Thrifle

Name: Thrifle
Author: ejazmu

by ejazmuversion 1.0.0i★ –iRuns in the cloud

Registry namecom.thrifle/mcp

Install

Overview

Description from the maker (original English)

US return policies, price-match rules, discounts, deals and Amazon price verdicts. Read-only.

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 in the cloud
Transport: Streamable HTTP
Category: Other

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://api.thrifle.com/api/mcp

Run this in your terminal

claude mcp add --transport http thrifle https://api.thrifle.com/api/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "thrifle": {
      "url": "https://api.thrifle.com/api/mcp"
    }
  }
}

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": {
    "thrifle": {
      "type": "http",
      "url": "https://api.thrifle.com/api/mcp"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://api.thrifle.com/api/mcp

Menu names can differ slightly by plan and over time.

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

We have not read this server’s tool list yet; we check endpoints in rotation.

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 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain thrifle.com (the registry checks domain ownership)
… 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32683 servers in this category
Published to the registry more recently than 39% of the other 32683 servers in this category
Basic checks equal to or better than 100% of the other 32683 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 Thrifle 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 in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, MCP Server Autocad Lisp Helper

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

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MCP Server Autocad Lisp Helper

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High-precision static analysis and debug server for AutoCAD AutoLISP (.lsp) files.

Runs on your computerUpdated today

Install

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.

Thrifle MCP server

US return policies, price-match rules, discounts, deals, credit-card terms and Amazon buy-or-wait verdicts — as read-only tools for Claude, ChatGPT, Cursor and any MCP client.

https://api.thrifle.com/api/mcp

No auth. No signup. 24 tools. Every answer links to the thrifle.com page it comes from.

What you can ask

Tool	Example
`get_return_policy`	What is Costco's return policy on a laptop?
`compare_return_policies`	Is it easier to return to Target or Walmart?
`search_return_policies`	Which furniture stores offer free returns?
`get_price_match_policy`	Does Best Buy price match Amazon?
`who_will_price_match`	Who will match this Amazon price on a TV?
`get_merchant_discounts` · `search_discounts`	Does Home Depot have a military discount?
`get_cancellation_guide`	How do I cancel Planet Fitness?
`get_birthday_freebie` · `search_birthday_freebies`	What does Starbucks give you on your birthday?
`search_deals` · `get_deal` · `get_deal_of_the_day` · `get_store_deals`	Is there a deal on AirPods Pro right now?
`predict_amazon_price`	Should I buy this Amazon product now or wait?
`search_credit_cards` · `get_credit_card` · `get_store_credit_cards`	Does the Lowe's card use deferred interest?
`get_money_monitor` · `get_price_pulse`	What is the average credit-card APR right now?
`check_product_recalls`	Has this product been recalled?
`about_thrifle`	What is Thrifle and what does it cover?

The data behind these tools: a return-policy database covering 2,250 US retailers with an A+–D− grade computed from the policy's own terms, price-match and price-adjustment policies, military/student discount programmes, birthday offers, cancellation guides, a curated deal feed, a credit-card database built from issuer pricing pages, and price history for hundreds of thousands of Amazon products. All of it is editor-verified and every record carries a last_verified date.

Connect it

Claude.ai / Claude Desktop (every plan; Free allows one custom connector) Settings → Connectors → Add custom connector → paste the URL → leave authentication empty.

Claude Code

claude mcp add --transport http thrifle https://api.thrifle.com/api/mcp

ChatGPT — Settings → Apps & Connectors → Create (developer mode) → paste the URL, no authentication.

Cursor — click the badge above, or add to ~/.cursor/mcp.json:

{ "mcpServers": { "thrifle": { "url": "https://api.thrifle.com/api/mcp" } } }

VS Code — click the badge above, or code --add-mcp '{"name":"thrifle","type":"http","url":"https://api.thrifle.com/api/mcp"}'.

Perplexity (+ Custom connector → Remote), Grok (grok.com/connectors → Custom), Mistral Le Chat (Connectors → Custom MCP Connector), Gemini CLI (httpUrl under mcpServers), Gemini Enterprise (Manage team → Connected apps → Add MCP Server) all accept the same URL.

Claude Code plugin — this repo is also a Claude Code plugin (.claude-plugin/plugin.json, .mcp.json, and a thrifle-shopping skill that teaches the model which tool answers which question).

Try it from a terminal

curl -s https://api.thrifle.com/api/mcp | jq .tools

curl -s -X POST https://api.thrifle.com/api/mcp \ -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_return_policy","arguments":{"merchant":"Costco"}}}'

Run it yourself

git clone https://github.com/ejazmu/thrifle-mcp && cd thrifle-mcp

npm install npm start # http://127.0.0.1:8787/mcp, reading Thrifle's public API npm test # 17 protocol + shaping fixtures, no network needed

This is the same code that serves api.thrifle.com/api/mcp. THRIFLE_API_BASE points it at a different API base; MCP_RATE_PER_MIN / MCP_RATE_PER_DAY set the per-IP limits; MCP_API_KEYS (comma-separated) lists keys that bypass them via Authorization: Bearer.

How it is built

Stateless Streamable HTTP. One McpServer + transport per request, JSON responses, no sessions — nothing to resume, nothing shared between callers, nothing for a CDN to buffer. GET on the endpoint returns a human-readable discovery document.
Tools call Thrifle's public REST API, never a database. That keeps the MCP answer identical to the website's answer: affiliate-link handling, expired-deal rules and serve-time grading all apply automatically. src/api-client.js is a 60-line loopback fetch.
Shapers, not raw payloads. src/shape.js turns each API response into the facts plus the canonical thrifle.com url and a cite block, and drops internal fields. Pure functions, all covered by fixtures.
Read-only by construction. Every tool declares readOnlyHint: true; the catalogue in src/tools.js has no write path.
Price verdicts never trigger a live fetch — they read the tracked-price database only.

Fair use and licensing

Free for assistants answering a person's question: 60 calls a minute and 1,500 a day per address. Bulk or commercial use is licensed — see thrifle.com/data-licensing; a licence comes with a key that lifts the limits. Deal buy_url values are thrifle.com redirects and may be affiliate links.

Links

Docs: https://thrifle.com/mcp · Return-policy database: https://thrifle.com/return-policy · Price Predict: https://thrifle.com/price-predict · Money: https://thrifle.com/money · Contact: hello@thrifle.com

Thrifle

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

MCP Server Autocad Lisp Helper

README from the maker

Thrifle MCP server

What you can ask

Connect it

Try it from a terminal

Run it yourself

How it is built

Fair use and licensing

Links