io.github.ms-methos/jsonfabrica-mcp-server
JsonFabrica
Is the JsonFabrica MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Generate realistic, relational synthetic JSON test data from templates, via the JsonFabrica API.
alive probed 2026-11-15 · unchanged since 2026-10-30
- Run it
- npx -y @jsonfabrica/mcp-server@0.3.2 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- jsonfabrica-mcp-server 0.3.2
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.9 % of a 1M context window
- Count
- 8.9k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 9.2k. The o200k_base estimate is 5.4k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/ms-methos/jsonfabrica-mcp-server
- Website
- https://jsonfabrica.com
- Registry
- active, updated 2026-10-06 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.66×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| jsonfabrica_create_batch | 1 728 | 1 043 | 19 % |
| jsonfabrica_create_template | 1 009 | 609 | 11 % |
| jsonfabrica_generate_adhoc | 762 | 460 | 9 % |
| jsonfabrica_generate_from_template | 752 | 454 | 8 % |
| jsonfabrica_create_sequence | 689 | 416 | 8 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.mrslbt/rippr-mcp · alive
- io.github.mrslbt/tabedata-mcp · alive
- io.github.mrslbt/xendit-mcp · alive
- Keycloak Admin io.github.mrz1880/mcp-keycloak-admin · needs env
- DesignScan io.github.ms-zaman/designscan · alive
- io.github.msantagiulianab/solana-x402-compliance · alive
- io.github.msdanyg/smart-connections-mcp · needs env
- io.github.mselcukozturk/hevy2whoop · alive
Servers that mention relational or realistic.
- Kleo com.kleooai/kleo · needs auth
- SudoMock com.sudomock/mockups · needs auth
- io.github.K-Cupples/mockmcp · not found
- io.github.centricai/centric-demo · alive
- Dream Home Design io.github.damdafayton/dreamhome · needs auth
- MockHero io.github.dinosaur24/mockhero · not found
- BugiaData io.github.lgpoliveira/bugiadata-mcp · needs auth
- SeedBase Test Data io.github.marcelglaeser/seedbase · alive
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
- The server answers initialize and tools/list. Nothing to fix.