nostr-setup

nostr-setup is a skill for Claude Code, Codex from oguzbilgic/kern-ai. It costs 30 tokens per session (967 once invoked), scanned A, original, no licence file.

A setup tool that creates a Nostr identity and stores its settings in .kern/.env. Nostr is a decentralised messaging protocol that uses public relay servers.

In plain words
What is it for?
Use it to prepare an agent for direct messages over public Nostr relays.
Why use it?
It removes the manual setup needed for an agent to receive direct messages through Nostr.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to prepare an agent for direct messages over public Nostr relays.

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Install with agentmods
npx agentmods add skills/oguzbilgic/kern-ai/nostr-setup
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 oguzbilgic/kern-ai --skill nostr-setup
Clone the repo
git clone --depth 1 https://github.com/oguzbilgic/kern-ai

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 nostr-setup

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/oguzbilgic/kern-ai/nostr-setup"><img src="https://agentmods.dev/badge/skills/oguzbilgic/kern-ai/nostr-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 967 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00030 $0.00967
Opus 5 $0.00015 $0.00483
Sonnet 5 $0.00006 $0.00193
Haiku 4.5 $0.00003 $0.00097

Measured 4d ago against content hash fa0f5222ddd1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

nostr-setup 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 4d 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.

- **`no relays reachable`** — outbound WSS blocked, or relay list has a typo. `curl -sI https://relay.damus.io` from the agent host to check egress.
skills/nostr-setup/SKILL.md · 83 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 4d ago First seen · 83 lines · 30 tokens per session scan A fa0f5222ddd1

Subscribe to this mod's changes

nostr-setup is a skill published in the GitHub repository oguzbilgic/kern-ai (67 stars, last pushed yesterday), with no licence file. It adds 30 tokens to every session and 967 once invoked, about $0.0002 per session on Opus 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 2026-09-07.