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Agent skill

Aster Chat Sessions

by Zfinix in Zfinix/aster

Drive aster chat programmatically and manage sessions and memory: one-shot --print/--json answers, --messages-json for caller-owned history, --continue and --session persistence, --allow-edits…

Apache-2.0Auto-check passed

Install Aster Chat Sessions

skills CLI
$ npx skills add Zfinix/aster --skill aster-chat-sessions -a claude-code

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

GitHub CLI
$ gh skill install Zfinix/aster aster-chat-sessions --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/Zfinix/aster.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/aster-chat-sessions .claude/skills/aster-chat-sessions && 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
aster-chat-sessions
GitHub stars
113
Token cost
~591 tokens
SKILL.md length
141 words
Files
1
Skills in repo
19
Repo updated
First seen
Licence
Apache-2.0

At a glance

Drive aster chat programmatically and manage sessions and memory: one-shot --print/--json answers, --messages-json for caller-owned history, --continue and --session persistence, --allow-edits…

  • Scripting aster chat
  • SKILL.md covers One-shot answers, History and persistence, Edits and Inspecting sessions, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Integrating it into an editor

What it does

Aster Chat Sessions is an agent skill from Zfinix/aster. Drive aster chat programmatically and manage sessions and memory: one-shot --print/--json answers, --messages-json for caller-owned history, --continue and --session persistence, --allow-edits gating, and the sessions/memory commands. Use when scripting aster chat, integrating it into an editor or agent, or inspecting saved transcripts.

Its SKILL.md is about 590 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: An open-source agent harness for software work. The licence is Apache-2.0.

When your agent uses it

  • Scripting aster chat
  • Integrating it into an editor
  • Inspecting saved transcripts

Example prompts

  • “/aster-chat-sessions”

What it can do on your machine

Read from SKILL.md and the folder at commit f77a5b4. 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 bash).

    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

Aster Chat Sessions loads about 591 tokens when it runs. Until then it costs about 90 tokens; SKILL.md has 141 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~90
When it runs · the whole SKILL.md, loaded when a task matches
~591

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 Zfinix/aster at commit f77a5b4, republished under its Apache-2.0 licence (© Zfinix). 141 words, ~591 tokens.

Download SKILL.mdSave it as .claude/skills/aster-chat-sessions/SKILL.md (or your agent's skills folder).
name
aster-chat-sessions
description
Drive aster chat programmatically and manage sessions and memory: one-shot --print/--json answers, --messages-json for caller-owned history, --continue and --session persistence, --allow-edits gating, and the sessions/memory commands. Use when scripting aster chat, integrating it into an editor or agent, or inspecting saved transcripts.

Chat, sessions, and memory

aster chat talks to the review agent with read/search tools over the repo. In a terminal it opens a TUI; from scripts and agents always use the one-shot forms.

One-shot answers

sh
aster chat -p "why is finding 2 critical?"       # plain text (default when piped)
aster chat --json "summarize the last review"    # {"reply", "edits", "usage"}
aster chat --no-tools -p "explain this error"    # plain LLM turn, no repo tools

--model overrides the model for the turn (else ASTER_MODEL, else aster.yaml).

History and persistence

sh
aster chat --continue -p "and the second one?"   # seed the most recent session's history
aster chat --session <ID> -p "..."               # persist this turn into a session by id
aster chat --messages-json msgs.json -p "..."    # caller-owned history (or `-` for stdin)

--messages-json takes a JSON array of {"role","content"} with roles user | assistant | system. Combined with --session, the session only records the turn (the caller owns history); --session alone also seeds the session's prior history.

Edits

--allow-edits exposes an edit_file tool to the agent, gated by the permissions block in aster.yaml (deny-first globs, protected paths). Leave it off unless the task is explicitly to change files, and diff the working tree afterward.

Inspecting sessions

sh
aster sessions                 # list saved sessions for this repo
aster sessions show <id>       # full transcript
aster sessions --json          # machine-readable (also on `show`)

Durable memory

sh
aster memory                        # list stored memory
aster memory add "we use pnpm"      # append a fact to project memory
aster memory add --title deploy "…" # save a titled block
aster memory --json                 # machine-readable

Memory is per-repo and fed to future chats and reviews; store durable facts (conventions, constraints), not one-off context.

© Zfinix, Apache-2.0. 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/aster-chat-sessions of Zfinix/aster.

Open the folder on GitHubat commit f77a5b4

Compare with similar skills

Aster Chat Sessions 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.

Aster Chat Sessions compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Aster Chat Sessions this skillZfinix/aster113—~591Automated safety check: PassApache-2.0
Session Handoffsickn33/agentic-awesome-skills47k—~1.8kAutomated safety check: NotesMIT
Drive Automation Sessionjeremylongshore/tons-of-skills-marketplace2.8k—~5.9kAutomated safety check: PassMIT
Sessionanthropics/claude-for-legal9.6k3 repos~478Automated safety check: PassApache-2.0
SEO Programmaticsickn33/agentic-awesome-skills47k2 repos~2.4kAutomated safety check: NotesMIT
Session History Searchslopus/happy24k—~3.1kAutomated safety check: PassMIT

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All 19 skills in this repo

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  • Aster Config

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  • Aster Review CI

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Questions about Aster Chat Sessions

What does Aster Chat Sessions do?

Drive aster chat programmatically and manage sessions and memory: one-shot --print/--json answers, --messages-json for caller-owned history, --continue and --session persistence, --allow-edits…. Aster Chat Sessions is an agent skill from Zfinix/aster. Drive aster chat programmatically and manage sessions and memory: one-shot --print/--json answers, --messages-json for caller-owned history, --continue and --session persistence, --allow-edits gating, and the sessions/memory commands.

When should I use Aster Chat Sessions?

Aster Chat Sessions fits situations like: scripting aster chat; integrating it into an editor; inspecting saved transcripts.

How do I install Aster Chat Sessions in Claude Code?

Run `npx skills add Zfinix/aster --skill aster-chat-sessions -a claude-code`. Or copy the skill folder (skills/aster-chat-sessions in Zfinix/aster) into .claude/skills/aster-chat-sessions in your project. Claude Code loads it when a task matches its description.

How do I install Aster Chat Sessions in Codex?

Run `npx skills add Zfinix/aster --skill aster-chat-sessions -a codex`. Or copy the skill folder (skills/aster-chat-sessions in Zfinix/aster) into .agents/skills/aster-chat-sessions in your project. Codex loads it when a task matches its description.

Can I use Aster Chat Sessions 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 Zfinix/aster --skill aster-chat-sessions -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/aster-chat-sessions, .gemini/skills/aster-chat-sessions, .github/skills/aster-chat-sessions and .opencode/skills/aster-chat-sessions in your project.

What does Aster Chat Sessions need to run?

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

Does Aster Chat Sessions 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 Aster Chat Sessions 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 Aster Chat Sessions use?

Aster Chat Sessions is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Aster Chat Sessions use?

About 591 tokens (SKILL.md is roughly 2.4k 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 Aster Chat Sessions?

Skills that share tags, products or a category with Aster Chat Sessions: Session Handoff (sickn33/agentic-awesome-skills, 47k stars), Drive Automation Session (jeremylongshore/tons-of-skills-marketplace, 2.8k stars), Session (anthropics/claude-for-legal, 9.6k stars) and SEO Programmatic (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 Aster Chat Sessions?

Zfinix (a GitHub user) maintains it in Zfinix/aster, which has 113 GitHub stars. The repository holds 19 skills in this directory. The repository was last updated on October 9, 2026.

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