Add a new node/TypeScript-backed AWS Strands showcase integration at
showcase/integrations/strands-typescript.
Backend: a node/TS agent server (src/agent/) built on @strands-agents/sdk
`Agent`/`tool` wrapped in @ag-ui/aws-strands `StrandsAgent` and served via
@ag-ui/aws-strands/server (`createStrandsApp`/`addStrandsExpressEndpoint`),
modeled on the upstream ag-ui aws-strands TS example server and the
langgraph-typescript infra. A single shared agent at "/" serves most demos
(tools, shared state via toolBehaviors/stateContextBuilder, HITL,
sub-agents), with tool-free specialized agents mounted at /voice,
/byoc-hashbrown, /byoc-json-render. model-factory targets OpenAI chat
completions and honors OPENAI_API_KEY / OPENAI_BASE_URL so it works behind
the showcase aimock proxy. Node-based Dockerfile + entrypoint run the agent
server (:8000) alongside the Next.js frontend.
Frontend mirrors the strands (Python) sibling's demo set and the
langgraph-typescript conventions, with HttpAgent routes proxying to the TS
agent server.
Scope: base integration + standard demos only. A2UI / declarative-gen-ui /
a2ui-fixed-schema is intentionally excluded (no A2UI agents, routes, demos,
or deps) and layered on later.
Platform wiring (mirrors langgraph-typescript): docker-compose local/dev
services on host port 3119, local-ports.json, packages.json, slug-map.ts
(born-in-showcase), showcase_build.yml matrix + path filter + metadata,
shell-docs/dashboard registries, and a logo asset. The python strands
integration is untouched.
TanStack's chat() engine runs a multi-turn agent loop: after the model
returns tool calls, it tries to execute them via processToolCalls().
Frontend-only tools (like render_pie_chart) are unknown to TanStack, so
executeToolCalls() treats them as errors and buildToolResultChunks()
re-emits TOOL_CALL_END without a preceding TOOL_CALL_START. The ag-ui
verify middleware rejects this duplicate.
Fix: track a runFinished flag in convertTanStackStream and discard all
events after the first RUN_FINISHED, which marks the boundary between
the streaming pass and TanStack's internal tool execution loop.
Also adds built-in-agent to docker-compose.local.yml and local-ports.json.
The "Declarative Generative UI (A2UI — Custom Catalog)" single-file
prototype variant was a testing-only companion to the canonical
declarative-gen-ui 3-file BYOC pattern. Drop it everywhere:
- Delete src/app/demos/declarative-gen-ui-hardcoded/ cell directory
- Delete src/agents/a2ui_dynamic_hardcoded.py
- Remove from langgraph-python manifest.yaml (features + demos) and
langgraph.json graphs
- Remove from docs-links.json, route.ts (agent entry + a2ui agents
list), shared/feature-registry.json, shared/constraints.yaml
- Drop the Callout promoting it from a2ui/dynamic-schema.mdx
- Bump expected langgraph-python count 32 → 31 in generate-registry
test; regenerate all bundles
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds a single command to spin up the exact image Railway deploys,
for any of the 17 showcase packages, with a single shared .env:
./showcase/scripts/dev-local.sh up [<slug> ...] # all if empty
./showcase/scripts/dev-local.sh down|build|logs|ps|ports
Pieces:
- `docker-compose.local.yml` with a service per package. Ports come
from `shared/local-ports.json` (langgraph-python -> 3100, ...).
- `.env.example` as a commit-safe template. Real `.env` is gitignored
and fed to every container via `env_file`, so keys (OPENAI_API_KEY,
etc.) live in one place.
- `dev-local.sh` wraps `docker compose` and handles the
`shared_python/` / `shared_typescript/` staging step that CI does
before `docker build` (see showcase_deploy.yml).
- Staged `shared_*` dirs added to .gitignore.
Shell wiring:
- `shell/next.config.ts` reads `shared/local-ports.json` when
`SHOWCASE_LOCAL=1` is set and injects it as a public env.
- `/integrations/[slug]/[demo]/preview` uses that map to iframe
`http://localhost:<port>` instead of `integration.backend_url`.
Per-slug; any slug not running locally falls back to Railway.
Unset SHOWCASE_LOCAL -> prod behavior, unchanged.
Full workflow + prerequisites (Colima / Docker Desktop) documented in
showcase/README.md.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Ran Shem Tov