Robin Saige we check the tools AI agents call

npm package ws has 241560546 weekly downloads but sdk

io.github.nexus-mcp-infra/npm-package-ws-has-241560546-weekly-downloads-but-sdk

Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema di

— the operator's own registry description reported

Publisher io.github.nexus-mcp-infra · first seen 2026-08-12 · endpoint https://npm-package-ws-has-241560546-w-production.up.railway.app/mcp

allow
verdict
mid-solo
cluster
ok_tools
answers
5
tools served

Dependency rating derived

allow
allow — alive & usable · action ● · V n/a
allow — because answers ●, 5 tools legible (band A) ●, no confirmed drift in 2 probes ●; not yet checked: truth (0 runs)

Cluster mid-solo · distinctiveness 0.537 (moderate). Every figure is a percentile or class within the 11,094-server censussee the whole spectrum.

Does it answer? Q1 · observed
answersalive_tools
latency94 ms
vs populationtypical
protocolcurrent
authopen
Can it be used? Q4 · observed
tools5
vs populationmid
capabilities4
harnessA
Did it hold when checked? Q3–Q4 · derived
identitysolo
servers on its host1
verifiabilityunassessed
duplicate inventoryno
drift events0
answers trueno primary

🔏 Signed receipt rr_6ffe75e2d1f2dcc67b92a094 · ed25519 · key rs-rcpt-2026-08 — this rating is tamper-evident; an agent gets the full signature from check_server and can verify it against the published key.

Q1Does it answer?alive & usable — 2 probes ●evidence ↓
Q2What is it?action ● evidence ↓
Q3Can it be checked?V n/a for this kind ◐evidence ↓
Q4Did it hold?harness A · truth not yet run · no drift ●evidence ↓
Q5What company does it keep?mid-solo · 1 on its host (context, not verdict) ◐evidence ↓

● observed · ◐ derived · ○ reported — the verdict synthesizes Q1–Q4; Q5 is context. Methodology →

History observed

Every probe we made, oldest → newest (2 shown, 2026-08-12 → 2026-08-14). Green answered · amber answered-but-walled · red no useful answer. A gap in our cadence is a gap in coverage, not evidence about the server.

changelog (1 events)
datetypewhat changed
2026-08-12outcomefirst probe: ok_tools

What kind of tools these are derived

Verification only means something relative to a tool's NATURE — an email-sender has no "true answer", a generator has no answer key. Classification evidence: classified from tool names/descriptions/annotations WE OBSERVED. What checking applies to each kind (the full methodology →):

naturetoolsmeaning what checking applies
action4changes the worldno true answer exists; we check the CONTRACT (destructive/read-only/idempotent declarations, error legibility) and never fire real actions
unclassified1not classifiable from its textTier-1 only until its tools describe themselves

Tools last seen observed

nexus_npm_package_ws_has_241560546_weekly_down_close_websocket_session nexus_npm_package_ws_has_241560546_weekly_down_drain_ws_frame_buffer nexus_npm_package_ws_has_241560546_weekly_down_inspect_ws_session_telemetry nexus_npm_package_ws_has_241560546_weekly_down_open_websocket_session nexus_npm_package_ws_has_241560546_weekly_down_send_typed_ws_frame

Harness readiness observed

Can an agent's harness pick this tool and call it correctly? Graded on the three things an agent reads — name, description, typed parameters. Band A — an agent can pick and call these reliably.

legibility checktools passingok
name is clear & specific5/5
has a description5/5
description is substantive5/5
parameters are typed5/5
parameters are described5/5

5 of 5 tools graded · 5 with a captured input schema. RS-008, Tier-1 — no domain knowledge, applies to any tool. “Alive” is not the same as “usable”.

Truth checks observed

Not in the Tier-2 trade lane, or not yet checked. Tier-2 re-derives a server's answers against published primary sources — see truth checks.

Protocol conformance observed

2025-06-18
protocol version
session model
1.28.1
server version nexus-npm-package-ws-has-241560546-weekly-down

Capabilities: experimental prompts resources tools

Drift observed

No confirmed drift on record. Baseline set 2026-08-14; changes appear here after human review.

raw probe records
probed (UTC) outcomehttpmsprotocol
2026-08-14T19:59:53Zok_tools200942025-06-18
2026-08-12T05:35:10Zok_tools200912025-06-18

Watch or embed this verdict

verdict badge

Operators: put the live verdict in your README — it updates with every census, links back here, and is a dated observation, never a warranty:

[![Robin Saige verdict](https://robinsaige.com/badge/io.github.nexus-mcp-infra/npm-package-ws-has-241560546-weekly-downloads-but-sdk.svg)](https://robinsaige.com/s/io.github.nexus-mcp-infra/npm-package-ws-has-241560546-weekly-downloads-but-sdk)

Depend on it? Subscribe to its change feed — outcome changes and confirmed drift, no account needed. Building on it? The full dossier as JSON — verdict, rating, truth checks, history — stable enough to gate CI on.

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