MCP spec conformance: 7 requirement(s) violated (via @hasmcp/mcp-spec-test)

[hasmcp-dev]

Re-running the @hasmcp/mcp-spec-test MCP conformance suite against this server (launched with uvx mcp-server-qdrant and either QDRANT_LOCAL_PATH or QDRANT_URL=:memory:) still turns up a real, reproducible protocol issue: when a client sends an initialize request that omits the protocolVersion field, or offers an unsupported version, the server never responds at all — the connection just hangs until the client's 10-second timeout fires, rather than the server defaulting to a supported version or replying with an error. This was confirmed consistently across two separate re-runs with different (valid) Qdrant backend configs, so it doesn't look like a one-off timing fluke. Both spec revisions the server negotiates (2026-07-28 and 2025-11-25) were tested and show the same root cause (a hanging response to a version-less/unsupported-version handshake), so this single issue covers both — see the report below for the 2026-07-28 run; the 2025-11-25 run showed the identical two version-negotiation failures (plus fewer "not verified" cases, since that revision doesn't define the server/discover probe this suite also exercises).

Conformance report

MCP 2026-07-28 conformance report

Verdict: not conformant — 7 requirements violated.

Target	uvx mcp-server-qdrant
Transport	stdio
Revision tested	2026-07-28
Revisions supported	2026-07-28, 2025-11-25
Passed	7
Failed	7
Not verified	22
Cases applied	36
Tool	@hasmcp/mcp-spec-test 0.1.1

Failed (7)

the server deviates from the spec here

server/discover

• server/discover is answered without a session or handshake
  expected 200, got 0: {"_raw":"no response within 10000ms"}
• server/discover advertises the versions the server can serve
  Cannot read properties of undefined (reading 'supportedVersions')
• server/discover is a CacheableResult with usable cache hints
  Cannot read properties of undefined (reading 'ttlMs')
• server/discover reports server identity and capabilities
  Cannot read properties of undefined (reading 'capabilities')
• server/discover is stable across calls within its own TTL
  Cannot read properties of undefined (reading 'supportedVersions')
• server/discover advertises a revision this suite supports
  Cannot read properties of undefined (reading 'supportedVersions')

Version negotiation

• a request with no version at all is served on the default
  a version-less request must be served, got 0: {"_raw":"no response within 10000ms"}

Passed (7)

checked and conformant

• server/discover: the suite is reading a schema that matches the features it selected
• Result envelope: schema sanity: the envelope fields match the features selected
• Official SDK interop: the official SDK does not yet implement the newest revision
• Official SDK interop: a stock official-SDK client completes the handshake
• Official SDK interop: the handshake settles on a revision inside the supported window
• Official SDK interop: a stock official-SDK client can list tools
• subscriptions/listen: schema sanity: SubscriptionsListenResult requires _meta and resultType

(22 further cases came back "not verified" — skipped, not passed — because they depend on a working server/discover/handshake response; full detail available on request.)

How to reproduce

With Docker:

docker pull hasmcp/mcp-spec-test:latest
docker run --rm -e QDRANT_LOCAL_PATH=/tmp/qdrant-db -e COLLECTION_NAME=test-collection hasmcp/mcp-spec-test -c "uvx mcp-server-qdrant"

(on Apple Silicon/arm64 hosts, add --platform linux/amd64 to both commands — the published image is amd64-only but runs fine under emulation)

Without Docker (npx):

npx @hasmcp/mcp-spec-test@latest -c "uvx mcp-server-qdrant" 

(set QDRANT_LOCAL_PATH=/tmp/qdrant-db and COLLECTION_NAME=test-collection in the environment first)

---

This issue was filed by an automated MCP spec-conformance sweep. If this turns out to be a false positive (e.g. specific to how the test harness drives the handshake), please feel free to close it — no offense intended, just flagging what the suite found in case it's useful.