Skills/PyPI/openwebui-mcp-server

openwebui-mcp-server@0.2.0

VERIFIED· not started

Publisher claims: "MCP server for managing Open WebUI - users, groups, models, knowledge bases, and more" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher stephan-schielke-steph.schie-open-webui-mcp-server · publishing for 238 daysInstalls 145Last detonated 15 h ago
$claude mcp add openwebui-mcp-server -- uvx openwebui-mcp-server
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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
API_KEY_OUTPUT_FILEWEBUI_ADMIN_PASSWORDWEBUI_API_KEYConfiguration, not credentials: MCP_HTTP_HOST, MCP_HTTP_PATH, MCP_HTTP_PORT, MCP_TRANSPORT, WEBUI_URL
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 API_KEY_OUTPUT_FILE, WEBUI_ADMIN_PASSWORD, WEBUI_API_KEY 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 openwebui-mcp-server

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 2026-11-13 and scored it 89/100 (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
File type combined with upload actionscripts/init-api-key.sh:66 · File type combined with upload action — agent may exfiltrate local data filesresponse=$(curl -s -b /tmp/owui-cookies.txt -X POST "${WEBUI_URL}/api/v1/auths/api_key")Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actionscripts/init-api-key.sh:49 · File type combined with upload action — agent may exfiltrate local data filesresponse=$(curl -s -c /tmp/owui-cookies.txt -X POST "${WEBUI_URL}/api/v1/auths/signin" \Fix: 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)mise.toml:40 · MCP server using network transport (SSE/HTTP) — data sent over networkMCP_SERVER_URL = "http://{{env.MCP_HTTP_HOST}}:{{env.MCP_HTTP_PORT}}{{env.MCP_HTTP_PATH}}"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_integration.py:16 · MCP server using network transport (SSE/HTTP) — data sent over networkMCP_SERVER_URL = os.getenv("MCP_SERVER_URL", "http://127.0.0.1:8000/mcp")Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04

Cost to the agent

Instructions loaded
≈62 tok
1 file · 27 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 openwebui-mcp-server@0.2.0 as of 14 h ago. This is the package itself, not its dependencies.