MCP server health, State of MCP census

Semantic Search

com.historicalsoundscapes.www/semantic-search

Semantic search for Historical Soundscapes. Search eventos, entities, filters. Cross-lingual ES/EN.

degraded checked 2026-08-03 · 5/8 checks passed · keyless

repo_404

Checks

The exact rows akashi check com.historicalsoundscapes.www/semantic-search prints, from the 2026-08-03 census.

Check	Status	Detail
registry status	pass	active
server.json valid	pass	validates against its declared JSON Schema
repo reachable	fail	404 (repository gone)
remote reachable	pass	HTTP 200 via initialize
MCP conformance	pass	initialize handshake ok
tools/list	warn	could not complete a full MCP session
at least one live entrypoint	pass	1 alive
spec 2026-07-28	fail	at-risk: deprecated HTTP+SSE transport

Spec 2026-07-28 readiness

Verdict: at-risk(deprecated HTTP+SSE transport). Measured against the 2026-07-28 specification (ruleset 2026-07-28-rc, compiled from the draft and re-diffed against the final text with no verdict-bearing rule changed) with read-only, keyless calls; see the ecosystem readiness report for how this server compares.

Accepts handshake-free calls	no
server/discover implemented	no
Session independence	yes
Routing headers enforced	yes

Advisory: negotiates 2025-06-18.

Evidence

Repository

github · missing· HTTP 404

https://github.com/ilizaran/soundscapes

Packages

No packages declared.

Remote endpoints

https://www.historicalsoundscapes.com/mcp/api/
sse · reachable· HTTP 200· initialize_ok

server.json

validagainst its declared schema

One of 19804 servers in the 2026-08-03 State of MCP census: 15974 healthy (80.7%), 2792 degraded (14.1%), 851 dead (4.3%), 187 unknown (0.9%).

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.historicalsoundscapes.www/semantic-search

Install 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.historicalsoundscapes.www/semantic-search --badge.

Open data, CC BY 4.0. How this census works - denominator, tiers, and what each check does.