Skills/PyPI/mcp-client-kit

mcp-client-kit@0.11.1

VERIFIED· not started

Publisher claims: "mcp-client-kit — generate typed Python wrappers for any MCP server (codegen skill + CLI)." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher svd · publishing for 149 daysInstalls 216Last detonated 7d ago
$claude mcp add mcp-client-kit -- uvx mcp-client-kit
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Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
the dependency install step · every file read, file written and host contacted by what ran
Not tested
server startup · the tool list · tool behavior

What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

Code inventory arrives with this version's next honeypot run.
It will ask for
unknown until the next run
Where it talks to
unknown until the next run
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Not enough was observed to say yet. Not started: dependency install failed; the server itself was not observed. This version's code has not been inventoried for credentials and hosts either; both arrive with its next honeypot run (popular servers first). `vet-skills try mcp-client-kit` runs it now and prints the full answer.

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; not started: dependency install failed; the server itself was not observed) on 2026-11-07 and scored it 82/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.1sprocessdependency install exit 1
0.1sprocessexec /usr/bin/date
0.1sprocessexec /usr/bin/timeout
0.1sprocessexec .venv/bin/mcpgen
0.1sclaimedno tools/list reply (exit 0)
0.2sprocessscript backend runs setup only
0.2sprocessno install scripts to re-run

Static findings

MEDIUM
Python subprocess execution detectedtests/test_bridge.py:6551 · Python subprocess execution detectedprocs = [subprocess.Popen([sys.executable, str(script), name, str(creds)]) for name in ("alpha", "beta")]Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
File permission modification commandmcpgen/_bridge.py:659 · File permission modification command — agent changes file ownership/permissions(``chmod 0600`` file, ``0700`` dir, atomic write via tmp file).Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
File permission modification commandtests/test_bridge.py:6570 · File permission modification command — agent changes file ownership/permissions"""Taking a lock must not chmod a directory it did not create.Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
File type combined with upload actionCLAUDE.md:60 · File type combined with upload action — agent may exfiltrate local data files`<server>.shapes.json` is the hand-editable file that drives typed codegen. Key fields per tool entry: `unwrap` (key path to unwrap), `return_model` (TypedDict name), `fields` (field → Python type), `Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
Python subprocess execution detectedmcpgen/discovery.py:121 · Python subprocess execution detectedresult = subprocess.run(cmd, capture_output=True, text=True, timeout=15)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
MCP server using network transport (SSE/HTTP)CLAUDE.md:73 · MCP server using network transport (SSE/HTTP) — data sent over network`servers.example.json` → copy to `servers.json` (or set `$MCPGEN_SERVERS`). Config is `{"mcpServers": {"name": {"type": "http", "url": "..."}}}` — same shape as Claude Code's MCP config.Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_bridge.py:4855 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig.write_text(json.dumps({"mcpServers": {"legacy": {"type": "sse", "url": "https://x.example/sse"}}}))Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_config.py:16 · MCP server using network transport (SSE/HTTP) — data sent over network{"mcpServers": {"s": {"url": "https://x/mcp", "clientName": "My App"}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
File permission modification commandCLAUDE.md:77 · File permission modification command — agent changes file ownership/permissionsStored at `~/.mcpgen/credentials.json` (chmod 0600) or OS keychain via `--cred-backend keyring`. `migrate-creds` moves between backends.Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_bridge.py:5286 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig.write_text(json.dumps({"mcpServers": {"legacy": {"type": "sse", "url": "https://x.example/sse"}}}))Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_config.py:29 · MCP server using network transport (SSE/HTTP) — data sent over networkurls, names, cmds, hdrs = _bridge._parse_servers({"mcpServers": {"s": {"url": "https://x/mcp"}}})Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
File permission modification commandtests/test_bridge.py:332 · File permission modification command — agent changes file ownership/permissions"""_file_load must chmod a world-readable file to 0600 and emit a warning."""Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_bridge.py:4835 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig.write_text(json.dumps({"mcpServers": {"modern": {"type": "http", "url": "https://x.example/mcp"}}}))Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_bridge.py:5307 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig.write_text(json.dumps({"mcpServers": {"legacy": {"type": "sse", "url": "https://x.example/sse"}}}))Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_bridge.py:4816 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig.write_text(json.dumps({"mcpServers": {"legacy": {"type": "sse", "url": "https://x.example/sse"}}}))Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_config.py:24 · MCP server using network transport (SSE/HTTP) — data sent over network_, names, _, _ = _bridge._parse_servers({"mcpServers": {"s": {"url": "https://x/mcp", "client_name": "Snake App"}}})Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
File type combined with upload actionskills/generate-mcp-runner/SKILL.md:3 · File type combined with upload action — agent may exfiltrate local data filesdescription: Use when generating a runnable, shape-aware smoke-test `run.py` for an MCP server's generated wrappers. Reads existing artifacts produced by `generate-mcp-wrappers` (wrapper module, shapeFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_config.py:164 · MCP server using network transport (SSE/HTTP) — data sent over network_, _, _, hdrs = _bridge._parse_servers({"mcpServers": {"plain": {"url": "https://x/mcp"}}})Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_config.py:194 · MCP server using network transport (SSE/HTTP) — data sent over networktypes = _bridge._parse_server_types({"mcpServers": {"legacy": {"type": "sse", "url": "https://x/sse"}}})Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04

Cost to the agent

Instructions loaded
≈22,492 tok
4 files · 65 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

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

No advisories in OSV for mcp-client-kit@0.11.1 as of 4 h ago. This is the package itself, not its dependencies.