Prompt Chain

Test AWS Bedrock Agents with Promptfoo

Promptfoo config for evaluating AWS Bedrock Agents, covering single-agent and supervisor-routed multi-agent setups.

Works with aws bedrock

91
Spark score
out of 100
Updated 13 days ago
Source checked Sep 7, 2026
Version code-scan-action-0.2

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Why it matters

Evaluate and test deployed AI agents on AWS Bedrock, covering both single and multi-agent configurations.

Outcomes

What it gets done

01

Test single-agent AWS Bedrock deployments.

02

Evaluate multi-agent AWS Bedrock scenarios.

03

Automate AI agent testing and validation.

Install

Add it to your toolbox

Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.

Run in your project directory:

curl -fsSL https://spark.entire.vc/get/pfoo-bedrock-agents | bash

After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.

Reports

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Overview

Bedrock Agents

A Promptfoo example for testing AWS Bedrock Agents. It ships two configs: one for a single agent's responses and memory retention, and one for a supervisor-routed multi-agent system with a technical, billing, and product agent, testing cross-functional routing and escalation. Reach for the single-agent config to test one Bedrock Agent's responses and memory retention; reach for the multi-agent config when you have a supervisor system routing to specialist agents.

What it does

This Promptfoo example tests AWS Bedrock Agents via the bedrock-agent:<id> provider, and it covers two distinct setups: a single-agent config (agentId, agentAliasId, region, plus optional sessionId, enableTrace, and memoryId for SHORT_TERM_MEMORY or LONG_TERM_MEMORY) and a multi-agent system config that wires up several named providers - a technical support agent, a billing agent, and a product agent - each with its own agent ID and alias. The multi-agent example models a customer-support architecture: queries first hit a Supervisor Agent, which monitors and routes them out to whichever specialist agent (technical, billing, or product) should handle the request.

The test suite has two tiers matching the two configs. The single-agent config includes tests for basic agent responses, tool/function calling (e.g. a calculator), memory retention, and multi-turn conversations. The multi-agent config's tests instead target the supervisor system: specialized agent capabilities per domain (technical, billing, product), cross-functional issue handling, agent collaboration and coordination, escalation management, and performance/latency validation.

When to use - and when NOT to

Use the single-agent config as a template for testing one Bedrock Agent's responses and memory retention across turns. Use the multi-agent config specifically when you need to test a supervisor-routed system of specialist agents - cross-functional routing and escalation are exactly what its test set is built to exercise, and the single-agent config has no equivalent for that. Don't reach for the multi-agent setup if you only have one deployed agent; the basic single-agent provider config covers that case on its own.

Inputs and outputs

Input: the YAML config (promptfooconfig.yaml for single-agent, promptfooconfig.multi-agent.yaml for the supervisor system) naming each provider's agent ID, alias, and region, plus AWS credentials supplied via environment variables, an AWS CLI profile, or an IAM role. The AWS identity used needs bedrock:InvokeAgent permission on the target agent ARNs. Output: Promptfoo's evaluation report, scoring each test in the suite above.

npx promptfoo eval -c promptfooconfig.multi-agent.yaml

Integrations

Uses Promptfoo's bedrock-agent provider to call AWS Bedrock Agents directly, authenticating via AWS's default credential chain, explicit access keys, or an AWS CLI profile. The multi-agent config integrates multiple Bedrock Agents behind one Supervisor Agent, so it exercises AWS's own agent-routing/collaboration behavior rather than anything Promptfoo adds on top.

Who it's for

Teams building on AWS Bedrock Agents who want to test both a single agent's responses and memory retention, and - where they've built a supervisor-routed system of specialist agents - whether cross-functional routing, escalation, and collaboration behave correctly.

Source README

amazon-bedrock/agents (AWS Bedrock Agents Example)

This example demonstrates how to use AWS Bedrock Agents with promptfoo to test and evaluate deployed AI agents, including both single-agent and multi-agent scenarios.

You can run this example with:

npx promptfoo@latest init --example amazon-bedrock/agents
cd amazon-bedrock/agents

Prerequisites

  1. An AWS account with Bedrock Agents access

  2. One or more deployed Bedrock agents (get agent IDs from the AWS Console)

  3. AWS credentials configured (via environment variables, AWS CLI, or IAM role)

  4. Install the required AWS SDK:

    npm install @aws-sdk/client-bedrock-agent-runtime
    

Setup

  1. Get your Agent ID(s):

    • Go to the AWS Bedrock Console
    • Navigate to Agents
    • Copy your agent ID(s) (format: ABCDEFGHIJ)
  2. Configure AWS Credentials (choose one method):

    Via environment variables:

    export AWS_ACCESS_KEY_ID=your_access_key
    export AWS_SECRET_ACCESS_KEY=your_secret_key
    export AWS_REGION=us-east-1
    

    Via AWS CLI profile:

    aws configure --profile my-bedrock-profile
    

    Via IAM role (if running on EC2/Lambda)

  3. Choose your configuration:

    • promptfooconfig.yaml: Basic single-agent configuration
    • promptfooconfig.multi-agent.yaml: Advanced multi-agent system configuration

Running the Examples

Single Agent Example

# Run basic agent evaluation
npx promptfoo eval -c promptfooconfig.yaml

# View results in the web UI
npx promptfoo view

Multi-Agent Example

# Run multi-agent system evaluation
npx promptfoo eval -c promptfooconfig.multi-agent.yaml

# View results in the web UI
npx promptfoo view

Configuration Options

Basic Usage

providers:
  - bedrock-agent:YOUR_AGENT_ID

Advanced Single Agent Configuration

providers:
  - id: bedrock-agent:my-agent
    config:
      agentId: YOUR_AGENT_ID
      agentAliasId: PROD_ALIAS # Optional: specific version/alias
      region: us-east-1 # AWS region
      sessionId: session-123 # Maintain conversation state
      enableTrace: true # Get detailed execution traces
      memoryId: SHORT_TERM_MEMORY # or LONG_TERM_MEMORY

Multi-Agent System Configuration

providers:
  # Technical Support Agent
  - id: tech-agent
    provider: bedrock-agent:TECH_AGENT_ID
    config:
      agentId: TECH_AGENT_ID
      agentAliasId: TECH_ALIAS_ID
      region: us-east-1
      enableTrace: true
      memoryId: LONG_TERM_MEMORY

  # Billing Agent
  - id: billing-agent
    provider: bedrock-agent:BILLING_AGENT_ID
    config:
      agentId: BILLING_AGENT_ID
      agentAliasId: BILLING_ALIAS_ID
      region: us-east-1
      enableTrace: true

Features

Session Management

The provider supports maintaining conversation state across multiple interactions:

config:
  sessionId: my-session-123 # Use the same session ID for related queries

Memory Integration

Enable agent memory for context-aware responses:

config:
  memoryId: LONG_TERM_MEMORY # or SHORT_TERM_MEMORY

Trace Information

Get detailed execution traces including tool calls and reasoning:

config:
  enableTrace: true # Response will include trace metadata

Testing Scenarios

Single Agent Tests

The basic config includes tests for:

  • Basic agent responses
  • Tool/function calling (e.g., calculator)
  • Memory retention
  • Multi-turn conversations

Multi-Agent System Tests

The multi-agent config includes tests for:

  • Specialized agent capabilities (technical, billing, product)
  • Cross-functional issue handling
  • Agent collaboration and coordination
  • Escalation management
  • Performance and latency validation

Multi-Agent System Architecture

The multi-agent example demonstrates a customer support system with specialized agents:

Customer Query
     ↓
[Supervisor Agent] ← Monitors & Routes
     ↓
┌─────────────────┬─────────────────┬──────────────────┐
│  Tech Agent     │  Billing Agent  │  Product Agent   │
│  (Technical)    │  (Payments)     │  (Recommendations)│
└─────────────────┴─────────────────┴──────────────────┘

Troubleshooting

  1. Authentication Error: Ensure AWS credentials are properly configured
  2. Agent Not Found: Verify the agent ID and region
  3. Permissions Error: Check IAM permissions for bedrock:InvokeAgent
  4. Timeout: Large agent responses may take time; adjust timeout if needed
  5. Multi-Agent Issues: Ensure all agent IDs and aliases are correct in the config

IAM Permissions

Your AWS credentials need the following permissions:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": ["bedrock:InvokeAgent"],
      "Resource": "arn:aws:bedrock:*:*:agent/*"
    }
  ]
}

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FAQ

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