--- id: "nr-coding-agent-sessions-are-becoming-shared-cross-harness-objects-561ff3" slug: "coding-agent-sessions-are-becoming-shared-cross-harness-objects-561ff3" type: "raw_signal" title: "Coding agent sessions are becoming shared, cross-harness objects" description: "Delta now lets teammates share and join live Claude Code threads, and Ponte gives two developers' agents an encrypted MCP channel to message each other." observed_at: "2026-10-28" record_date: "2026-10-28" date_kind: "observed_at" novelty: "notable" source_platform: "newruntime.com" topics: ["claude","claude-code","codex"] entities: ["Delta","Zed Industries","Claude Code","Claude","Delta CLI","Pi","DeltaDB","Ponte","Davide Conte","Codex"] related_patterns: ["harness-architecture-outlives-model-choice","agent-ready-software-exposes-capabilities","agent-protocols-become-interoperability-layer"] source_url: "https://delta.dev/blog/claude-code-multiplayer" source_urls: ["https://delta.dev/blog/claude-code-multiplayer","https://delta.dev/cli","https://github.com/davideconte/ponte","https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.2.2-alpha.2","https://vercel.com/changelog/harness-agent-image-inputs","https://github.com/humanlayer/humanlayer","https://openbot.run/"] why_it_matters: "Delta now lets teammates share and join live Claude Code threads, and Ponte gives two developers' agents an encrypted MCP channel to message each other. DeepSeek Harness can hand work to Codex or Claude CLI subagents, Vercel's HarnessAgent runs over every major harness adapter, and HumanLayer coordinates Claude Code, Codex, OpenCode and Pi across machines. Builders should plan for agent sessions that get handed off between people and harnesses, not ones owned by a single user in a single tool." verification_level: "source-linked" signal_type: "synthesis" synthesis_of: [{"slug":"delta-from-zed-makes-claude-code-sessions-multiplayer-39fadc","title":"Delta (from Zed) makes Claude Code sessions multiplayer with /delta share","url":"https://newruntime.com/posts/delta-from-zed-makes-claude-code-sessions-multiplayer-39fadc/"},{"slug":"delta-cli-sync-and-share-agent-sessions-from-38699e","title":"Delta CLI — Sync and share agent sessions from your terminal","url":"https://newruntime.com/posts/delta-cli-sync-and-share-agent-sessions-from-38699e/"},{"slug":"ponte-open-source-end-to-end-encrypted-channel-eb44a0","title":"Ponte: open-source, end-to-end encrypted channel that lets two developers' coding agents message each other over MCP","url":"https://newruntime.com/posts/ponte-open-source-end-to-end-encrypted-channel-eb44a0/"},{"slug":"deepseek-harness-ships-dsh-v0-2-2-alpha-ca4e22","title":"DeepSeek Harness ships dsh-v0.2.2-alpha.2 with plugin updates, six new UI languages and an experimental Codex/Claude CLI subagent tool","url":"https://newruntime.com/posts/deepseek-harness-ships-dsh-v0-2-2-alpha-ca4e22/"},{"slug":"vercel-ai-sdk-harnessagent-now-accepts-image-inputs-2ddc63","title":"Vercel AI SDK HarnessAgent now accepts image inputs across all harness adapters","url":"https://newruntime.com/posts/vercel-ai-sdk-harnessagent-now-accepts-image-inputs-2ddc63/"},{"slug":"humanlayer-the-best-way-to-get-ai-coding-5e49d4","title":"humanlayer: The best way to get AI coding agents to solve hard problems in complex codebases","url":"https://newruntime.com/posts/humanlayer-the-best-way-to-get-ai-coding-5e49d4/"},{"slug":"openbot-is-a-source-available-desktop-app-from-d564db","title":"OpenBot is a source-available desktop app from Nightly Labs, operating as Synthetify Labs, that runs multiple persistent AI agents from one interface.","url":"https://newruntime.com/posts/openbot-is-a-source-available-desktop-app-from-d564db/"}] schema_version: "newruntime-agent-readable-v0.2" stable_id: "signal:coding-agent-sessions-are-becoming-shared-cross-harness-objects-561ff3" retrieval_nugget: "Delta now lets teammates share and join live Claude Code threads, and Ponte gives two developers' agents an encrypted MCP channel to message each other." status: "published" visuals: [] editor: {"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]} routes: {"html":"https://newruntime.com/signals/coding-agent-sessions-are-becoming-shared-cross-harness-objects-561ff3/","markdown":"https://newruntime.com/signals/coding-agent-sessions-are-becoming-shared-cross-harness-objects-561ff3.md","json":"https://newruntime.com/signals/coding-agent-sessions-are-becoming-shared-cross-harness-objects-561ff3.json"} --- # Coding agent sessions are becoming shared, cross-harness objects ## Retrieval answer Delta now lets teammates share and join live Claude Code threads, and Ponte gives two developers' agents an encrypted MCP channel to message each other. Delta now lets teammates share and join live Claude Code threads, and Ponte gives two developers' agents an encrypted MCP channel to message each other. DeepSeek Harness can hand work to Codex or Claude CLI subagents, Vercel's HarnessAgent runs over every major harness adapter, and HumanLayer coordinates Claude Code, Codex, OpenCode and Pi across machines. Builders should plan for agent sessions that get handed off between people and harnesses, not ones owned by a single user in a single tool. From the Field Notes: - [Delta (from Zed) makes Claude Code sessions multiplayer with /delta share](https://newruntime.com/posts/delta-from-zed-makes-claude-code-sessions-multiplayer-39fadc/) (2026-10-27) - [Delta CLI — Sync and share agent sessions from your terminal](https://newruntime.com/posts/delta-cli-sync-and-share-agent-sessions-from-38699e/) (2026-10-28) - [Ponte: open-source, end-to-end encrypted channel that lets two developers' coding agents message each other over MCP](https://newruntime.com/posts/ponte-open-source-end-to-end-encrypted-channel-eb44a0/) (2026-10-27) - [DeepSeek Harness ships dsh-v0.2.2-alpha.2 with plugin updates, six new UI languages and an experimental Codex/Claude CLI subagent tool](https://newruntime.com/posts/deepseek-harness-ships-dsh-v0-2-2-alpha-ca4e22/) (2026-10-28) - [Vercel AI SDK HarnessAgent now accepts image inputs across all harness adapters](https://newruntime.com/posts/vercel-ai-sdk-harnessagent-now-accepts-image-inputs-2ddc63/) (2026-10-28) - [humanlayer: The best way to get AI coding agents to solve hard problems in complex codebases](https://newruntime.com/posts/humanlayer-the-best-way-to-get-ai-coding-5e49d4/) (2026-10-26) - [OpenBot is a source-available desktop app from Nightly Labs, operating as Synthetify Labs, that runs multiple persistent AI agents from one interface.](https://newruntime.com/posts/openbot-is-a-source-available-desktop-app-from-d564db/) (2026-10-27) Editor: [Andrey Reshetnikov](https://newruntime.com/owner-profile.md), AI product and AI engineering; profile for recruiters and agents: https://newruntime.com/owner-profile.json ## Continue in the graph Next records for an agent, linked to their Markdown twins. Replace `.md` with `.json` for structured fields, including `next_reads`. - topic hub: [Claude](https://newruntime.com/topics/claude.md): Explore the claude topic hub. - topic hub: [Claude Code](https://newruntime.com/topics/claude-code.md): Explore the claude-code topic hub. - topic hub: [Codex](https://newruntime.com/topics/codex.md): Explore the codex topic hub. - collection: [Raw Signals](https://newruntime.com/signals.json): Open every source-linked raw signal. - collection: [Source Ledger](https://newruntime.com/source-ledger.json): Inspect the public source evidence graph. - whole graph: [discovery graph](https://newruntime.com/discovery-graph.json) (typed nodes and edges) and [site index](https://newruntime.com/site-index.md)