com.spellbook-finance/mcp
SpellBook Finance
Magic: The Gathering card prices, movers, arbitrage, sealed box EV, and seller inventory tools.
alive probed 2026-10-15 · HTTP 200
127tools
105ktokens in Claude Opus 5.5
106ktokens in Claude Code
52.6 %of a 200k context window
60ko200k_base estimate
367 msto initialize
138 msto list tools
- Endpoint
- https://api.spellbook-finance.com/mcp (streamable-http)
- Host
- api.spellbook-finance.com
- Protocol
- 2025-06-18
- Reports itself as
- spellbook-finance 0.1.0
- Capabilities
- resources, tools
- Instructions
- 2 046 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Website
- https://spellbook-finance.com/agent/mcp.md
- Registry
- active, updated 2026-09-24 · registry entry
- Reachable
- 11 of the last 13 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| spellbook_collection_buying_record | 11 414 | 19 % |
| spellbook_customer_evidence_record | 6 162 | 10 % |
| spellbook_support_report | 1 668 | 3 % |
| spellbook_credit_resale_assessment | 1 517 | 3 % |
| spellbook_sale_record | 939 | 2 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-15 09:56 | alive | 960 ms | 127 | 105k | 60k |
| 2026-10-13 11:09 | alive | 2.7 s | 127 | 105k | 60k |
| 2026-10-11 10:17 | alive | 703 ms | 126 | 105k | 59k |
| 2026-10-10 10:07 | alive | 1.3 s | 116 | 100k | 57k |
| 2026-10-09 11:12 | alive | 715 ms | 116 | 99k | 57k |
| 2026-10-07 11:04 | alive | 1.3 s | 116 | 99k | 57k |
| 2026-10-06 10:53 | alive | 364 ms | 116 | 99k | 57k |
| 2026-10-05 13:43 | alive | 367 ms | 112 | 96k | 55k |
| 2026-10-05 00:21 | alive | 319 ms | 112 | 55k | |
| 2026-10-04 09:58 | alive | 3.4 s | 112 | 55k | |
| 2026-10-04 07:52 | alive | 1.1 s | 112 | 55k | |
| 2026-10-03 20:32 | server error | ||||
| 2026-10-03 17:49 | server error |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.spellbook-finance/mcp)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.