langchain-ai/deepagentsjs

The batteries included agent harness.

Stars: 1.6k
Forks: 272
Open beginner issues: 0
Indexed issues: 29
Avg merge: 1d 13h
Merged PRs (30d): 38

Dominant language: TypeScript
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 18, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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29 open issues indexed

skillsMiddleware skips skill.md discovery for explicitly scoped skill directories Open

langchain-ai/deepagentsjs#387 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 18, 2026
DeepAgents v3 stream can stop before tool execution when tool_calls are dropped after blank text Open

langchain-ai/deepagentsjs#548 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
QuickJS middleware drops LangGraph config for skillsBackend and PTC tool calls Open

langchain-ai/deepagentsjs#553 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
BigInt values crash QuickJS interpreter result serialization Open

langchain-ai/deepagentsjs#558 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
interruptOn is not browser compatible Open

langchain-ai/deepagentsjs#612 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Tool interrupt clears state history in browser Open

langchain-ai/deepagentsjs#616 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
agent.streamEvents missing output in browser Open

langchain-ai/deepagentsjs#617 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 18, 2026
Summarization middleware silently loses the conversation-history offload with state-backed backends (filesUpdate discarded) Open

langchain-ai/deepagentsjs#621 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 18, 2026
Bug: SummarizationMiddleware internal model call tokens leak into `agent.stream()` output Open

langchain-ai/deepagentsjs#629 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
read_file emits file/document blocks for non-document MIME types (e.g. application/octet-stream), causing Anthropic 400 media_type errors Open

langchain-ai/deepagentsjs#630 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
formatContentWithLineNumbers splits surrogate pairs in read_file output → invalid UTF-16 (Anthropic 400 "no low surrogate in string") Open

langchain-ai/deepagentsjs#631 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Filesystem permission layer matches globs against a non-canonical path: an intermediate symlinked directory bypasses `allow`/`deny` rules (directory traversal) Open

langchain-ai/deepagentsjs#633 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Filesystem permission layer is POSIX-`/`-only: a Windows real working directory (`D:\...`) cannot be expressed as a permission glob, forcing consumers into virtualMode Open

langchain-ai/deepagentsjs#634 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
deepagents-acp: FilesystemBackend is created without virtualMode — model-supplied absolute paths escape the workspace root Open

langchain-ai/deepagentsjs#653 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
deepagents-acp: ACP session/new cwd is ignored — workspaceRoot only ever comes from the server process Open

langchain-ai/deepagentsjs#654 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Unhandled tool exceptions (e.g. fs EACCES) abort the whole agent turn instead of returning a tool error the model can react to Open

langchain-ai/deepagentsjs#655 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Filesystem tools fail validation on weaker/custom models due to path/file_path parameter mismatch Open

langchain-ai/deepagentsjs#658 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Bug: `read_file` line numbers are duplicated when using a sandbox backend Open

langchain-ai/deepagentsjs#679 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
when I use `CompositeBackend`, read `memory` error, because`downloadFilesis` not implemented by`FilesystemBackend`, Open

bug

langchain-ai/deepagentsjs#704 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Resuming a subagent HITL interrupt only works if the model reconverges in exactly one step Open

langchain-ai/deepagentsjs#725 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
enforcePermission doc/code mismatch: unparsable paths throw instead of being silently skipped Open

langchain-ai/deepagentsjs#744 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 18, 2026
feat(deepagents): per-subagent recursionLimit override Open

langchain-ai/deepagentsjs#755 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
`StoreBackend` `ls`/`glob`/`grep` return files from sibling namespaces that share a string prefix, while `read` correctly does not Open

langchain-ai/deepagentsjs#772 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
DeltaChannel Open

langchain-ai/deepagentsjs#788 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 18, 2026
Per-call execute timeout Open

langchain-ai/deepagentsjs#798 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
@langchain/daytona pins vulnerable @daytona/sdk (OpenTelemetry Jaeger propagator DoS, GHSA-45rx-2jwx-cxfr) Open

langchain-ai/deepagentsjs#801 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Memory leak with dynamic sub agent middleware Open

langchain-ai/deepagentsjs#831 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
task tool doesn't work in browser builds — config not forwarded to getCurrentTaskInput() Open

langchain-ai/deepagentsjs#833 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
deepagents/browser has no non-deprecated way to store agent files Open

langchain-ai/deepagentsjs#834 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026

A short digest of beginner-friendly GitHub issues.