Plainport
REMOTE · PLAINPORT.EXPORTITNOW.WORKERS.DEV · SCANNED SEP 26
Deterministic web intake and data utilities for autonomous agents.
Available components
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. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability70
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1011 tokens (~101/item across 10 items; 10 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management73
- Stability observed for 22 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage79
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 28% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
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.
remote · plainport.exportitnow.workers.dev
claude mcp add --transport http dev-workers-exportitnow-plainport-plainport 'https://plainport.exportitnow.workers.dev/mcp'
{
"mcpServers": {
"dev-workers-exportitnow-plainport-plainport": {
"url": "https://plainport.exportitnow.workers.dev/mcp"
}
}
} {
"servers": {
"dev-workers-exportitnow-plainport-plainport": {
"type": "http",
"url": "https://plainport.exportitnow.workers.dev/mcp"
}
}
} [mcp_servers.dev-workers-exportitnow-plainport-plainport] url = "https://plainport.exportitnow.workers.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"dev-workers-exportitnow-plainport-plainport": {
"type": "remote",
"url": "https://plainport.exportitnow.workers.dev/mcp",
"enabled": true
}
}
} openclaw mcp add dev-workers-exportitnow-plainport-plainport --url 'https://plainport.exportitnow.workers.dev/mcp' --transport streamable-http
mcp_servers:
dev-workers-exportitnow-plainport-plainport:
url: "https://plainport.exportitnow.workers.dev/mcp" {
"McpServers": {
"dev-workers-exportitnow-plainport-plainport": {
"Transport": "http",
"Url": "https://plainport.exportitnow.workers.dev/mcp"
}
}
} assistant mcp add dev-workers-exportitnow-plainport-plainport -t streamable-http -u 'https://plainport.exportitnow.workers.dev/mcp'
{
"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.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 +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.
- 22 Sept 26 +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.
- 20 Sept 26 +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.
- 18 Sept 26 +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.
- 16 Sept 26 +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.
- 14 Sept 26 +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.
- 12 Sept 26 +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.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 26 Sept 2026 · Probed https://plainport.exportitnow.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=exportitnow.workers.dev | CN=WE1,O=Google Trust Services,C=US | 16 Sept 2026 | 15 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 4bf1978ee34e7de13342eb7a66667e2 |
| SANs: exportitnow.workers.dev, *.exportitnow.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of plainport.exportitnow.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 400 |
| Header | Value |
|---|---|
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://plainport.exportitnow.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://plainport.exportitnow.workers.dev/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
diff_text Diff text ~100
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.
| Name | Type | Req | Description |
|---|---|---|---|
| after | string | yes | – |
| before | string | yes | – |
| granularity | string | yes | – |
| ignore_whitespace | boolean | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
extract_links Extract page links ~100
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.
| Name | Type | Req | Description |
|---|---|---|---|
| include_external | boolean | yes | – |
| max_links | integer | yes | – |
| url | string | yes | Absolute public HTTP or HTTPS URL without embedded credentials. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
extract_metadata Extract page metadata ~95
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.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | Absolute public HTTP or HTTPS URL without embedded credentials. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
fetch_markdown Fetch readable Markdown ~110
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.
| Name | Type | Req | Description |
|---|---|---|---|
| max_chars | integer | yes | – |
| url | string | yes | Absolute public HTTP or HTTPS URL without embedded credentials. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
html_to_markdown Convert HTML to Markdown ~88
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.
| Name | Type | Req | Description |
|---|---|---|---|
| base_url | string | – | – |
| html | string | yes | – |
| max_chars | integer | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
inspect_robots Inspect robots policy ~109
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.
| Name | Type | Req | Description |
|---|---|---|---|
| path | string | yes | – |
| url | string | yes | Absolute public HTTP or HTTPS URL without embedded credentials. |
| user_agent | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
inspect_url Inspect URL response ~95
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.
| Name | Type | Req | Description |
|---|---|---|---|
| method | string | yes | – |
| url | string | yes | Absolute public HTTP or HTTPS URL without embedded credentials. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
parse_feed Parse web feed ~95
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.
| Name | Type | Req | Description |
|---|---|---|---|
| max_items | integer | yes | – |
| url | string | yes | Absolute public HTTP or HTTPS URL without embedded credentials. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
parse_sitemap Parse sitemap ~93
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.
| Name | Type | Req | Description |
|---|---|---|---|
| max_entries | integer | yes | – |
| url | string | yes | Absolute public HTTP or HTTPS URL without embedded credentials. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
validate_json_schema Validate JSON Schema ~96
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.
| Name | Type | Req | Description |
|---|---|---|---|
| draft | string | yes | – |
| instance | – | yes | – |
| schema | – | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
| ok | – | yes | – |
No examples provided.
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.