agent

A2A v1.0 Agent Metadata Types

Complete AgentCard redesign per A2A Protocol v1.0.0 specification.

Structs

`AgentSkill`

Agent Skill (v1.0)

Fields

Field	Type	Description
`id`	`String`
`name`	`String`
`description`	`String`
`tags`	`Option<Vec<String>>`
`examples`	`Option<Vec<String>>`
`input_modes`	`Option<Vec<String>>`
`output_modes`	`Option<Vec<String>>`
`security_requirements`	`Option<Vec<SecurityRequirement>>`

Methods

`with_examples`

fn with_examples(self, examples: Vec<String>) -> Self

`with_example`

fn with_example<impl Into<String>>(self, example: impl Into) -> Self

`with_tags`

fn with_tags(self, tags: Vec<String>) -> Self

`supports_json_input`

fn supports_json_input(&self) -> bool

`AgentInterface`

Agent Interface (v1.0) — how to reach this agent.

Fields

Field	Type	Description
`url`	`String`
`protocol_binding`	`String`
`tenant`	`Option<String>`
`protocol_version`	`Option<String>`

`AgentCapabilities`

Agent Capabilities (v1.0)

Fields

Field	Type	Description
`streaming`	`bool`
`push_notifications`	`bool`
`extensions`	`Option<Vec<AgentExtension>>`
`extended_agent_card`	`bool`

`AgentExtension`

Agent Extension (v1.0)

Fields

Field	Type	Description
`uri`	`String`
`description`	`Option<String>`
`required`	`bool`
`params`	`Option<serde_json::Value>`

`AgentProvider`

Agent Provider (v1.0)

Fields

Field	Type	Description
`url`	`Option<String>`
`organization`	`String`

`AgentCardSignature`

JWS signature for agent card integrity.

Fields

Field	Type	Description
`protected`	`String`
`signature`	`String`
`header`	`Option<serde_json::Value>`

`AgentCard`

Agent Card — v1.0 top-level metadata object.

Fields

Field	Type	Description
`name`	`String`
`description`	`Option<String>`
`version`	`Option<String>`
`supported_interfaces`	`Option<Vec<AgentInterface>>`
`capabilities`	`Option<AgentCapabilities>`
`skills`	`Vec<AgentSkill>`
`default_input_modes`	`Option<Vec<String>>`
`default_output_modes`	`Option<Vec<String>>`
`security_schemes`	`Option<HashMap<String, SecurityScheme>>`
`security_requirements`	`Option<Vec<SecurityRequirement>>`
`signatures`	`Option<Vec<AgentCardSignature>>`
`icon_url`	`Option<String>`
`provider`	`Option<AgentProvider>`
`documentation_url`	`Option<String>`
`metadata`	`Option<HashMap<String, serde_json::Value>>`

Methods

`new`

fn new<impl Into<String>>(name: impl Into) -> Self

Minimal card with just a name.

`with_capability`

fn with_capability<impl Into<String>, impl Into<String>>(self, method: impl Into, description: impl Into) -> Self

Stores the method name and description in the card’s pf:methods metadata map. Used by A2AProtocol::register_method to keep the agent card in sync with the method registry.

`supports_method`

fn supports_method(&self, method: &str) -> bool

`get_method_description`

fn get_method_description(&self, method: &str) -> Option<String>

`add_skill`

fn add_skill(self, skill: AgentSkill) -> Self

`get_skill`

fn get_skill(&self, skill_id: &str) -> Option<&AgentSkill>

`get_skills_by_input_mode`

fn get_skills_by_input_mode(&self, input_mode: &str) -> Vec<&AgentSkill>

`supports_structured_skills`

fn supports_structured_skills(&self) -> bool