.
A2ACancelTaskRequest: JSON-RPC request model for the 'tasks/cancel' method.
A2ACancelTaskResponse: JSON-RPC response for the 'tasks/cancel' method.
A2ACancelTaskSuccessResponse: JSON-RPC success response model for the 'tasks/cancel' method.
A2AClient: A2AClient is a HTTP client for interacting with A2A-compliant agents.
A2AClientCredentialsOAuthFlow: Configuration for the OAuth Client Credentials flow. Previously called application in OpenAPI 2.0
A2AConstants: Shared constants for the A2A library
A2AContentTypeNotSupportedError: JSON-RPC error indicating invalid JSON was received by the server.
A2ADataPart: Represents a structured data segment (e.g., JSON) within a message or artifact.
A2ADecodedParts: Holds parts as decoded by [
A2ADefaultExecutionEventBus
A2ADefaultExecutionEventBusManager
A2ADefaultRequestHandler
A2ADeleteTaskPushNotificationConfigParams: The parameters identifying the push notification configuration to delete.
A2ADeleteTaskPushNotificationConfigRequest: Represents a JSON-RPC request for the tasks/pushNotificationConfig/delete method.
A2ADeleteTaskPushNotificationConfigResponse: JSON-RPC response for the 'tasks/pushNotificationConfig/delete' method.
A2ADeleteTaskPushNotificationConfigSuccessResponse: JSON-RPC success response model for the 'tasks/pushNotificationConfig/set' method.
A2AError: A2A supported error types
A2AExecutionEventBus
A2AExecutionEventBusManager
A2AExecutionEventQueue: An async queue that subscribes to an ExecutionEventBus for events and provides an async generator to consume them.
A2AExecutorConstructor: Simplifies the construction of executors
A2AExpressApp
A2AFilePart: Represents a file segment within a message or artifact. The file content can be provided either directly as bytes or as a URI.
A2AFilePartVariant: File type variants
A2AFileWithBytes: Represents a file with its content provided directly as a base64-encoded string
A2AFileWithUri: Represents a file with its content located at a specific URI.
A2AGetTaskPushNotificationConfigParams: Defines parameters for fetching a specific push notification configuration for a task.
A2AGetTaskPushNotificationConfigRequest: JSON-RPC request model for the 'tasks/pushNotificationConfig/get' method.
A2AGetTaskPushNotificationConfigResponse: JSON-RPC response for the 'tasks/pushNotificationConfig/get' method.
A2AGetTaskPushNotificationConfigSuccessResponse: JSON-RPC success response model for the 'tasks/pushNotificationConfig/get' method.
A2AGetTaskRequest: JSON-RPC request model for the 'tasks/get' method.
A2AGetTaskResponse: JSON-RPC response for the 'tasks/get' method.
A2AGetTaskSuccessResponse: JSON-RPC success response for the 'tasks/get' method.
A2AHTTPAuthSecurityScheme: HTTP Authentication security scheme.
A2AImplicitOAuthFlow: Configuration for the OAuth Implicit flow
A2AInMemoryTaskStore: In memory task store
A2AInternalError: JSON-RPC error indicating invalid JSON was received by the server.
A2AInvalidAgentResponseError: JSON-RPC error indicating invalid JSON was received by the server.
A2AInvalidParamsError: JSON-RPC error indicating invalid JSON was received by the server.
A2AInvalidRequestError: JSON-RPC error indicating invalid JSON was received by the server.
A2AJSONParseError: JSON-RPC error indicating invalid JSON was received by the server.
A2AJSONRPCError: Represents a JSON-RPC 2.0 Error object.
A2AJSONRPCErrorResponse: JSON-RPC response for the 'tasks/cancel' method.
A2AJSONRPCErrorResponseDTPR: /// JSON RPC error response object
A2AJSONRPCErrorResponseGTPR: Represents a JSON-RPC 2.0 Error Response object.
A2AJSONRPCErrorResponseLTPR: Represents a JSON-RPC 2.0 Error Response object.
A2AJSONRPCErrorResponsePNCR: RPC error PN configuration
A2AJSONRPCErrorResponseS: RPC error send
A2AJSONRPCErrorResponseSS: RPC error send stream
A2AJSONRPCErrorResponseSSM: JSON RPC error response object
A2AJSONRPCErrorResponseSTPR: /// JSON RPC error response object
A2AJSONRPCErrorResponseT: Represents a JSON-RPC 2.0 Error Response object.
A2AJsonRpcRequest: Represents a JSON-RPC 2.0 Request object.
A2AJsonRpcResponse: Represents a JSON-RPC 2.0 Response object.
A2AJsonRpcTransportHandler: Handles JSON-RPC transport layer, routing requests to an A2ARequestHandler.
A2AListTaskPushNotificationConfigParams: The parameters identifying the task whose configurations are to be listed.
A2AListTaskPushNotificationConfigRequest: Represents a JSON-RPC request for the tasks/pushNotificationConfig/list method.
A2AListTaskPushNotificationConfigResponse: JSON-RPC response for the 'tasks/pushNotificationConfig/list' method.
A2AListTaskPushNotificationConfigSuccessResponse: JSON-RPC success response model for the 'tasks/pushNotificationConfig/list' method.
A2AMCPBridge: The A2A MCP Bridge.
A2AMCPServer: Provides an MCP server with a set of predefined tools for use by the A2AMCPBridge class.
A2AMessage: Represents a single message in the conversation between a user and an agent
A2AMessageSendConfiguration: Defines configuration options for a message/send or message/stream request.
A2AMessageSendParams: Defines the parameters for a request to send a message to an agent. This can be used to create a new task, continue an existing one, or restart a task.
A2AMethodNotFoundError: JSON-RPC error indicating invalid JSON was received by the server.
A2AOAuth2SecurityScheme: OAuth2.0 security scheme configuration.
A2AOAuthFlows: An object containing configuration information for the flow types supported.
A2AOpenIdConnectSecurityScheme: OpenID Connect security scheme configuration.
A2APart: A discriminated union representing a part of a message or artifact, which can be text, a file, or structured data.
A2APasswordOAuthFlow: Configuration for the OAuth Resource Owner Password flow
A2APushNotificationAuthenticationInfo: Defines authentication details for a push notification endpoint.
A2APushNotificationConfig: Defines the configuration for setting up push notifications for task updates.
A2APushNotificationNotSupportedError: JSON-RPC error indicating invalid JSON was received by the server.
A2ARequest: A2A supported request types
A2ARequestContext
A2ARequestHandler
A2AResultManager
A2AResultResolver: Use to pass success or fail values back to the caller of a function. Only one value should be set.
A2ASecurityScheme: Defines a security scheme that can be used to secure an agent's endpoints. This is a discriminated union type based on the OpenAPI 3.0 Security Scheme Object.
A2ASendMessageRequest: JSON-RPC request model for the 'message/send' method.
A2ASendMessageResponse: JSON-RPC response model for the 'message/send' method.
A2ASendMessageSuccessResponse: JSON-RPC success response model for the 'message/send' method.
A2ASendStreamingMessageRequest: JSON-RPC request model for the 'message/stream' method.
A2ASendStreamingMessageResponse: JSON-RPC response model for the 'message/stream' method.
A2ASendStreamingMessageSuccessResponse: JSON-RPC success response model for the 'message/stream' method.
A2ASendStreamMessageResponse: JSON-RPC response model for the 'message/send' method.
A2ASendStreamMessageSuccessResponse: JSON-RPC success response model for the 'message/stream' method. This response is also used to carry streaming responses from the server(SSE) in its result parameter.
A2AServerDebug: A2A Server debug support class
A2AServerError: Custom error class for A2A server operations, incorporating JSON-RPC error codes.
A2ASetTaskPushNotificationConfigRequest: JSON-RPC request model for the 'tasks/pushNotificationConfig/set' method.
A2ASetTaskPushNotificationConfigResponse: JSON-RPC response for the 'tasks/pushNotificationConfig/set' method.
A2ASetTaskPushNotificationConfigSuccessResponse: JSON-RPC success response model for the 'tasks/pushNotificationConfig/set' method.
A2ASetTaskPushNotificationConfigSuccessResponseSTPR: JSON-RPC success response model for the 'tasks/pushNotificationConfig/set' method.
A2ATask: Represents a single, stateful operation or conversation between a client and an agent.
A2ATaskArtifactUpdateEvent: An event sent by the agent to notify the client that an artifact has been generated or updated. This is typically used in streaming models.
A2ATaskIdParams: A Structured value that holds the parameter values to be used during the invocation of the method.
A2ATaskNotCancelableError: JSON-RPC error indicating invalid JSON was received by the server.
A2ATaskNotFoundError: JSON-RPC error indicating invalid JSON was received by the server.
A2ATaskPushNotificationConfig: A container associating a push notification configuration with a specific task.
A2ATaskQueryParams: A Structured value that holds the parameter values to be used during the invocation of the method.
A2ATaskResubscriptionRequest: JSON-RPC request model for the 'tasks/resubscribe' method.
A2ATaskStatus: Represents the status of a task at a specific point in time.
A2ATaskStatusUpdateEvent: An event sent by the agent to notify the client of a change in a task's status. This is typically used in streaming or subscription models.
A2ATaskStore: Simplified interface for task storage providers. Stores and retrieves the task.
A2ATextPart: Represents a text segment within a message or artifact.
A2AType
A2AUnsupportedOperationError: JSON-RPC error indicating invalid JSON was received by the server.
A2AUtilities: Server utilities class
Darto
DartoHeader
DartoMailer
DartoTransporter
Logger
Request
Response
Route
Router
SetTaskPushNotificationConfigResponse: JSON-RPC response model for the 'tasks/pushNotificationConfig/set' method.
Upload
WebSocketBroadcast
WebSocketServer

Enums

A2ATaskState: Represents the possible lifecycle states of a Task.
A2ATransportProtocol: Supported A2A transport protocols.

Mixins

A2AJSONRPCErrorResponseM: Common JSON error response mixin

Extensions

DartoExtensions on Darto
RequestExtensions on Request
ResponseExtension on Response
WebSocketBroadcastExtension on WebSocket
WebSocketSendExtension on WebSocket
WebSocketUtils on WebSocket

Constants

ACCEPTED → const int
ALREADY_REPORTED → const int
BAD_GATEWAY → const int
BAD_REQUEST → const int
BANDWIDTH_LIMIT_EXCEEDED → const int
CHECKPOINT → const int
CONFLICT → const int
CONTINUE → const int
CREATED → const int
EARLY_HINTS → const int
EXPECTATION_FAILED → const int
FAILED_DEPENDENCY → const int
finalStates → const List<A2ATaskState>
FORBIDDEN → const int
FOUND → const int
GATEWAY_TIMEOUT → const int
GONE → const int
HTTP_VERSION_NOT_SUPPORTED → const int
I_AM_A_TEAPOT → const int
IM_USED → const int
INSUFFICIENT_STORAGE → const int
INTERNAL_SERVER_ERROR → const int
LENGTH_REQUIRED → const int
LOCKED → const int
LOOP_DETECTED → const int
METHOD_NOT_ALLOWED → const int
MOVED_PERMANENTLY → const int
MOVED_TEMPORARILY → const int
MULTI_STATUS → const int
MULTIPLE_CHOICES → const int
NETWORK_AUTHENTICATION_REQUIRED → const int
NO_CONTENT → const int
NON_AUTHORITATIVE_INFORMATION → const int
nonCancelableStates → const List<A2ATaskState>
NOT_ACCEPTABLE → const int
NOT_EXTENDED → const int
NOT_FOUND → const int
NOT_IMPLEMENTED → const int
NOT_MODIFIED → const int
OK → const int
PARTIAL_CONTENT → const int
PAYLOAD_TOO_LARGE → const int
PAYMENT_REQUIRED → const int
PERMANENT_REDIRECT → const int
PRECONDITION_FAILED → const int
PRECONDITION_REQUIRED → const int
PROCESSING → const int
PROXY_AUTHENTICATION_REQUIRED → const int
REQUEST_ENTITY_TOO_LARGE → const int
REQUEST_HEADER_FIELDS_TOO_LARGE → const int
REQUEST_TIMEOUT → const int
REQUEST_URI_TOO_LONG → const int
REQUESTED_RANGE_NOT_SATISFIABLE → const int
RESET_CONTENT → const int
SEE_OTHER → const int
SERVICE_UNAVAILABLE → const int
supportedTypes → const List<Type>: Supported request types
SWITCHING_PROTOCOLS → const int
TEMPORARY_REDIRECT → const int
terminalStates → const List<A2ATaskState>
TOO_EARLY → const int
TOO_MANY_REQUESTS → const int
UNAUTHORIZED → const int
UNAVAILABLE_FOR_LEGAL_REASONS → const int
UNPROCESSABLE_ENTITY → const int
UNSUPPORTED_MEDIA_TYPE → const int
UPGRADE_REQUIRED → const int
URI_TOO_LONG → const int
USE_PROXY → const int
VARIANT_ALSO_NEGOTIATES → const int

Typedefs

A2AAgentExecutionEvent = Object: Agent Execution Event
A2AId = Object: The ID type, String or num.
A2AResponseOrGenerator = Object: Transport handler response or async* function.
A2AResult = Object: Result type
A2ASV = Map<String, dynamic>: Structured value type
A2ATaskOrMessage = Object
DartoRouteBuilder = void Function(Darto app)
Err = Exception
ErrorHandler = void Function(Exception err, Request req, Response res, void ([Exception error]))
Handler = void
Middleware = dynamic Function(Request req, Response res, NextFunction next)
NextFunction = void Function([Exception error])
ParamMiddleware = void Function(Request req, Response res, NextFunction next, String value)
RenderLayout = FutureOr<Response> Function(String content)
RouteHandler = dynamic Function(Request req, Response res)
RouterRouteBuilder = void Function(Router router)
WebSocketMiddleware = FutureOr<bool> Function(HttpRequest request)

Classes

Enums

Mixins

Extensions

Constants

Typedefs

a2a package

a2a library