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 j4flmao/agent-skills --skill zero-knowledge-proofsgit clone --depth 1 https://github.com/j4flmao/agent-skillsWrote 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/j4flmao/agent-skills/zero-knowledge-proofs)<a href="https://agentmods.dev/skills/j4flmao/agent-skills/zero-knowledge-proofs"><img src="https://agentmods.dev/badge/skills/j4flmao/agent-skills/zero-knowledge-proofs/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/j4flmao/agent-skills/zero-knowledge-proofs"><img src="https://agentmods.dev/badge/skills/j4flmao/agent-skills/zero-knowledge-proofs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00270 |
| Opus 5 | $0.00012 | $0.00135 |
| Sonnet 5 | $0.00005 | $0.00054 |
| Haiku 4.5 | $0.00002 | $0.00027 |
Grade A, and why
Zero-Knowledge Proofs 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 8d 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.
What it actually says
Zero-Knowledge Proofs
ZK Circuits (Circom)
Create arithmetic circuits to prove knowledge of a pre-image without revealing it.
pragma circom 2.0.0;
include "node_modules/circomlib/circuits/poseidon.circom";
template SecretHasher() {
signal input secret;
signal output hash;
component poseidon = Poseidon(1);
poseidon.inputs[0] <== secret;
hash <== poseidon.out;
}
component main = SecretHasher();
zk-SNARKs
Use Groth16 or Plonk for succinct non-interactive arguments of knowledge. Ensure trusted setup (PTAU) for Groth16.
Privacy Protocol Architecture
%%{init: {"theme": "default", "flowchart": {"useMaxWidth": true}}}%%
graph TD
User[User] -->|Secret| Circuit[ZK Circuit]
Circuit -->|Proof| Prover[Prover Node]
Prover -->|Submit Proof| Contract[Verifier Smart Contract]
Contract -->|Valid?| State[Update State]
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.
- 8d ago First seen · 39 lines · 23 tokens per session scan A 2cbff940cfac
Zero-Knowledge Proofs is a skill published in the GitHub repository j4flmao/agent-skills (23 stars, last pushed 5d ago), licensed MIT. It adds 23 tokens to every session and 270 once invoked, about $0.0001 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 2026-09-03.
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