Skills/PyPI/openapi-mcp-gateway

openapi-mcp-gateway@0.8.0

VERIFIED· not started

Publisher claims: "Turn any OpenAPI specification into a Model Context Protocol (MCP) server with a single command." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher mroops0111 · publishing for 196 daysInstalls 597Last detonated 18 h ago
$claude mcp add openapi-mcp-gateway -- uvx openapi-mcp-gateway
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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
CLIENT_SECRETMY_API_TOKEN or --auth-token / --auth-client-secret / --auth-authorization-url / --auth-token-url
Where it talks to
no vendor host named in the codeAlso fastapi.local — 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 fastapi.local as well as its own vendor. The guard injects CLIENT_SECRET, MY_API_TOKEN only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- uvx openapi-mcp-gateway

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 81/100 (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
0.2sprocessscript backend runs setup only
0.2sprocessno install scripts to re-run

Static findings

HIGH
Collapsed <details> block carrying instructionsREADME.md:173 · Collapsed <details> block carrying instructions<summary><b>Token Forwarding Policy</b></summary> The MCP spec requires a server to accept only tokens minted for itself, and forbids relaying one to an upstreaFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Collapsed <details> block carrying instructionsREADME.md:61 · Collapsed <details> block carrying instructions<summary><b>API-Key Header instead of a Bearer Token</b></summary> Use a config file so the header name is explicit: ```yaml servers: - name: petstore spec: httFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
MEDIUM
Python subprocess execution detectedtests/smoke/conftest.py:22 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
HIGH
Collapsed <details> block carrying instructionsREADME.md:544 · Collapsed <details> block carrying instructions<summary><b>Auth in the FastAPI Integration</b></summary> Because the gateway runs in-process and routes through `httpx.ASGITransport`, gateway and upstream shaFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Collapsed <details> block carrying instructionsREADME.md:521 · Collapsed <details> block carrying instructions<summary><b>Decorating Routes with <code>@mcp_tool</code></b></summary> ```python from fastapi import FastAPI from openapi_mcp_gateway import Gateway, mcp_tool Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Access to sensitive file pathssrc/openapi_mcp_gateway/settings.py:7 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesfrom .env import resolve_env_varFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Collapsed <details> block carrying instructionsREADME.md:257 · Collapsed <details> block carrying instructions<summary><b>Token Lifetimes</b></summary> Under `authorization_code` the gateway's own access token lives 1 hour and its refresh token 24 hours. Each refresh isFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01

Cost to the agent

Instructions loaded
≈64 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 openapi-mcp-gateway@0.8.0 as of 18 h ago. This is the package itself, not its dependencies.