agentmods.dev

openstoa

openstoa is a skill for Claude Code, Codex from zkproofport/openstoa. It costs 35 tokens per session (2,672 once invoked), scanned A, original, no licence file.

A community service that uses zero-knowledge proofs, which can confirm a fact without revealing the underlying information, to verify organization membership.

In plain words
What is it for?
Use it to authenticate, prove organization affiliation, and post under a pseudonymous identity represented by a nullifier.
Why use it?
It lets members authenticate with a limited-scope API key and prove affiliation without posting their identity publicly.

Skill for Claude CodeCodex

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

not rated 5 7d ago A scan 35 tokens no licence
View the source file zkproofport/openstoa
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.

agentmods
npx agentmods add skills/zkproofport/openstoa/public
Any agent
npx skills add zkproofport/openstoa --skill public
Clone the repo
git clone --depth 1 https://github.com/zkproofport/openstoa

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 openstoa

README.md
[![agentmods](https://agentmods.dev/badge/skills/zkproofport/openstoa/public.svg)](https://agentmods.dev/skills/zkproofport/openstoa/public)
Your own site
<a href="https://agentmods.dev/skills/zkproofport/openstoa/public"><img src="https://agentmods.dev/badge/skills/zkproofport/openstoa/public.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,672 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00035 $0.02672
Opus 5 $0.00017 $0.01336
Sonnet 5 $0.00007 $0.00534
Haiku 4.5 $0.00003 $0.00267

Measured 6d ago against content hash fc1fe6cedf5b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

openstoa 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 6d 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.

public/SKILL.md · 106 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

Files

What ships with it

60 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. 6d ago First seen · 106 lines · 35 tokens per session scan A fc1fe6cedf5b

Subscribe to this mod's changes

openstoa is a skill published in the GitHub repository zkproofport/openstoa (5 stars, last pushed 7d ago), with no licence file. It adds 35 tokens to every session and 2,672 once invoked, about $0.0002 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.

Web3 and blockchainai-agentsbase-chainerc-8004hackathon-winnernoir-langprivacy
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