# Underpriced AI (remote · underpricedai.com)

Resale prices for secondhand items from real eBay sold listings, with comps and a worth-it verdict.

- Trust score: 77/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `underpricedai.com`: 77/100 (this document), [markdown](https://verifymcp.io/servers/com-underpricedai-underpriced-ai/api-mcp.md), [page](https://verifymcp.io/servers/com-underpricedai-underpriced-ai/api-mcp)

## Channel facts

- Endpoint: `https://underpricedai.com/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 66/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1502 tokens (~250/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 33/100
  - Stability observed for 10 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Underpriced AI MCP server?

Underpriced AI is a hosted endpoint at https://underpricedai.com/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-underpricedai-underpriced-ai 'https://underpricedai.com/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-underpricedai-underpriced-ai": {
      "url": "https://underpricedai.com/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-underpricedai-underpriced-ai": {
      "type": "http",
      "url": "https://underpricedai.com/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-underpricedai-underpriced-ai]
url = "https://underpricedai.com/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-underpricedai-underpriced-ai": {
      "type": "remote",
      "url": "https://underpricedai.com/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-underpricedai-underpriced-ai --url 'https://underpricedai.com/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-underpricedai-underpriced-ai:
    url: "https://underpricedai.com/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-underpricedai-underpriced-ai": {
      "Transport": "http",
      "Url": "https://underpricedai.com/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-underpricedai-underpriced-ai -t streamable-http -u 'https://underpricedai.com/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-underpricedai-underpriced-ai": {
      "type": "http",
      "url": "https://underpricedai.com/api/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-20 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-18 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 74, 0)

- [security] The server rewrote its instructions, which are the text every model session reads

### 2026-09-14 (score 74, +1)

- [security] The server rewrote its instructions, which are the text every model session reads

### 2026-09-12 (score 73, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional regression] Schema quality: 195 → 227

### 2026-09-11 (score 73, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional improvement] Stability: unverified → 0.03

### 2026-09-10 (score 73)

First indexed and scored.

## MCP tools (6)

### `price_item` (~182 tokens)

Price an item

What a secondhand item sells for on eBay US: a calibrated estimate with a range, the recent real sold comps behind it, three list prices (fast, market, patient) with the 14-day sell chance, the net after eBay fees, and a worth-it verdict when you pass what the user would pay. Give image_url (a public https link to a photo) whenever one exists; a description alone works but reads less.

Input parameters:

- `condition` (string): Condition as the user states it.
- `cost` (number): What the user paid or would pay for it, in USD, for a worth-it verdict.
- `description` (string): What the item is: brand, model or pattern, size, any marks, completeness.
- `image_url` (string): Public https URL of a photo of the item. Preferred over description alone.

### `get_sold_comps` (~84 tokens)

Recent eBay sold comps

The most recent real eBay US sales for a search query (brand, model or pattern, a few specific words), with the count, median and quartiles. Use when the user wants to see what actually sold and for how much.

Input parameters:

- `query` (string, required): 3 to 6 specific words, brand and model first, like an eBay search.

### `worth_it` (~83 tokens)

Worth buying at this cost?

Net after eBay fees and a verdict (worth it / thin / pass) for an expected sale price and what the user would pay. Pure arithmetic; use price_item first when the sale price is unknown.

Input parameters:

- `cost` (number, required): What the user would pay for the item in USD.
- `expected_sale_price` (number, required): Expected eBay sale price in USD.

### `buy_credits` (~133 tokens)

Buy scan credits

Ways to pay for Underpriced AI scans. Without a choice it lists the credit packs (credits never expire), pay as you go ($0.25 per photo scan on a monthly bill, no cap), and for a signed-in user their balance. With a pack it returns a Stripe Checkout link for that user; with PAY_AS_YOU_GO it returns the link that puts a card on file so scans just run from then on. Anonymous callers get the pricing page link.

Input parameters:

- `pack` (string): A pack to buy, or PAY_AS_YOU_GO. Leave empty to see the options and the balance first.

### `get_scan_result` (~123 tokens)

Fetch a saved scan's result

For a signed-in user: the finished result for a scan on their account, in the same shape as price_item, once the sold comps have landed in the background. Call it with the account.scanId a photo price returned when that result said comps were still loading (about 20 seconds later), or to re-read any saved scan.

Input parameters:

- `cost` (number): What the user would pay, in USD, for a worth-it verdict.
- `scan_id` (string, required): The account.scanId from a signed-in price_item, or the saved-scan link.

### `list_on_ebay` (~191 tokens)

Prepare an eBay listing

For a signed-in user: turns a photo scan from price_item (account.scanId) into an inventory item with a draft eBay listing on their Underpriced AI account (title, list price defaulting to the market price, condition, description) and returns the link where they review and publish it in the app, plus whether eBay is connected and the connect link if not. It never publishes anything; publishing happens in the app after the user checks the listing.

Input parameters:

- `condition` (string): Overrides the condition read from the photo.
- `price` (number): List price in USD. Leave empty for the scan's market list price.
- `scan_id` (string, required): The account.scanId that price_item returned for a photo scan on this account (the saved-scan link works too).
- `title` (string): Overrides the generated listing title (80 characters, eBay's limit).

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-underpricedai-underpriced-ai/api-mcp#diagnostics

## Score history

- 2026-09-20: 77
- 2026-09-19: 76
- 2026-09-18: 76
- 2026-09-17: 75
- 2026-09-16: 75
- 2026-09-15: 74
- 2026-09-14: 74
- 2026-09-13: 73
- 2026-09-12: 73
- 2026-09-11: 73
- 2026-09-10: 73

## Common questions

### What is the Underpriced AI MCP server?

Underpriced AI is an MCP server listed in the public MCP registry as com.underpricedai/underpriced-ai. Resale prices for secondhand items from real eBay sold listings, with comps and a worth-it verdict. This page covers its hosted endpoint (https://underpricedai.com/api/mcp).

### Is the Underpriced AI MCP server safe to use?

Underpriced AI scores 77 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Underpriced AI MCP server expose?

Underpriced AI exposes 6 tools: price_item, get_sold_comps, worth_it, buy_credits, get_scan_result, list_on_ebay. Their descriptions and schemas cost roughly 796 tokens of context every time the server is loaded.

### Does the Underpriced AI MCP server require authentication?

No. We connected to Underpriced AI without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Underpriced AI MCP server still maintained?

Underpriced AI is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://underpricedai.com/api/mcp
- Website: https://underpricedai.com/mcp
- Changelog RSS feed: https://verifymcp.io/servers/com-underpricedai-underpriced-ai/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-underpricedai-underpriced-ai/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-underpricedai-underpriced-ai/api-mcp