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Home / Reference / Settings keys

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setting never mined JSON

A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

Your MCP allow and deny rules now match servers whose commands or URLs use environment variables.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.219.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 150on this box, as of v2.1.309
Written about v2.0.72 first named in a changelog, 17 Dec 2025

In the changelogs

64

Releases whose published page names url.

  1. v2.1.309
    Clearer rules and errors when Claude publishes Artifact files

    The Artifact tool now spells out how file paths are served from root, and gives detailed errors when nothing was published

    found in this entry's text

  2. v2.1.309
    The artifact tool no longer publishes combined pull-request review pages

    The artifact tool can no longer publish composed pull request review pages, and creating from a type can now need a person's consent

    found in this entry's text

  3. v2.1.309
    MCP server settings can carry a ready-made listing

    MCP server settings with a url can now include a handed_listing, and cached servers can reuse details from an earlier connection

    found in this entry's text

  4. v2.1.309
    Built-in Chrome server left out of the policy-blocked MCP server warning

    The warning about MCP servers blocked by policy no longer lists the built-in Chrome server when Claude Code handles it separately

    found in this entry's text

  5. v2.1.309
    After creating an Artifact from a type, Claude is told where it is served from

    When Claude creates an Artifact from a type, it now gets the served path and root folder and is told to use them when updating it

    found in this entry's text

  6. v2.1.300
    New managed setting for self-hosted session hosts

    Managed settings gain a beta selfHosted section with a host URL and a credential type, shown under "Self-hosted execution"

    found in this entry's text

  7. v2.1.293
    Marketplace credential helpers can now supply HTTP headers for URL sources

    For url marketplace sources, a credentialHelper may print HTTP headers as a JSON object instead of only an Authorization value

    found in this entry's text

  8. v2.1.290
    Creating a cloud session now reports what was not applied

    The cloud session create command now prints a notice and a list of what was not applied, also adding both to its JSON output

    found in this entry's text

  9. v2.1.284
    Claude is told to read an artifact before publishing changes to it

    The Artifact tool's instructions now accept only claude.ai artifact links and say a publish is refused unless Claude has read the artifact first

    found in this entry's text

  10. v2.1.283
    Self-hosted runners move git certificate settings into each session's git config

    On git 2.31 or newer, runners move GIT_SSL_CAINFO and GIT_SSL_NO_VERIFY into session git config so governed hosts are still verified

    found in this entry's text

  11. v2.1.283
    Large artifacts can be uploaded over several publishes

    Artifact limits are now split between each publish and each version, so files beyond one publish's cap can go up in a later publish

    found in this entry's text

  12. v2.1.281
    Plugin Directory marketplace code added but compiled out

    Code for an Anthropic plugin directory marketplace is present but cannot switch on in this build

    found in this entry's text

  13. v2.1.281
    Managed config: serve_to_desktop and optional marketplace SHA

    Managed config entries accept serve_to_desktop, and marketplace entries no longer need a SHA-256, falling back to available without one

    found in this entry's text

  14. v2.1.281
    Artifact database tool description gains a 'People' section and an action: "profiles" lookup

    The artifact database tool's description now explains person ids and an action: "profiles" lookup for details such as guest status

    found in this entry's text

  15. v2.1.281
    Plugin validation now checks a plugin's MCP server files

    Plugin validation now checks a plugin's MCP server files for bad settings, insecure addresses and credentials left in plain text

    found in this entry's text

  16. v2.1.281
    Plugins pinned to a directory are cloned without submodules

    Plugins with a directory pin are now cloned without fetching git submodules

    found in this entry's text

  17. v2.1.281
    Managed marketplace auto_install/required entries without a pin are treated as available

    Managed auto_install or required marketplace entries without a pin are treated as available and flagged as a config warning

    found in this entry's text

  18. v2.1.277
    Gateway self-host config: per-upstream custom headers, and a new loopback guard on telemetry forwarding

    Gateway config adds per-upstream custom headers and blocks loopback telemetry URLs unless explicitly allowed

    found in this entry's text

  19. v2.1.275
    Marketplace add gets a stricter no-replace safeguard for URL sources

    Adding a plugin marketplace from a URL now guards more strictly against overwriting an existing one

    found in this entry's text

  20. v2.1.275
    New artifact watch error: 'watch target changed' when action/url no longer matches the approved watch

    New error tells the user to retry when an artifact watch's action or URL no longer matches

    found in this entry's text

  21. v2.1.275
    Artifact URL 'update in place' now allows granted editors, not just owners

    Artifact 'update in place' now works for editors given write access, not just the owner

    found in this entry's text

  22. v2.1.271
    Optional delete/open/pin verbs for artifacts, each independently gated

    Artifacts gain optional delete, open, and pin actions, each turned on separately

    found in this entry's text

  23. v2.1.269
    WebFetch/artifact-read tool also moves to create() instance pattern with new renderToolUseMessage and prompt hook

    The WebFetch tool moves to the newer create() internal structure and gains a verbose-mode message and prompt hook

    found in this entry's text

  24. v2.1.268
    Push-on-release message clarifies runner-side credential behaviour and pushInsteadOf skip

    Push-on-release failure message now explains credential and pushInsteadOf behavior more precisely

    found in this entry's text

  25. v2.1.267
    Artifact create-from-type now also rejects a deadline field

    Creating an Artifact from a type_url now also rejects a stray deadline field

    found in this entry's text

  26. v2.1.267
    New artifact tool action: "open"

    Artifacts tool gains an "open" action to display an existing artifact without publishing it

    found in this entry's text

  27. v2.1.265
    Verify tool now refuses url-less calls for delegated-observation agents

    The verify tool now rejects url-less calls made on behalf of delegated observation agents

    found in this entry's text

  28. v2.1.265
    CRI/gateway loopback config validator gains an escape-hatch env var

    Gateway loopback check now also covers cri.issuer and cri.policy.webhook.url, not just cri.jwks_url

    found in this entry's text

  29. v2.1.261
    --claudeai flag lets you add a claude.ai-hosted plugin marketplace

    You can now add a claude.ai-hosted plugin marketplace with a new --claudeai flag.

    found in this entry's text

  30. v2.1.261
    Artifact comments tool now validates the read target hasn't changed before serving results

    Artifact comments now verify the read target hasn't changed before serving results.

    found in this entry's text

  31. v2.1.260
    New asset schema fields hint at cross-artifact asset copying

    New schema fields hint at cross-artifact asset copying, but nothing uses them yet.

    found in this entry's text

  32. v2.1.260
    Artifact asset store gains a server-side copy_from action

    Artifact assets can now be copied server-side between artifacts without downloading them.

    found in this entry's text

  33. v2.1.260
    Loopback/non-https URL rejection widened to array-valued bootstrap fields

    URL safety checks now cover list-valued config fields, with a new setting to allow loopback response URLs.

    found in this entry's text

  34. v2.1.260
    Plugin marketplaces gain an inference-credential auth mode

    Plugin marketplaces can now authenticate using the app's existing inference credential.

    found in this entry's text

  35. v2.1.257
    Artifact comments/watch tool renames its action vocabulary

    Artifact comment actions are respelled: read replaces comments, watch with on false replaces unwatch, and old names now error.

    found in this entry's text

  36. v2.1.248
    Publish hint about missing fields simplified

    The publish hint about missing file_path or favicon is simpler now.

    found in this entry's text

  37. v2.1.246
    Artifact asset uploads accept text files and return a URL to use as-is

    Claude can upload CSV, Markdown, JSON and text files into an artifact and link them by returned URL.

    found in this entry's text

  38. v2.1.246
    Publish-over-an-existing-page failures now distinguish a proxy block from an HTTP error

    Publishing over an existing page now says whether a proxy block or an HTTP error stopped the check.

    found in this entry's text

  39. v2.1.242
    Plugins can play sounds and speak, within per-session budgets

    Plugins can play sounds and speak aloud, capped per session, on macOS and browser hosts only.

    found in this entry's text

  40. v2.1.239
    Artifact tool rejects a URL pointing inside the artifact

    Pointing the artifact tool at a URL inside the artifact now fails with a clear explanation.

    found in this entry's text

  41. v2.1.236
    Artifact tool stops retrying after three identical rejections

    The Artifact tool stops looping after three identical failures and reports the problem to you.

    found in this entry's text

  42. v2.1.236
    Clearer Artifact tool errors for bad links and oversized pages

    Artifact tool errors now tell you what to do next instead of just what broke.

    found in this entry's text

  43. v2.1.236
    Artifact types (templates and starters), built end to end and off by default

    You could start a private artifact from a published template, but two server switches keep it shut here.

    found in this entry's text

  44. v2.1.235
    Design tool: an approved database read/write is now bound to the exact action and project slug

    Design tool database read/write consent is now bound to the exact approved action and project slug

    found in this entry's text

  45. v2.1.235
    Artifact asset permission scope and messages reworded

    Artifact asset permission and error messages reworded, with broader scope and coverage

    found in this entry's text

  46. v2.1.234
    Saved artifact HTML is sanitized and refused if it will not round-trip

    Artifact saves get sanitized and refused if the content cannot be published cleanly, in a disabled skill.

    found in this entry's text

  47. v2.1.227
    Artifact tool: put the title near the top, and pass a URL to update an existing artifact

    To update an existing artifact you must pass its URL; find it with the list action.

    named in this entry, found in this entry's text

  48. v2.1.227
    Publish instructions drop the "minted URL" wording

    Publishing without a link is now described as creating a separate artifact, not updating one.

    found in this entry's text

  49. v2.1.225
    Artifact comments listing gained pagination and single-thread lookup

    You can now fetch a single artifact comment thread or page through long listings with a cursor.

    found in this entry's text

  50. v2.1.224
    Create a cloud session without a terminal

    Create a cloud session straight from the command line with --environment and a prompt, optionally as JSON.

    found in this entry's text

  51. v2.1.224
    Git identity, commit signing and proxied clones for runner sessions

    --configure-git sets a commit identity and installs SSH commit signing backed by a code-sign subcommand.

    found in this entry's text

  52. v2.1.221
    Review pages are protected from overwrite and live-edit

    Claude refuses to publish over or live-edit a page it identifies as a review page.

    found in this entry's text

  53. v2.1.219
    MCP allow/deny rules compare expanded env-var values

    Your MCP allow and deny rules now match servers whose commands or URLs use environment variables.

    found in this entry's text

  54. v2.1.219
    MCP error text is sanitized and credential-redacted before display

    MCP error messages now hide credentials and strip weird characters before showing them to you.

    found in this entry's text

  55. v2.1.203
  56. v2.1.196
    Enterprise Monitoring Notice

    found in this entry's text

  57. v2.1.195
    MCP Tool Schema Normalization

    found in this entry's text

  58. v2.1.176
    Footer Link Badges

    found in this entry's text

  59. v2.1.172
    Artifact Tool

    found in this entry's text

  60. v2.1.119
    New Settings

    found in this entry's text

  61. v2.1.113
  62. v2.1.56

    found in this entry's text

  63. v2.1.23
    GitHub PR State Field

    found in this entry's text

  64. v2.0.72
    Marketplace Blocklist Support

    found in this entry's text

First cited

0

No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.

Presence across releases

0

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.

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