Skills/PyPI/patchdiff-mcp

patchdiff-mcp@0.2.0

VERIFIED· not started

Publisher claims: "MCP-first PatchDIFF backend" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher paragon-ux · publishing for 8 daysInstalls 361Last detonated 2 h ago
$claude mcp add patchdiff-mcp -- uvx patchdiff-mcp
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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

It will ask for
PATCHDIFF_DATABASE_URLConfiguration, not credentials: PATCHDIFF_APP_NAME, PATCHDIFF_ENV, PATCHDIFF_MCP_PROFILE, PATCHDIFF_MCP_RESPONSE_MODE, PATCHDIFF_NODE_BINARY, PATCHDIFF_PERF_EVENTS, PATCHDIFF_PERF_MEMORY, PATCHDIFF_STRICT_OBSERVATION_MODE, PATCHDIFF_WAYMARK_MODE, PATCHDIFF_WAYMARK_WORKERS, PATCHDIFF_WORKSPACE_ROOT, PATCHDIFF_WORKSPACE_SYNC_ON_SAVE
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
server startup · the tool list · tool behavior

Connect it with a scoped credential, under the guard. It asks for PATCHDIFF_DATABASE_URL and talks to its vendor. Give the credential to the guard, not the server: the value never enters the server's environment and only travels to the host you bind. What the tools do with a real credential was not observed.

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

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 2026-11-14 and scored it 87/100 (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
0.2sprocessdependency install exit 1 ·
0.2sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.2sprocessscript backend runs setup only
0.2sprocessno install scripts to re-run

Static findings

MEDIUM
Python subprocess execution detectedbackend/app/services/waymark_worker.py:206 · Python subprocess execution detectedself.proc = subprocess.Popen([self.owner.node, "--max-old-space-size=768", str(self.owner.script), str(self.root)],Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedbackend/app/services/waymark_adapter.py:162 · Python subprocess execution detectedwith subprocess.Popen(argv, stdin=source, stdout=subprocess.PIPE, stderr=subprocess.PIPE,Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
HIGH
Hidden zero-width characters detectedbackend/app/core/advisories.py:10 · Hidden zero-width characters detected — may conceal content_ZWJ = "‍"Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07

Cost to the agent

Instructions loaded
≈44 tok
1 file · 77 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 patchdiff-mcp@0.2.0 as of 2 h ago. This is the package itself, not its dependencies.