agent-observe

agent-observe is a skill for Claude Code, Codex from gabrielmoreira/agent-skills-mirror. It costs 41 tokens per session (631 once invoked), scanned A, a copy of agent-observe, MIT.

A read-only tool for viewing the current coding agent's related sessions: its parent, siblings, children, and itself. It can show their status and limited recent-message previews.

In plain words
What is it for?
Use it to discover reachable agents, inspect a session, and review recent messages from an agent.
Why use it?
It provides a safe way to understand a group of cooperating agents without changing, steering, or stopping their sessions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to discover reachable agents, inspect a session, and review recent messages from an agent.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gabrielmoreira/agent-skills-mirror/agent-observe
Install

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.

Any agent
npx skills add gabrielmoreira/agent-skills-mirror --skill agent-observe
Clone the repo
git clone --depth 1 https://github.com/gabrielmoreira/agent-skills-mirror

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for agent-observe

README.md
[![agentmods](https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/agent-observe/github.svg)](https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/agent-observe)
Your own site
<a href="https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/agent-observe"><img src="https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/agent-observe/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.

agentmods 80×15 button for agent-observe

Your own site · 80×15
<a href="https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/agent-observe"><img src="https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/agent-observe.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 631 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00041 $0.00631
Opus 5.5 $0.00016 $0.00252
Sonnet 5.5 $0.00008 $0.00126
Haiku 4.5 $0.00004 $0.00063

Measured 9d ago against content hash 156aa812ed00, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-observe 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 9d 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.

Origin

This is a copy

100% identical to agent-observe — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

mirrors/repos/7df-lab@claw-code-rust/crates/skills/assets/bundled/agent-observe/SKILL.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Observe

Observe the current agent's nuclear family through the local daemon: parent, siblings, direct children, and self. list_agents is the one family roster and covers every member agent_message.send can reach. get_agent and recent_messages hydrate an inactive child before reading it. They cannot read a root sibling that has no live session in this worker. This skill is read-only: it can list family sessions, inspect one session, and fetch bounded recent message previews. It cannot prompt, steer, clear, kill, rename, or otherwise mutate another session.

Call directly from the kernel:

roster = await agent_observe.list_agents()
child = next(
    (
        item
        for item in roster.get("agents", [])
        if item.get("relationship") == "child"
    ),
    None,
)
if child is not None:
    name = child.get("sessionName") or child["sessionId"]
    worker = await agent_observe.get_agent(name)
    recent = await agent_observe.recent_messages(name, limit=6)

API

  • await agent_observe.list_agents() returns current and agents, the full nuclear family: parent, siblings, and direct children, active or not. Each agent carries sessionId, optional sessionName, relationship (parent/sibling/child/self), status, isSessionActive, and the counts and message previews known for it: latestMessage for a live session, firstMessage for an inactive child. A member with no live session has no activeSessionId and no live detail; address it with agent_message.send using its relationship plus its sessionName, or its sessionId when the member has no name.
  • await agent_observe.get_agent(target) returns agent, where agent contains one live agent summary. target is resolved like other live-session selectors: active id, session id/name, or unambiguous suffix.
  • await agent_observe.recent_messages(target, limit=8, max_chars=800) returns up to limit recent bounded message previews for the target session. limit must be 1-50, and max_chars must be 80-2000.

Read the full file on GitHub · 61 lines

Changes

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.

  1. 9d ago First seen · 61 lines · 41 tokens per session scan A 156aa812ed00

Subscribe to this mod's changes

agent-observe is a skill published in the GitHub repository gabrielmoreira/agent-skills-mirror (19 stars, last pushed yesterday), licensed MIT. It adds 41 tokens to every session and 631 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to agent-observe, differing in 0 lines, and is treated as a copy.

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