# Plainport (remote · plainport.exportitnow.workers.dev)

Deterministic web intake and data utilities for autonomous agents.

- Trust score: 74/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-26

## Components

- remote · `plainport.exportitnow.workers.dev`: 74/100 (this document), [markdown](https://verifymcp.io/servers/dev-workers-exportitnow-plainport-plainport/plainport.md), [page](https://verifymcp.io/servers/dev-workers-exportitnow-plainport-plainport/plainport)

## Channel facts

- Endpoint: `https://plainport.exportitnow.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## 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 2026-09-26.

- **Endpoint Security**: 63/100
  - 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 enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - 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**: 70/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 1011 tokens (~101/item across 10 items; 10 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 73/100
  - Stability observed for 22 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 79/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 28% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 11 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 Plainport MCP server?

Plainport is a hosted endpoint at https://plainport.exportitnow.workers.dev/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 dev-workers-exportitnow-plainport-plainport 'https://plainport.exportitnow.workers.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-workers-exportitnow-plainport-plainport": {
      "url": "https://plainport.exportitnow.workers.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-workers-exportitnow-plainport-plainport": {
      "type": "http",
      "url": "https://plainport.exportitnow.workers.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-workers-exportitnow-plainport-plainport]
url = "https://plainport.exportitnow.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-workers-exportitnow-plainport-plainport": {
      "type": "remote",
      "url": "https://plainport.exportitnow.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-workers-exportitnow-plainport-plainport --url 'https://plainport.exportitnow.workers.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-workers-exportitnow-plainport-plainport:
    url: "https://plainport.exportitnow.workers.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-workers-exportitnow-plainport-plainport": {
      "Transport": "http",
      "Url": "https://plainport.exportitnow.workers.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-workers-exportitnow-plainport-plainport -t streamable-http -u 'https://plainport.exportitnow.workers.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "dev-workers-exportitnow-plainport-plainport": {
      "type": "http",
      "url": "https://plainport.exportitnow.workers.dev/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.

### 2026-09-25 (score 74, 0)

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

### 2026-09-24 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-22 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-20 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-18 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-14 (score 69, +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.

### 2026-09-12 (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.

## MCP tools (10)

### `fetch_markdown` (~110 tokens)

Fetch readable Markdown

Fetches one public HTTP/HTTPS page and returns its primary readable content as Markdown. Use this for article or documentation body text without page chrome. It does not run JavaScript; use a browser tool for client-rendered pages. Native text/markdown responses are preserved. Limit: 8 s, 5 redirects, 768 KiB remote body, 150k output characters.

Input parameters:

- `max_chars` (integer, required)
- `url` (string, required): Absolute public HTTP or HTTPS URL without embedded credentials.

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `inspect_url` (~95 tokens)

Inspect URL response

Resolves a public URL through bounded redirects and returns status plus a safe allowlist of HTTP headers. Use HEAD for cheap reachability/type checks and GET when a server mishandles HEAD. Use extract_metadata for HTML semantic metadata. Limit: 8 s, 5 redirects, 768 KiB only for GET.

Input parameters:

- `method` (string, required)
- `url` (string, required): Absolute public HTTP or HTTPS URL without embedded credentials.

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `extract_metadata` (~95 tokens)

Extract page metadata

Fetches one public HTML page and extracts title, description, canonical URL, robots directives, Open Graph, Twitter Card, advertised feeds, and parsed JSON-LD. Use this when an agent needs page identity or structured data rather than body text. Limit: 8 s, 5 redirects, 768 KiB, 50 JSON-LD blocks.

Input parameters:

- `url` (string, required): Absolute public HTTP or HTTPS URL without embedded credentials.

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `extract_links` (~100 tokens)

Extract page links

Fetches one public HTML page and returns unique normalized HTTP/HTTPS links with anchor text, rel values, and same-origin classification. Use this for bounded navigation discovery; it does not crawl the returned links. Limit: 8 s, 5 redirects, 768 KiB, 500 links.

Input parameters:

- `include_external` (boolean, required)
- `max_links` (integer, required)
- `url` (string, required): Absolute public HTTP or HTTPS URL without embedded credentials.

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `parse_feed` (~95 tokens)

Parse web feed

Fetches and normalizes RSS 2.0, Atom 1.0, or JSON Feed into a stable item list. Use this when consuming update feeds without format-specific parsing. It does not fetch linked articles. Limit: 8 s, 5 redirects, 768 KiB, 100 items.

Input parameters:

- `max_items` (integer, required)
- `url` (string, required): Absolute public HTTP or HTTPS URL without embedded credentials.

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `parse_sitemap` (~93 tokens)

Parse sitemap

Fetches one uncompressed XML sitemap and returns either URL entries or child sitemap references. Use this for site structure discovery. Sitemap indexes are not recursively expanded; call this tool on each child explicitly. Limit: 8 s, 5 redirects, 768 KiB, 1,000 entries.

Input parameters:

- `max_entries` (integer, required)
- `url` (string, required): Absolute public HTTP or HTTPS URL without embedded credentials.

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `inspect_robots` (~109 tokens)

Inspect robots policy

Fetches an origin's robots.txt and evaluates one path for a named user agent using longest-match allow/disallow precedence. Also returns crawl delay and declared sitemaps. Use this before automated retrieval; the result is policy guidance, not authorization. Limit: 8 s, 5 redirects, 768 KiB, 50 sitemap declarations.

Input parameters:

- `path` (string, required)
- `url` (string, required): Absolute public HTTP or HTTPS URL without embedded credentials.
- `user_agent` (string, required)

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `html_to_markdown` (~88 tokens)

Convert HTML to Markdown

Converts supplied HTML into readable Markdown without fetching a URL. Use this when the agent already has HTML. Provide base_url only to resolve relative links; use fetch_markdown when Plainport should retrieve the page. Limit: 200k input characters, 150k output characters.

Input parameters:

- `base_url` (string)
- `html` (string, required)
- `max_chars` (integer, required)

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `diff_text` (~100 tokens)

Diff text

Computes a deterministic line- or word-level diff and returns typed add/remove/equal parts. Use this when an agent needs structured change data. Split highly divergent large documents if the computation limit is reached. Limit: 200k combined characters, 2,000 result parts, 8 ms diff budget.

Input parameters:

- `after` (string, required)
- `before` (string, required)
- `granularity` (string, required)
- `ignore_whitespace` (boolean, required)

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

### `validate_json_schema` (~96 tokens)

Validate JSON Schema

Validates a JSON value against a supplied JSON Schema using draft 4, 7, 2019-09, or 2020-12. Use this to verify generated or extracted structured data. It performs validation only and does not mutate the instance. Limit: 512 KiB request, 40 nesting levels, 100 returned errors.

Input parameters:

- `draft` (string, required)
- `instance` (required)
- `schema` (required)

Output parameters:

- `data` (object)
- `meta` (object)
- `ok`

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-workers-exportitnow-plainport-plainport/plainport#diagnostics

## Score history

- 2026-09-26: 74
- 2026-09-25: 74
- 2026-09-24: 74
- 2026-09-23: 73
- 2026-09-22: 73
- 2026-09-21: 72
- 2026-09-20: 72
- 2026-09-19: 71
- 2026-09-18: 71
- 2026-09-17: 70
- 2026-09-16: 70
- 2026-09-15: 69
- 2026-09-14: 69
- 2026-09-13: 68
- 2026-09-12: 68
- 2026-09-11: 67
- 2026-09-10: 67
- 2026-09-09: 67
- 2026-09-08: 66
- 2026-09-07: 66
- 2026-09-06: 65
- 2026-09-05: 65
- 2026-09-04: 64

## Common questions

### What is the Plainport MCP server?

Plainport is an MCP server listed in the public MCP registry as dev.workers.exportitnow.plainport/plainport. Deterministic web intake and data utilities for autonomous agents. This page covers its hosted endpoint (https://plainport.exportitnow.workers.dev/mcp).

### Is the Plainport MCP server safe to use?

Plainport scores 74 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 Plainport MCP server expose?

Plainport exposes 10 tools: fetch_markdown, inspect_url, extract_metadata, extract_links, parse_feed, and 5 more. Their descriptions and schemas cost roughly 981 tokens of context every time the server is loaded.

### Does the Plainport MCP server require authentication?

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

### Is the Plainport MCP server still maintained?

Plainport is still listed as active in the MCP registry. We last reached this channel on 26 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://plainport.exportitnow.workers.dev/mcp
- Website: https://plainport.exportitnow.workers.dev/
- Changelog RSS feed: https://verifymcp.io/servers/dev-workers-exportitnow-plainport-plainport/plainport.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-workers-exportitnow-plainport-plainport/plainport.json
- HTML version of this page: https://verifymcp.io/servers/dev-workers-exportitnow-plainport-plainport/plainport