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 jeremylongshore/claude-code-slack-channel --skill installgit clone --depth 1 https://github.com/jeremylongshore/claude-code-slack-channelWrote 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/jeremylongshore/claude-code-slack-channel/install)<a href="https://agentmods.dev/skills/jeremylongshore/claude-code-slack-channel/install"><img src="https://agentmods.dev/badge/skills/jeremylongshore/claude-code-slack-channel/install/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/jeremylongshore/claude-code-slack-channel/install"><img src="https://agentmods.dev/badge/skills/jeremylongshore/claude-code-slack-channel/install.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00076 | $0.02336 |
| Opus 5.5 | $0.00030 | $0.00934 |
| Sonnet 5.5 | $0.00015 | $0.00467 |
| Haiku 4.5 | $0.00008 | $0.00234 |
Grade A, and why
install 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
compatibility: Requires a current Claude Code build with Channels support and either claude.ai or Anthropic Console authentication, Bun >= 1.0 (Node.js fallback supported), and a Slack workspace where you can create apps How it starts
The opening of the file, as written. The whole thing — 259 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/slack-channel:install
Overview
Run the CCSC lifecycle from fresh installation through safe teardown. With no argument, execute the complete install walkthrough.
| Mode | Purpose |
|---|---|
install |
Complete fresh-install walkthrough (default) |
doctor |
Read-only health check |
verify |
Slack-to-Claude-to-Slack round trip |
repair |
Repair only deterministic local findings |
manifest |
Write an importable Slack app manifest |
reset |
Archive access/session state and pair again |
tour |
Explain the product without changing anything |
uninstall |
Archive local state and explain Slack revocation |
Delegate token storage to /slack-channel:configure and pairing to
/slack-channel:access pair. Do not duplicate those security-sensitive flows.
Prerequisites
Before installation, verify:
- Runtime: Bun 1.0 or newer. Node.js 20+ and Docker 24+ are documented fallbacks.
- Claude Code: use a current build whose
claude --helpincludes--channels. - Anthropic authentication: use either a
claude.aiaccount or an Anthropic Console API key. Team and Enterprise organizations must enable Channels. Bedrock, Google Cloud Agent Platform, and Microsoft Foundry are unsupported for Channels. - Slack: use a workspace where the operator may create and install apps.
Run command -v and version/help checks without modifying the machine. Read
references/prerequisites.md for exact checks
and fallback paths. doctor and repair additionally require curl and jq.
Authentication
Keep the two authentication layers separate:
- Claude Code: authenticate through
claude.aior Anthropic Console. For Team and Enterprise, confirm an Owner enabled Channels or deployedchannelsEnabled: true. - Slack: use a Bot User OAuth Token (
xoxb-...) and an app-level token (xapp-...) withconnections:write. Store both only through/slack-channel:configure; never print or commit them.
What ships with it
4 files 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 Changed · -245 lines · -18 tokens per session scan D → A abaa9b06d9c4
- 2mo ago First seen · 504 lines · 94 tokens per session scan D 6768ed54b3e6
install is a skill published in the GitHub repository jeremylongshore/claude-code-slack-channel (42 stars, last pushed 3d ago), licensed Apache-2.0. It adds 76 tokens to every session and 2,336 once invoked, about $0.0003 per session on Opus 5.5. 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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c-slack
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c-apps
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cloud-backup
A guide to backing up files to cloud object storage such as Amazon S3 or Alibaba OSS, including copying, restoring, encryption, storage classes, and retention rules.
forge-cli
A command-line management tool for Forge Hub, a service that connects agent instances to chat channels and routes messages between them.
subagent-driven-development
Execute plans via delegatetask subagents (2-stage review).