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 pbc-os/smb-starter-kit --skill slack-directorygit clone --depth 1 https://github.com/pbc-os/smb-starter-kitWrote 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/pbc-os/smb-starter-kit/slack-directory)<a href="https://agentmods.dev/skills/pbc-os/smb-starter-kit/slack-directory"><img src="https://agentmods.dev/badge/skills/pbc-os/smb-starter-kit/slack-directory/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/pbc-os/smb-starter-kit/slack-directory"><img src="https://agentmods.dev/badge/skills/pbc-os/smb-starter-kit/slack-directory.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 | $0.00023 | $0.01662 |
| Opus 5.5 | $0.00009 | $0.00665 |
| Sonnet 5.5 | $0.00005 | $0.00332 |
| Haiku 4.5 | $0.00002 | $0.00166 |
Grade A, and why
slack-directory 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 2mo 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.
bins: ["curl", "jq"] How it starts
The opening of the file, as written. The whole thing — 227 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Slack Directory Lookup
Why This Skill Exists
The Problem:
When someone says "DM Sarah about the budget" or "add Mike to the channel," you need a Slack user ID — not a name. Slack's API requires IDs for all user operations, but humans think in names.
The Solution:
This skill lets you search Slack users by partial name (first, last, display name, or username), handles multiple matches gracefully, and builds a local cache so you never look up the same person twice.
Real-world example:
"Hey, message the new hire about onboarding"
→ "What's their name?"
→ "Jamie something... started last week"
→ Run lookup for "Jamie" → Find Jamie Chen (U09ABC123)
→ Cache the mapping → Send the message
When to Use This Skill
| Situation | Use This Skill |
|---|---|
| Need to DM someone by name | ✅ Yes |
| Need to @mention someone | ✅ Yes |
| Adding users to channels | ✅ Yes |
| Building a people directory | ✅ Yes |
| You already have the Slack ID | ❌ No (just use it) |
How It Works
Step 1: Check Your Cache First
Before calling the API, check if you already have the mapping cached (in TOOLS.md, a JSON file, or wherever you store local state):
### People Directory
| Name | Slack ID | Notes |
|------|----------|-------|
| Sarah Chen | U09ABC123 | Engineering |
| Mike Brown | U07XYZ789 | Sales lead |
Why cache? Slack API calls cost time and rate limits. Most workspaces have the same 20-50 people you interact with regularly. Cache them once, use forever.
Step 2: Fuzzy Search via API
If not cached, run the lookup:
./lookup.sh "jamie"
The script searches across:
real_name(e.g., "Jamie Chen")display_name(e.g., "Jamie C")username(e.g., "jamie.chen")
Case-insensitive, partial match.
Step 3: Handle Results
Single match → Use it and cache it:
✅ Single match found:
| Jamie Chen | U09ABC123 | [email protected] |
Multiple matches → Clarify with the user:
⚠️ Multiple matches for 'jamie' (2 found):
1. Jamie Chen (U09ABC123) - [email protected]
2. Jamie Rodriguez (U08DEF456) - [email protected]
Which one did you mean?
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.
- 2mo ago First seen · 227 lines · 23 tokens per session scan A c7d52259d036
slack-directory is a skill published in the GitHub repository pbc-os/smb-starter-kit (10 stars, last pushed 5mo ago), licensed MIT. It adds 23 tokens to every session and 1,662 once invoked, about $0.0001 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 2026-08-31.
slack-directory compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| slack-directorypbc-os/smb-starter-kit | Skill | 10 | 5mo ago | MIT | A | 23 | Claude Code, Codex |
| imagegenopenai/codex | Skill | 133k | yesterday | Apache-2.0 | A | 113 | Codex |
| playwright-climicrosoft/playwright | Skill | 99k | yesterday | Apache-2.0 | A | 19 | Claude Code |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | 4d ago | MIT | A | 200 | Claude Code, Codex |
| systematic-debuggingobra/superpowers | Skill | 313k | 3d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | yesterday | MIT | A | 95 | Claude Code |
| next-partial-prefetching-adoptionvercel/next.js | Skill | 143k | yesterday | MIT | A | 103 | Claude Code |