MCP server health, State of MCP census
Test Mailbox
io.github.therealMrFunGuy/test-mailbox
Disposable email inboxes for testing — create addresses, wait for messages, extract links.
- remote_5xx
- server_json_invalid
Checks
The exact rows akashi check io.github.therealMrFunGuy/test-mailbox 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 | fail | server error (HTTP 502) |
| at least one live entrypoint | fail | nothing installable or reachable |
Evidence
Repository
No repository declared.
Packages
No packages declared.
Remote endpoints
- https://mail.rjctdlabs.xyz/sse
sse · server_error· HTTP 502
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 io.github.therealMrFunGuy/test-mailboxInstall 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 io.github.therealMrFunGuy/test-mailbox --badge.
Open data, CC BY 4.0. How this census works - denominator, tiers, and what each check does.