Orbuc

Name: Orbuc
Author: xOrbuc

by xOrbucversion 1.0.0i★ –iRuns in the cloud

Registry nameio.github.xOrbuc/orbuc

Install

Overview

Description from the maker (original English)

On-chain stablecoin market cap and Bitcoin institutional holdings data.

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 checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

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 in the cloud
Transport: Streamable HTTP
Category: Other

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.orbuc.io/mcp/orbuc

Run this in your terminal

claude mcp add --transport http orbuc https://mcp.orbuc.io/mcp/orbuc

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "orbuc": {
      "url": "https://mcp.orbuc.io/mcp/orbuc"
    }
  }
}

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": {
    "orbuc": {
      "type": "http",
      "url": "https://mcp.orbuc.io/mcp/orbuc"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.orbuc.io/mcp/orbuc

Menu names can differ slightly by plan and over time.

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

We have not read this server’s tool list yet; we check endpoints in rotation.

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 xOrbuc, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32461 servers in this category
Published to the registry more recently than 5% of the other 32461 servers in this category
Basic checks equal to or better than 100% of the other 32461 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 Orbuc 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?

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 in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 7 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, dotnet-mcp

Alternatives

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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.

Orbuc MCP Server

Remote MCP server providing AI agents with direct access to independent on-chain stablecoin market cap and Bitcoin institutional holdings data.

Endpoint: https://mcp.orbuc.io/mcp/orbuc

Protocol: MCP Streamable HTTP (JSON-RPC 2.0 over POST) Authentication: None required (open access) Transport: Stateless HTTP — no session persistence

What is Orbuc?

Orbuc is a digital asset research and investment firm. Orbuc produces its own data, tracking two core datasets independently — no third-party aggregators:

Stablecoin Market Cap — direct on-chain totalSupply() RPC calls across 19 blockchain networks covering 13 stablecoins (USDT, USDC, USDS, DAI, USDe, FDUSD, PYUSD, USD1, BUIDL, BUIDL-I, crvUSD, GHO, FRAX). Updated daily at 03:00 UTC.

Bitcoin Institutional Holdings — compiled from SEC EDGAR 8-K filings, on-chain Etherscan data, and verified public disclosures across 6 segments (ETF funds, public companies, governments, private companies, DeFi/wrapped BTC, exchanges & custodians). Updated daily at 02:00 UTC.

Available Tools (12)

Stablecoin Market Cap

Tool	Description	Parameters
`orbuc_stablecoin_mcap`	Historical daily total stablecoin market cap	`days`, `start_date`, `end_date`
`orbuc_stablecoin_latest`	Latest snapshot — all 13 coins with per-chain breakdown	—
`orbuc_stablecoin_coin`	Historical supply for a specific stablecoin	`symbol`, `days`, `start_date`, `end_date`
`orbuc_stablecoin_coin_latest`	Latest supply for one coin with chain breakdown	`symbol`
`orbuc_stablecoin_aggregate`	Daily aggregate by total, symbol, or chain	`level`, `start_date`, `end_date`
`orbuc_stablecoin_chains`	Supply distribution across chains	`days`

Bitcoin Institutional Holdings

Tool	Description	Parameters
`orbuc_btc_holdings_current`	Latest BTC held by institutions per segment	—
`orbuc_btc_holdings_segments`	Segment breakdown with confidence and sources	—
`orbuc_btc_holdings_daily`	Daily time series, optionally by segment	`segment`, `start_date`, `end_date`
`orbuc_btc_holdings_weekly`	Weekly aggregated holdings	`segment`
`orbuc_btc_health`	BTC tracker health status	—
`orbuc_stablecoin_health`	Stablecoin tracker health status	—

Quick Start

Claude.ai / Claude Desktop

Add as a custom MCP connector:

https://mcp.orbuc.io/mcp/orbuc

VS Code / Cursor / Windsurf

Add to .vscode/mcp.json:

"servers": { "orbuc": { "type": "http", "url": "https://mcp.orbuc.io/mcp/orbuc" } } }

Claude Desktop Config

Add to claude_desktop_config.json:

"mcpServers": { "orbuc": { "type": "url", "url": "https://mcp.orbuc.io/mcp/orbuc" } } }

Python (MCP SDK)

from mcp import ClientSession

from mcp.client.streamable_http import streamablehttp_client

async def query_orbuc(): async with streamablehttp_client("https://mcp.orbuc.io/mcp/orbuc") as (read, write, _): async with ClientSession(read, write) as session: await session.initialize() tools = await session.list_tools() print(f"{len(tools.tools)} tools available")

result = await session.call_tool("orbuc_btc_holdings_current", {}) print(result.content[0].text)

cURL

# Initialize

curl -X POST https://mcp.orbuc.io/mcp/orbuc \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"test","version":"1.0"}}}'

List tools

curl -X POST https://mcp.orbuc.io/mcp/orbuc \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","id":2,"method":"tools/list","params":{}}'

Call a tool

curl -X POST https://mcp.orbuc.io/mcp/orbuc \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","id":3,"method":"tools/call","params":{"name":"orbuc_stablecoin_mcap","arguments":{"days":7}}}'

Example Queries

Once connected, ask your AI agent:

*"What's the total stablecoin market cap today?"*
*"Show me USDT supply broken down by chain"*
*"How much BTC do public companies hold vs ETF funds?"*
*"What's the daily change in ETF segment BTC holdings over the past two weeks?"*
*"Compare USDC and USDT market share across Ethereum, Tron, and Solana"*
*"Which BTC segments have high confidence data vs carry-forward estimates?"*

Data Coverage

Stablecoins

Coins: USDT, USDC, USDS, DAI, USDe, FDUSD, PYUSD, USD1, BUIDL, BUIDL-I, crvUSD, GHO, FRAX
Chains: Ethereum, Tron, Solana, Arbitrum, Base, BSC, Polygon, Avalanche, Optimism, TON, Near, Stellar, Sui, Celo, Gnosis, Linea, Mantle, zkSync, Algorand
History from: August 2024
Source: Direct on-chain totalSupply() RPC calls

Bitcoin Holdings

Segments: public_companies, etf_funds, governments, private_companies, defi_other, exchanges_custodians
History from: August 2025
Sources: SEC EDGAR, Etherscan, event detection

x402 Payment Protocol

Orbuc also supports x402 micropayments for autonomous agent access via USDC on Base. The MCP server is currently free and open access — x402 pricing may be introduced in future.

Discovery file: https://orbuc.io/.well-known/x402.json

License

Proprietary. Data provided by Orbuc Research. See data disclaimer for terms of use.

Orbuc

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

dotnet-mcp

README from the maker

Orbuc MCP Server

What is Orbuc?

Available Tools (12)

Stablecoin Market Cap

Bitcoin Institutional Holdings

Quick Start

Claude.ai / Claude Desktop

VS Code / Cursor / Windsurf

Claude Desktop Config

Python (MCP SDK)

cURL

List tools

Call a tool

Example Queries

Data Coverage

Stablecoins

Bitcoin Holdings

x402 Payment Protocol

Links

License