Sources

External references cited across the site, in two groups: engineering practice for many parallel writers, and the agent-platform ecosystem.

Parallel development and integration

#	Source
1	Codex — AI Coding Partner from OpenAI
2	About the GitHub Copilot app — GitHub Docs
3	About code owners — GitHub Docs
4	Harness engineering: leveraging Codex in an agent-first world — OpenAI
5	GitHub Copilot — AI coding built your way
6	Introducing the Codex app — OpenAI
7	Deploying code (merge queue) — GitHub Docs
8	About rulesets — GitHub Docs
9	Merge Queue — Graphite
10	An open-source spec for Codex orchestration: Symphony — OpenAI
11	Software Agent SDK — OpenHands Docs
12	From Agents to Systems: OpenHands Enterprise, the Agent Control Plane
13	OpenHands — The Open Platform for Cloud Coding Agents
14	Parallel Branches — GitButler Docs
15	Use Copilot agents — GitHub Docs

Agent frameworks and the mature stack

#	Source
16	LangGraph overview — Docs by LangChain
17	Microsoft Agent Framework — GitHub
18	microsoft/autogen: A programming framework for agentic AI — GitHub
19	Semantic Kernel — GitHub
20	OpenHands: An Open Platform for AI Software Developers as Generalist Agents — arXiv
21	Argo Workflows — Argo Project
22	Tekton
23	Pipeline — Jenkins User Documentation
24	Open Policy Agent
25	Backstage Software Catalog and Developer Platform
26	Model Context Protocol

Harness capabilities

Vendor documentation for the capability comparisons in Isolated Write Contexts, The Agent Runtime, Roles & Review and the Orchestration Landscape. Checked September 2026; this is the area of the site that dates fastest.

#	Source
27	Subagents — Claude Code Docs
28	Hooks — Claude Code Docs
29	Permissions — Claude Code Docs
30	Sandboxing — Claude Code Docs
31	Headless mode — Claude Code Docs
32	Agent SDK overview — Claude Code Docs
33	Agents — Claude Code Docs
34	Sandboxing — Codex Docs
35	Hooks — Codex Docs
36	Subagents — Codex Docs
37	Config reference — Codex Docs
38	Git worktrees — Codex Docs
39	About Copilot cloud agent — GitHub Docs
40	Risks and mitigations — GitHub Docs
41	Allowing tools in Copilot CLI — GitHub Docs
42	Custom agents — GitHub Docs
43	Custom instructions support — GitHub Docs
44	Docker sandbox — OpenHands Docs
45	File-based agents — OpenHands Docs
46	Headless mode — OpenHands Docs
47	Enterprise vs open source — OpenHands Docs
48	Security API reference — OpenHands Docs
49	Memory — Claude Code Docs
50	Skills — Claude Code Docs
51	Code review — Claude Code Docs
52	CLI reference — Codex Docs
53	Customization overview — Codex Docs
54	Agent approvals and security — Codex Docs
55	Agentic audit log events — GitHub Docs
56	Configure automatic review — GitHub Docs
57	Copilot CLI programmatic reference — GitHub Docs
58	Configure secrets and variables — GitHub Docs
59	Hooks — OpenHands Docs

On citations

Claims attributed to a vendor above describe what that vendor documents about its own product. Everything else on this site — in particular Single Write Authority, ownership domains and the five primitives — is argument, not vendor documentation.