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Sweep 08 Oct 2026 · 18:53Z Build v2.1.295 516 read Stable v2.1.286 Latest v2.1.295 Next v2.1.295 Feeds RSS JSON llms.txt llms-full.txt Unofficial
Home / Reference / Settings keys

clientSecretHelper

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.

Hosted managed config now rejects an MCP server's OAuth client secret unless it is a Google client, and points others to oauth.clientSecretHelper

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.293.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 138on this box, as of v2.1.295
Written about v2.1.293 first named in a changelog, 7 Oct 2026

In the changelogs

3

Releases whose published page names clientSecretHelper.

  1. v2.1.293
    Hosted managed MCP config now refuses client secrets except Google ones

    Hosted managed config now rejects an MCP server's OAuth client secret unless it is a Google client, and points others to oauth.clientSecretHelper

    found in this entry's text

  2. v2.1.293
    MCP client secret helpers now have a stated output format and time limit

    The client secret helper must print a JSON object with one clientSecret key and exit 0 within 30 seconds, or the server will not connect

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

  3. v2.1.293
    MCP client secret helpers are now documented as having to print JSON

    The clientSecretHelper description now says the helper must print one JSON object with a clientSecret key and exit 0 within 30 seconds

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

First cited

1

The earliest release whose published evidence quoted clientSecretHelper was v2.1.293, 7 Oct 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.

ReleaseDateThe span that was quoted
v2.1.2937 Oct 2026for any other identity provider use oauth.clientSecretHelper

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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