heartbeat

heartbeat is a skill for Claude Code from Aicoo-Team/AICOO-Skills. It costs 118 tokens per session (2,737 once invoked), scanned A, original, MIT.

A scheduled proactive loop for an Aicoo agent. It reads instructions from a HEARTBEAT.md file, checks connected workspace tools such as email, calendars, todos, and notes, then sends a short summary.

In plain words
What is it for?
Use it to run checks manually or on a schedule, review past runs, set the heartbeat policy, and edit the instructions that control what gets checked.
Why use it?
It removes the need to ask the agent to perform the same checks repeatedly. Duplicate summaries can be suppressed, and the default mode only reads data and reports findings.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Claude Code.

Part of the Aicoo Agent Skills plugin — 21 skills shipped together

Good fit Use it to run checks manually or on a schedule, review past runs, set the heartbeat policy, and edit the instructions that control what gets checked.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aicoo-team/aicoo-skills/heartbeat
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 Aicoo-Team/AICOO-Skills --skill heartbeat
Clone the repo
git clone --depth 1 https://github.com/Aicoo-Team/AICOO-Skills

Made for: Claude Code.

Or install Aicoo Agent Skills, the plugin that ships this one along with the rest of its 21 skills.

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 heartbeat

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/aicoo-team/aicoo-skills/heartbeat"><img src="https://agentmods.dev/badge/skills/aicoo-team/aicoo-skills/heartbeat.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 118 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,737 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 33
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 90
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 194
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
Origin original No closer match found 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 $0.00118 $0.02737
Opus 5 $0.00059 $0.01368
Sonnet 5 $0.00024 $0.00547
Haiku 4.5 $0.00012 $0.00274

Measured 11d ago against content hash 03eb5a3e7727, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

heartbeat scanned grade A with 1 finding 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 11d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s -X POST "https://www.aicoo.io/api/v1/heartbeat/run" \
skills/heartbeat/SKILL.md · 369 lines

How it starts

The opening of the file, as written. The whole thing — 369 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Heartbeat — Autonomous Agent Loop

Heartbeat is Aicoo's proactive engine. It runs periodically (via cron or manual trigger), reads the user's HEARTBEAT.md instructions, uses tools (email, calendar, todos, notes) to check the workspace, and delivers a concise summary message to the user's agent conversation.


Concepts

Concept Meaning
HEARTBEAT.md User-editable instruction file in /Memory/Self/. Defines what the agent checks each run.
Tier MESSAGES (default) = read-only checks + summary. ACTIONS = can take write actions (future).
Run A single execution of the heartbeat loop. Tracked in heartbeat_runs.
Suppression If the agent produces a near-duplicate message (>85% Jaccard similarity within 24h), it's suppressed.
Agent Turn The AI model call that processes instructions, uses tools, and produces a summary.

API Endpoints

Base: https://www.aicoo.io/api/v1
Auth: Authorization: Bearer ${AICOO_API_KEY:-$PULSE_API_KEY}


Run Heartbeat (manual trigger)

curl -s -X POST "https://www.aicoo.io/api/v1/heartbeat/run" \
  -H "Authorization: Bearer $AICOO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}' | jq .

Optional body:

Field Type Notes
tier string ACTIONS or MESSAGES. If set, updates policy before running.
dryRun boolean Reserved for future use.

Response:

{
  "success": true,
  "result": {
    "runId": 42,
    "tier": "MESSAGES",
    "text": "All clear — 2 emails in inbox (neither urgent), standup at 2 PM, 1 overdue todo: 'Review PR #312'.",
    "suppressed": false,
    "suppressReason": null,
    "delivered": true,
    "toolCalls": 4,
    "model": "gpt-5-mini",
    "elapsedMs": 3200
  }
}

Get Heartbeat Policy

curl -s "https://www.aicoo.io/api/v1/heartbeat/policy" \
  -H "Authorization: Bearer $AICOO_API_KEY" | jq .

Response:

{
  "success": true,
  "policy": {
    "tier": "MESSAGES"
  }
}

Read the full file on GitHub · 369 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. 11d ago First seen · 369 lines · 118 tokens per session scan A 03eb5a3e7727

Subscribe to this mod's changes

heartbeat is a skill published in the GitHub repository Aicoo-Team/AICOO-Skills (35 stars, last pushed 1mo ago), licensed MIT. It adds 118 tokens to every session and 2,737 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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