Skills/npm/functype-mcp-server

functype-mcp-server@1.27.0

VERIFIED

Publisher claims: "MCP server for functype documentation lookup and TypeScript code validation" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher jordanburke · publishing for 543 daysInstalls 3,927Last detonated 11 min ago
$claude mcp add functype-mcp-server -- npx -y functype-mcp-server
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Coverage

Server started and answered tools/list.
Tested
MCP initialize and tools/list · every tool description, for hidden instructions · every file read, file written and host contacted by what ran
Not tested
what the tools do when called with real credentials

Before you give it your token

It will ask for
no credential variables read in the code
Where it talks to
no vendor host named in the code
What the honeypot saw
no credential files read · no network
What we could not test
what the tools do when called with real credentials

Reasonable to connect. No credential asked for, no third-party host named, Server started and answered tools/list.

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios) on 2026-11-15 and scored it 95/100 (Verified). It did what it claims and nothing else we could detect: no undeclared network egress, no credential reads, no persistent instruction writes. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 48 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
28sprocessdependency install exit 0
48sclaimed5 tools: search_docs, get_type_api, get_interfaces, validate_code, set_functype_version
48stools093ce386c8cda0d2
48stools6bec8d226399d425
48stoolse36602753aba4c9a
48stools8199a407b962d844
48stoolsc25a1e2fae04b884
48sprocessscript backend runs setup only
48sprocessno install scripts to re-run

Static findings

No findings across 686 lines in 8 files.

Cost to the agent

Instructions loaded
≈59 tok
1 file · 8 in bundle
Tool list per prompt
≈587 tok
5 tools · 117 per tool
Handshake
1153 ms
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 148

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

Not checked against OSV yet; the weekly check has not reached this version.