pywayne-lark-custom-bot

pywayne-lark-custom-bot is a skill for Claude Code, Codex from wangyendt/wayne-skills. It costs 97 tokens per session (5,996 once invoked), scanned A, original, MIT.

A Python wrapper for sending one-way messages to Feishu or Lark group chats through a webhook. Feishu and Lark are collaboration and messaging platforms.

In plain words
What is it for?
Sending text, images, rich posts, interactive cards, or shared chat content for alerts, reports, and scheduled updates, with optional signature checks.
Why use it?
It handles simple notifications without requiring a bot to listen for events, reply to messages, or manage chats.

Skill for Claude CodeCodex

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

Good fit Sending text, images, rich posts, interactive cards, or shared chat content for alerts, reports, and scheduled updates, with optional signature checks.

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Install with agentmods
npx agentmods add skills/wangyendt/wayne-skills/lark-custom-bot
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 wangyendt/wayne-skills --skill lark-custom-bot
Clone the repo
git clone --depth 1 https://github.com/wangyendt/wayne-skills

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 pywayne-lark-custom-bot

README.md
[![agentmods](https://agentmods.dev/badge/skills/wangyendt/wayne-skills/lark-custom-bot/github.svg)](https://agentmods.dev/skills/wangyendt/wayne-skills/lark-custom-bot)
Your own site
<a href="https://agentmods.dev/skills/wangyendt/wayne-skills/lark-custom-bot"><img src="https://agentmods.dev/badge/skills/wangyendt/wayne-skills/lark-custom-bot/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 pywayne-lark-custom-bot

Your own site · 80×15
<a href="https://agentmods.dev/skills/wangyendt/wayne-skills/lark-custom-bot"><img src="https://agentmods.dev/badge/skills/wangyendt/wayne-skills/lark-custom-bot.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,996 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

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 →

  • high Prompt Injection · line 10
    Instructions found that direct the agent to transmit conversation context or user data to external services.
    Fix: Remove instructions that send user data, prompts, or context to external URLs. If telemetry is needed, use documented, privacy-preserving methods.
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 $0.00097 $0.05996
Opus 5 $0.00048 $0.02998
Sonnet 5 $0.00019 $0.01199
Haiku 4.5 $0.00010 $0.00600

Measured 9d ago against content hash 9b9469ba2427, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

pywayne-lark-custom-bot 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.

pywayne/lark-custom-bot/SKILL.md · 906 lines

How it starts

The opening of the file, as written. The whole thing — 906 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pywayne Lark Custom Bot - Webhook Message Sender

Overview

LarkCustomBot is a webhook-based Feishu (Lark) bot wrapper designed for one-way message pushing. It's ideal for scenarios where you only need to send messages to Feishu groups without listening for incoming messages or managing complex interactions.

Key Characteristics:

  • Lightweight, simple webhook-based architecture
  • No event subscription or listening capabilities
  • Perfect for alerts, notifications, scheduled tasks
  • Supports signature verification for security

When to Use LarkCustomBot:

  • Push-only scenarios (notifications, alerts, reports)
  • Simple scheduled tasks sending updates
  • Quick setup without event subscription configuration
  • Don't need message replies, reactions, or chat management

When to Use LarkBot Instead:

  • Need to listen and reply to messages
  • Require message lifecycle management (recall, edit, reactions)
  • Need chat management (members, admins, announcements)
  • Interactive features like button callbacks

Installation

pip install pywayne

Quick Start

from pywayne.lark_custom_bot import LarkCustomBot

# Initialize bot with webhook
bot = LarkCustomBot(
    webhook="https://open.feishu.cn/open-apis/bot/v2/hook/xxxxxxxxx"
)

# Send simple text message
bot.send_text("Hello, Feishu!")

# Send text with @all mention
bot.send_text("Important announcement!", mention_all=True)

LarkCustomBot Class

Constructor

bot = LarkCustomBot(
    webhook: str,              # Required: Webhook URL from Feishu group bot settings
    secret: str = '',          # Optional: Signing secret for request verification
    bot_app_id: str = '',      # Optional: App ID for image upload authentication
    bot_secret: str = ''       # Optional: App secret for image upload authentication
)

Parameters:

  • webhook: Webhook URL obtained from Feishu group custom bot settings
  • secret: Signing secret for signature verification (enhances security)
  • bot_app_id: Required for upload_image() and upload_image_from_cv2()
  • bot_secret: Required for upload_image() and upload_image_from_cv2()

Read the full file on GitHub · 906 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 · 906 lines · 97 tokens per session scan A 9b9469ba2427

Subscribe to this mod's changes

pywayne-lark-custom-bot is a skill published in the GitHub repository wangyendt/wayne-skills (8 stars, last pushed 13d ago), licensed MIT. It adds 97 tokens to every session and 5,996 once invoked, about $0.0005 per session on Opus 5. 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 2026-08-31.

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