AgentKit v0.3.0 Release Notes¶

Release Date: January 4, 2026

This release adds AgentCore-specific configuration options for protocol selection, authorization, memory, and multi-agent gateway support.

Highlights¶

Protocol configuration - Choose HTTP, MCP, or A2A communication protocols
Authorization support - Configure IAM or Lambda authorizers for inbound requests
Memory support - Enable persistent memory for stateful agents
Gateway configuration - Configure multi-agent routing gateways

New Features¶

Protocol Configuration¶

Agents can now specify their communication protocol:

agents:
  - name: research
    containerImage: ghcr.io/example/research:latest
    protocol: HTTP  # or MCP, A2A

agent := iac.AgentConfig{
    Name:           "research",
    ContainerImage: "ghcr.io/example/research:latest",
    Protocol:       "MCP",  // Model Context Protocol
}

Supported protocols:

Protocol	Description
`HTTP`	Standard HTTP/REST (default)
`MCP`	Model Context Protocol for tool integration
`A2A`	Agent-to-Agent Protocol for inter-agent communication

Authorization Configuration¶

Configure inbound authorization for agent endpoints:

agents:
  - name: secure-agent
    containerImage: ghcr.io/example/agent:latest
    authorizer:
      type: IAM  # or LAMBDA, NONE

agent := iac.AgentConfig{
    Name:           "secure-agent",
    ContainerImage: "ghcr.io/example/agent:latest",
    Authorizer: &iac.AuthorizerConfig{
        Type: "LAMBDA",
        LambdaARN: "arn:aws:lambda:us-east-1:123456789012:function:my-authorizer",
    },
}

Supported authorizer types:

Type	Description
`NONE`	No authorization (default)
`IAM`	AWS IAM-based authorization
`LAMBDA`	Custom Lambda authorizer

Memory Support¶

Enable persistent memory for stateful agents:

agents:
  - name: assistant
    containerImage: ghcr.io/example/assistant:latest
    enableMemory: true

Gateway Configuration¶

Configure multi-agent gateways for routing requests:

gateway:
  enabled: true
  name: my-gateway
  description: Multi-agent routing gateway
  targets:
    - research
    - synthesis
    - orchestration

config := &iac.StackConfig{
    StackName: "my-agents",
    Gateway: &iac.GatewayConfig{
        Enabled:     true,
        Name:        "my-gateway",
        Description: "Multi-agent routing gateway",
        Targets:     []string{"research", "synthesis"},
    },
}

New Types¶

AuthorizerConfig¶

type AuthorizerConfig struct {
    Type      string `json:"type" yaml:"type"`                           // IAM, LAMBDA, NONE
    LambdaARN string `json:"lambdaArn,omitempty" yaml:"lambdaArn,omitempty"`
}

GatewayConfig¶

type GatewayConfig struct {
    Enabled     bool     `json:"enabled,omitempty" yaml:"enabled,omitempty"`
    Name        string   `json:"name,omitempty" yaml:"name,omitempty"`
    Description string   `json:"description,omitempty" yaml:"description,omitempty"`
    Targets     []string `json:"targets,omitempty" yaml:"targets,omitempty"`
}

New Helper Functions¶

// ValidProtocols returns valid agent protocols
iac.ValidProtocols() // ["HTTP", "MCP", "A2A"]

// ValidAuthorizerTypes returns valid authorizer types
iac.ValidAuthorizerTypes() // ["IAM", "LAMBDA", "NONE"]

Enhanced Validation¶

Protocol values validated against allowed list
Authorizer type validated against allowed list
Lambda ARN required when authorizer type is LAMBDA
Gateway targets validated against defined agent names

Example Configuration¶

stackName: stats-agent-team
description: Statistics research and verification system

agents:
  - name: research
    containerImage: ghcr.io/plexusone/stats-agent-research:v0.5.1
    memoryMB: 512
    timeoutSeconds: 30
    protocol: HTTP
    description: Research agent

  - name: orchestration
    containerImage: ghcr.io/plexusone/stats-agent-orchestration:v0.5.1
    memoryMB: 512
    timeoutSeconds: 300
    protocol: HTTP
    isDefault: true
    authorizer:
      type: IAM

gateway:
  enabled: true
  name: stats-gateway
  targets:
    - research
    - orchestration

vpc:
  createVPC: true

observability:
  provider: opik
  project: stats-agent-team

Breaking Changes¶

None. This release is fully backward compatible with v0.2.0.

Migration Guide¶

No migration required. New fields are optional with sensible defaults:

protocol defaults to "HTTP"
authorizer defaults to nil (no authorization)
enableMemory defaults to false
gateway defaults to nil (no gateway)

Installation¶

go get github.com/plexusone/agentkit@v0.3.0

License¶

MIT License