io.github.kfireliyahu/emerald
Emerald
Is the Emerald MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-14.
The database under the chat: a local SQLite file a model asks for rows, not notes to re-read.
alive probed 2026-11-14
- Run it
- npx -y emerald-mcp@0.4.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- emerald 0.4.0
- Capabilities
- resources, tools
- Instructions
- 12 663 characters
- Of a 1M window
- 5.6 % of a 1M context window
- Count
- 56k tokens in Claude Opus 5.5, exact, measured 2026-11-14. With the Claude Code prefix mcp__…__ on each tool name: 57k. The o200k_base estimate is 36k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/kfireliyahu/emerald-emd
- Website
- https://getemerald.dev
- Registry
- active, updated 2026-11-13 · registry entry
- Changes
- 4 recorded, reachable in 4 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.56×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| declare_format | 3 734 | 2 395 | 7 % |
| record_deposits | 2 204 | 1 414 | 4 % |
| record_fund_readings | 2 181 | 1 399 | 4 % |
| extend_format | 1 994 | 1 279 | 4 % |
| read_onto_format | 1 851 | 1 187 | 3 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.kevindarstNBB/board-and-stable-mcp · not found
- io.github.kevint-cerebras/cerebras-code-mcp · alive
- Muse Image io.github.kevintsai1202/muse-image · alive
- b2bsearch: B2B contacts and account signals io.github.keyvwin/mcp · alive
- io.github.khadinakbaronline/telegram-channel-scraper-mcp · not found
- RAGMap io.github.khalidsaidi/ragmap · alive
- io.github.khalomsky/syke · alive
- io.github.khaoss85/orchestro · crashed on start
Servers that mention emerald or database or sqlite.
- okl — Observed Knowledge Ledger io.github.emeraldleaf/okl · needs args
- Aevia ai.aeviamodeler/aevia · needs auth
- ai.argushq/enforcement-database · no DNS
- EOSL.ai — Hardware End-of-Life Database ai.eosl/eosl · alive
- JustDeploy ai.justdeploy/mcp · needs auth
- ai.mcpmyadmin/mcpmyadmin · needs auth
- QCDatabase.AI ai.qcdatabase/mcp · needs auth
- Schema ai.schemalabs/schema · needs auth
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-11-14 08:08 | alive | 270 ms | 86 | 56k | 36k |
| 2026-11-11 08:29 | alive | 342 ms | 85 | 55k | 35k |
| 2026-11-05 08:37 | alive | 361 ms | 85 | 55k | 35k |
| 2026-10-29 07:47 | alive | 321 ms | 85 | 55k | 35k |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- This server is in the heaviest 10 % of the registry. Shorter descriptions, fewer optional parameters and fewer tools cut the cost. The command npx mcpcost --url <endpoint> --tools 50 lists every tool with its cost.