Pocketlantern

Name: Pocketlantern
Author: pocketlantern

by pocketlanternversion 0.2.0i★ –iRuns on your computer

Registry nameio.github.pocketlantern/pocketlantern

Install

Overview

Description from the maker (original English)

Blocker-aware decision layer for AI coding agents, grounded in source-linked, time-sensitive facts.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "pocketlantern": {
      "command": "npx",
      "args": [
        "-y",
        "@pocketlantern/mcp-server"
      ]
    }
  }
}

Run this in your terminal

claude mcp add pocketlantern -- npx -y @pocketlantern/mcp-server

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "pocketlantern": {
      "command": "npx",
      "args": [
        "-y",
        "@pocketlantern/mcp-server"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "pocketlantern": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@pocketlantern/mcp-server"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account pocketlantern, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32433 servers in this category
Published to the registry more recently than 5% of the other 32433 servers in this category
Basic checks equal to or better than 100% of the other 32433 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Pocketlantern safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 7 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Symantec Cloud DLP AIops

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

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MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

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Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

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Symantec Cloud DLP AIops

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Governed Symantec Cloud DLP — 14 MCP tools, read-only with audit.

Runs on your computerUpdated today

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

PocketLantern

Your AI agent sounds confident. It missed the blockers.

Prices shift, versions break, licenses change. PocketLantern is a blocker-aware decision layer for AI coding agents, grounded in source-linked, time-sensitive facts.

Try these queries

Ask your AI agent after installing PocketLantern:

"Which auth provider — Clerk, Auth0, or Cognito?"

⚠️ Cognito password hashes are permanently non-exportable

⚠️ Auth0 password export requires support ticket — Free tier excluded ⚠️ Auth0 Rules/Hooks EOL 2026-11-18 — Actions not portable ✅ Clerk has the most flexible migration path

"Should I upgrade to Next.js 16?"

⚠️ Sync API access fully removed — all dynamic calls must be awaited

⚠️ Custom webpack config breaks next build ⚠️ next lint removed — switch to Biome or ESLint CLI ⚠️ Requires Node.js 20.9.0+, TypeScript 5.1.0+, React 19.0+ ✅ Plan phased migration — codemod doesn't cover webpack or middleware

"Can I use the OpenAI Realtime API?"

⚠️ gpt-4o-realtime-preview removed 2026-05-07

⚠️ Beta interface (realtime=v1 header) removed same date ⚠️ GA event schema incompatible — 4 event renames ✅ Start on GA from day one — or plan dual-stack migration

Three questions. Three blocker types. Same AI, different facts.

Quick start

Prerequisites: Node.js >= 22, an MCP client (Claude Code, Cursor, etc.)

npm install -g pocketlantern

Claude Code

In your project directory:

cd your-project

pocketlantern init

init registers the MCP server in ~/.claude.json and adds a one-line rule to your project's CLAUDE.md. Restart Claude Code (Ctrl+C, then run claude again), then ask your first query.

Cursor / Windsurf / other MCP clients

Add to your MCP config (Cursor: ~/.cursor/mcp.json):

"mcpServers": { "pocketlantern": { "command": "pocketlantern-mcp" } } }

Then add this line to your project rules (.cursorrules, Kiro steering file, etc.):

For technology decisions, upgrades, migrations, or licensing questions: before finalizing your answer, check the PocketLantern MCP server's search_cards tool for blockers in these bundled decision cards — your training data may be stale.

Reload MCP servers: Cursor — Cmd+Shift+P -> "MCP: Restart Servers". Windsurf — restart the editor.

More queries to try

"How did Vercel pricing change with Fluid Compute?" Billing split to Active CPU + Memory, shared-process concurrency breaks isolation

"Prisma or Drizzle for Edge/serverless?" Prisma v7 ESM + driver adapter breaking, Edge preview-only; Drizzle 0.30-1.0 also breaking

Verify installation

pocketlantern doctor               # check installation status

pocketlantern search "auth pricing" # search cards from CLI

How it works

PocketLantern is an MCP server. Your AI agent calls search_cards — and gets source-linked decision cards plus source-linked blocker warnings where available.

Agent asks question

-> search_cards("clerk vs auth0 authentication") -> 3 cards + 5 blocker warnings (lock-in, EOL, export restrictions) -> Agent answers with source-linked constraints

Local cardset. Instant lookup. No vector database. No embeddings. Keyword search, card links, and source-linked blocker warnings where available. The value is in source-linked decision cards, not clever retrieval alone.

search_cards("auth", constraints:["serverless"]) -> cards + blockers

get_card("auth/clerk-vs-auth0-vs-cognito-2026") -> full card with facts get_related_cards(...) -> connected topics

What's included

Blocker-aware decision cards across 27 categories — plus source-linked blocker warnings from the bundled graph index. Ships with the npm package, works immediately, no network, no account:

Category	What it covers
auth	Vendor lock-in, migration pain, SSO, RBAC, passkeys
frontend	Next.js, React, Svelte, Vite, Angular upgrade blockers
database	Prisma, Drizzle, Postgres, Aurora, Neon, Supabase
ai	OpenAI API migrations, model pricing, batch vs streaming
serverless	Vercel, Cloudflare Workers, Lambda cost and runtime
infra	Hosting platforms, Terraform, Node.js LTS, Python EOL
backend	Supabase vs Firebase, Express, job queues, realtime sync
+ 18 more	deployment, devtools, testing, security, compliance, ...

What a card looks like

Each card is a structured YAML file with source-linked facts and official reference links:

id: auth/clerk-vs-auth0-vs-cognito-2026

title: Clerk vs Auth0 vs Cognito Under Current Pricing and Feature Changes problem: Select an auth vendor given recent pricing shifts, MAU economics, ... constraints: [cost-sensitive, low-ops, enterprise, compliance, serverless] candidates:

name: Clerk summary: "Pro starts at $20/mo, includes 50,000 MRUs per app..." when_to_use: "Choose for small-team + low-ops + cost-sensitive SaaS..." tradeoffs: "Best DX and fastest implementation..." cautions: "Be precise about org-member limits..." links:
https://clerk.com/pricing
https://clerk.com/docs/guides/organizations/configure
name: Auth0

...

name: Amazon Cognito

...

tags: [auth, clerk, auth0, pricing, passkeys, b2b, compliance] related_cards: [auth/sso-for-b2b-saas, auth/rbac-vs-abac-vs-rebac] updated: 2026-03-14

See packages/schema/src/card.ts for the full schema definition.

Project structure

pocketlantern/

packages/schema/ <- Card schema (zod + TypeScript types) apps/mcp-server/ <- MCP server (search, retrieval, tool handlers) apps/cli/ <- CLI (validate, search, init, doctor) packages/knowledge/ <- Decision cards + graph index (data package) docs/ <- User guides & roadmap

Monorepo: pnpm workspace. Build order: schema -> knowledge (no build) -> mcp-server -> cli.

Development

pnpm build              # Build all packages

pnpm test # Run tests (299 tests) pnpm test:coverage # Run with coverage report pnpm lint # ESLint pnpm format:check # Prettier check

Missing a topic? Request coverage in Card Requests.

Contributing

Contributions to the tool (schema, MCP server, CLI, search) are welcome. See CONTRIBUTING.md for guidelines.

License

MIT

Pocketlantern

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Symantec Cloud DLP AIops

README from the maker

PocketLantern

Try these queries

Quick start

Claude Code

Cursor / Windsurf / other MCP clients

More queries to try

Verify installation

How it works

What's included

What a card looks like

...

...

Project structure

Development

Contributing

License