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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.273 ·

New gated "headless hearth mount" (webagent MCP bridge) wired into headless session startup

New gated 'headless hearth mount' wires a webagent MCP bridge into headless session startup

TierNothing to try yethow much it should matter to you
Useful3my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaRemote Controlwhat it touches
KindIn Developmentin v2.1.273,
Nothing to try yet

New gated 'headless hearth mount' wires a webagent MCP bridge into headless session startup

What

Headless sessions (used for print mode or the SDK) can now, when a bridge SDK URL is present and parseable, set up something called a 'headless hearth mount' via createHeadlessHearthMount. It's wired up with storage, credentials, the session's bearer token, and configuration for reading the projects binding. This is controlled by a feature gate.

Why

This lays groundwork for connecting headless sessions to a webagent MCP bridge, though it isn't enabled for general use yet.

Read from
Feature flag
tengu_webagent_mcp_bridge Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.273: not a boolean we can read

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.273. It isn't a statement about your account. What a flag value here can and cannot tell you

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe `tengu_webagent_mcp_bridge` gate returned off for this site's account and for the anonymous baseline; no reading has been taken under…
The name it cites is new in this buildNew in this build: tengu_webagent_mcp_bridge

See this entry in the whole of v2.1.273 →

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