A2A Agent Card Compatibility Monitor10 nodes
A2A Agent Card Compatibility Monitor
Watch a remote A2A Agent Card for capability or authentication changes and publish a migration brief when the contract drifts.
Workflow at a glance
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#A2A Protocol#Agent2Agent#Agent Card#Multi-Agent#Compatibility#Agent Monitoring
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10 nodes · Free & source-available
A2A Agent Card Compatibility Monitor
Monitor the public contract of a remote Agent2Agent service before a protocol or capability change surprises your production workflows. This template fingerprints an A2A Agent Card, compares it with the last observed version, and explains meaningful drift.
What this workflow does
- AgentCardSchedule runs every six hours
- FetchRemoteAgentCard loads the remote Agent Card
- BuildAgentCardFingerprint hashes the current document
- LoadPriorAgentCard reads the previous fingerprint from Redis
- AgentCardChangedGate detects contract drift
- ExplainAgentCardChange reviews capabilities, skills, transports, and authentication declarations
- SaveAgentCardFingerprint stores the new state
- PostA2aMigrationBrief publishes the change in Discord
Use cases
- A2A protocol compatibility monitoring
- Remote agent capability drift detection
- Multi-agent integration change alerts
- Agent Card authentication review
Setup
Replace the sample Agent Card URL with the discovery URL for your remote agent. Connect Redis, an LLM credential, and Discord. The monitor detects public contract changes, but it does not replace end-to-end task tests.
How to import this template
- 1Click Import → Copy JSON on this page.
- 2Open your Heym and navigate to a workflow canvas.
- 3PressCmd+V/Ctrl+V— nodes appear instantly.
- 4Add your API keys in the node config panels and click Run.
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