Agent skill

Voice Post Call

by garrytan in garrytan/gbrain

Post-call handling for a voice session — turn the transcript into a brain page, post the summary to the operator's messaging surface, archive the audio.

MITAuto-check: notes

Install Voice Post Call

skills CLI
$ npx skills add garrytan/gbrain --skill voice-post-call -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install garrytan/gbrain voice-post-call --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/garrytan/gbrain.git skills-src && mkdir -p .claude/skills && cp -r skills-src/recipes/agent-voice/skills/voice-post-call .claude/skills/voice-post-call && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
voice-post-call
GitHub stars
31k
Token cost
~1.7k tokens
SKILL.md length
489 words
Files
2
Skills in repo
47
Repo updated
First seen
Licence
MIT

At a glance

Post-call handling for a voice session — turn the transcript into a brain page, post the summary to the operator's messaging surface, archive the audio.

  • SKILL.md covers Iron Law, The pipeline, Two firing paths (both… and Brain page format, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Voice Post Call is an agent skill from garrytan/gbrain. Post-call handling for a voice session — turn the transcript into a brain page, post the summary to the operator's messaging surface, archive the audio. The pipeline is the contract; the firing paths are operator-wired (see "Two firing paths" below for what ships today).

Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file.

The repository describes itself as: Garry's Opinionated OpenClaw/Hermes Agent Brain. The licence is MIT.

Example prompts

  • “Two firing paths”
  • “/voice-post-call”

What it can do on your machine

Read from SKILL.md and the folder at commit fc54831. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Voice Post Call loads about 1.7k tokens when it runs. Until then it costs about 72 tokens; SKILL.md has 489 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~72
When it runs · the whole SKILL.md, loaded when a task matches
~1.7k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:50
    ord — whichever is wired in $TARGET_REPO/.env).

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from garrytan/gbrain at commit fc54831, republished under its MIT licence (© garrytan). 489 words, ~1,737 tokens.

Download SKILL.mdSave it as .claude/skills/voice-post-call/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
voice-post-call
description
Post-call handling for a voice session — turn the transcript into a brain page, post the summary to the operator's messaging surface, archive the audio. The pipeline is the contract; the firing paths are operator-wired (see "Two firing paths" below for what ships today).
version
0.1.0
triggers
after the call, call ended, summarize the call, call transcript, voice call summary, post call summary
mutating
true
writes_pages
true
writes_to
meetings/, voice-calls/

voice-post-call — Post-session transcript + summary handling

Convention: see gbrain's skills/conventions/quality.md for citation rules + back-link enforcement, and skills/_brain-filing-rules.md for the filing decision protocol. (These are not copied by the install; the relative paths resolve only if your host repo mirrors gbrain's skills layout.)

Iron Law

Every call gets processed, even on tool-call failure. The voice persona MAY log mid-session via an opted-in write tool, OR the call may end without that tool firing (model forgot, WebRTC dropped, browser crashed). A call-end handler should post a structured signal regardless so the brain still gets the transcript + audio reference — see "Two firing paths" below for which of these ships today and which the operator implements.

If both paths fire (the tool call AND the call-end handler), the second one is idempotent — it sees the brain page already exists and updates instead of duplicating.

The pipeline

1. CAPTURE  → MediaRecorder on the host repo's voice-agent service captures
              the full call audio (webm/opus) to /tmp/calls/<ts>-<persona>.webm.
              The browser client at /call?test=1 also captures via WebAudio-tee
              for E2E asserts; production /call uses server-side capture only.
2. TRANSCRIBE → Whisper (via gbrain transcription) processes the audio. Output:
              full transcript (timestamped) + speaker labels where possible.
3. SUMMARIZE  → A separate LLM call produces a 3-5 sentence summary covering
              key topics, decisions, and unresolved items.
4. WRITE      → Create or update meetings/YYYY-MM-DD-call-<persona>.md with:
              - frontmatter (date, persona, duration, ratings)
              - full transcript in a "Transcript" block-quote section
              - summary in a "Summary" section
              - audio link (file://, or signed URL if uploaded to storage)
              - any entity cross-links (people, companies mentioned)
5. CROSS-LINK → For each entity in the transcript (person, company), append a
              timeline entry to people/<slug>.md or companies/<slug>.md pointing
              back to this call page. Iron Law: per conventions/quality.md.
6. POST       → Send the summary to the operator's messaging surface (Telegram,
              Slack, Discord — whichever is wired in $TARGET_REPO/.env).

Two firing paths (both operator-wired today)

Path A — Persona-initiated mid-call (opt-in): The voice persona calls log_to_brain via the WebRTC data channel; the host-repo /tool endpoint dispatches through tools.mjs. log_to_brain is in OPTIONAL_OPS, not READ_ONLY_OPS, so this only works if the operator's tools-allowlist.local.json opts in (there is no log_call_summary tool — the override can only enable ops listed in OPTIONAL_OPS).

Path B — Call-end handler (not yet shipped): The shipped server.mjs has no automatic call-end handler — nothing fires when the WebSocket / WebRTC connection closes. To get the safety-net behavior, implement a post-call handler in your host repo that reads the captured audio + transcript on connection close and runs the pipeline above. Until you do, Path A (opt-in) is the only firing path, and calls where the persona never logs are NOT processed.

Brain page format

markdown
---
type: meeting
subtype: voice-call
persona: venus
date: 2026-05-17
duration_sec: 124
caller: operator
rating: 7
issues: []
audio_url: "file:///tmp/calls/2026-05-17-1029-venus.webm"
created: 2026-05-17
---

# Voice call: 2026-05-17 with Venus

> Brief 3-5 sentence summary of what was discussed and any decisions made.

## Summary
[Agent-authored 3-5 sentence summary covering topics, decisions, action items.]

## Transcript

> [Verbatim per-turn transcript with speaker labels and timestamps. Pure quote
> — do not paraphrase. Block-quoted because the exact wording matters more
> than a cleaned-up version.]

🔊 [Audio](file:///tmp/calls/2026-05-17-1029-venus.webm)

## Entities mentioned
- [Person](people/<slug>.md)
- [Company](companies/<slug>.md)

## Timeline

- **2026-05-17 10:29 PT** | voice call with Venus, 124s, rating 7 — [topic]

Citation format

[Source: voice call with <persona>, YYYY-MM-DD HH:MM PT]
Show full SKILL.md (214 more words)Show less

Anti-patterns

  • ❌ Paraphrasing the transcript. The verbatim text IS the signal; the summary is the agent's interpretation.
  • ❌ Skipping the audio archive step. Every call has a recoverable audio file.
  • ❌ Skipping entity cross-links when people/companies are mentioned. Iron Law fail.
  • ❌ Posting to messaging WITHOUT writing the brain page first. The messaging summary is a notification, not the canonical record.
  • ❌ Letting Path A's success suppress Path B. They MAY both fire; the second one is idempotent and serves as a redundant safety net.

Ships with this bundle (sibling directories after install):

Lives in gbrain's skills/ (present on the host only if your repo mirrors gbrain's skills layout):

  • meeting-ingestion — analogous flow for multi-party meeting transcripts (different in that voice-call is typically 1:1)
  • media-ingest — for recorded one-way voice memos (different from live voice calls)

Contract

This skill guarantees:

  • Routing matches the canonical triggers in the frontmatter.
  • The post-call pipeline runs idempotently — second invocations update rather than duplicate.
  • Output written under meetings/ or voice-calls/ (consistent with _brain-filing-rules.md).
  • Conventions referenced (quality.md, _brain-filing-rules.md) are followed.
  • Privacy contract preserved: no real names in any committed sample; the operator's actual call transcripts contain whatever they say, which is the operator's data and not gbrain's concern.

Output Format

markdown
---
type: meeting
subtype: voice-call
persona: <mars|venus>
date: YYYY-MM-DD
duration_sec: N
caller: <identity>
rating: 0-10
audio_url: "<file:// or signed URL>"
---

# Voice call: <date> with <persona>

> <Summary>

## Summary
<body>

## Transcript

> <verbatim>

🔊 [Audio](<url>)

## Timeline

- **<date> <time> <tz>** | voice call with <persona>, <duration>s — <topic>

© garrytan, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in recipes/agent-voice/skills/voice-post-call of garrytan/gbrain.

  • SKILL.md
  • routing-eval.jsonl

Open the folder on GitHubat commit fc54831

Compare with similar skills

Voice Post Call next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Voice Post Call compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Voice Post Call this skillgarrytan/gbrain31k—~1.7kAutomated safety check: NotesMIT
YouTube Transcript FetcherZeroPointRepo/youtube-skills1k1 repos~1.1kAutomated safety check: PassMIT
Baoyu Youtube TranscriptJimLiu/baoyu-skills26k1 repos~2.4kAutomated safety check: PassMIT
Youtube Transcriptbrowser-act/skills6.1k—~2.1kAutomated safety check: PassMIT
Youtube Transcriptsickn33/agentic-awesome-skills47k1 repos~1.3kAutomated safety check: PassMIT
Transcription0xsline/OpenChatCut2.2k1 repos~1.1kAutomated safety check: PassAGPL-3.0

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Questions about Voice Post Call

What does Voice Post Call do?

Post-call handling for a voice session — turn the transcript into a brain page, post the summary to the operator's messaging surface, archive the audio. Voice Post Call is an agent skill from garrytan/gbrain. Post-call handling for a voice session — turn the transcript into a brain page, post the summary to the operator's messaging surface, archive the audio.

How do I install Voice Post Call in Claude Code?

Run `npx skills add garrytan/gbrain --skill voice-post-call -a claude-code`. Or copy the skill folder (recipes/agent-voice/skills/voice-post-call in garrytan/gbrain) into .claude/skills/voice-post-call in your project. Claude Code loads it when a task matches its description.

How do I install Voice Post Call in Codex?

Run `npx skills add garrytan/gbrain --skill voice-post-call -a codex`. Or copy the skill folder (recipes/agent-voice/skills/voice-post-call in garrytan/gbrain) into .agents/skills/voice-post-call in your project. Codex loads it when a task matches its description.

Can I use Voice Post Call in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add garrytan/gbrain --skill voice-post-call -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/voice-post-call, .gemini/skills/voice-post-call, .github/skills/voice-post-call and .opencode/skills/voice-post-call in your project.

What does Voice Post Call need to run?

SKILL.md names no scripts, command-line tools or credentials: Voice Post Call is instructions for the agent only.

Does Voice Post Call access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Voice Post Call safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Voice Post Call use?

Voice Post Call is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Voice Post Call use?

About 1.7k tokens (SKILL.md is roughly 6.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Voice Post Call?

Skills that share tags, products or a category with Voice Post Call: YouTube Transcript Fetcher (ZeroPointRepo/youtube-skills, 1k stars), Baoyu Youtube Transcript (JimLiu/baoyu-skills, 26k stars), Youtube Transcript (browser-act/skills, 6.1k stars) and Youtube Transcript (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Voice Post Call?

garrytan (a GitHub user) maintains it in garrytan/gbrain, which has 30,701 GitHub stars. The repository holds 47 skills in this directory. The repository was last updated on October 9, 2026.

Source: garrytan/gbrain on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.