Otskit MCP

Name: Otskit MCP
Author: OTSkit

by OTSkitversion 0.2.1i★ –iRuns on your computer

Registry nameio.github.AlexAlves87/otskit-mcp

Install

Overview

Description from the maker (original English)

Stamp, upgrade, and verify Bitcoin timestamps via AI agents. No API keys required.

PopNx MCP’s three pillars

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

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 118/wk · ★ –

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: Crypto & blockchain

Install

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

Before you install

Basic checks: 0 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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": {
    "otskit": {
      "command": "npx",
      "args": [
        "-y",
        "@otskit/mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add otskit -- npx -y @otskit/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "otskit": {
      "command": "npx",
      "args": [
        "-y",
        "@otskit/mcp"
      ]
    }
  }
}

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": {
    "otskit": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@otskit/mcp"
      ]
    }
  }
}

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.

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 10, 2026

! Caution
Maker matches the repo
The publisher (AlexAlves87) is not the repo owner (OTSkit); someone else may have listed it
… 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 Crypto & blockchaini

More stars than 0% of the other 1636 servers in this category
Published to the registry more recently than 20% of the other 1636 servers in this category
Basic checks equal to or better than 12% of the other 1636 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 Otskit MCP safe?

It passed 0 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

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 (0.2.1) reached the registry 5 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: xytara MCP Executor, FairAgent, A2A Gateway — Base Token Guard & x402 Settlement

Alternatives

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

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by naxytra.comEarlyUpdated today

Runs in the cloud✓ naxytra.com

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FairAgent

Live state and unsigned mint/claim tx builder for FairAgent AI-agent NFTs on BNB Chain.

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A2A Gateway — Base Token Guard & x402 Settlement

Pre-trade Base token risk verdicts, EVM route simulation and code audits, paid per call over x402.

by a2a.musefish.tradeVery newUpdated today

Runs in the cloud✓ a2a.musefish.trade

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.

@otskit/mcp

OpenTimestamps MCP server - stamp, upgrade, and verify Bitcoin timestamps via AI agents.

Exposes a set of tools to any MCP-compatible agent so it can timestamp documents, monitor confirmation status, and verify proofs against the Bitcoin blockchain - all from a conversation.

This is an independent implementation of the OpenTimestamps protocol. It is not affiliated with, endorsed by, or maintained by the OpenTimestamps project.

Note on confirmation times: After stamping, a proof is pending until Bitcoin confirms it. Confirmations typically arrive within ~60 minutes, but can take several hours during network congestion. Use ots-mcp watch or upgrade_timestamp to monitor. A pending proof is not a failed proof.

Install

npm install -g @otskit/mcp

Agent setup

ots-mcp setup claude        # Claude Desktop

ots-mcp setup claude-code # Claude Code CLI ots-mcp setup codex # Codex CLI

Each command writes the MCP entry into the agent's config file, makes a .bak backup if the file already exists, and skips if ots-mcp is already configured. Restart the agent afterwards to apply the changes.

CLI commands

Command	Description
`ots-mcp serve`	Start the MCP server (stdio transport)
`ots-mcp stamp`	Stamp a SHA-256 hash against Bitcoin calendars
`ots-mcp upgrade`	Check if a pending stamp has been confirmed
`ots-mcp verify`	Verify a stamp against Bitcoin
`ots-mcp list [status]`	List stamps (`pending` / `confirmed` / `failed`)
`ots-mcp watch [minutes]`	Monitor pending stamps and attempt due upgrades (default: 30 min, minimum: 15 min)
`ots-mcp check-pending`	Run one upgrade pass over all pending stamps
`ots-mcp scheduler install\	remove\	status`	Manage OS-level scheduler for auto-upgrades
`ots-mcp backup [dest]`	Backup the SQLite database
`ots-mcp setup`	Configure MCP for an agent

MCP tools exposed to agents

Tool	Description
`create_timestamp`	Stamp a SHA-256 hash against 4 public OTS calendars
`upgrade_timestamp`	Check if a pending stamp has been confirmed in Bitcoin
`verify_timestamp`	Verify a stamp - proves hash existed before a given Bitcoin block
`verify_external_proof`	Verify a whitelisted local file against its external `.ots` proof, without changing the local stamp store
`inspect_timestamp`	Inspect a stored proof file without network calls
`list_pending`	List stamps with status, retry count, and filters
`watch`	Open a terminal window monitoring pending stamps and attempting due upgrades
`hash_file`	Compute the SHA-256 of a local file and return it as a 64-char hex string (no network calls)
`stamp_file`	Compute SHA-256 of a local file and stamp it on Bitcoin in one step

Data directory

All data is stored in ~/.ots-mcp/:

~/.ots-mcp/

ots-mcp.db # SQLite database (stamps, proof files) config.json # Optional config overrides ots-mcp.log # Log file

Configuration

Create ~/.ots-mcp/config.json to override defaults:

"stamp_enabled": true, "scheduler_interval_minutes": 30, "retry_max_attempts": 20, "calendar_timeout_ms": 10000, "calendars": [ "https://alice.btc.calendar.opentimestamps.org", "https://bob.btc.calendar.opentimestamps.org", "https://finney.calendar.eternitywall.com", "https://btc.calendar.catallaxy.com" ] }

Development

npm run build    # production build

npm run dev # watch mode npm test # run tests

Dependencies

@otskit/client - OTS calendar client (brings in @otskit/core, the protocol engine)
@modelcontextprotocol/sdk - MCP SDK
node-sqlite3-wasm - local database (pure WASM, no native compilation)

Requires Node.js >= 20.

Otskit MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Crypto & blockchaini

Common questions

Alternatives

xytara MCP Executor

FairAgent

A2A Gateway — Base Token Guard & x402 Settlement

README from the maker

@otskit/mcp

Install

Agent setup

CLI commands

MCP tools exposed to agents

Data directory

Configuration

Development

Dependencies