MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Payments & trading

Orbuc

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

Checks passed
11 / 22

3 failed · 8 not measured

Median response
172 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
12

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
410
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
Publisher identityCan the publisher be traced to its source?
312

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 172 ms.

  • Pass
    Valid handshake

    protocolVersion 2024-11-05, serverInfo.name orbuc_mcp.

  • Pass
    Lists tools

    tools/list returned 12 tools.

  • Fail
    Current protocol

    Negotiated 2024-11-05. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 172 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 172 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    0 of 16 parameters have a description (0%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Not measured
    Website matches publisher

    This namespace is not a reverse domain, so the website comparison does not apply.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Pass
    Repo owner matches

    The GitHub repository owner matches the namespace login.

  • Fail
    Recently updated

    Updated 2026-03-31T20:58:01.475706Z, which is older than 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using Orbuc

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

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

Capabilities

Tools 12

orbuc_btc_health

Check health of the BTC holdings tracker. Returns status, database date range, segment count, and record totals.

Discovered
orbuc_btc_holdings_current

Get the latest total BTC held by institutions, broken down by segment. Segments: public_companies, etf_funds, governments, private_companies, defi_other, exchanges_custodians.

Discovered
orbuc_btc_holdings_daily

Get daily BTC holdings time series, optionally filtered by segment. Args: segment: public_companies, etf_funds, governments, private_companies, defi_other, exchanges_custodians. Omit for aggregate totals. start: Start date YYYY-MM-DD end: End date YYYY-MM-DD

Discovered
orbuc_btc_holdings_segments

Get current BTC holdings per segment. Each segment includes btc_amount and source.

Discovered
orbuc_btc_holdings_weekly

Get weekly aggregated BTC holdings, optionally filtered by segment. Args: segment: Segment name (optional)

Discovered
orbuc_stablecoin_aggregate

Get daily aggregate stablecoin data at different levels. level='total': daily total market cap. level='symbol': daily breakdown per stablecoin. level='chain': daily breakdown per chain per symbol.

Discovered
orbuc_stablecoin_chains

Get stablecoin supply distribution across chains (Ethereum, Tron, Solana, etc.). Args: days: Number of days of history (optional)

Discovered
orbuc_stablecoin_coin

Get historical supply data for a specific stablecoin. Args: symbol: Stablecoin ticker, e.g. USDT, USDC, DAI (required) days: Number of days of history start_date: Start date YYYY-MM-DD end_date: End date YYYY-MM-DD

Discovered
orbuc_stablecoin_coin_latest

Get the latest supply data for a specific stablecoin with chain breakdown. Args: symbol: Stablecoin ticker, e.g. USDT, USDC (required)

Discovered
orbuc_stablecoin_health

Check health of the stablecoin market cap tracker. Returns status, latest date, total market cap, and tracked coins/chains.

Discovered
orbuc_stablecoin_latest

Get the latest full snapshot of all tracked stablecoins with per-issuer breakdown. Returns each stablecoin's total_supply_usd, issuer, and per-chain deployment data.

Discovered
orbuc_stablecoin_mcap

Get historical daily total stablecoin market cap across all tracked issuers. Returns daily total_mcap_usd, daily_change_usd, and daily_change_pct. Source: Orbuc.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected172 ms12