Rent GPUs, launch spot instances and run serverless inference on the Xcelsior marketplace.
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io.github.aabiro/xcelsior is an MCP server that rent GPUs, launch spot instances and run serverless inference on the Xcelsior marketplace. Its tool list has not been published yet over http and stdio, requires no API key, and scores 64/100 on MCPpedia's security, maintenance and efficiency rubric.
Config is the same across clients - only the file and path differ.
{
"mcpServers": {
"io-github-aabiro-xcelsior": {
"args": [
"-y",
"@xcelsior-gpu/mcp"
],
"command": "npx"
}
}
}Are you the author?
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Rent GPUs, launch spot instances and run serverless inference on the Xcelsior marketplace.
This server supports HTTP transport. Be the first to test it - help the community know if it works.
Five weighted categories - click any category to see the underlying evidence.
No known CVEs.
Checked @xcelsior-gpu/mcp against OSV.dev.
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Launch it, connect to it, spend on it and tear it down — through 89 MCP tools, without ever opening a browser. Every host admission-gated before it takes work.
graph TB
subgraph clients["Clients"]
dashboard["Dashboard · Next.js"]
sdk["TypeScript SDK"]
cli["CLI"]
end
subgraph platform["Xcelsior Platform"]
api["FastAPI Gateway · public API + dashboard"]
scheduler["Scheduler · Job matching & compliance"]
db[("PostgreSQL 16 + SQLite auxiliaries")]
billing["Billing · metering · holds · payouts"]
reputation["Reputation · 6-tier trust scoring"]
end
subgraph hosts["GPU Host Network"]
mesh["Headscale Mesh · Private Overlay"]
worker1["Worker Agent · RTX 4090"]
worker2["Worker Agent · A100 80 GB"]
worker3["Worker Agent · H100 80 GB"]
end
dashboard & sdk & cli -->|HTTPS| api
api --> scheduler
api --> db
api --> billing
api --> reputation
scheduler -->|SSH over mesh| mesh
mesh --- worker1 & worker2 & worker3
| Global supply | Capacity from independent hosts worldwide, ranked on price, availability, hardware, and host reputation. |
| 4-Layer Security | Version gating → least-privilege Docker → egress firewall → gVisor / Kata sandbox. |
| Agent-Native Surface | 89 MCP tools with per-tool scopes — launch, connect, spend, snapshot, terminate. No dashboard step in any of it. |
| Metered Billing | Per-second metering against wallet holds that expire; Stripe, PayPal, and Wise payout rails; spending widened only through an approvable plan. |
| Reputation Engine | Multi-factor scoring with 7-day grace decay. Bronze → Silver → Gold → Platinum → Diamond tiers. |
| Private Mesh | Headscale overlay network — GPU workers never exposed to the public internet. |
| Admission Gating | Hosts must pass version checks + GPU fingerprinting before receiving any work. |
| Spot Instances | Interruptible GPUs at published spot rates (no bidding). Capacity-based preemption when on-demand needs capacity. |
Spot workloads use pricing_mode: "spot" — not an auction. Customers accept the published spot rate at launch; the rate is locked for billing when the job is assigned. Preemption is capacity-driven (on-demand contention or host drain), not bid-based.
# Launch an interruptible spot instance
curl -X POST https://xcelsior.ca/instance \
-H "Authorization: Bearer $XCELSIOR_TOKEN" \
-H "Content-Type: application/json" \
-d '{"name": "embed-batch", "vram_needed_gb": 8, "pricing_mode": "spot", "gpu_model": "RTX 4090"}'
| On-Demand | Spot | |
|---|---|---|
| Availability | Guaranteed while funded | Best-effort; may queue |
| Price | Fixed catalog rate | Published spot rate (typically 40–60% below on-demand) |
| Preemption | Neve |