Skills/npm/reddit-mcp-buddy

reddit-mcp-buddy@1.3.0

VERIFIED

Publisher claims: "Clean, LLM-optimized Reddit MCP server: browse, search, and analyze Reddit, with opt-in posting and commenting behind server-side safety rails." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher karanb192 · publishing for 423 daysInstalls 10,923Last detonated 37 h ago
$claude mcp add reddit-mcp-buddy -- npx -y reddit-mcp-buddy
WatchReport an issue

Coverage

Server started and answered tools/list.
Tested
MCP initialize and tools/list · every tool description, for hidden instructions · every file read, file written and host contacted by what ran
Not tested
what the tools do when called with real credentials

Before you give it your token

It will ask for
REDDIT_CLIENT_SECRETREDDIT_PASSWORDREDDIT_REFRESH_TOKEN or --oauthConfiguration, not credentials: REDDIT_BUDDY_ALLOWED_HOSTS, REDDIT_BUDDY_ALLOWED_ORIGINS, REDDIT_BUDDY_HOST, REDDIT_BUDDY_HTTP, REDDIT_BUDDY_NO_CACHE, REDDIT_BUDDY_PORT, REDDIT_BUDDY_WRITE, REDDIT_CLIENT_ID, REDDIT_USER_AGENT, REDDIT_USERNAME
Where it talks to
no vendor host named in the codeAlso reddit.com — 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
what the tools do when called with real credentials

Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names reddit.com as well as its own vendor. The guard injects REDDIT_CLIENT_SECRET, REDDIT_PASSWORD, REDDIT_REFRESH_TOKEN only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- npx -y reddit-mcp-buddy

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) on 2026-11-13 and scored it 83/100 (Verified). It did what it claims and nothing else we could detect: no undeclared network egress, no credential reads, no persistent instruction writes. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 27 s · 2 scenarios
t+CategoryObserved action
0.0sprocessno install scripts in bundle
6.8sprocessdependency install exit 0
27sfilesystemread ~/.reddit-mcp-buddy/auth.json outside project
27sclaimed6 tools: browse_subreddit, search_reddit, get_post_details, user_analysis, find_subreddits, reddit_explain
27sprocessscript backend runs setup only
27sprocessno install scripts to re-run

Static findings

MEDIUM
File type combined with upload actiondist/cli.js:290 · File type combined with upload action — agent may exfiltrate local data filesconsole.log('Posting also needs REDDIT_BUDDY_WRITE=true and stdio transport.');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 actiondist/cli.js:397 · File type combined with upload action — agent may exfiltrate local data filesconsole.log(' reddit-mcp-buddy --oauth Get a refresh token for an approved web app (--write adds posting scopes)');Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
Process kill commanddist/mcp-server.js:699 · Process kill command — agent can terminate processesconsole.error(`Or kill the process using port ${port}: lsof -ti:${port} | xargs kill -9`);Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
File permission modification commanddist/core/auth.js:143 · File permission modification command — agent changes file ownership/permissions// On some systems, chmod after write may be neededFix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05

Cost to the agent

Instructions loaded
≈74 tok
1 file · 36 in bundle
Tool list per prompt
≈1,945 tok
6 tools · 324 per tool
Handshake
589 ms
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 328

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 reddit-mcp-buddy@1.3.0 as of 36 h ago. This is the package itself, not its dependencies.