Picks up the forwarded-headers fix from ag-ui PR #1798
(https://github.com/ag-ui-protocol/ag-ui/pull/1798), which injects
agent.headers as config.configurable.copilotkit_forwarded_headers so
the LG dev server's HTTP-to-configurable bridge is no longer required
for X-AIMock-Context propagation. Closes the header-propagation gap
for showcase D5/D6 langgraph-typescript probes.
Picks up per-request header forwarding (onRequest hook + headerFactory)
and the prepareStream configurable+context partition fix from
ag-ui-protocol/ag-ui#1763. Together with copilotkit==0.1.91 on the
Python side (R3a), this unblocks D6 LGP/LGT header propagation.
The mergeConfigs() change in 0.0.33 also fixes the HTTP 400 from
langgraph-api 0.7+ when both configurable and context are present.
Bumped in two files:
- packages/runtime/package.json: 0.0.31 -> 0.0.33
- packages/sdk-js/package.json: 0.0.31 -> 0.0.33
Added @ag-ui/langgraph to minimumReleaseAgeExclude in .npmrc.
pnpm-lock.yaml regenerated.
Showcase auto-redeploys on merge via showcase_build.yml.
- Replace JS error.message mutation with wrapped Error + cause chain
(safe for frozen errors, shared references, non-Error throwables)
- Rename dispatched_end → end_attempted, set before END dispatch to
prevent duplicate TOOL_CALL_END when END partially flushes before throwing
- Switch JS randomId() (ck-prefixed) to randomUUID() for cross-SDK parity
with Python's str(uuid.uuid4())
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Wrap JS dispatchCustomEvent in try/catch that enriches error messages
with tool name and ID for debuggability
- Apply asyncio.shield to copilotkit_emit_message's post-dispatch sleep
to match copilotkit_emit_tool_call's behavior under task cancellation
- Reorder validation in LangGraph Python and JS to name → toolCallId →
args, matching CrewAI's order (cheap checks before serialization)
- Narrow AG-UI dispatcher's except clause around json.dumps from
Exception to (TypeError, ValueError), matching sibling SDK variants
- Add CancelledError propagation and warning-log tests for the shielded
sleep path
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Re-raise CancelledError after logging in langgraph copilotkit_emit_tool_call
to honor asyncio cancellation contract (was silently un-cancelling tasks)
- Move dispatched_end flag to after ToolCallEndEvent dispatch in AG-UI agent
so compensating END fires when END itself throws
- Add dispatched_end tracking to CrewAI variant to prevent double-END on
partial failure
- Add JSON.stringify(args) validation in JS SDK matching Python parity
- Add 4 CrewAI compensating-END tests and 1 JS serializability test
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Address code review findings across all three SDK variants:
- Shield asyncio.sleep(0.02) with asyncio.shield() so task cancellation
doesn't prevent returning the tool_call_id after dispatch
- Revert args validation to original permissiveness (JS: undefined-only
check, Python: no isinstance check) to avoid breaking existing callers
- Add upfront json.dumps() serializability check in Python variants
- Fix compensating TOOL_CALL_END double-emit by tracking dispatched_end
- Add compensating action_execution_end to CrewAI variant (queue_put is
non-atomic)
- Use exc_info=True in compensating-END error logging
- Export all exception types from copilotkit package root (__init__.py)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add missing @returns tag to JS copilotkitEmitToolCall JSDoc, and add
4 tests for the AG-UI compensating TOOL_CALL_END error-recovery path.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Address code review findings:
- Wrap AG-UI tool call dispatch in try/except with compensating
TOOL_CALL_END to prevent clients hanging on partial emission
- Reject non-dict/non-str args at the dispatch layer (lists, ints, None)
- Guard against None event value before calling .get()
- Fix docstring examples that reuse variable names (won't compile)
- Introduce CopilotKitError base class; all exceptions now inherit from
it; CopilotKitMisuseError inherits from both CopilotKitError and
ValueError
- Add missing validation tests for name and args across LangGraph and
CrewAI Python variants, plus AG-UI dispatch edge cases
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Address code review findings: stop mislabeling dispatch errors as
CopilotKitMisuseError in JS (let them propagate naturally), add
CopilotKitMisuseError(ValueError) to Python SDK, pre-serialize args
in AG-UI handler to prevent partial event emission, align whitespace
validation across all SDKs and the dispatch layer, tighten JS args
type to Record<string, unknown>, and add comprehensive negative tests
for AG-UI dispatch validation.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Restore CopilotKitMisuseError for dispatch failures in JS (was bare Error)
- Rename JS options.id to options.toolCallId for cross-SDK naming parity
- Add name/args validation to Python LangGraph and CrewAI variants
- Add defensive field validation in AG-UI dispatch handler
- Add missing CrewAI whitespace-only ID test
- Add JS dispatch failure test
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Align JS whitespace-only ID rejection with Python (.trim()), show
returned ID in docstring examples, strengthen CrewAI test assertions
to verify event payloads structurally, and stop miscategorizing
dispatch errors as CopilotKitMisuseError (preserve original stack).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Address review feedback on copilotkit_emit_tool_call:
- Add non-empty string validation for the tool call ID in all 3 SDKs
- Rename Python `id` param to `tool_call_id` to avoid shadowing the builtin
- Refactor JS 4th positional arg to options bag `{ id?: string }` for extensibility
- Document that the ID is also used as parentMessageId in AG-UI events
- Add JS tests for the new parameter (generated ID, custom ID, validation)
- Add Python validation tests (empty string, whitespace rejection)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Allow callers to supply a custom tool call ID for correlation,
idempotency, and observability. Falls back to uuid4 when omitted.
Applied consistently across Python LangGraph, Python CrewAI, and JS SDK.
Also returns the tool call ID from all variants for downstream reference.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Matches the CopilotKit runtime's extractForwardableHeaders() which
already forwards all x-* prefixed headers. Enables any custom
x-* header to propagate from browser through AG-UI to LLM calls.
Adds a `zodState` helper that attaches a `~standard.jsonSchema.input`
hook to Standard-Schema-compatible schemas (e.g. Zod). Without this,
Zod v4 fields carry `~standard.validate` + `vendor` only, so
LangGraph's `isStandardJSONSchema()` returns false and
`getJsonSchemaFromSchema` (called from `StateSchema.getJsonSchema`)
silently drops them from the graph's `output_schema`. AG-UI
`STATE_SNAPSHOT` events then filter the field out of the payload sent
to the frontend, even though the underlying thread state has it.
Wraps the internal `copilotkit` field in `copilotKitStateSchema` with
`zodState(...)` and exports the helper for user state schemas.
Bumps `@ag-ui/langgraph` to 0.0.30 and `@langchain/{core,langgraph}` /
`langchain` to the v1.1.41 / v1.2.9 / v1.3.4 line, which is the source
of the Zod v4 behavior this fix targets.
Recreates the sdk-js portion of #4320.
https://claude.ai/code/session_015B7RT1QxqyMmGDQYyaN7At
LangGraph now recommends the `StateSchema` API over `Annotation.Root` for
defining TypeScript agent state. Expose a `CopilotKitStateSchema` (and
`CopilotKitPropertiesSchema`) built on that API so TypeScript users can
compose CopilotKit state with the modern pattern:
import { StateSchema } from "@langchain/langgraph";
import { CopilotKitStateSchema } from "@copilotkit/sdk-js/langgraph";
import { z } from "zod";
export const AgentStateSchema = new StateSchema({
language: z.enum(["english", "spanish"]).default("english"),
...CopilotKitStateSchema.fields,
});
The existing `CopilotKitStateAnnotation` export continues to work; this
change is purely additive.
Docs under `docs/content/docs/integrations/langgraph/**` are migrated to
the new pattern. The `deepagents` docs pages are introduced in PR #3707;
the deprecation callout added there can be removed once both land.
## Release monorepo v1.56.3
**Scope:** `monorepo` | **Bump:** `patch`
---
### How this release process works
1. **This PR was created automatically** by the "release / create-pr"
workflow.
It bumped the `monorepo` packages to `1.56.3`
and generated AI-enhanced release notes.
2. **CI runs on this PR** — the full test suite (unit tests, lint, type
checks, build)
must pass before merging. This is the review gate.
3. **Review the release notes** in `release-notes.md` in this PR.
If a Notion draft was created, you can edit the release notes there
before merging.
4. **When this PR is merged**, the `release / publish` workflow
automatically:
- Builds all packages
- Publishes the `monorepo` packages to npm at version `1.56.3`
- Creates git tag `monorepo/v1.56.3`
- Creates a GitHub Release with the final release notes
### Before merging
- [ ] CI is green (tests, lint, types, build)
- [ ] Version bumps look correct
- [ ] Release notes are accurate (edit in Notion if a draft was created)
---
> **Do not merge until CI is fully green.** The full test suite runs
automatically on this PR.
- Keep deletion of sdk-python/copilotkit/langgraph_agent.py (deprecated LangGraphAgent
removed in this PR; main's unrelated bug fixes are superseded by our removal)
- Resolve poetry.lock conflict by taking main's ag_ui_langgraph 0.0.33
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
## Summary
- Remove `@langchain/community` from `@copilotkit/sdk-js`
peerDependencies — it's declared as `^0.3.58` but never imported
anywhere in the package
- This was the only constraint blocking `@langchain/core@1.x` resolution
for consumers using the LangGraph JS starter
## Context
`@copilotkit/sdk-js` has zero imports from `@langchain/community`. The
`^0.3.58` peer dep forced npm to resolve `@langchain/community@0.3.x`,
which transitively pulled in `@getzep/zep-cloud` → `langchain@0.3.x`,
conflicting with `sdk-js`'s own `langchain@>=1.0.0` peer requirement.
Removing the unused peer dep eliminates this resolution conflict
entirely.
## Test plan
- [ ] `npm install` in a fresh project using `@copilotkit/sdk-js`
resolves without peer dep warnings for `@langchain/community`
- [ ] Existing LangGraph JS starter installs cleanly
- [ ] No runtime behavior change (nothing imported from the removed dep)
@copilotkit/sdk-js declares @langchain/community as a peer dependency
but never imports from it. The ^0.3.58 constraint was the only thing
blocking @langchain/core@1.x resolution for consumers. Remove it
entirely since it serves no purpose.
BenTaylorDev