chore(deploy): remove deploy as a2a

[icecrasher321]

Summary

Cleanup deploy as A2A. Update block to latest version of protocol.

Type of Change

• Other: Code Cleanup

Testing

Tested manually

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview, Comment	Jun 29, 2026 2:53am

[cursor]

PR Summary

Medium Risk
Large removal of public A2A serve endpoints and deploy UI is a breaking change for anyone exposing workflows as A2A agents; remaining tool route behavior and response shapes also changed.

Overview
This PR drops “deploy as A2A” as a workflow deployment surface. The agent management and JSON-RPC serve APIs under /api/a2a/agents and /api/a2a/serve, the deploy modal A2A tab (A2aDeploy), and related UI hooks are deleted. Docs and product copy no longer describe A2A as a deployment channel (deploy modal tabs, enterprise Deploy Tabs, logs trigger lists, etc.).

The A2A integration block for talking to external agents stays, but the tool layer is trimmed and consolidated: push-notification, resubscribe, and related routes are removed; send message, get/cancel task, and get agent card now go through @/lib/a2a/client with clearer outputs, 502 errors from upstream agents, and file attachments on send (storage access + size limits).

Documentation moves from per-locale tools/a2a pages to en/integrations/a2a, documenting only the four remaining tools (no push/resubscribe). Locale tool pages and the docs A2AIcon export are removed.

^{Reviewed by Cursor Bugbot for commit 790f04b. Configure here.}

[greptile-apps]

Greptile Summary

This PR removes the A2A deployment surface while keeping A2A as an external-agent block. The main changes are:

• Removed A2A serve routes, deploy UI, lifecycle cleanup, and database tables.
• Re-added the A2A block with send, get task, cancel task, and get agent card operations.
• Updated workflow trigger contracts, logs filters, docs, and generated metadata.

Confidence Score: 4/5

This is close, but the legacy A2A operation path should be fixed before merging.

• Saved workflows can still contain removed A2A operation ids.
• The updated block passes those ids directly to the executor.
• The affected workflow fails with a missing-tool error instead of a controlled unsupported-operation result.

apps/sim/blocks/blocks/a2a.ts

Important Files Changed

Filename	Overview
apps/sim/blocks/blocks/a2a.ts	Re-adds the A2A block with fewer operations, but persisted removed operation ids can still be serialized into missing tools.
packages/db/migrations/0252_remove_a2a.sql	Drops serve-side A2A persistence and the deprecated usage counter.
apps/sim/lib/api/contracts/workflows.ts	Removes a2a from the workflow trigger type contract.

_{Reviews (2): Last reviewed commit: "add block" | Re-trigger Greptile}

[icecrasher321]

@greptile

[icecrasher321]

bugbot run

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

Comment @cursor review or bugbot run to trigger another review on this PR

^{Reviewed by Cursor Bugbot for commit 790f04b. Configure here.}