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    AI Agent Failure & Fallback Designer

    1

    Design resilient AI agents with structured fallback paths, retry logic, and human-in-the-loop escalation.

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    AI Agent Failure & Fallback Designer

    AI Agent Failure & Fallback Designer

    Example session with this skill installed

    I am building a Stripe-integrated refund agent. It uses an LLM to verify refund eligibility against a PDF policy and then calls the Stripe API. I need a failure and fallback design.

    • Read your context and instructions
    • Compiled the ai agent failure

    I have mapped the failure modes for your Stripe-integrated refund agent. The design focuses on preventing double-refunds and ensuring high-stakes decisions are verified by a human agent when policy confidence is low.

    Refund Agent Reliability Design

    Agent Reliability Summary

    • Primary workflow: Policy verification via RAG -> Stripe API Refund execution -> Confirmation email.
    • Highest-risk failure: Double-execution of refund due to Stripe API timeout during a non-idempotent call.
    • Most important fallback: Deterministic rule-check if LLM eligibility confidence is < 85%.
    • Human escalation boundary: Any refund exceeding $500 or cases with conflicting policy evidence.
    • Major reliability gaps: Potential for stale policy data if PDF retrieval fails.

    Failure Mode Matrix

    FailureDetectionImpactRetry?FallbackEscalationRecovery
    Stripe API TimeoutConnectionError / TimeoutCriticalNo (Risk)Queue for status checkAlwaysQuery Stripe for Charge ID status
    Eligibility HallucinationLow LogProbs / Format ErrorHighYes (1x)Deterministic keyword checkIf mismatch persistsLog mismatch and flag for review
    PDF Retrieval FailureEmpty context / 404MediumYes (3x)Use cached summaryNoReturn partial result: "Manual Check Req"

    Retry & Fallback Policy

    Primary (LLM Verify) -> Retry (Repair Prompt) -> Alternate (Hard-coded Logic) -> Human Review

    The transition to human review is mandatory for all Stripe 5xx errors to prevent accidental double-charging or missed refunds during downtime.

    Human Escalation Plan

    TriggerContext to TransferHuman DecisionAutomation State
    Refund > $500Customer ID, Transaction ID, Policy LinkApprove/DenyPaused; State Saved
    Stripe 402 (Declined)Stripe Error Log, Card Last 4Direct customer outreachTerminated

    Next steps

    1. Implement idempotency keys using the Stripe Transaction ID to prevent duplicate refunds.
    2. Configure a dead-letter queue for any refund requests that hit the "Critical" failure path.
    3. Set up a monitoring alert for "Human Escalation Rate" to tune the LLM's eligibility threshold.

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    About this skill

    The problem

    AI agents often fail silently, enter infinite retry loops, or perform irreversible actions when APIs timeout or models hallucinate. Without a structured fallback strategy, developers face unpredictable production outages and untrustworthy automated workflows.

    What it does

    • Identifies failure modes across tool calls, LLM responses, RAG retrieval, and authentication flows.
    • Classifies errors into recoverable, retryable, or terminal categories with assigned impact levels.
    • Designs multi-layered fallback paths, from model-based repairs to deterministic rule-based alternates.
    • Defines specific human-in-the-loop triggers for high-risk financial or security-sensitive actions.
    • Develops recovery test plans to verify agent behavior during API 5xx errors, rate limits, and schema mismatches.

    Why this beats prompting it yourself

    Most basic prompts forget to account for idempotency and state persistence during retries. This skill applies systematic engineering principles to ensure your agent fails safely, preserves partial work, and never repeats expensive or destructive API calls without authorization.

    Use cases

    • Designing error handling for a multi-agent autonomous coding assistant.
    • Setting up safety boundaries and human escalation for a customer support bot.
    • Building resilient RAG pipelines that degrade gracefully when retrieval quality is low.
    • Developing failure-tolerant agents for financial transaction processing and account management.

    Known limitations

    Does not provide the actual code implementation for specific backends. Requires a clear description of your agent's architecture to be effective.

    Requires a described agent architecture to function. Does not generate implementation code for specific SDKs like LangGraph or CrewAI.

    How to use

    1. 1

      Connect your agent to the Agensi MCP

      Copy the prompt and paste it into Claude, ChatGPT, Cursor or any agent that supports MCP. It sets up the connection for you. Manual setup

    2. 2

      Sign in to Agensi

      Your agent shows a sign-in link. Sign in and click Allow.

    3. 3

      Ask for what you need

      Your agent loads this skill and uses it on your task. It always asks before any payment.

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    What's inside

    Frequently Asked Questions

    This skill provides a systematic framework for mapping potential failure points in your agent's workflow and designing specific recovery protocols, such as retry logic and human-in-the-loop triggers, to prevent silent failures.

    The design principles are platform-agnostic and can be applied to any orchestration framework, including LangChain, AutoGen, CrewAI, or custom-built Python/Node.js agentic workflows.

    You will receive a comprehensive resiliency blueprint, including structured error classification tables, multi-stage fallback diagrams, and a testing plan to verify how your agent handles API outages or hallucinations.

    While this skill defines the logic and strategy for error handling, it provides conceptual architecture and pseudocode patterns rather than production-ready code for a specific programming language.

    Yes, it is specifically designed to identify high-risk actions—such as financial transactions or data deletions—and defines the exact parameters for when an agent must pause and request human intervention.

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