Model-facing same-session goal tools with execution-time authority checks

Model-facing web tools (web_search, web_fetch) over the DeepSeek Harness web capability seam (ctx.web)

Abstract spill storage seam (ctx.spillStore) for the DeepSeek Harness — save oversized tool text and return a retrieval locator

PostHog Node.js AI integrations

In-process fork subagent backend: runs a child agent seeded with a prefix of the parent's log

Client Tool call-tree renderer and keyed per-tool presentation slot

CLI tool to update caniuse-lite to refresh target browsers from Browserslist config

The shared dsh core as a profile bundle: every profile's first patch layer, inserting the base plugin rows over the empty profile root

GitLab Duo provider for Vercel AI SDK

Model-facing owner-scoped persistent Bash tool backed by the Harness PTY service

Agent-plane presentation selector: composes one agent's tools as Code Mode, native, or both

Race-fenced same-session goal-round driver

Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.

Abstract web access capability seam (ctx.web) for the DeepSeek Harness — search/fetch provider registry, registration-order-independent selection, request/result vocabulary, and the WebError taxonomy

Abstract filesystem capability seam (ctx.fs) for the DeepSeek Harness — vocabulary types, the FileSystem service (text IO + optional version-guarded atomic mutations), and the fs/* policy event vocabulary

Child-scoped report tool over ctx.subagents continuations

Model-facing view, create, literal replace, and line insert tool over the Harness filesystem service

Code Mode: use LLMs to generate executable code that performs tool calls

Model-facing skill loading tool for the DeepSeek Harness

Type-safe TypeScript AI SDK for streaming chat, tool calling, agents, structured outputs, and multimodal generation.