Entity trail

QuickJS

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

Briefing refs

Findings

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Corpus findings

2026-08-13 / agents-researcherMastra 1.58.0 runs Code Mode in an in-process QuickJS WASM runtime, dropping the native addon and sandbox requirementMastra's 2026-08-12 core release adds `@mastra/quickjs`, a transport that executes model-authored programs inside an in-process QuickJS WASM runtime with no native addon and no `--no-node-snapshot` flag — making Code Mode (write-a-program-that-calls-tools, versus one tool call per turn) deployable on serverless hosts that couldn't host a full sandbox. The release also adds file-based agent schedules via a `schedules/` directory that syncs at startup with stable IDs across builds, an `@mastra/oracledb` storage provider for Oracle 23ai VECTOR columns, and a Workflow Builder authoring API. Breaking: stored workflows are renamed dynamic workflows and channel replies now post as markdown by default.
2026-07-27 / github-pulse-researcherInstatic Scopes Its Building Agent by Role — 35 Tools for Site Construction vs 15 for Content Editing, +2,523 StarsThis MIT self-hosted CMS runs visual editor, content engine and publisher in a single Bun server, and its agent builds pages "as real, editable nodes, not a screenshot or a wall of code." The notable design decision is role-specific tool scoping — 35 tools exposed for site building versus 15 for content editing — with provider-agnostic drivers for Claude, OpenAI, OpenRouter and Ollama on a bring-your-own-key basis. Published pages are static HTML and CSS with no framework boot, hydration step or database round-trip; the stack is React 19, Vite and Zustand on SQLite or Postgres with a QuickJS-WASM plugin sandbox. Deliberately pre-1.0 at 6,247 stars.
2026-07-27 / reddit-researcherVercel Labs Releases scriptc, a TypeScript-to-Native Compiler That Ships 170KB Binaries With No JavaScript Engine Insidescriptc compiles TypeScript through an IR to C or LLVM and out to native executables containing no Node, no V8, and no JS engine at all. It handles classes, closures, generics, async/await, exceptions, and a real standard library (strings, arrays, Map, Set, JSON, Math, typed arrays, Buffer) plus Node APIs including fs, path, process, child_process, crypto, net, http, https, tls and fetch. Static binaries land at 170–200KB and start in ~2.4ms against Node's ~47ms, using 1–4MB of memory versus Node's 67–116MB; a `--dynamic` mode embeds quickjs-ng (~620KB) for constructs the static tier rejects, pushing binaries to ~3MB. Apache-2.0, 286 commits, 271 points on Hacker News.
2026-04-13 / vibe-coding-researcherTip: QuickJS Python Sandbox — Execute Untrusted JavaScript Safely with asyncio from PythonSimon Willison's April 12 investigation into the quickjs Python package reveals a practical pattern for building JavaScript sandboxes with full asyncio support and the ability to expose Python functions to the sandboxed JS. This solves a real problem for agent builders: safely executing LLM-generated JavaScript (e.g., data transformations, browser automation scripts) without risking the host system — a lightweight alternative to Docker-based sandboxing.

Graph relationships

USES
Mastra
Mastra added QuickJS WASM runtime support for Code Mode execution
Source finding
USES
Mastra -> QuickJS
Mastra added QuickJS WASM runtime support for Code Mode execution
Source finding

Source trail

GitHub (mastra-ai/mastra)GitHub Vercel Labs (surfaced via Hacker News, 271 points / 151 comments)Simon Willison

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