Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Zfinix/aster --skill aster-chat-sessionsgit clone --depth 1 https://github.com/Zfinix/asterWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/zfinix/aster/aster-chat-sessions)<a href="https://agentmods.dev/skills/zfinix/aster/aster-chat-sessions"><img src="https://agentmods.dev/badge/skills/zfinix/aster/aster-chat-sessions/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/zfinix/aster/aster-chat-sessions"><img src="https://agentmods.dev/badge/skills/zfinix/aster/aster-chat-sessions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00557 |
| Opus 5.5 | $0.00000 | $0.00223 |
| Sonnet 5.5 | $0.00000 | $0.00111 |
| Haiku 4.5 | $0.00000 | $0.00056 |
Grade A, and why
aster-chat-sessions scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
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
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
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
aster sessions # list saved sessions for this repo
aster sessions show <id> # full transcript
aster sessions --json # machine-readable (also on `show`)
Durable memory
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.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 52 lines · 0 tokens per session scan A d7798dccb616
aster-chat-sessions is a skill published in the GitHub repository Zfinix/aster (133 stars, last pushed 2d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 557 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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