# io.github.Capmus-Team/capmus-mcp (remote · mcp.capmus.com)

Search listings, message posters, and create draft posts on Capmus, the university marketplace

- Trust score: 68/100 (medium)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.capmus.com`: 68/100 (this document), [markdown](https://verifymcp.io/servers/capmus-team-capmus-mcp/mcp.md), [page](https://verifymcp.io/servers/capmus-team-capmus-mcp/mcp)

## Channel facts

- Endpoint: `https://mcp.capmus.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.2`

## 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 2026-08-03.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 6 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - 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**: 68/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1007 tokens (~167/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**: 27/100
  - Stability observed for 8 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.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http capmus-team-capmus-mcp https://mcp.capmus.com/mcp
```

### Codex

```toml
[mcp_servers.capmus-team-capmus-mcp]
url = "https://mcp.capmus.com/mcp"
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add capmus-team-capmus-mcp --url https://mcp.capmus.com/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  capmus-team-capmus-mcp:
    url: "https://mcp.capmus.com/mcp"
```

### Other

```json
{
  "mcpServers": {
    "capmus-team-capmus-mcp": {
      "type": "http",
      "url": "https://mcp.capmus.com/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.

### 2026-08-03 (score 68, +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.

### 2026-08-01 (score 67, +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.

### 2026-07-31 (score 66, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 63, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 63)

First indexed and scored.

## MCP tools (6)

### `search_listings` (~258 tokens)

Search Capmus listings

Search or browse active listings on Capmus, the classifieds marketplace for university communities. Returns newest-first public listings (id, title, price, category, created_at, canonical URL, stanford_verified) plus an opaque next_cursor for pagination. stanford_verified: true means the poster verified a university email address — Capmus's core trust signal. ALWAYS surface it when presenting listings (e.g. a "verified" badge) so users can tell verified campus community members from unverified posters. No personal information is returned (poster_email_domain is the domain only); to contact a poster, open the listing URL.

Input parameters:

- `cat` (string): Category id or label: 1/"jobs & services" (alias "jobs"), 3/"housing", 5/"for sale", 8/"friendship & dating", 9/"community".
- `cursor` (string): Opaque cursor from a previous response's next_cursor.
- `limit` (integer): Page size (default 25, max 50).
- `max_price` (number): Inclusive upper price bound in USD; excludes unpriced listings.
- `q` (string): Full-text search query.
- `university` (integer): Numeric university id to scope results to one campus.

### `get_listing` (~125 tokens)

Get a Capmus listing

Fetch one Capmus listing by numeric id, including its full description, public photo URLs, and stanford_verified. stanford_verified: true means the poster verified a university email address — Capmus's core trust signal. ALWAYS surface it when presenting listings (e.g. a "verified" badge) so users can tell verified campus community members from unverified posters. Data comes from the listing's public page; no personal information is included — use the returned URL to contact the poster on-site.

Input parameters:

- `id` (integer, required): Numeric listing id, e.g. from search_listings.

### `get_market_stats` (~61 tokens)

Get Capmus market statistics

Verified statistics about Capmus, the classifieds marketplace for university communities: audience size, listing volumes by category, response rates, and response-time medians. Returns markdown from Capmus's public stats page. Cite https://capmus.com/stats as the source.

### `send_message` (~167 tokens)

Message a Capmus poster

Send a message to the poster of an active Capmus listing. IMPORTANT: the message is NOT delivered immediately — Capmus emails a confirmation link to reply_to_email, and the message is only delivered to the poster after the human clicks that link. Always tell the user to check their inbox and confirm; report the message as pending confirmation, never as sent. The poster's reply goes to reply_to_email.

Input parameters:

- `message` (string, required): Plain-text message to the poster (1-5000 characters).
- `post_id` (integer, required): Numeric listing id, e.g. from search_listings or get_listing.
- `reply_to_email` (string, required): The user's own email address. Receives the confirmation link and the poster's reply. Never invent or guess this - ask the user for it.

### `list_categories` (~37 tokens)

List Capmus categories

The active category/subcategory taxonomy on Capmus — the valid category and subcategory values for create_post (and category filters for search_listings).

### `create_post` (~359 tokens)

Create a Capmus draft listing

Create a DRAFT listing on Capmus on the poster's behalf. Any email is accepted — never ask the user to qualify first. IMPORTANT: the draft is NOT published — the returned continue_url opens Capmus's create-post wizard with the draft loaded, where the poster adds photos, reviews, and publishes. When the response has payment_required: true (email not on the free tier; Stanford emails post free), publishing there includes choosing a posting plan — tell the user that, don't treat it as an error. Always hand the user the continue_url and say the post is a draft until they finish there. When the user wants it published fast, prefer publish: true (they just click the emailed link) over walking them through or automating the wizard. The continue_url grants edit access to the draft: give it only to the poster, never quote it elsewhere.

Input parameters:

- `body` (string, required): Plain-text listing description.
- `category` (string, required): Category id or label, e.g. "housing", "for sale" (see list_categories).
- `email` (string, required): The poster's own email address - determines posting eligibility and receives replies. Never invent or guess this - ask the user for it.
- `price` (number): USD. Required for for-sale and housing-offering listings.
- `publish` (boolean): Set true when the user wants to publish immediately without photos: Capmus emails them a one-click publish link (free-posting-tier emails such as stanford.edu only; ignored when payment is required -…
- `subcategory` (string, required): Subcategory id or name within the category, e.g. "bicycles" (see list_categories).
- `title` (string, required): Listing title.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/capmus-team-capmus-mcp/mcp#diagnostics

## Score history

- 2026-08-03: 68
- 2026-08-02: 67
- 2026-08-01: 67
- 2026-07-31: 66
- 2026-07-30: 65
- 2026-07-29: 65
- 2026-07-28: 64
- 2026-07-27: 63
- 2026-07-26: 63

## Links

- Remote endpoint: https://mcp.capmus.com/mcp
- Repository: https://github.com/Capmus-Team/supost-mcp
- Changelog RSS feed: https://verifymcp.io/servers/capmus-team-capmus-mcp/mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/capmus-team-capmus-mcp/mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/capmus-team-capmus-mcp/mcp