mcp@2.3.15
VERIFIED· not startedPublisher claims: "PubNub Model Context Protocol MCP Server for Cursor and Claude" Observed in sandbox: no network, touches nothing outside the project, writes no memory.
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
MCP_OAUTH_ENABLEDPUBNUB_API_KEYConfiguration, not credentials: ADMIN_API_V2_URL, KV_TYPE_PATH, LOG_PRETTY, MCP_ANALYTICS_DEBUG, MCP_ANALYTICS_DISABLED, MCP_CLOUD_MODE, MCP_MODE, MCP_SESSION_SUPPORT, MCP_SUBSCRIBE_ANALYTICS_DISABLED, PUBNUB_ORIGIN, RESOURCE_PATH, SDK_DOCS_API_URL- Where it talks to
- pubnub.com, pubnubtools.com (its own)
- 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 MCP_OAUTH_ENABLED, PUBNUB_API_KEY and talks to pubnub.com, pubnubtools.com. 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.
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 85/100 (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 · 15 s · 2 scenarios · 0 deviationsStatic findings
"build": "rollup -c && chmod +x dist/index.js",Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.7. Function logs: a running Function's console.log/console.error output is PUBLISHED to theFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.build: "rollup -c && chmod +x dist/index.js",Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.…pplication.user_id"\`), so JSONPath resolution works against nested BO schemas. Pass secret_key when the keyset has Access Manager enabled — initializing with the secret k…Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.…, revision id, deployment id, and running status. To view the Function's console.log/console.error output, subscribe to its log channel, which follows the pattern output-rev-REVISIONID-key-KEYSETID (use the subscribe_and_receive_pubnub_mes…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why."If the keyset has Access Manager enabled you also need to pass secret_key " +Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose."Usage: npx @pubnub/mcp [options]",Fix: Pin versions and sources; vendor anything fetched at install time.Cost to the agent
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 @pubnub/mcp@2.3.15 as of 14 h ago. This is the package itself, not its dependencies.