{"type":"post","id":"google-open-sources-elephant-goldfish-model-egm-agent-dfd007","slug":"google-open-sources-elephant-goldfish-model-egm-agent-dfd007","title":"Google open-sources Elephant-Goldfish Model (EGM), agent skills for spec-first design with zero-context reviewer subagents","description":"Google has open-sourced Elephant-Goldfish Model (EGM), a plugin of agent skills for designing software before implementation.","retrieval_nugget":"Google has open-sourced Elephant-Goldfish Model (EGM), a plugin of agent skills for designing software before implementation. It separates a context-rich design agent from fresh-context reviewers, giving teams a repeatable way to expose assumptions in a specification before a coding agent turns it into code.","published_at":"2026-10-31","updated_at":"2026-10-31","record_date":"2026-10-31","date_kind":"published_at","topics":["google","skills","claude"],"entities":["Google","Elephant-Goldfish Model","EGM","Claude Code","Codex","Antigravity"],"related_patterns":["skills-become-portable-capability-layer","harness-architecture-outlives-model-choice","verification-bandwidth-is-the-scarce-resource"],"novelty_label":"new_fact","what_changed":"Google has open-sourced EGM, a distinct set of agent skills for spec-first software design and zero-context reviewer subagents.","prior_refs":["memory:0225fe3c-a384-88e6-ae5a-ec5d99857fbd","memory:c3bd1484-092e-8d63-a1e7-8fd934dd670a"],"source_url":"https://github.com/google/elephant-goldfish-model","source_urls":["https://github.com/google/elephant-goldfish-model"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:google-open-sources-elephant-goldfish-model-egm-agent-dfd007","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/posts/google-open-sources-elephant-goldfish-model-egm-agent-dfd007/","markdown":"https://newruntime.com/posts/google-open-sources-elephant-goldfish-model-egm-agent-dfd007.md","json":"https://newruntime.com/posts/google-open-sources-elephant-goldfish-model-egm-agent-dfd007.json"},"next_reads":[{"type":"topic","path":"/topics/google/","url":"https://newruntime.com/topics/google/","title":"Google","reason":"Explore the google topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/google.md","json_url":"https://newruntime.com/topics/google.json"},{"type":"topic","path":"/topics/skills/","url":"https://newruntime.com/topics/skills/","title":"Skills","reason":"Explore the skills topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/skills.md","json_url":"https://newruntime.com/topics/skills.json"},{"type":"topic","path":"/topics/claude/","url":"https://newruntime.com/topics/claude/","title":"Claude","reason":"Explore the claude topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude.md","json_url":"https://newruntime.com/topics/claude.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}