[kjgbot]

T3 Code runs Claude as a stream-json process with no terminal and an sdk-ts entrypoint, so the core treated its chats as automation. They never joined the roster and gave no error. Seen on 15.0.6 on a test laptop, where a live T3 chat stayed off the roster while a Conductor chat joined.

is_t3_chat requires a stream-json pipe with no terminal and no -p, then walks the process tree to T3 Code's own executable like the Claude desktop check, through a shared hosted_by. It requires kind: interactive, and a Claude session a chat starts stays automation, even if that parent's registry file cannot be read.

• Tests: relay::claude passes, including new tests for the bundle paths, a chat, a nested session, a non-interactive run and an SDK run outside T3. Not yet tried on a live T3 session.
• Startup note: has_person still returns false, so a T3 chat gets no join note at session start. Once on Relay, the OnRelay branch of hook_output gives the preamble whatever interactive is, and each delivered message carries its own reply instructions.
• Needs a probe release and a PROBE_VERSION bump to reach users. The desktop core needs the same change.

🤖 Generated with Claude Code

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Agent Relay sessions

• claude session aa49aa99 · opened via gh pr create · last active 2026-10-31

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Walkthrough

The probe recognizes supported T3 Code executables and identifies qualifying interactive Claude sessions through process ancestry. It includes those sessions in app-hosted chat detection. Tests cover executable paths and session classification, and the changelog records the update.

Changes: T3 Code chat detection

Layer / File(s)	Summary
Host and session detection crates/probe/src/relay/claude/app.rs	The probe matches T3 Code executable paths and identifies structured Claude sessions using session properties, process ancestry, and registry records. Tests cover accepted and rejected executable paths and session cases.
Activation integration crates/probe/src/relay/local/directory_trait.rs, CHANGELOG.md	The activation check passes the full Claude registry to the conductor-chat and app-hosted-chat checks. The changelog records T3 Code chats joining Relay and appearing in relay agent list.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant ActivationCheck
  participant AppHostedChatCheck
  participant ProcessTable
  participant Registry
  ActivationCheck->>AppHostedChatCheck: pass Claude Registry
  AppHostedChatCheck->>ProcessTable: inspect session process ancestry
  AppHostedChatCheck->>Registry: check session PID boundaries

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Possibly related issues

• AgentWorkforce/relay issue 2047: This issue covers T3 Code Claude chats on Linux, which this change does not support.
• AgentWorkforce/relay issue 2045: This issue covers T3 Code Claude sessions on Linux and Windows, which this change does not support.

Possibly related PRs

• AgentWorkforce/relay#2016: Adds the Claude joining path that uses activation eligibility supplied by this change.

Merge Risk: Moderate · up to 0a7ed

Linux T3 Code chats may still be treated as automation rather than joining Relay. Resolve or explicitly accept that platform gap before merging.

Pre-merge checks: 5

Check name	Status	Explanation
Title check		The title "fix(probe): let T3 Code's Claude chats join Relay" states the main change: a bug fix in the probe that lets T3 Code's Claude chats join Relay. The changeset adds T3 Code app and chat detect…
Description check		The description covers the problem, the fix, and the test status. It explains the root cause (T3 Code runs Claude as a stream-json process with no terminal, so the core treated its chats as automation…
Docstring Coverage		Docstring coverage is 85.71% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentati…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Title check

Explanation

The title "fix(probe): let T3 Code's Claude chats join Relay" states the main change: a bug fix in the probe that lets T3 Code's Claude chats join Relay. The changeset adds T3 Code app and chat detection in crates/probe/src/relay/claude/app.rs, updates the registry handling in directory_trait.rs, and adds a changelog entry for the same fix. The title is specific and concise, and it follows the conventional commit format.

Full details: Description check

Explanation

The description covers the problem, the fix, and the test status. It explains the root cause (T3 Code runs Claude as a stream-json process with no terminal, so the core treated its chats as automation) and describes the is_t3_chat logic and its safeguards. It also lists the tests that pass, the untested live T3 session, the startup-note limitation, and the release steps. However, the template's required sections are not filled in. The RelayFlow Proof section still contains the placeholder values 'replace-me' for both the change type and the RelayFlow case. The Test Plan checkboxes are unchecked, and the Screenshots section is left as the template comment. Because the description is mostly complete, the check passes, but the author should complete the RelayFlow Proof section and update the Test Plan checkboxes.

Resolution

Replace both 'replace-me' placeholders in the RelayFlow Proof section. Set the change type to 'bugfix' because this changes user-visible behavior. Add exactly one case under tests/relayflows/cases/<case-id>/ and set the case ID. Update the Test Plan checkboxes to reflect the work done, or note that manual testing on a live T3 session is still pending.

Full details: Docstring Coverage

Explanation

Docstring coverage is 85.71% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 7 functions across 2 files. (1 skipped: 1 unsupported.)

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_{A rabbit checks the process trail,
Where T3 Code chats once went stale.
The registry keeps each boundary clear,
And qualifying chats now appear.
Patch notes hop along the way,
As Relay welcomes chats today.}

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge with dependent PR #2046 supplying Linux support.

Summary

Lets T3 Code’s Claude chats join Relay by checking their process arguments and parent processes.

• T3 Code’s macOS Claude chats can now join Relay automatically.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart TD
  A[Live Claude session] --> B{Structured input, no terminal, no print flag?}
  B -->|Yes| C{Interactive session?}
  C -->|Yes| D[Walk parent processes]
  D --> E{Another Claude session first?}
  E -->|Yes, readable or unreadable| F[Keep as automation]
  E -->|No, same-user T3 app found| G[Allow automatic join]
  B -->|No| F
  C -->|No| F

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_{Reviews (4) · Last reviewed commit: "Merge remote-tracking branch 'origin/mai..." · Reviewed by Greptile}

[coderabbitai]

Actionable comments posted: 1

Additional comments: 1

crates/probe/src/relay/claude/app.rs-28-31: 1

28-31: Major · Functional Correctness · Heavy lift

Unverified finding
Verification ran but could not confirm this finding. It is shown for review, not as a verified issue.

Recognize T3 Code on supported platforms.

This matcher accepts only macOS app bundles. T3 Code also ships Linux and Windows builds, whose chats therefore cannot pass is_t3_chat and still stay off Relay. (t3.codes)

Add platform-specific host detection and tests.

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Inline comments:
Review comments at @crates/probe/src/relay/claude/app.rs:
- Line 62: Update the T3 chat detection path around hosted_by and is_t3_chat to
reject Claude processes launched with -p from T3’s terminal before returning
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Review comments at @crates/probe/src/relay/claude/app.rs:
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