Echo Agent is a self-hosted, long-running AI agent that connects language models, tools, memory, permissions, and messaging channels in one system. Individuals and teams use it for private automation that retains context across sessions, develops skills, schedules tasks, and requires approval for high-risk actions.
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 fuyuxiang/echo-agent --skill notion-syncgit clone --depth 1 https://github.com/fuyuxiang/echo-agentWrote 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/fuyuxiang/echo-agent/notion-sync)<a href="https://agentmods.dev/skills/fuyuxiang/echo-agent/notion-sync"><img src="https://agentmods.dev/badge/skills/fuyuxiang/echo-agent/notion-sync/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/fuyuxiang/echo-agent/notion-sync"><img src="https://agentmods.dev/badge/skills/fuyuxiang/echo-agent/notion-sync.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 5 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 43 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 52 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 43 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 48 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 52 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.
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 | $0.00023 | $0.00521 |
| Opus 5.5 | $0.00009 | $0.00208 |
| Sonnet 5.5 | $0.00005 | $0.00104 |
| Haiku 4.5 | $0.00002 | $0.00052 |
Grade B, and why
notion-sync scanned grade B 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 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.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
resp = httpx.post("https://api.notion.com/v1/search", What it actually says
Notion Sync
Notion API integration for pages, databases, and content management.
Setup
- Create integration at https://www.notion.so/my-integrations
- Get Internal Integration Token
- Share target pages/databases with the integration
- Set environment:
export NOTION_API_TOKEN=secret_xxx
Script
python3 scripts/notion_client.py --token secret_xxx databases
python3 scripts/notion_client.py --token secret_xxx query <database-id> --limit 20
python3 scripts/notion_client.py --token secret_xxx create <database-id> "Page Title" --content "Body text"
API Usage
import httpx
HEADERS = {
"Authorization": f"Bearer {NOTION_API_TOKEN}",
"Notion-Version": "2022-06-28",
"Content-Type": "application/json",
}
# Search
resp = httpx.post("https://api.notion.com/v1/search",
headers=HEADERS,
json={"query": "project plan"})
# Read page blocks
resp = httpx.get(f"https://api.notion.com/v1/blocks/{page_id}/children",
headers=HEADERS)
# Create page
resp = httpx.post("https://api.notion.com/v1/pages",
headers=HEADERS,
json={
"parent": {"page_id": parent_id},
"properties": {"title": [{"text": {"content": "New Page"}}]},
"children": [
{"paragraph": {"rich_text": [{"text": {"content": "Hello"}}]}}
]
})
Block Types
| Type | Use |
|---|---|
| paragraph | Normal text |
| heading_1/2/3 | Headers |
| bulleted_list_item | Bullet points |
| numbered_list_item | Numbered lists |
| code | Code blocks |
| toggle | Collapsible sections |
| to_do | Checkboxes |
Common Workflows
- Save chat notes to Notion page
- Query reading list database
- Create daily journal entry
- Append meeting notes from template
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 81 lines · 23 tokens per session scan B c0ffa9b298ae
notion-sync is a skill published in the GitHub repository fuyuxiang/echo-agent (1,035 stars, last pushed today), licensed MIT. It adds 23 tokens to every session and 521 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (sends data to an external url). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
agent-state-bar
A design guide for an agent status bar: a short, automatically updated summary of progress, remaining tasks, tool counts, errors, and system state placed near the latest model input.
pptx
A guide for turning a paper, outline, or structured text into a PowerPoint presentation. It covers an 8–12-slide structure, concise slide points, and generation of a .pptx file.
knowledge-org
A guide to organising large bodies of knowledge so an AI system can navigate relationships, summaries, and layers instead of searching only flat text chunks. It covers tree indexes, knowledge graphs, file-like structures, incremental updates, and long-term memory layouts.
memory-system
A guide to giving an AI agent persistent, user-specific memory across conversations. It covers what to remember, how to store it, how to update or compress it, and when to use memory instead of a shared knowledge base.
context-compression
A guide to shortening the information an agent carries between steps. It explains how to replace large tool outputs and old conversation details with compact, useful summaries while preserving important decisions and constraints.
bo-runbook
A reusable step-by-step operating manual for a repeated task or handoff. It covers prerequisites, normal steps, checks that show success, failure handling, and escalation when those details are provided.