periplon 0.2.0

Rust SDK for building multi-agent AI workflows and automation
Documentation 
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# Payment Processing - Secure payment workflow
name: "payment_processing"
version: "1.0"

agents:
  validation_agent:
    description: "Validates payment requests"
    model: "claude-sonnet-4-5"
    tools: ["Bash", "Read", "Write"]
    permissions:
      mode: "default"
      allowed_directories: ["/payments/validation"]
    max_turns: 12

  fraud_check_agent:
    description: "Performs fraud checks"
    model: "claude-sonnet-4-5"
    tools: ["Bash", "Read", "Write"]
    permissions:
      mode: "default"
      allowed_directories: ["/payments/fraud"]
    max_turns: 15

  fallback_fraud_agent:
    description: "Fallback fraud detection agent"
    model: "claude-sonnet-4-5"
    tools: ["Bash", "Read", "Write"]
    permissions:
      mode: "default"
      allowed_directories: ["/payments/fraud"]
    max_turns: 15

  processing_agent:
    description: "Processes payments"
    model: "claude-sonnet-4-5"
    tools: ["Bash", "Read", "Write"]
    permissions:
      mode: "default"
      allowed_directories: ["/payments/processing"]
    max_turns: 15

  settlement_agent:
    description: "Handles payment settlement"
    model: "claude-sonnet-4-5"
    tools: ["Bash", "Read", "Write"]
    permissions:
      mode: "default"
      allowed_directories: ["/payments/settlement"]
    max_turns: 12

  notification_agent:
    description: "Sends payment notifications"
    model: "claude-sonnet-4-5"
    tools: ["Bash", "Write"]
    permissions:
      mode: "default"
      allowed_directories: ["/payments/notifications"]
    max_turns: 8

tasks:
  validate_request:
    description: "Validate payment request format"
    agent: "validation_agent"
    priority: 1
    output: "validation.log"

  verify_account:
    description: "Verify account details"
    agent: "validation_agent"
    depends_on: ["validate_request"]
    output: "account_verification.log"

  check_balance:
    description: "Check account balance"
    agent: "validation_agent"
    depends_on: ["verify_account"]
    output: "balance_check.log"

  fraud_screening:
    description: "Screen for fraud indicators"
    agent: "fraud_check_agent"
    depends_on: ["check_balance"]
    output: "fraud_screening.log"
    on_error:
      retry: 2
      retry_delay_secs: 5
      fallback_agent: "fallback_fraud_agent"

  authorize_payment:
    description: "Authorize payment transaction"
    agent: "processing_agent"
    depends_on: ["fraud_screening"]
    output: "authorization.log"

  process_payment:
    description: "Process payment through gateway"
    agent: "processing_agent"
    depends_on: ["authorize_payment"]
    output: "processing.log"

  record_transaction:
    description: "Record transaction in ledger"
    agent: "settlement_agent"
    depends_on: ["process_payment"]
    output: "transaction_record.log"

  initiate_settlement:
    description: "Initiate settlement process"
    agent: "settlement_agent"
    depends_on: ["record_transaction"]
    output: "settlement.log"

  send_confirmation:
    description: "Send payment confirmation"
    agent: "notification_agent"
    depends_on: ["initiate_settlement"]
    output: "confirmation.log"

  update_balances:
    description: "Update account balances"
    agent: "settlement_agent"
    depends_on: ["initiate_settlement"]
    parallel_with: ["send_confirmation"]
    output: "balance_update.log"

workflows:
  process_payment:
    description: "Secure payment processing with fallback agents"
    steps:
      - stage: "validation"
        agents: ["validation_agent"]
        tasks:
          - validate_request:
              description: "Validate payment request format"
          - verify_account:
              description: "Verify account details"
          - check_balance:
              description: "Check account balance"
        mode: sequential

      - stage: "fraud_check"
        agents: ["fraud_check_agent", "fallback_fraud_agent"]
        tasks:
          - fraud_screening:
              description: "Screen for fraud indicators"
        mode: sequential
        depends_on: ["validation"]

      - stage: "authorization"
        agents: ["processing_agent"]
        tasks:
          - authorize_payment:
              description: "Authorize payment transaction"
          - process_payment:
              description: "Process payment through gateway"
        mode: sequential
        depends_on: ["fraud_check"]

      - stage: "settlement"
        agents: ["settlement_agent"]
        tasks:
          - record_transaction:
              description: "Record transaction in ledger"
          - initiate_settlement:
              description: "Initiate settlement process"
        mode: sequential
        depends_on: ["authorization"]

      - stage: "completion"
        agents: ["notification_agent", "settlement_agent"]
        tasks:
          - send_confirmation:
              description: "Send payment confirmation"
          - update_balances:
              description: "Update account balances"
        mode: parallel
        depends_on: ["settlement"]

    hooks:
      pre_workflow:
        - "echo 'Starting payment processing'"

      post_workflow:
        - "echo 'Payment processed successfully'"

      on_error:
        - "echo 'Payment processing failed at: $WORKFLOW_STAGE'"

tools:
  allowed: ["Bash", "Read", "Write"]