# Link Preview Cache API (remote · link-preview-cache-api.onrender.com)

Same link preview data as link-preview-api, ~1/3 the price via a shared cache.

- Trust score: 75/100 (medium)
- Change this week: +52
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-04

## Components

- remote · `link-preview-cache-api.onrender.com`: 75/100 (this document), [markdown](https://verifymcp.io/servers/cmondillo-link-preview-cache-api/link-preview-cache-api.md), [page](https://verifymcp.io/servers/cmondillo-link-preview-cache-api/link-preview-cache-api)

## Channel facts

- Endpoint: `https://link-preview-cache-api.onrender.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-10-04.

- **Endpoint Security**: 57/100
  - 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 1 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.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - 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**: 69/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 36 tokens (~36/item across 1 items; 1 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% 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 1 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 1 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Link Preview Cache API MCP server?

Link Preview Cache API is a hosted endpoint at https://link-preview-cache-api.onrender.com/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 cmondillo-link-preview-cache-api 'https://link-preview-cache-api.onrender.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "cmondillo-link-preview-cache-api": {
      "url": "https://link-preview-cache-api.onrender.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "cmondillo-link-preview-cache-api": {
      "type": "http",
      "url": "https://link-preview-cache-api.onrender.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.cmondillo-link-preview-cache-api]
url = "https://link-preview-cache-api.onrender.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cmondillo-link-preview-cache-api": {
      "type": "remote",
      "url": "https://link-preview-cache-api.onrender.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add cmondillo-link-preview-cache-api --url 'https://link-preview-cache-api.onrender.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  cmondillo-link-preview-cache-api:
    url: "https://link-preview-cache-api.onrender.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "cmondillo-link-preview-cache-api": {
      "Transport": "http",
      "Url": "https://link-preview-cache-api.onrender.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add cmondillo-link-preview-cache-api -t streamable-http -u 'https://link-preview-cache-api.onrender.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "cmondillo-link-preview-cache-api": {
      "type": "http",
      "url": "https://link-preview-cache-api.onrender.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.

### 2026-10-01 (score 75, +57)

- [security improvement] HTTPS: unverified → pass
- [security improvement] Injection markers: unverified → pass
- [security improvement] Stability: unverified → pass
- [security improvement] Transport: fail → pass
- [security] Authorization: Authorisation not fully verified: no authorisation is required to call this server, and 1 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
- [functional improvement] Endpoint reachability: not serving MCP → reachable
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] MCP protocol: unverified → pass

### 2026-09-28 (score 18, −5)

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

### 2026-09-25 (score 23, 0)

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

### 2026-09-12 (score 23, −45)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Tool safety: pass → unverified
- [security regression] Stability: 0.50 → unverified
- [security regression] Transport: pass → fail
- [security] Authorization: Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the whole tool list to see what that exposes.
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-09-11 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-09 (score 67, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-07 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-28 (score 0)

- [functional improvement] Stability: unverified → 0.03

## MCP tools (1)

### `preview_url` (~36 tokens)

Fetch Open Graph / meta metadata for a public URL. Costs $0.003 USDC on Base.

Input parameters:

- `url` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/cmondillo-link-preview-cache-api/link-preview-cache-api#diagnostics

## Score history

- 2026-10-04: 75
- 2026-10-03: 75
- 2026-10-02: 75
- 2026-10-01: 75
- 2026-09-30: 18
- 2026-09-29: 18
- 2026-09-28: 18
- 2026-09-27: 23
- 2026-09-26: 23
- 2026-09-25: 23
- 2026-09-24: 23
- 2026-09-23: 23
- 2026-09-22: 23
- 2026-09-21: 23
- 2026-09-20: 23
- 2026-09-19: 23
- 2026-09-18: 23
- 2026-09-17: 23
- 2026-09-16: 23
- 2026-09-15: 23
- 2026-09-14: 23
- 2026-09-13: 23
- 2026-09-12: 23
- 2026-09-11: 68
- 2026-09-10: 67
- 2026-09-09: 67
- 2026-09-08: 66
- 2026-09-07: 66
- 2026-09-06: 65
- 2026-09-05: 65

## Common questions

### What is the Link Preview Cache API MCP server?

Link Preview Cache API is an MCP server listed in the public MCP registry as io.github.cmondillo/link-preview-cache-api. Same link preview data as link-preview-api, ~1/3 the price via a shared cache. This page covers its hosted endpoint (https://link-preview-cache-api.onrender.com/mcp).

### Is the Link Preview Cache API MCP server safe to use?

Link Preview Cache API scores 75 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 Link Preview Cache API MCP server expose?

Link Preview Cache API exposes 1 tool: preview_url. Their descriptions and schemas cost roughly 36 tokens of context every time the server is loaded.

### Does the Link Preview Cache API MCP server require authentication?

No. We connected to Link Preview Cache API without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Link Preview Cache API MCP server still maintained?

Link Preview Cache API is still listed as active in the MCP registry. We last reached this channel on 4 October 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://link-preview-cache-api.onrender.com/mcp
- Repository: https://github.com/cmondillo/tools
- Changelog RSS feed: https://verifymcp.io/servers/cmondillo-link-preview-cache-api/link-preview-cache-api.xml
- Changelog JSON feed: https://verifymcp.io/servers/cmondillo-link-preview-cache-api/link-preview-cache-api.json
- HTML version of this page: https://verifymcp.io/servers/cmondillo-link-preview-cache-api/link-preview-cache-api