Mcp

Orbuc

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

Verified: 2026-05-13 (mcp-registry-ingest-2026-05-13+enrich-capability-skill)

When to use Orbuc

Choose if

You want a free, no-auth read-only data source for stablecoin supply across chains or for Bitcoin institutional-holder breakdowns (ETFs, public companies, governments). Open access keeps the integration friction near zero — useful for crypto-research agents that need to cite supply numbers or track segment shifts week-over-week.

Avoid if

You need broad crypto market data — altcoin prices, DEX volumes, exchange order books, or on-chain analytics beyond supply. Orbuc covers only 13 stablecoins and BTC institutional holdings. Also avoid for mission-critical production flows: the README warns that x402 pricing may be introduced later, and some Bitcoin segments use carry-forward estimates rather than direct measurement.

Risk Flags

  • LOW scope Coverage is narrow — 13 stablecoins across 19 chains plus Bitcoin institutional holdings only. Not a general crypto market-data provider; no altcoin prices, no DEX volumes, no on-chain analytics beyond supply.
  • LOW data_quality README discloses "carry-forward estimates" for some Bitcoin holding segments and daily refresh cadence. Stablecoin history starts August 2024; Bitcoin holdings history starts August 2025.
  • MEDIUM cost Currently free and open access but README states "x402 pricing may be introduced in future" — agents wiring this into a production flow should plan for an eventual paid surface.
  • LOW maturity Solo-developer MCP server (xOrbuc on GitHub) with proprietary license. Limited public track record; rate limits not documented.

Cost

Type: Free

Distribution

MCP Registry
io.github.xOrbuc/orbuc
Repository
https://github.com/xOrbuc/orbuc-mcp-server