{
    "format": "anawords-story/1",
    "docs": "https://anawords.com/data",
    "url": "https://anawords.com/story/anthropic-scion-source-control-replaces-git-monorepo",
    "title": "Anthropic says it replaced Git with its own source control system, Scion, after daily merges passed 30,000",
    "summary": "Scion is internal and not open source. A developer who helped build Meta’s Mononoke says Anthropic’s design write-up closely follows Mononoke’s and should credit it.",
    "section": "Tools & Apps",
    "type": "report",
    "published": "2026-10-15T12:20:51+05:30",
    "updated": "2026-10-15T12:20:51+05:30",
    "version": 1,
    "author": {
        "name": "Mayank Sahu",
        "url": "https://anawords.com/author/mayank-sahu"
    },
    "how_checked": "Sources checked by AI; published under the editor’s standing approval. Not read line by line by a person before publication.",
    "ai_assisted": true,
    "research_note": "https://anawords.com/research/anthropic-scion-source-control-replaces-git-monorepo",
    "labels": {
        "confirmed": {
            "name": "Confirmed",
            "meaning": "An official source says it: lab docs, pricing page, notice."
        },
        "reported": {
            "name": "Reported",
            "meaning": "Two or more independent, named outlets say it."
        },
        "claim": {
            "name": "Company claim",
            "meaning": "Only the company says it. Not checked by anyone else yet."
        },
        "unconfirmed": {
            "name": "Unconfirmed",
            "meaning": "One report only, shown with its source."
        },
        "unknown": {
            "name": "Not known",
            "meaning": "Not announced or not answered yet."
        }
    },
    "facts": [
        {
            "id": "f1",
            "text": "Anthropic moved its monorepo from Git to its in-house system, Scion, in five months.",
            "label": "confirmed",
            "label_name": "Confirmed",
            "key_fact": true,
            "sources": [
                1
            ],
            "outcome": null
        },
        {
            "id": "f2",
            "text": "Daily merges grew from about 2,500 in May 2026 to over 30,000 in September.",
            "label": "claim",
            "label_name": "Company claim",
            "key_fact": true,
            "sources": [
                1
            ],
            "outcome": null
        },
        {
            "id": "f3",
            "text": "Scion’s infrastructure is 200x smaller than the old Git mirrors.",
            "label": "claim",
            "label_name": "Company claim",
            "key_fact": false,
            "sources": [
                1
            ],
            "outcome": null
        },
        {
            "id": "f4",
            "text": "Scion is internal and has not been released as open source.",
            "label": "confirmed",
            "label_name": "Confirmed",
            "key_fact": false,
            "sources": [
                1
            ],
            "outcome": null
        },
        {
            "id": "f5",
            "text": "A former Mononoke developer says Scion’s design closely follows Mononoke and should credit it.",
            "label": "confirmed",
            "label_name": "Confirmed",
            "key_fact": true,
            "sources": [
                2
            ],
            "outcome": null
        },
        {
            "id": "f6",
            "text": "Whether Anthropic will respond to the credit criticism.",
            "label": "unknown",
            "label_name": "Not known",
            "key_fact": false,
            "sources": [],
            "outcome": null
        }
    ],
    "sources": [
        {
            "n": 1,
            "url": "https://www.anthropic.com/engineering/redesigning-source-control",
            "title": "Anthropic Engineering: Redesigning source control",
            "type": "official",
            "checked": "15 Oct 2026",
            "archive": {
                "url": "https://web.archive.org/web/20261015011001/https://www.anthropic.com/engineering/redesigning-source-control",
                "archived": "2026-10-15T06:40:01+05:30"
            },
            "original_gone": false
        },
        {
            "n": 2,
            "url": "https://sunshowers.io/posts/anthropic-mononoke/",
            "title": "sunshowers: Anthropic’s Scion and Mononoke",
            "type": "outlet",
            "checked": "15 Oct 2026",
            "archive": {
                "url": "https://web.archive.org/web/20261015071105/https://sunshowers.io/posts/anthropic-mononoke/",
                "archived": "2026-10-15T12:41:05+05:30"
            },
            "original_gone": false
        },
        {
            "n": 3,
            "url": "https://aiweekly.co/alerts/anthropic-builds-scion-to-replace-git-after-merges-hit-30000day",
            "title": "AI Weekly: Anthropic builds Scion to replace Git",
            "type": "outlet",
            "checked": "15 Oct 2026",
            "archive": {
                "url": "https://web.archive.org/web/20261015071507/https://aiweekly.co/alerts/anthropic-builds-scion-to-replace-git-after-merges-hit-30000day",
                "archived": "2026-10-15T12:45:07+05:30"
            },
            "original_gone": false
        }
    ],
    "promises": [],
    "prices": [],
    "incidents": [],
    "image": {
        "url": "https://anawords.com/uploads/2026/10/anthropic-scion-source-control-replaces-git-monorepo-16x9.webp",
        "kind": "illustration",
        "note": "Anawords illustration made by software from facts in the story. Not a photograph."
    },
    "changes": [
        {
            "version": 1,
            "date": "2026-10-15T12:20:51+05:30",
            "correction": false,
            "note": "First published. Research note published first. Sources checked by AI; approved for publication by the editor."
        }
    ],
    "license": {
        "facts_and_data": "Creative Commons Attribution 4.0 (CC BY 4.0)",
        "url": "https://creativecommons.org/licenses/by/4.0/",
        "article_text": "© Anawords. Quote with a link.",
        "attribution": "Anawords, https://anawords.com/story/anthropic-scion-source-control-replaces-git-monorepo"
    }
}