Prototype · Preview: every server in the official registry, synced every 30 minutes. Reviews and accounts come in a later step.
PopNx MCPMCP servers for people who use AI · explained in plain words

Hashproof

by csacanamversion 0.1.2i★ –iRuns on your computer
Registry nameio.github.csacanam/hashproof

Install

Overview

Description from the maker (original English)

Issue verifiable credentials from AI agents for $0.10 via x402. On-chain on Celo, IPFS-pinned.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs on your computer
  • Transport: stdio
  • Category: Other
  • You need to fill in: HASHPROOF_API_KEY, HASHPROOF_WALLET_PRIVATE_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on your computer with your user’s permissions (files, network, apps).
  • You fill in yourself: HASHPROOF_API_KEY, HASHPROOF_WALLET_PRIVATE_KEY, HASHPROOF_X402_NETWORK

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

  • npmNode.js installed (for the npx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "hashproof": {
      "command": "npx",
      "args": [
        "-y",
        "hashproof-mcp"
      ],
      "env": {
        "HASHPROOF_API_KEY": "your-value",
        "HASHPROOF_WALLET_PRIVATE_KEY": "your-value",
        "HASHPROOF_X402_NETWORK": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add hashproof --env HASHPROOF_API_KEY=your-value --env HASHPROOF_WALLET_PRIVATE_KEY=your-value --env HASHPROOF_X402_NETWORK=your-value -- npx -y hashproof-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "hashproof": {
      "command": "npx",
      "args": [
        "-y",
        "hashproof-mcp"
      ],
      "env": {
        "HASHPROOF_API_KEY": "your-value",
        "HASHPROOF_WALLET_PRIVATE_KEY": "your-value",
        "HASHPROOF_X402_NETWORK": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "hashproof": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "hashproof-mcp"
      ],
      "env": {
        "HASHPROOF_API_KEY": "your-value",
        "HASHPROOF_WALLET_PRIVATE_KEY": "your-value",
        "HASHPROOF_X402_NETWORK": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • HASHPROOF_API_KEY secret env
    Prepaid API key (alternative to wallet). One of the two payment methods is required only for issue_credential.
  • HASHPROOF_WALLET_PRIVATE_KEY secret env
    EVM private key of a dedicated wallet holding USDC on Base or Celo — pays $0.10 per issuance via x402.
  • HASHPROOF_X402_NETWORK env
    base (default) or celo

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account csacanam, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

  • More stars than 0% of the other 32505 servers in this category
  • Published to the registry more recently than 17% of the other 32505 servers in this category
  • Basic checks equal to or better than 100% of the other 32505 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Hashproof safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: HASHPROOF_API_KEY, HASHPROOF_WALLET_PRIVATE_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.2) reached the registry 4 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, topo^alpin

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago
Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday
Install

topo^alpin

by topoalpin.app

Avalanche bulletins and mountain weather forecasts for any place in the Alps.

Runs in the cloudUpdated today
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

HashProof

Verifiable credentials with IPFS backup, on-chain registry, and pay-per-call API via x402.

What it is

HashProof is a credential issuance API. Organizations and Individuals (entities) issue verifiable credentials to people. Each credential is:

  • Stored as a JSON in the database and backed up on IPFS (Pinata)
  • Registered on-chain in the CredentialRegistry contract on Celo
  • Verifiable via a public URL: https://hashproof.dev/verify/:id

Two ways to pay: micropayment in USDC via x402 (Base or Celo) — no API keys, no subscriptions — or a prepaid API key for enterprise clients (no crypto needed). AI agents can call the API directly using a funded wallet.

Project structure

backend/       Express API — credential issuance, verification, payments

frontend/ React app — landing page, credential verification, entity pages contracts/ CredentialRegistry smart contract (Celo) mcp/ MCP server (hashproof-mcp on npm) — use HashProof from any AI agent skills/ Agent skill (npx skills add csacanam/hashproof) docs/ Architecture and flow documentation

Deployed contracts

NetworkContractAddress
Celo mainnetCredentialRegistry0x7a1B759A602Aba72a70f99Dffd0a386d7504ce9B

Paid API endpoints

EndpointPriceDescription
POST /issueCredential$0.10 USDCIssue one verifiable credential
POST /entities/:id/verificationRequests$49 USDCSubmit a verification request

Payment is in USDC on Base or Celo via x402. The client signs an off-chain authorization — no gas required.

Free endpoints

EndpointDescription
GET /verify/:idFull 3-layer verification
GET /templates/:ref/requirementsGet required fields for a template
POST /templates/:ref/previewGenerate a preview PDF with watermark (no cost)
GET /statsOn-chain credential counters

For AI agents

HashProof is fully agent-usable — no account, no human onboarding. Three ways in:

  # local (stdio) — pays per credential with your own wallet via x402, or an API key

claude mcp add hashproof -- npx -y hashproof-mcp

remote (Streamable HTTP) — nothing to install, API key required to issue

claude mcp add --transport http hashproof https://api.hashproof.dev/mcp

Tools: preview_template (free — iterate custom layouts), issue_credential ($0.10 via x402 or API key), verify_credential and get_template_requirements (free). The remote server has no wallet, so it can't do x402 — it needs Authorization: Bearer . See mcp/README.md.

  • Agent skill: npx skills add csacanam/hashproof — or read it at hashproof.dev/skill.md.
  • Plain HTTP + x402: POST /issueCredential returns a 402 challenge any x402-v2 client can pay (USDC on Base or Celo). LLM index: hashproof.dev/llms.txt.

Agent identity metadata (ERC-8004 registration-v1): hashproof.dev/metadata.json.

Quick start

See backend/README.md and frontend/README.md for setup instructions. See docs/README.md for the full documentation index.

Ask PopNx