Struct AgentCard 

pub struct AgentCard {

    pub name: String,
    pub description: String,
    pub version: Option<String>,
    pub provider: Option<AgentProvider>,
    pub icon_url: Option<Url>,
    pub documentation_url: Option<Url>,
    pub supported_interfaces: Vec<AgentInterface>,
    pub capabilities: AgentCapabilities,
    pub security_schemes: Vec<SecurityScheme>,
    pub security: Vec<SecurityRequirement>,
    pub default_input_modes: Vec<ContentType>,
    pub default_output_modes: Vec<ContentType>,
    pub skills: Vec<AgentSkill>,
}

An A2A Agent Card — metadata describing an agent’s capabilities.

Published at /.well-known/agent-card.json for discovery.

Fields

name: String

Human-readable name of the agent.

description: String

Description of what the agent does.

version: Option<String>

Semantic version of the agent.

provider: Option<AgentProvider>

The provider/organization that created this agent.

icon_url: Option<Url>

URL to the agent’s icon/logo.

documentation_url: Option<Url>

URL to the agent’s documentation.

supported_interfaces: Vec<AgentInterface>

Interfaces supported by this agent (URLs + protocol bindings).

capabilities: AgentCapabilities

Capabilities declared by this agent.

security_schemes: Vec<SecurityScheme>

Security schemes supported by this agent.

security: Vec<SecurityRequirement>

Security requirements (references to security_schemes).

default_input_modes: Vec<ContentType>

Default input content types accepted.

default_output_modes: Vec<ContentType>

Default output content types produced.

skills: Vec<AgentSkill>

Skills (specific abilities) of this agent.

Implementations

impl AgentCard

pub async fn discover(base_url: &str) -> A2AResult<Self>

Discover an agent by fetching its Agent Card from the well-known endpoint.

Fetches {base_url}/.well-known/agent-card.json.

pub fn validate(&self) -> A2AResult<()>

Validate the agent card has required fields.

pub fn supports_streaming(&self) -> bool

Check if this agent supports streaming.

pub fn supports_push_notifications(&self) -> bool

Check if this agent supports push notifications.

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

Find a skill by ID.

pub fn primary_url(&self) -> Option<&Url>

Get the primary interface URL.

Trait Implementations

impl Clone for AgentCard

fn clone(&self) -> AgentCard

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AgentCard

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AgentCard

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for AgentCard

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl Serialize for AgentCard

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.