SmartTokenGuard
io.github.nwjnjjj/smart-token-guard
About SmartTokenGuard
SmartTokenGuard is an MCP server published by the GitHub account nwjnjjj. Stop burning credits on broken AI video: check every render before you pay for the next one.
It runs on your own machine: your AI client starts it from the MCP bundle package smart-token-guard-1.2.2.mcpb at version 1.2.2, or you can connect to the hosted version instead.
It asks for one secret: STG_LICENSE_KEY. Give it a key with the least access that still works.
Version 1.2.2 was published on 14 September 2026, and the source code is public, so you can read it before installing.
Written from the registry entry. 9 automated checks on the registry entry and the package code: 7 pass, 0 warn, 0 fail, 2 info. How we check.
What it asks for
| Variable | Required | Secret | Description |
|---|---|---|---|
STG_LICENSE_KEY | Yes | Yes | License key from your Polar receipt (Starter or Pro plan). |
Checks
| Check | Result | Detail |
|---|---|---|
| Source repository linked | Pass | https://github.com/nwjnjjj/smart-token-guard |
| Version pinned | Pass | Every package has an explicit version |
| Remote uses HTTPS | Pass | All remote endpoints use https:// |
| Secrets requested | Info | Asks for 1 secret: STG_LICENSE_KEY |
| Known package registry | Pass | All packages come from npm, PyPI, OCI, NuGet or MCPB |
| Namespace ownership | Info | Name verified via GitHub account nwjnjjj |
| Registry text aimed at the AI | Pass | Description and settings contain no hidden characters or instructions to the AI |
| Code red flags | Pass | Read 8 files in the bundle: no obfuscation, encoded execution, credential reads or data-collection endpoints found |
| Text aimed at the AI | Pass | No hidden characters or instructions to the AI in 8 files, including comments and the README |
Popularity & health: 49 / 100
Worked out from public numbers and our own checks, not from user reviews or ratings. It says how used and how looked-after a server is, not whether it is safe.
0 forks, 0 merged pull requests. Sources: GitHub, npm, PyPI (pypistats.org) and Hacker News (Algolia), fetched 2026-10-31.
What people say
No Hacker News threads link to its source code.
Look further: search Reddit, search Hacker News, read its GitHub issues. These are not reviews we checked.
Facts
| Registry name | io.github.nwjnjjj/smart-token-guard |
|---|---|
| Publisher | GitHub account nwjnjjj |
| How the name is verified | Name verified via GitHub account nwjnjjj. The registry ties the name prefix to that account or domain; it does not check the code. |
| Type | Local package and a hosted remote |
| Packages | mcpb https://github.com/nwjnjjj/smart-token-guard/releases/download/v1.2.2/smart-token-guard-1.2.2.mcpb 1.2.2 (stdio) |
| Remote endpoints | streamable-http https://stg-agent-560636228350.asia-east1.run.app/mcp |
| Version | 1.2.2 |
| Published | |
| Last updated | |
| Source repository | https://github.com/nwjnjjj/smart-token-guard |
| Website | https://nwjnjjj.github.io/smart-token-guard/ |
| Category | AI & media generation (assigned by keyword rule, not by hand) |
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