--- schema_version: "1" id: f1736bc2fcf0cb38cecc5a3817471f084002ec7246d5e24501b4c0aa1c0301bd title: A2A Connector 1.0 Reference collection: mulesoft version: current locale: en-us portal_url: https://docs.salesforce.com/mulesoft/current/en-us/a2a-connector/1.0/a2a-connector-reference.md canonical_url: https://docs.mulesoft.com/a2a-connector/1.0/a2a-connector-reference source_site: docs.mulesoft.com content_type: documentation content_hash: fef27704752ac0c4f566387a5ca8e02201ba0ce68916167445006490f40c9d8a description: MuleSoft Documentation Site release: "1.0" latest: false --- --- product: A2A Connector version: 1.0 --- # A2A Connector 1.0 Reference > For the full documentation index, see: https://docs.mulesoft.com/llms.txt Anypoint Connector for Agent2Agent (A2A) (A2A Connector) provides A2A protocol support for LLM agents, enabling your agents to talk to other agents. ## Configurations ### Client The application or AI system that initiates requests and consumes services offered by A2A servers. This allows Mule apps to act as A2A brokers between non A2A “head” agents and A2A “node” agents. #### Parameters

Name	Type	Description	Required
Name	String	Name for this configuration. Connectors reference the configuration with this name.	x
Connection	Client Connection	The connection types to provide to this configuration.	x
Name	String	ID used to reference this configuration.	x
Expiration Policy	Expiration Policy	Configures the minimum amount of time that a dynamic configuration instance can remain idle before Mule considers it eligible for expiration.

#### Connection Types ##### Client Connection ###### Parameters

Name	Type	Description	Default Value	Required
Server Url	String	Base URL of the target A2A server.		x
Request Timeout	Number	Sets the duration to wait for server responses before timing out requests.	30
Request Timeout Unit	Enumeration, one of: NANOSECONDS MICROSECONDS MILLISECONDS SECONDS MINUTES HOURS DAYS	Time unit for the Request Timeout field.	SECONDS
Authentication	HttpRequestAuthentication
Default Headers	Object	Default headers.
Tls Context	TLS
Reconnection	Reconnection	When the application is deployed, a connectivity test is performed on all connectors. If set to true, deployment fails if the test doesn’t pass after exhausting the associated reconnection strategy.

#### Associated Operations - [A2A Client - Cancel Task](#CancelTask) - [A2A Client - Delete Push Notification Config](#DeletePushNotificationConfig) - [A2A Client - Get Card](#GetCard) - [A2A Client - Get Push Notification Config](#GetPushNotificationConfig) - [A2A Client - Get Task](#GetTask) - [A2A Client - List Push Notification Configs](#ListPushNotificationConfigs) - [A2A Client - Send Message](#SendMessage) - [A2A Client - Send Stream Message](#SendStreamMessage) - [A2A Client - Set Push Notification Config](#SetPushNotificationConfig) - [A2A Client - Task Resubscribe](#TaskResubscribe) --- ### Server The A2A server acts as a remote agent that exposes an HTTP(S) endpoint and implements the A2A protocol methods for interacting with other AI agents. This allows Mule-based agents to receive and respond to A2A protocol-compliant requests. #### Parameters

Name	Type	Description	Default Value	Required
Name	String	Name for this configuration. Connectors reference the configuration with this name.		x
Connection	Connection	The connection types to provide to this configuration.		x
Name	String	ID used to reference this configuration.		x
Expiration Policy	Expiration Policy	Configures the minimum amount of time that a dynamic configuration instance can remain idle before Mule considers it eligible for expiration.
Card Json	String	Agent card as a JSON string.
Card Path	String	The location of a file to load the agent card. The file can point to a resource on the classpath or on a disk.
Task History Enabled	Boolean	Set to `true` to enable retrieval of task history. Task history is stored as message objects.	false
Default Max History Length	Number	Maximum number of task history objects to store.
Task Repository Object Store	ObjectStore

#### Connection Types ##### Server Connection ###### Parameters

Name	Type	Description	Required
Listener Config	String	Reference to the `<http:listener-config>` used to expose the inbound endpoint.	x
Agent Path	String	Path at which the agent is available.	x
Tls Context Ref	String
Reconnection	Reconnection	When the application is deployed, a connectivity test is performed on all connectors. If set to true, deployment fails if the test doesn’t pass after exhausting the associated reconnection strategy.

#### Associated Operations - [A2A Server - Send Push Notification](#SendPushNotification) - [A2A Server - Update Task Artifact](#UpdateTaskArtifact) - [A2A Server - Update Task Status](#UpdateTaskStatus) #### Associated Sources - [A2A Server - On Push Notification Set Listener](#PushNotificationConfigListener) - [A2A Server - Task Listener](#TaskListener) - [A2A Server - On Task Stream Listener](#TaskStreamListener) ## A2A Client - Cancel Task `` Cancels the task specified by its unique identifier. It’s used to stop a previously initiated task. ### Parameters

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Task Id	Any	Unique identifier for the task.	#[payload]
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Response Attributes

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Get Push Config Params	Any	Object for fetching the push notification configuration for a task.		x
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Response Attributes

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Use Extended Card	Boolean	When true, fetches the authenticated extended agent card instead of the normal agent card.	false
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Response Attributes

### For Configurations - [Client](#Client) ### Throws - A2A:CONNECTIVITY - A2A:INVALID\_AGENT\_CARD - A2A:REQUEST\_TIMEOUT - A2A:RETRY\_EXHAUSTED - A2A:UNAUTHORIZED ## A2A Client - Get Push Notification Config `` Retrieves the current push notification configuration for a specified task. ### Parameters

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Get Push Config Params	Any	Object for fetching the push notification configuration for a task.		x
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Response Attributes

### For Configurations - [Client](#Client) ### Throws - A2A:CONNECTIVITY - A2A:INTERNAL\_ERROR - A2A:INVALID\_PARAMS - A2A:INVALID\_REQUEST - A2A:JSON\_RPC\_ERROR - A2A:METHOD\_NOT\_FOUND - A2A:PARSE\_ERROR - A2A:PUSH\_NOTIFICATION\_UNSUPPORTED - A2A:REQUEST\_TIMEOUT - A2A:RETRY\_EXHAUSTED - A2A:SERVER\_ERROR - A2A:TASK\_NOT\_CANCELABLE - A2A:TASK\_NOT\_FOUND - A2A:UNAUTHORIZED - A2A:UNSUPPORTED\_OPERATION ## A2A Client - Get Task `` Retrieves information about a task based on a provided query. This enables you to fetch the status or details of a task from another agent. ### Parameters

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Task Query	Any		#[payload]
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Response Attributes

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Get Push Config Params	Any	Object for fetching the push notification configuration for a task.		x
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Response Attributes

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Message	Any	Message to send.	#[payload]
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Response Attributes

### For Configurations - [Client](#Client) ### Throws - A2A:CONNECTIVITY - A2A:INTERNAL\_ERROR - A2A:INVALID\_PARAMS - A2A:INVALID\_REQUEST - A2A:JSON\_RPC\_ERROR - A2A:METHOD\_NOT\_FOUND - A2A:PARSE\_ERROR - A2A:REQUEST\_TIMEOUT - A2A:RETRY\_EXHAUSTED - A2A:SERVER\_ERROR - A2A:TASK\_NOT\_CANCELABLE - A2A:TASK\_NOT\_FOUND - A2A:UNAUTHORIZED - A2A:UNSUPPORTED\_OPERATION ## A2A Client - Send Stream Message `` Sends a message to the A2A agent and establishes an SSE streaming connection to receive real-time status updates, artifacts, and error notifications as the agent processes the request. ### Parameters

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Stream Message	Any	Message to send (MessageSendParams schema).	#[payload]
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Streaming Response Attributes

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Task Push Notification Config	Any	Associates a push notification configuration with a specific task.		x
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Response Attributes

### For Configurations - [Client](#Client) ### Throws - A2A:CONNECTIVITY - A2A:INTERNAL\_ERROR - A2A:INVALID\_PARAMS - A2A:INVALID\_REQUEST - A2A:JSON\_RPC\_ERROR - A2A:METHOD\_NOT\_FOUND - A2A:PARSE\_ERROR - A2A:PUSH\_NOTIFICATION\_UNSUPPORTED - A2A:REQUEST\_TIMEOUT - A2A:RETRY\_EXHAUSTED - A2A:SERVER\_ERROR - A2A:TASK\_NOT\_CANCELABLE - A2A:TASK\_NOT\_FOUND - A2A:UNAUTHORIZED - A2A:UNSUPPORTED\_OPERATION ## A2A Client - Task Resubscribe `` Reconnects to an existing SSE streaming session for an ongoing task to receive buffered events and continue receiving real-time updates from where the connection was lost. ### Parameters

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Task Id Params	Any	Task ID to resubscribe to (TaskIdParams schema).	#[payload]
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Additional Properties	Object	Additional properties to include with the request. Use this field to specify custom key-value pairs that are sent with the A2A connector request. This field is optional and null-safe.
Target Variable	String	Name of the variable that stores the operation’s output.
Target Value	String	Expression that evaluates the operation’s output. The outcome of the expression is stored in the Target Variable field.	#[payload]
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Streaming Response Attributes

### For Configurations - [Client](#Client) ### Throws - A2A:CONNECTIVITY - A2A:INTERNAL\_ERROR - A2A:INVALID\_PARAMS - A2A:INVALID\_REQUEST - A2A:JSON\_RPC\_ERROR - A2A:METHOD\_NOT\_FOUND - A2A:PARSE\_ERROR - A2A:PUSH\_NOTIFICATION\_UNSUPPORTED - A2A:REQUEST\_TIMEOUT - A2A:RETRY\_EXHAUSTED - A2A:SERVER\_ERROR - A2A:TASK\_NOT\_CANCELABLE - A2A:TASK\_NOT\_FOUND - A2A:UNAUTHORIZED - A2A:UNSUPPORTED\_OPERATION ## A2A Server - Send Push Notification `` Sends a push notification with the provided task or message payload. This operation allows sending async updates at various stages or steps of a task, not just at the end. The notification message is automatically wrapped in JSON-RPC format. This is a non-blocking operation that uses CompletionCallback for async result handling. ### Parameters

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Notification Message	Any	The JSON notification message (task or message object). This value is automatically wrapped in JSON-RPC format.	#[payload]
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Artifact Update Content	Any	TaskArtifactUpdateEvent content following A2A specification.	#[payload]
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### For Configurations - [Server](#Server) ### Throws - A2A:CONNECTIVITY - A2A:INTERNAL\_ERROR - A2A:INVALID\_PARAMS - A2A:INVALID\_REQUEST - A2A:JSON\_RPC\_ERROR - A2A:METHOD\_NOT\_FOUND - A2A:PARSE\_ERROR - A2A:PUSH\_NOTIFICATION\_UNSUPPORTED - A2A:REQUEST\_TIMEOUT - A2A:RETRY\_EXHAUSTED - A2A:SERVER\_ERROR - A2A:TASK\_NOT\_CANCELABLE - A2A:TASK\_NOT\_FOUND - A2A:UNAUTHORIZED - A2A:UNSUPPORTED\_OPERATION ## A2A Server - Update Task Status `` Updates a task status and broadcasts the update to all connected SSE clients. This operation only works when there is an active streaming context, such as one established by the [A2A Server - On Task Stream Listener](#TaskStreamListener) source. > [!NOTE] When using this operation in a TaskStreamListener flow, the flow’s final payload is > ignored. To close the SSE connection, include `final: true` in the TaskStatusUpdateEvent JSON > payload. ### Parameters

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Status Update Content	Any	TaskStatusUpdateEvent content following A2A specification.	#[payload]
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Error Mappings	Array of Error Mapping	Set of error mappings.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Primary Node Only	Boolean	Primary Node Only specifies whether this source should be executed only on the primary node when running in a cluster.
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Redelivery Policy	Redelivery Policy	Defines a policy for processing the redelivery of the same message
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.
Additional Headers	Object	Additional HTTP headers to include with each request.
Authentication	HttpRequestAuthentication
Push notification request timeout	Number		60
Request Timeout Unit	Enumeration, one of: NANOSECONDS MICROSECONDS MILLISECONDS SECONDS MINUTES HOURS DAYS	Time unit for the Push notification request timeout field.	SECONDS
Proxy Config	HttpProxyConfig	Proxy configuration.

### Output

Type	Any
Attributes Type	Response Attributes

### For Configurations - [Server](#Server) ## A2A Server - Task Listener `` Allows a Mule application to listen for and receive incoming A2A protocol-compliant requests from other AI agents, enabling the Mule-based agent to act as an A2A server and respond to tasks. ### Parameters

Name	Type	Description	Default Value	Required
Configuration	String	Name of the configuration to use.		x
Primary Node Only	Boolean	Determines whether to execute this source on only the primary node when running Mule instances in a cluster.
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.		x
Redelivery Policy	Redelivery Policy	Defines a policy for processing the redelivery of the same message.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.
Response	Any		#[payload]
Response Headers	Object	HTTP response header.

### Output

Type	Any
Attributes Type	Request Attributes

### For Configurations - [Server](#Server) ## A2A Server - On Task Stream Listener `` Server-side listener for streaming task requests. Activated when clients send streaming requests (messages/stream) to trigger server-side flows and enable real-time SSE event delivery. This source is a prerequisite for applications to support streaming. This source is to be used in conjunction with [A2A Server - Task Listener](#TaskListener). ### Parameters

Name	Type	Description	Required
Configuration	String	Name of the configuration to use.	x
Primary Node Only	Boolean	Determines whether to execute this source on only the primary node when running Mule instances in a cluster.
Config Ref	ConfigurationProvider	Name of the configuration to use to execute this component.	x
Redelivery Policy	Redelivery Policy	Defines a policy for processing the redelivery of the same message.
Reconnection Strategy	Reconnect Reconnect Forever	Retry strategy in case of connectivity errors.

### Output

Type	Any
Attributes Type	Request Attributes

### For Configurations - [Server](#Server) ## Types ### TLS Configures TLS to provide secure communications for the Mule app.

Field	Type	Description
Enabled Protocols	String	Comma-separated list of protocols enabled for this context.
Enabled Cipher Suites	String	Comma-separated list of cipher suites enabled for this context.
Trust Store	Truststore	Configures the TLS truststore.
Key Store	Keystore	Configures the TLS keystore.
Revocation Check	Standard Revocation Check Custom OCSP Responder CRL File	Configures a revocation checking mechanism.

### Truststore Configures the truststore for TLS.

Field	Type	Description
Path	String	Path to the truststore. Mule resolves the path relative to the current classpath and file system.
Password	String	Password used to protect the truststore.
Type	String	Type of store.
Algorithm	String	Encryption algorithm that the truststore uses.
Insecure	Boolean	If `true`, Mule stops performing certificate validations. Setting this to `true` can make connections vulnerable to attacks.

### Keystore Configures the keystore for the TLS protocol. The keystore you generate contains a private key and a public certificate.

Field	Type	Description
Path	String	Path to the keystore. Mule resolves the path relative to the current classpath and file system.
Type	String	Type of store.
Alias	String	Alias of the key to use when the keystore contains multiple private keys. By default, Mule uses the first key in the file.
Key Password	String	Password used to protect the private key.
Password	String	Password used to protect the keystore.
Algorithm	String	Encryption algorithm that the keystore uses.

### Standard Revocation Check Configures standard revocation checks for TLS certificates.

Field	Type	Description
Only End Entities	Boolean	Which elements to verify in the certificate chain: `true` Verify only the last element in the certificate chain. `false` Verify all elements in the certificate chain.
Prefer Crls	Boolean	How to check certificate validity: `true` Check the Certification Revocation List (CRL) for certificate validity. `false` Use the Online Certificate Status Protocol (OCSP) to check certificate validity.
No Fallback	Boolean	Whether to use the secondary method to check certificate validity: `true` Use the method that wasn’t specified in the Prefer Crls field (the secondary method) to check certificate validity. `false` Don’t use the secondary method to check certificate validity.
Soft Fail	Boolean	What to do if the revocation server can’t be reached or is busy: `true` Avoid verification failure. `false` Allow the verification to fail.

### Custom OCSP Responder Configures a custom OCSP responder for certification revocation checks.

Field	Type	Description	Default Value	Required
Url	String	URL of the OCSP responder.
Cert Alias	String	Alias of the signing certificate for the OCSP response. If specified, the alias must be in the truststore.

### CRL File Specifies the location of the certification revocation list (CRL) file.

Field	Type	Description	Default Value	Required
Path	String	Path to the CRL file.

### Reconnection Configures a reconnection strategy for an operation.

Field	Type	Description	Default Value	Required
Fails Deployment	Boolean	When the application is deployed, a connectivity test is performed on all connectors. If set to true, deployment fails if the test doesn’t pass after exhausting the associated reconnection strategy.
Reconnection Strategy	Reconnect Reconnect Forever	Reconnection strategy to use.

### Reconnect Configures a standard reconnection strategy, which specifies how often to reconnect and how many reconnection attempts the connector source or operation can make.

Field	Type	Description	Default Value
Frequency	Number	How often to attempt to reconnect, in milliseconds.
Blocking	Boolean	If `false`, the reconnection strategy runs in a separate, non-blocking thread.	true
Count	Number	How many reconnection attempts the Mule app can make.

### Reconnect Forever Configures a forever reconnection strategy by which the connector source or operation attempts to reconnect at a specified frequency for as long as the Mule app runs.

Field	Type	Description	Default Value	Required
Frequency	Number	How often to attempt to reconnect, in milliseconds.
Blocking	Boolean	If `false`, the reconnection strategy runs in a separate, non-blocking thread.	true

### Expiration Policy Configures an expiration policy strategy.

Field	Type	Description	Default Value	Required
Max Idle Time	Number	Configures the maximum amount of time that a dynamic configuration instance can remain idle before Mule considers it eligible for expiration.
Time Unit	Enumeration, one of: NANOSECONDS MICROSECONDS MILLISECONDS SECONDS MINUTES HOURS DAYS	Time unit for the Max Idle Time field.

### Response Attributes In A2A Connector 1.0 and later, this represents the HTTP response attributes for an A2A request. This type encapsulates HTTP response metadata, including status code, headers, and reason phrase, that are sent as part of an A2A protocol response.

Field	Type	Description	Required
Status Code	Number	HTTP status code of the response.	x
Headers	Object	Map of HTTP headers in the message.	x
Reason Phrase	String	HTTP reason phrase of the response.

### Error Mapping

Field	Type	Description	Default Value	Required
Source	Enumeration, one of: ANY REDELIVERY_EXHAUSTED TRANSFORMATION EXPRESSION SECURITY CLIENT_SECURITY SERVER_SECURITY ROUTING CONNECTIVITY RETRY_EXHAUSTED TIMEOUT
Target	String			x

### Streaming Response Attributes In A2A Connector 1.0 and later, this represents the HTTP response attributes for A2A streaming operations (SSE). This specialized type extends [Response Attributes](#ResponseAttributes) with streaming-specific metadata, including information about final events received during the SSE session. This final event information is not related to the A2A protocol final event, but the connector’s.

Field	Type	Description	Default Value	Required
Final Event Found	Boolean	Whether a final event was found during SSE session.	false
Status Code	Number	HTTP status code of the response.		x
Headers	Object	Map of HTTP headers in the message.		x
Reason Phrase	String	HTTP reason phrase of the response.

### Request Attributes In A2A Connector 1.0 and later, this represents the HTTP request attributes for an A2A incoming request. This type encapsulates the HTTP request metadata, including query parameters and headers, that are received as part of an A2A protocol request.

Field	Type	Description	Required
Task Id	String	The ID assigned to this task, either provided by the client or auto-generated by the connector.	x
Context Id	String	The context ID assigned to this task, either provided by the client or auto-generated by the connector.	x
Query Params	Object	The query parameters received in the HTTP request.	x
Headers	Object	The HTTP headers received in the request.	x
Version	String	HTTP version of the request. Former `http.version`.	x
Scheme	String	HTTP scheme of the request. Former `http.scheme`.	x
Method	String	HTTP method of the request. Former `http.method`.	x
Local Address	String	Local host address from the server.	x
Remote Address	String	Remote host address from the sender. Former `http.remote.address`.	x
Client Certificate	Certificate Data	Client certificate (if 2 way TLS is enabled). Former `http.client.cert`.

### Certificate Data

Field	Type	Description
Basic Constraints	Number	Basic constraints extension value indicating if the certificate can be used to sign other certificates.
Critical Extension OI Ds	Array of String	Object identifiers (OIDs) of critical extensions in the certificate.
Encoded	Binary	The encoded form of the certificate.
Extended Key Usage	Array of String	Extended key usage extension indicating specific purposes for which the certificate public key can be used.
Extensions	Array of Certificate Extension	Certificate extensions providing additional information about the certificate.
Issuer Alternative Names	Array of Alternative Name Data	Alternative names for the certificate issuer.
Issuer DN	Principal Data	Distinguished name of the certificate issuer.
Issuer Unique ID	Array of Boolean	Unique identifier for the certificate issuer.
Issuer X500 Principal	X500 Principal Data	X.500 principal information for the certificate issuer.
Key Usage	Array of Boolean	Key usage extension indicating the purposes for which the certificate public key can be used.
Name	String	Name associated with the certificate.
Non Critical Extension OI Ds	Array of String	Object identifiers (OIDs) of non-critical extensions in the certificate.
Not After	Date	Expiration date of the certificate.
Not Before	Date	Date from which the certificate is valid.
Public Key	Public Key Data	Public key information from the certificate.
Serial Number	Number	Serial number of the certificate.
Serial Number Object	Serial Number Data	Serial number object containing detailed serial number information.
Sig Alg Name	String	Name of the signature algorithm used to sign the certificate.
Sig Alg OID	String	Object identifier (OID) of the signature algorithm.
Sig Alg Params	Binary	Parameters for the signature algorithm.
Signature	Binary	Digital signature of the certificate.
Subject Alternative Names	Array of Alternative Name Data	Alternative names for the certificate subject.
Subject DN	Principal Data	Distinguished name of the certificate subject.
Subject X500 Principal	X500 Principal Data	X.500 principal information for the certificate subject.
Type	String	Type of the certificate.
Version	Number	Version number of the certificate format.

### Certificate Extension

Field	Type	Description
Criticality	Boolean	Indicates whether the extension is critical. If `true`, the extension must be processed by the certificate user.
Oid	String	Object identifier (OID) that uniquely identifies the extension type.
Value	Binary	The extension value in its encoded form.

### Alternative Name Data

Field	Type	Description	Default Value	Required
Name	String	The alternative name value.
Type	Number	The type of alternative name.

### Principal Data

Field	Type	Description	Default Value	Required
Common Name	String	The common name (CN) component of the distinguished name.
Name	String	The full distinguished name string representation.

### X500 Principal Data

Field	Type	Description	Default Value	Required
Name	String	The X.500 distinguished name in string format.

### Public Key Data

Field	Type	Description
Algorithm	String	The algorithm used for the public key (for example, RSA, DSA, EC).
Encoded	Binary	The encoded form of the public key.
Modulus	Number	The modulus value for RSA public keys.
Params	Number	Algorithm-specific parameters for the public key.
Public Key	String	The public key value in string representation.

### Serial Number Data

Field	Type	Description	Default Value	Required
Serial Number	Number	The serial number value of the certificate.

### Redelivery Policy Configures the redelivery policy for executing requests that generate errors. You can add a redelivery policy to any source in a flow.

Field	Type	Description
Max Redelivery Count	Number	Maximum number of times to process a redelivered request unsuccessfully before returning a REDELIVERY_EXHAUSTED error.
Message Digest Algorithm	String	Secure hashing algorithm to use if the Use Secure Hash field is `true`. If the payload of the message is a Java object, Mule ignores this value and returns the value that the payload’s `hashCode()` returned.
Message Identifier	Redelivery Policy Message Identifier	One or more expressions that determine if a message was redelivered. This property can be set only if the Use Secure Hash field is `false`.
Object Store	ObjectStore	Configures the object store that stores the redelivery counter for each message.

### Redelivery Policy Message Identifier Configures how to identify a redelivered message and how to find out when the message was redelivered.

Field	Type	Description	Default Value	Required
Use Secure Hash	Boolean	If `true`, Mule uses a secure hash algorithm to identify a redelivered message.
Id Expression	String	One or more expressions that determine when a message was redelivered. You can set this property only if the Use Secure Hash field is `false`.

## See Also - [Using Anypoint Code Builder to Configure a Connector](https://docs.mulesoft.com/connectors/introduction/intro-config-use-acb) - [Using Studio to Configure a Connector](https://docs.mulesoft.com/connectors/introduction/intro-config-use-studio) - [A2A Connector Overview](https://docs.mulesoft.com/a2a-connector/1.0/) - [Salesforce Help](https://help.salesforce.com)