Skills/PyPI/mcp-testing

mcp-testing@0.1.0b4

VERIFIED· not started

Publisher claims: "Local testing framework for MCP (Model Context Protocol) servers" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher golf-mcp · publishing for 542 daysInstalls 7,652Last detonated 4d ago
$claude mcp add mcp-testing -- uvx mcp-testing
WatchReport an issue

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

It will ask for
ANTHROPIC_API_KEYGEMINI_API_KEYMCP_AUTH_TOKENOPENAI_API_KEYConfiguration, not credentials: MAX_TASK_RESULT_SIZE_MB, MCP_SERVERS, NO_UPDATE_NOTIFIER
Where it talks to
no vendor host named in the codeAlso this-domain-definitely-does-not-exist-12345.com, evil.com, ryvn.run — not the publisher's domain; check what for before connecting.
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names this-domain-definitely-does-not-exist-12345.com, evil.com, ryvn.run as well as its own vendor. The guard injects ANTHROPIC_API_KEY, GEMINI_API_KEY, MCP_AUTH_TOKEN, OPENAI_API_KEY only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- uvx mcp-testing

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 2026-11-10 and scored it 84/100 (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 ·
0.1sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.1sprocessscript backend runs setup only
0.1sprocessno install scripts to re-run

Static findings

MEDIUM
Access to sensitive file pathssrc/test_mcp/security/security_tester.py:675 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"../../../etc/passwd", # Path traversalFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagesrc/test_mcp/cli/create_commands.py:128 · npx invocation of non-well-known package — may execute untrusted codeconsole.print(" npx -y @modelcontextprotocol/server-time")Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
Credential pass-through configurationsrc/test_mcp/security/security_tester.py:170 · Credential pass-through configuration — agent relays sensitive credentials# Pass token to transport layerFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST02
MEDIUM
Process kill commandsrc/test_mcp/mcp_client/client_manager.py:500 · Process kill command — agent can terminate processes# Force kill if still runningFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
HIGH
Access to sensitive file pathspyproject.toml:170 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files".env",Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagesrc/test_mcp/cli/create_commands.py:129 · npx invocation of non-well-known package — may execute untrusted codeconsole.print(" npx -y @modelcontextprotocol/server-fetch")Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
Access to sensitive file pathssrc/test_mcp/shared/file_utils.py:186 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesclick.echo("\nOr create a .env file in your project directory.")Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Access to sensitive file pathssrc/test_mcp/shared/file_utils.py:166 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files# Load .env file with default parent directory searchFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Access to sensitive file pathssrc/test_mcp/security/security_tester.py:1358 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"&& cat /etc/passwd",Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagesrc/test_mcp/mcp_client/client_manager.py:229 · npx invocation of non-well-known package — may execute untrusted codecommand_str: Command string (e.g., "npx -y @modelcontextprotocol/server-time")Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
Access to sensitive file pathssrc/test_mcp/security/security_tester.py:1393 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"root:", # from /etc/passwdFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagesrc/test_mcp/cli/setup_commands.py:122 · npx invocation of non-well-known package — may execute untrusted codeconsole.console.print(" npx -y @modelcontextprotocol/server-time")Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagesrc/test_mcp/cli/setup_commands.py:123 · npx invocation of non-well-known package — may execute untrusted codeconsole.console.print(" npx -y @modelcontextprotocol/server-fetch")Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagesrc/test_mcp/config/config_manager.py:30 · npx invocation of non-well-known package — may execute untrusted codedescription="Command to run server for stdio transport (e.g., 'npx -y @modelcontextprotocol/server-time')",Fix: Pin versions and sources; vendor anything fetched at install time.
AST06

Cost to the agent

Instructions loaded
≈53 tok
1 file · 81 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-testing@0.1.0b4 as of 4d ago. This is the package itself, not its dependencies.