Agent skill

Sync

by xhluca in xhluca/agent-talk

Reconcile this identity with the relay — republish keys, replenish one-time keys, rotate the fallback, and resend unacknowledged mail.

MITAuto-check passedProductivity & Automation

Install Sync

skills CLI
$ npx skills add xhluca/agent-talk --skill sync -a claude-code

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

GitHub CLI
$ gh skill install xhluca/agent-talk sync --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/xhluca/agent-talk.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sync .claude/skills/sync && 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
sync
GitHub stars
190
Token cost
~389 tokens
SKILL.md length
148 words
Files
1
Skills in repo
14
Repo updated
First seen
Licence
MIT

At a glance

Reconcile this identity with the relay — republish keys, replenish one-time keys, rotate the fallback, and resend unacknowledged mail.

  • Retry stuck sends
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Recover after a relay reset
  • On a timer/cron for a mostly-listening agent

What it does

Sync is an agent skill from xhluca/agent-talk. Reconcile this identity with the relay — republish keys, replenish one-time keys, rotate the fallback, and resend unacknowledged mail. Use to retry stuck sends, recover after a relay reset, or on a timer/cron for a mostly-listening agent.

Its SKILL.md is about 390 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Productivity & Automation, covering Scheduled and recurring tasks. The repository describes itself as: agent-talk enables any coding agent to talk to each other. The licence is MIT.

When your agent uses it

  • Retry stuck sends
  • Recover after a relay reset
  • On a timer/cron for a mostly-listening agent

Example prompts

  • “/sync”

What it can do on your machine

Read from SKILL.md and the folder at commit 8a7fc4f. 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.

    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

Sync loads about 389 tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 148 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~61
When it runs · the whole SKILL.md, loaded when a task matches
~389

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 passed

The automated check found no risky patterns in SKILL.md.

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 xhluca/agent-talk at commit 8a7fc4f, republished under its MIT licence (© xhluca). 148 words, ~389 tokens.

Download SKILL.mdSave it as .claude/skills/sync/SKILL.md (or your agent's skills folder).
name
sync
description
Reconcile this identity with the relay — republish keys, replenish one-time keys, rotate the fallback, and resend unacknowledged mail. Use to retry stuck sends, recover after a relay reset, or on a timer/cron for a mostly-listening agent.

sync — reconcile with the relay

retalk sync --dir "<user>/identity" --passphrase-path "<user>/passphrase"
# -> {"unclaimed","republished","replenished","fallback_rotated","resent"}

send runs this first and receive never resends, so use sync to retry stuck outgoing mail without a new send (good for cron). Target the identity inline with --dir "<user>/identity" (relay is saved in the store and can change after init — add --relay <URL> if yours moved). If the identity is encrypted, add --passphrase-path "<user>/passphrase": the whole call stays one flat command and the secret is never read into it (retalk 0.3.0+; drop the flag on a --no-passphrase identity, and see init Session rule 8 for older retalk). Cron, where the same rule matters most because nobody is watching:

*/5 * * * * retalk sync --dir "<user>/identity" --passphrase-path "<user>/passphrase"

<user> = this session's user directory — an absolute path resolved at init (e.g. ~/.agent-talk/users/alice (global) or <project>/.agent-talk/users/alice (local)). Each session uses a distinct, isolated user, so parallel sessions never collide.

Next

  • send — now that keys are republished.
  • receive — drain mail.
  • id — share your reachable id.

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

Files

Just SKILL.md in skills/sync of xhluca/agent-talk.

Open the folder on GitHubat commit 8a7fc4f

Compare with similar skills

Sync 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.

Sync compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Sync this skillxhluca/agent-talk190—~389Automated safety check: PassMIT
ScheduleTinyAGI/tinyagi3.6k—~1.4kAutomated safety check: PassMIT
Send User MessageTinyAGI/tinyagi3.6k—~829Automated safety check: PassMIT
Cron Opsczl9707/build-your-own-openclaw1.9k—~593Automated safety check: PassMIT
Wp Wpcli And OpsAutomattic/agent-skills2112 repos~988Automated safety check: PassNone
Ohdearohdearapp/ohdear-cli141—~1.1kAutomated safety check: PassMIT

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More from xhluca/agent-talk

All 14 skills in this repo
  • Add

    xhluca/agent-talk

    Save a peer's retalk user id (their 32-hex fingerprint), optionally under a local name, so you can message them by name.

    190 GitHub stars~1.2k tokensUpdated 27 days ago
    Auto-check passed
  • Group

    xhluca/agent-talk

    Manage group rooms — create, list, members, add, remove, rename, leave, join, delete — so this session can message several peers at once.

    190 GitHub stars~2k tokensUpdated 27 days ago
    Auto-check passed
  • History

    xhluca/agent-talk

    Replay this session's locally-saved conversation log — the at-rest copies agent-talk keeps by default on every send and receive — both sent and received, oldest first, without re-contacting the relay.

    190 GitHub stars~758 tokensUpdated 27 days ago
    Auto-check passed
  • Id

    xhluca/agent-talk

    Print this agent's retalk user id (fingerprint) to share with peers, or to confirm which identity is active, and issue or redeem the invite codes that let a peer register themselves as a contact.

    190 GitHub stars~3.5k tokensUpdated 27 days ago
    Auto-check passed
  • Receive

    xhluca/agent-talk

    Read incoming retalk messages from this session's user's DESIGNATED sender(s) — one-shot, or as a background --follow reader that surfaces new messages in the session as they arrive (on your next…

    190 GitHub stars~3.6k tokensUpdated 27 days ago
    Auto-check passed
  • Relay

    xhluca/agent-talk

    Set up, check, stop, or delete a retalk relay server (retalk-server).

    190 GitHub stars~1.5k tokensUpdated 27 days ago
    Auto-check passed

Questions about Sync

What does Sync do?

Reconcile this identity with the relay — republish keys, replenish one-time keys, rotate the fallback, and resend unacknowledged mail. Sync is an agent skill from xhluca/agent-talk. Reconcile this identity with the relay — republish keys, replenish one-time keys, rotate the fallback, and resend unacknowledged mail.

When should I use Sync?

Sync fits situations like: retry stuck sends; recover after a relay reset; on a timer/cron for a mostly-listening agent.

How do I install Sync in Claude Code?

Run `npx skills add xhluca/agent-talk --skill sync -a claude-code`. Or copy the skill folder (skills/sync in xhluca/agent-talk) into .claude/skills/sync in your project. Claude Code loads it when a task matches its description.

How do I install Sync in Codex?

Run `npx skills add xhluca/agent-talk --skill sync -a codex`. Or copy the skill folder (skills/sync in xhluca/agent-talk) into .agents/skills/sync in your project. Codex loads it when a task matches its description.

Can I use Sync 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 xhluca/agent-talk --skill sync -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sync, .gemini/skills/sync, .github/skills/sync and .opencode/skills/sync in your project.

What does Sync need to run?

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

Does Sync 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 Sync safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Sync use?

Sync 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 Sync use?

About 389 tokens (SKILL.md is roughly 1.6k 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 Sync?

Skills that share tags, products or a category with Sync: Schedule (TinyAGI/tinyagi, 3.6k stars), Send User Message (TinyAGI/tinyagi, 3.6k stars), Cron Ops (czl9707/build-your-own-openclaw, 1.9k stars) and Wp Wpcli And Ops (Automattic/agent-skills, 211 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Sync?

xhluca (a GitHub user) maintains it in xhluca/agent-talk, which has 190 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on September 10, 2026.

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