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virtual_services_messaging_virtual_service

Create, deploy, and manage messaging virtual services for IBM MQ, ActiveMQ, and Kafka to simulate broker interactions for testing.

Instructions

    Operations on messaging virtual services.
    Use this when a user needs to create, update, deploy, or manage a messaging virtual service.

    Actions:
    - read: Get full details of a virtual service.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
    - list: List messaging virtual services.
        args:
            workspace_id (int): Mandatory.
            serviceId (int): Optional. Filter by service.
            limit (int, default=10): Max results (1–50).
            offset (int, default=0): Pagination offset.
    - create: Create a messaging virtual service for any supported protocol.
        args:
            workspace_id (int): Mandatory.
            name (str): Mandatory.
            serviceId (int): Mandatory.
            harborId (str): Mandatory. Location harbor ID.
            shipId (str): Mandatory. Location ship ID.
            messagingProtocol (str): Mandatory. One of: IBM_MQ9_JMS, IBM_MQ9_NATIVE,
                ACTIVE_MQ_CLASSIC, ACTIVE_MQ_ARTEMIS, KAFKA.
            brokerConfig (dict): Mandatory. Protocol-specific connection config.

Protocol-to-BrokerConfig field matrix: IBM_MQ9_JMS / IBM_MQ9_NATIVE: hostname, port (default "1414"), channel, queueManager, username, password, sslAuthentication, sslCipherSuite, queues, topics, subscriptions, flowConfigurations. ACTIVE_MQ_CLASSIC / ACTIVE_MQ_ARTEMIS: hostname, port (default "61616"), username, password, embeddedBroker, sslAuthentication, queues, topics, subscriptions, flowConfigurations. KAFKA: hostname, port (e.g. "broker1:9092,broker2:9092"), username (optional), password (optional), autoOffsetReset (earliest|latest|none), numPartitions, topics, flowConfigurations.

            mockServiceTransactions (list): Optional. Transaction references [{txnId, priority, ...}].
            mockServiceRecordings (list): Optional. Recording references [{recordingId, runtimeConfig}].
            recorderConfig (dict): Optional. Live recording config {maxMessagesCount, maxMessagesPerSecondCount, mappings}.
            priorityMode (str): Optional. DEFAULT or UNIQUE_PRIORITY.
            responseDelay (dict): Optional. {type, fixedDelay} or {type, median, sigma} etc.
            messagingRunnerEnabled (bool): Optional. Default true.
    - update: Update an existing messaging virtual service (partial — only provided fields change).
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            name (str): Optional.
            serviceId (int): Optional.
            harborId (str): Optional.
            shipId (str): Optional.
            messagingProtocol (str): Optional. Changing protocol requires a new brokerConfig.
            brokerConfig (dict): Optional.
            mockServiceTransactions (list): Optional.
            mockServiceRecordings (list): Optional.
            recorderConfig (dict): Optional.
            priorityMode (str): Optional.
            responseDelay (dict): Optional.
            messagingRunnerEnabled (bool): Optional.
    - create-mq9: (Legacy) Create an IBM MQ9 virtual service using named fields.
        args:
            workspace_id (int): Mandatory.
            name (str): Mandatory.
            serviceId (int): Mandatory.
            harborId (str): Mandatory.
            shipId (str): Mandatory.
            mq9_broker_hostname (str): Mandatory.
            mq9_broker_port (int): Mandatory.
            mq9_broker_channel (str): Mandatory.
            mq9_queue_manager (str): Mandatory.
            mq9_queue_username (str): Mandatory.
            mq9_queue_password (str): Mandatory.
    - update-mq9: (Legacy) Update IBM MQ9 virtual service using named fields.
        args: Same as create-mq9 but all optional except workspace_id and vs_id (int).
    - deploy: Deploy a virtual service.
        Action result contains trackingId. Use tracking tool to poll until FINISHED or FAILED.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
    - stop: Stop a running virtual service.
        Action result contains trackingId.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
    - configure: Hot-reload transactions into a running virtual service.
        Action result contains trackingId.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
    - assign_transactions: Assign transactions to a messaging virtual service.
        When the broker config uses flow configurations, pass flow_configuration so the
        server can copy the named flow's routing (sourceName, sourceType, destinations)
        onto every newly added transaction.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            transaction_ids (list[int]): Mandatory.
            flow_configuration (str): Optional. Name of a flow in brokerConfig.flowConfigurations[].name.
                Required when the VS uses flow-based routing — omitting it leaves transactions with
                an empty MessagingTransactionMapping (no routing).
    - unassign_transactions: Unassign transactions from a virtual service.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            transaction_ids (list[int]): Mandatory.
    - assign_recordings: Assign recordings to a messaging virtual service.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            recording_ids (list[int]): Mandatory. IDs of recordings to assign.
    - unassign_recordings: Unassign recordings from a messaging virtual service.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            recording_ids (list[int]): Mandatory. IDs of recordings to unassign.
    - assign_configuration: Assign a configuration to a virtual service.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            configuration_id (int): Mandatory. Pass null to unassign.
    - set_proxy: Set proxy configuration.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            proxyUrl (str): Mandatory.
            nonProxyHosts (str): Optional.
            username (str): Optional.
            password (str): Optional.
            certificate_id (int): Optional.
    - unset_proxy: Remove proxy configuration.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
    - assign_queue: Assign a queue to the virtual service.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            queue_name (str): Mandatory.
    - assign_topic: Assign a topic to the virtual service.
        args:
            workspace_id (int): Mandatory.
            id (int): Mandatory.
            topic_name (str): Mandatory.

    VirtualService schema:
    {'$defs': {'AssignedAsset': {'properties': {'assetId': {'description': 'The identifier of the asset', 'title': 'Assetid', 'type': 'integer'}, 'assetUsageType': {'description': 'The usage type of the asset', 'title': 'Assetusagetype', 'type': 'string'}, 'alias': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'The asset certificate alias', 'title': 'Alias'}}, 'required': ['assetId', 'assetUsageType'], 'title': 'AssignedAsset', 'type': 'object'}, 'BrokerConfiguration': {'additionalProperties': True, 'properties': {'hostname': {'anyOf': [{'type': 'string'}, {'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Broker hostname', 'title': 'Hostname'}, 'port': {'anyOf': [{'type': 'string'}, {'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': "Broker port (string). Use 'host:port,host:port' for Kafka multi-broker lists.", 'title': 'Port'}, 'channel': {'anyOf': [{'type': 'string'}, {'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'IBM MQ channel name, e.g. SYSTEM.DEF.SVRCONN', 'title': 'Channel'}, 'queueManager': {'anyOf': [{'type': 'string'}, {'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'IBM MQ queue manager name', 'title': 'Queuemanager'}, 'username': {'anyOf': [{'type': 'string'}, {'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Broker username', 'title': 'Username'}, 'password': {'anyOf': [{'type': 'string'}, {'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Broker password', 'title': 'Password'}, 'sslAuthentication': {'anyOf': [{'type': 'boolean'}, {'type': 'null'}], 'default': None, 'description': 'Enable SSL/TLS authentication', 'title': 'Sslauthentication'}, 'sslCipherSuite': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'SSL cipher suite (IBM MQ only), e.g. TLS_RSA_WITH_AES_256_CBC_SHA256', 'title': 'Sslciphersuite'}, 'embeddedBroker': {'anyOf': [{'type': 'boolean'}, {'type': 'null'}], 'default': None, 'description': 'Start an embedded broker — ACTIVE_MQ_CLASSIC and ARTEMIS only', 'title': 'Embeddedbroker'}, 'autoOffsetReset': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'Kafka offset reset strategy: earliest, latest, or none', 'title': 'Autooffsetreset'}, 'numPartitions': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Kafka number of partitions (default 1)', 'title': 'Numpartitions'}, 'queues': {'anyOf': [{'items': {'$ref': '#/$defs/BrokerQueue'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'List of queues', 'title': 'Queues'}, 'topics': {'anyOf': [{'items': {'$ref': '#/$defs/BrokerTopic'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'List of topics', 'title': 'Topics'}, 'subscriptions': {'anyOf': [{'items': {'$ref': '#/$defs/BrokerSubscription'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'List of subscriptions', 'title': 'Subscriptions'}, 'flowConfigurations': {'anyOf': [{'items': {'$ref': '#/$defs/FlowConfiguration'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'Broker-level flow routing configurations', 'title': 'Flowconfigurations'}}, 'title': 'BrokerConfiguration', 'type': 'object'}, 'BrokerQueue': {'properties': {'name': {'description': 'Queue name', 'title': 'Name', 'type': 'string'}}, 'required': ['name'], 'title': 'BrokerQueue', 'type': 'object'}, 'BrokerSubscription': {'properties': {'name': {'description': 'Subscription name', 'title': 'Name', 'type': 'string'}}, 'required': ['name'], 'title': 'BrokerSubscription', 'type': 'object'}, 'BrokerTopic': {'properties': {'name': {'description': 'Topic name', 'title': 'Name', 'type': 'string'}, 'isDurable': {'anyOf': [{'type': 'boolean'}, {'type': 'null'}], 'default': None, 'description': 'Whether the subscription is durable', 'title': 'Isdurable'}, 'durableSubscriptionName': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'Durable subscription name — required when isDurable=True', 'title': 'Durablesubscriptionname'}}, 'required': ['name'], 'title': 'BrokerTopic', 'type': 'object'}, 'Endpoint': {'properties': {'endpoint': {'description': 'Endpoint URL', 'title': 'Endpoint', 'type': 'string'}}, 'required': ['endpoint'], 'title': 'Endpoint', 'type': 'object'}, 'FlowConfiguration': {'properties': {'name': {'description': 'Flow configuration name', 'title': 'Name', 'type': 'string'}, 'transactionMapping': {'$ref': '#/$defs/FlowTransactionMapping', 'description': 'Source-to-destination routing for this flow'}}, 'required': ['name', 'transactionMapping'], 'title': 'FlowConfiguration', 'type': 'object'}, 'FlowTransactionMapping': {'properties': {'sourceName': {'description': 'Source queue/topic/subscription name', 'title': 'Sourcename', 'type': 'string'}, 'sourceType': {'description': 'Source type: QUEUE, TOPIC, or SUBSCRIPTION', 'title': 'Sourcetype', 'type': 'string'}, 'destinations': {'default': [], 'description': 'Destination list', 'items': {'$ref': '#/$defs/MessagingDestination'}, 'title': 'Destinations', 'type': 'array'}}, 'required': ['sourceName', 'sourceType'], 'title': 'FlowTransactionMapping', 'type': 'object'}, 'MessagingDestination': {'properties': {'destinationName': {'description': 'Destination name', 'title': 'Destinationname', 'type': 'string'}, 'destinationType': {'description': 'Destination type: QUEUE, TOPIC, or SUBSCRIPTION', 'title': 'Destinationtype', 'type': 'string'}}, 'required': ['destinationName', 'destinationType'], 'title': 'MessagingDestination', 'type': 'object'}, 'MockServiceRecording': {'properties': {'recordingId': {'description': 'ID of the recording to include in this virtual service', 'title': 'Recordingid', 'type': 'integer'}, 'runtimeConfig': {'anyOf': [{'$ref': '#/$defs/ReplayConfig'}, {'type': 'null'}], 'default': None, 'description': 'Replay configuration for this recording'}}, 'required': ['recordingId'], 'title': 'MockServiceRecording', 'type': 'object'}, 'MockServiceTransaction': {'properties': {'txnId': {'description': 'Transaction id.', 'title': 'Txnid', 'type': 'integer'}, 'priority': {'default': 10, 'description': 'Transaction Priority. If not specified, defaults to 10.', 'title': 'Priority', 'type': 'integer'}, 'destinations': {'anyOf': [{'items': {'$ref': '#/$defs/MessagingDestination'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'List of messaging destinations.', 'title': 'Destinations'}}, 'required': ['txnId'], 'title': 'MockServiceTransaction', 'type': 'object'}, 'ProxyConfiguration': {'additionalProperties': True, 'properties': {'proxyUrl': {'description': 'Proxy url', 'title': 'Proxyurl', 'type': 'string'}, 'nonProxyHosts': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'Non proxy hosts, | separated', 'title': 'Nonproxyhosts'}, 'username': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'description': 'Proxy username', 'title': 'Username'}, 'password': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'description': 'Proxy password', 'title': 'Password'}, 'certificateId': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Certificate asset identifier', 'title': 'Certificateid'}}, 'required': ['proxyUrl', 'username', 'password'], 'title': 'ProxyConfiguration', 'type': 'object'}, 'RecorderConfig': {'additionalProperties': True, 'properties': {'maxMessagesCount': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Maximum number of messages to capture per recording session', 'title': 'Maxmessagescount'}, 'maxMessagesPerSecondCount': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Rate limit for capturing messages per second', 'title': 'Maxmessagespersecondcount'}, 'mappings': {'anyOf': [{'items': {'$ref': '#/$defs/RecorderMapping'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'Inbound/outbound destination mappings for recording', 'title': 'Mappings'}}, 'title': 'RecorderConfig', 'type': 'object'}, 'RecorderMapping': {'properties': {'inboundDestination': {'description': 'Source destination to record from', 'title': 'Inbounddestination', 'type': 'string'}, 'outboundDestination': {'description': 'Destination to replay captured messages to', 'title': 'Outbounddestination', 'type': 'string'}, 'originType': {'description': 'Origin type: QUEUE, TOPIC, or SUBSCRIPTION', 'title': 'Origintype', 'type': 'string'}}, 'required': ['inboundDestination', 'outboundDestination', 'originType'], 'title': 'RecorderMapping', 'type': 'object'}, 'ReplayConfig': {'additionalProperties': True, 'properties': {'replayCount': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': 1, 'description': 'Number of times to replay the recording', 'title': 'Replaycount'}, 'delayBetweenReplays': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': 0, 'description': 'Delay in ms between replays', 'title': 'Delaybetweenreplays'}, 'initialDelay': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': 0, 'description': 'Initial delay in ms before the first replay', 'title': 'Initialdelay'}}, 'title': 'ReplayConfig', 'type': 'object'}, 'ResponseDelay': {'additionalProperties': True, 'properties': {'type': {'default': 'FIXED', 'description': 'Delay type: FIXED, LOGNORMAL, or UNIFORM', 'title': 'Type', 'type': 'string'}, 'fixedDelay': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Fixed delay in ms (FIXED type)', 'title': 'Fixeddelay'}, 'median': {'anyOf': [{'type': 'number'}, {'type': 'null'}], 'default': None, 'description': 'Median for LOGNORMAL distribution', 'title': 'Median'}, 'sigma': {'anyOf': [{'type': 'number'}, {'type': 'null'}], 'default': None, 'description': 'Sigma for LOGNORMAL distribution', 'title': 'Sigma'}, 'lower': {'anyOf': [{'type': 'number'}, {'type': 'null'}], 'default': None, 'description': 'Lower bound for UNIFORM distribution', 'title': 'Lower'}, 'upper': {'anyOf': [{'type': 'number'}, {'type': 'null'}], 'default': None, 'description': 'Upper bound for UNIFORM distribution', 'title': 'Upper'}}, 'title': 'ResponseDelay', 'type': 'object'}}, 'properties': {'id': {'description': 'The unique identifier of the virtual service', 'title': 'Id', 'type': 'integer'}, 'name': {'description': 'The name of the virtual service', 'title': 'Name', 'type': 'string'}, 'status': {'default': '', 'description': 'The status of the virtual service', 'title': 'Status', 'type': 'string'}, 'serviceId': {'description': 'The unique identifier of the service where the virtual service belongs', 'title': 'Serviceid', 'type': 'integer'}, 'type': {'description': "Type of the virtual service. Possible values are 'TRANSACTIONAL' and 'MESSAGING'. Transactional virtual services are used for simulating user interactions with web applications, while messaging virtual services are used for simulating message-based interactions.", 'title': 'Type', 'type': 'string'}, 'harborId': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'Location harbor identifier', 'title': 'Harborid'}, 'shipId': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'Location ship identifier', 'title': 'Shipid'}, 'configurationId': {'anyOf': [{'type': 'integer'}, {'type': 'null'}], 'default': None, 'description': 'Configuration identifier', 'title': 'Configurationid'}, 'noMatchingRequestPreference': {'description': "For transactional virtual services, defines the behavior when no matching request is found. Possible values are 'return404' and 'bypasslive'.", 'title': 'Nomatchingrequestpreference', 'type': 'string'}, 'endpointPreference': {'description': "For transactional virtual services, defines endpoint schema. Possible values are 'HTTP' and 'HTTPS'.", 'title': 'Endpointpreference', 'type': 'string'}, 'replicas': {'default': 1, 'description': 'The number of replicas for the virtual service. Always set to 1.', 'title': 'Replicas', 'type': 'integer'}, 'mockServiceTransactions': {'anyOf': [{'items': {'$ref': '#/$defs/MockServiceTransaction'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'List of transaction definitions associated with the virtual service', 'title': 'Mockservicetransactions'}, 'mockServiceRecordings': {'anyOf': [{'items': {'$ref': '#/$defs/MockServiceRecording'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'List of recording references associated with the virtual service', 'title': 'Mockservicerecordings'}, 'endpoints': {'anyOf': [{'items': {'$ref': '#/$defs/Endpoint'}, 'type': 'array'}, {'type': 'null'}], 'default': [], 'description': 'List of virtual service endpoints. Available after deployment only.', 'title': 'Endpoints'}, 'httpRunnerEnabled': {'default': True, 'description': "Http runner enabled flag, must be enabled for virtual services with 'TRANSACTIONAL' type.", 'title': 'Httprunnerenabled', 'type': 'boolean'}, 'messagingRunnerEnabled': {'anyOf': [{'type': 'boolean'}, {'type': 'null'}], 'default': None, 'description': "Messaging runner enabled flag for 'MESSAGING' type virtual services.", 'title': 'Messagingrunnerenabled'}, 'messagingProtocol': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'Messaging broker protocol. One of: IBM_MQ9_JMS, IBM_MQ9_NATIVE, ACTIVE_MQ_CLASSIC, ACTIVE_MQ_ARTEMIS, KAFKA.', 'title': 'Messagingprotocol'}, 'priorityMode': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'Transaction selection mode: DEFAULT or UNIQUE_PRIORITY.', 'title': 'Prioritymode'}, 'responseDelay': {'anyOf': [{'$ref': '#/$defs/ResponseDelay'}, {'type': 'null'}], 'default': None, 'description': 'Global response delay applied to all transactions in this virtual service.'}, 'recorderConfig': {'anyOf': [{'$ref': '#/$defs/RecorderConfig'}, {'type': 'null'}], 'default': None, 'description': 'Configuration for recording live broker traffic.'}, 'classPathJars': {'anyOf': [{'additionalProperties': True, 'type': 'object'}, {'type': 'null'}], 'default': None, 'description': 'Custom broker JAR paths, e.g. {"paths": ["string"]}.', 'title': 'Classpathjars'}, 'proxy': {'anyOf': [{'$ref': '#/$defs/ProxyConfiguration'}, {'type': 'null'}], 'default': None, 'description': 'Proxy configuration for the virtual service'}, 'brokerConfig': {'anyOf': [{'$ref': '#/$defs/BrokerConfiguration'}, {'type': 'null'}], 'default': None, 'description': 'Messaging broker connection configuration'}, 'assets': {'anyOf': [{'items': {'$ref': '#/$defs/AssignedAsset'}, 'type': 'array'}, {'type': 'null'}], 'default': None, 'description': 'List of assets', 'title': 'Assets'}}, 'required': ['id', 'name', 'serviceId', 'type', 'noMatchingRequestPreference', 'endpointPreference'], 'title': 'VirtualService', 'type': 'object'}
    Action result schema:
    {'properties': {'tracking_id': {'description': 'Action tracking id', 'title': 'Tracking Id', 'type': 'string'}}, 'required': ['tracking_id'], 'title': 'ActionResult', 'type': 'object'}

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
argsYes
actionYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
infoNoInfo messages
errorNoError message
totalNoTotal available records
resultNoResult
warningNoWarning messages
has_moreNoMore records per page to list

Tool Definition Quality

A4.1/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden of behavioral disclosure. It does well by explaining that deploy/stop/configure return trackingId and require polling, that update is partial, that flow_configuration is required for flow-based routing (with the consequence of empty mappings if omitted), and includes validation details. It could go further by stating permission requirements or side effects of unassign, but it provides substantial behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely long and includes a massive JSON schema dump at the end. While the action list is well-structured and the length is partly justified by the large number of actions, the embedded VirtualService schema is raw JSON that bloats the text and could be better referenced or placed in an output schema. It is not concise, though it is organized with clear headings and the key guidance is front-loaded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with 18 actions, an impoverished input schema, and no annotations, the description covers the essential operational details: all actions, parameters, defaults, protocol specifics, tracking behavior, and the response schema. It also provides the full VirtualService schema for understanding return values. Gaps remain around auth, error handling, and rate limits, but given the complexity, this is highly complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema is just `action` and freeform `args`, so the description is the only source of parameter meaning. It thoroughly documents each action's args, marks mandatory vs optional, provides defaults (e.g., limit=10, offset=0), enumerates protocol choices, and gives a detailed protocol-to-brokerConfig matrix. This fully compensates for the 0% schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Operations on messaging virtual services' and 'Use this when a user needs to create, update, deploy, or manage a messaging virtual service.' This provides a specific verb and resource, distinguishing it from transaction-focused siblings like virtual_services_messaging_transaction. However, it does not explicitly contrast with the generic virtual_services_virtual_service tool, so it loses a point for not fully differentiating.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives explicit usage guidance: 'Use this when a user needs to create, update, deploy, or manage a messaging virtual service.' This is clear context for when to invoke this tool. It does not mention when NOT to use it or name alternatives, so it falls short of a 5 but is well above vague guidance.

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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