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OSS2026-09-21 · source-backed
Pi bundles a unified LLM API, agent loop, TUI and coding-agent CLI, gained 438 stars in a day, and sits at 108,010 stars with only 227 open issues, which is the ratio that caught my eye. It cut v0.86.0 on September 19 at 23:15 and v0.86.1 twelve hours later. The extension model is the useful design: TypeScript extensions, skills, prompt templates and themes bundle into Pi Packages shipped over npm or git, and the agent runs in four modes, interactive, print/JSON, RPC and embedded SDK.
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CLI, IDE extension, macOS app, and Codex Web all sit on the same harness, linked by a bidirectional JSON-RPC-over-stdio process that hosts core threads and translates client requests into Codex operations. Partners have written clients in Go, Python, TypeScript, Swift, and Kot...
430,000 lines of TypeScript out. More than 800,000 lines of production Rust in. 128 incremental pull requests, 135 releases, May through August 2026, one primary human developer, and agents writing most of the code. GitHub published the full writeup on its engineering blog, an...
The July 28 MCP specification revision replaced session-based transport with "stateless, self-contained requests" and per-request capability negotiation. The old dance was initialize, receive an Mcp-Session-Id, then call your tool. Two round trips minimum, plus server-side sta...
Multi-platform SDK (TypeScript, Python, Go, C#) for embedding GitHub Copilot Agent directly into your applications via JSON-RPC. BYOK support lets you redirect to Foundry Local for fully offline operation. MIT license, technical preview. GitHub
PR #3372, merged September 18, updates the spec docs now that SEP-2640 is Final and the official extension is published at modelcontextprotocol/ext-skills, distributing skills through MCP Resources primitives. The docs separate publication from adoption explicitly: the Go, Pyt...
google-labs-code/design.md defines the spec at 26,805 stars (Apache-2.0): YAML front matter carrying color, typography, spacing, radius and component tokens plus markdown rationale sections, with a @google/design.md CLI offering lint (11 rules including WCAG contrast checks, e...
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