23a3b24a01
feat(showcase/integrations): shared-state-read-write + subagents demos across 15 packages
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Adds real working Shared State (Read+Write) and Sub-Agents demos to 15
showcase integrations, mirroring the canonical langgraph-python and
google-adk reference implementations. Fills rows previously empty on
the showcase coverage dashboard.
Packages: ag2, agno, claude-sdk-python, claude-sdk-typescript,
crewai-crews, langgraph-fastapi, langgraph-typescript, langroid,
llamaindex, mastra, ms-agent-dotnet, ms-agent-python, pydantic-ai,
spring-ai, strands. (built-in-agent landed independently on main as
PR #4321 — its variant is canonical; this PR no longer touches it.)
Per-package deliverables: framework-native backend agents
(preferences-injection middleware/callback + set_notes tool;
supervisor + 3 sub-agents wired as tools with running -> completed
/failed delegation log); frontend page.tsx + preferences-card.tsx /
notes-card.tsx for SSRW and delegation-log.tsx for subagents — wired
to useAgent({ updates: [OnStateChanged] }); manifest entries; runtime
route registration + per-package agent server config; real QA
scripts.
Includes targeted hardening fixes from a 7-agent code-review loop:
- Sub-agent failure paths now correctly emit status: "failed"
(previously hardcoded "completed" or unreachable in
mastra/strands/langgraph-fastapi/langgraph-typescript/ag2)
- Parallel-tool-call delegation race fixed in langgraph-fastapi
(Annotated[list, add]) and langgraph-typescript (concat reducer)
- Silent data loss eliminated in
claude-sdk-python/claude-sdk-typescript/crewai-crews — empty
JSON.parse catches now log + emit error events
- ms-agent-dotnet set_notes writes to per-thread slot via AsyncLocal
- mastra working-memory writes are deterministic via
src/mastra/tools/working-memory.ts helper
- spring-ai tool-call envelope ids match supervisor's tc.id() and
AG-UI event ordering reordered; CopyOnWriteArrayList for
parallel-call safety
- Stack trace + raw error message leaks scrubbed across 8+ Next.js
routes — log server-side with errorId + return generic envelope
- Sub-agent calls no longer block event loops in ag2
(asyncio.to_thread), langroid (llm_response_async), pydantic-ai
(async run + async tools)
- langroid lru_cache cross-request contamination dropped
- Numerous smaller items: claude-sdk-python invalid model id, Callable
annotation, /health endpoint exposed; crewai-crews supervisor
no longer resets delegations every turn; pydantic-ai snapshot uses
model_dump()
CI fixes folded in:
- crewai-crews test_forwarded_props: extend the stubbed
ag_ui_crewai.endpoint module to expose
add_crewai_flow_fastapi_endpoint and add stub
agents.shared_state_read_write / agents.subagents modules
- generate-catalog test: bump crewai-crews wired-cell expectation
28 -> 30; replace hardcoded total-wired count with an invariant
(wired + stub + unshipped = 737) plus a lower-bound floor
- oxfmt run on the qa/shared-state-read-write.md files in mastra +
spring-ai
Rebased onto latest main (post showcase/packages -> showcase/integrations
rename + post built-in-agent landing). Original blitz history
preserved at the blitz-pre-rebase-snapshot tag.
Known follow-ups (deferred to follow-up PR):
- agno sync sub_agent.run() blocks event loop (perf only)
- ms-agent-python asyncio thread-fallback fragility
- llamaindex initial-state coercion when UI clears state
- Manifest highlight audit (langgraph-typescript headless-complete,
langgraph-fastapi byoc-* missing route.ts highlights)
- agno hitl-in-chat declared in demos but not features; duplicate
/demos/hitl-in-chat route
- langgraph-typescript server.mjs graphSpec only registers 3 graphs
vs 23 in langgraph.json (pre-existing)
- mastra hitl legacy demo missing from features list
- claude-sdk-python agents/agent.py line 474 also has the legacy
claude-opus-4-5 default
- PARITY_NOTES vs manifest mismatches for hitl-in-app across
spring-ai/agno/ag2 (pre-existing)
- spring-ai a2ui-fixed-schema missing from generative_ui list
2026-04-28 18:36:13 +02:00
Alem Tuzlak