nostr-waitlist

nostr-waitlist is a skill for Claude Code from agustinkassis/claude-skills. It costs 144 tokens per session (2,954 once invoked), scanned B, original, MIT.

A setup workflow for adding an email and Nostr waitlist to a Next.js website. Nostr is a decentralized messaging system; the workflow can collect email addresses, user identifiers, or NIP-05 identities and store or send them through selected destinations.

In plain words
What is it for?
Use it to add an early-access signup flow, encrypted Nostr waitlist records or messages, welcome emails, and connections to services such as a database, webhook, or email audience.
Why use it?
It removes the need to build the signup form, server routes, encryption handling, and storage connections from scratch.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Part of the claude-skills plugin — 1 skill shipped together

Good fit Use it to add an early-access signup flow, encrypted Nostr waitlist records or messages, welcome emails, and connections to services such as a database, webhook, or email audience.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/agustinkassis/claude-skills/nostr-waitlist
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 agustinkassis/claude-skills --skill nostr-waitlist
Clone the repo
git clone --depth 1 https://github.com/agustinkassis/claude-skills

Made for: Claude Code.

Or install claude-skills, the plugin that ships this one along with the rest of its 1 skill.

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 nostr-waitlist

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/agustinkassis/claude-skills/nostr-waitlist"><img src="https://agentmods.dev/badge/skills/agustinkassis/claude-skills/nostr-waitlist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 144 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,954 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00144 $0.02954
Opus 5 $0.00072 $0.01477
Sonnet 5 $0.00029 $0.00591
Haiku 4.5 $0.00014 $0.00295

Measured 10d ago against content hash ca8ad22ef36c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade B, and why

nostr-waitlist scanned grade B with 2 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 10d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/detect-stack.sh, scripts/install-deps.sh, scripts/smoke-test.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

- if yes: `pnpm dev` background, wait 4s, `curl -X POST localhost:3000/api/waitlist/check -H 'Content-Type: application/json' -d '{"contact":"[email protected]"}'`

Makes network callslowCapability

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

- "want me to start the dev server and curl `/api/waitlist/check`? (y/n)"
skills/nostr-waitlist/SKILL.md · 257 lines

How it starts

The opening of the file, as written. The whole thing — 257 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Nostr Waitlist Skill

Scaffolds a polished email + Nostr "early access" flow into the host Next.js project. The output is opinionated about UX (Radix dialog, three-state form based on email vs npub vs NIP-05, confetti on success) and unopinionated about destinations — the user picks any combination of bundled adapters (Resend Audiences, webhook, Postgres, Supabase, SQLite) or writes their own satisfying the small Destination interface.

References

  • references/nostr-keys.md — how to generate an nsec, what to put in env
  • references/destination-adapters.md — the Destination interface + a worked example of a custom adapter
  • references/db-schema.sql — canonical waitlist table for Postgres + SQLite
  • references/nip-cheatsheet.md — quick recap of NIP-04 / NIP-05 / NIP-44

Phase 1 — Detect stack

Before asking the user anything, gather facts about the host project.

# Run from the project root the user is currently in
cat package.json | grep -E '"(next|react)"' || echo "NOT_NEXT"
ls app/ 2>/dev/null && echo "HAS_APP"
ls pages/api/ 2>/dev/null && echo "HAS_PAGES_API"
ls tsconfig.json 2>/dev/null && echo "HAS_TS"
ls tailwind.config.ts tailwind.config.js tailwind.config.mjs 2>/dev/null && echo "HAS_TAILWIND"
ls pnpm-lock.yaml yarn.lock package-lock.json bun.lockb 2>/dev/null
ls components/ui/dialog.tsx components/ui/button.tsx components/ui/input.tsx 2>/dev/null

Decide:

  • NOT_NEXT → stop. Tell the user "this skill targets Next.js. Detected: ." and exit.
  • HAS_APP present → use App Router templates (templates/api/app-router/).
  • Only HAS_PAGES_API → use Pages Router templates.
  • Both present → ask the user which to target (Modal vs section can also live in either; route handler placement is what matters).
  • Package manager: pnpm-lock → pnpm, yarn.lock → yarn, package-lock.json → npm, bun.lockb → bun. Default npm if none found.
  • shadcn primitives detected → set EMIT_UI = false. Otherwise EMIT_UI = true.

Read the full file on GitHub · 257 lines

Files

What ships with it

30 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.

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. 10d ago First seen · 257 lines · 144 tokens per session scan B ca8ad22ef36c

Subscribe to this mod's changes

nostr-waitlist is a skill published in the GitHub repository agustinkassis/claude-skills (2 stars, last pushed 4mo ago), licensed MIT. It adds 144 tokens to every session and 2,954 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.