MCP server health, State of MCP census
Calculator
com.mcpcalc/calculator
Calculators accessible via MCP with real-time collaborative sessions and shareable URLs.
- server_json_invalid
Checks
The exact rows akashi check com.mcpcalc/calculator prints, from the 2026-07-02 census.
| Check | Status | Detail |
|---|---|---|
| registry status | pass | active |
| server.json valid | fail | jsonschema validation failed with 'https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json#' |
| repo reachable | skip | no repository declared |
| remote reachable | pass | HTTP 200 via initialize |
| MCP conformance | pass | initialize handshake ok |
| tools/list | pass | 10 tools: list_calculators, get_calculator_schema, calculate, generate_prefilled_url, calculate_cas, calculate_cas_headless, create_session, get_session_state, ... |
| at least one live entrypoint | pass | 1 alive |
Evidence
Repository
No repository declared.
Packages
No packages declared.
Remote endpoints
- https://mcpcalc.com/api/v1/mcp
streamable-http · reachable· HTTP 200· initialize_ok
10 tools: list_calculators, get_calculator_schema, calculate, generate_prefilled_url, calculate_cas, calculate_cas_headless, create_session, get_session_state, ...
server.json
invalidagainst its declared schema
- jsonschema validation failed with 'https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json#'
- - at '/repository': missing properties 'url', 'source'
One of 14559 servers in the 2026-07-02 State of MCP census: 11582 healthy (79.6%), 2212 degraded (15.2%), 596 dead (4.1%), 169 unknown (1.2%).
Verify it yourself
This page is a static read of one dated probe. Run the same check locally, any time, with no key:
$ akashi check com.mcpcalc/calculatorInstall Akashi - single Go binary, zero keys, MIT licensed.
Is this your server?
Claiming a server (an auto-refreshing badge and a verified publisher profile) is coming soon. Until then, embed the verified-on-date badge yourself with akashi check com.mcpcalc/calculator --badge.
Open data, CC BY 4.0. How this census works - denominator, tiers, and what each check does.