HTML Cloud
NPM · HTML-CLOUD-MCP
Share AI-generated HTML as a private, end-to-end encrypted link. Update it later at the same link.
Available components
Last scanned (21 minutes ago)
Scores higher than 61% of npm servers
Category Documents and Files
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 0 of 1 dependencies flagged as unhealthy. View diagnostics → Pass
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 8 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability65
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 820 tokens (~410/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- 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 Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
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.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
- Package version: 0.5.0 → 0.6.0 functional
- 31 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 +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.
- 28 Oct 26 +15
- Malware scan: unverified → pass ▲ security
- 27 Oct 26 −9
- Malware scan: pass → unverified ▼ security
- CVE-2023-54404 no longer affects this package ▲ security
- Known CVEs: fail → pass ▲ security
- Dependency health: 0.86 → 1.00 ▲ functional
- Package version: 0.5.1 → 0.6.0 functional
- 26 Oct 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.
- 24 Oct 26 −4
- CVE-2023-54404 affects this package: high ▼ security
- Known CVEs: pass → fail ▼ security
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 5 Nov 2026 · Analysed npm/html-cloud-mcp@0.6.0
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 1 package
| Packages resolved | 1 |
|---|---|
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
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 →
share_html Share HTML privately ~399
Share a self-contained HTML file (an artifact, report, presentation, dashboard, or prototype) as a private, end-to-end encrypted link. The HTML is encrypted locally with AES-256-GCM before upload — html.cloud stores only ciphertext and cannot read it, and no account is required. Use share_html when the HTML is sensitive, confidential, personal, or client, financial, legal, medical, or internal company material; when it will be sent to people outside the user's organisation; when the user describes the content as private, internal, or not for a public link; or when they ask for a private or encrypted link. When unsure, ask which the user prefers. Pass the document inline as html, or write it to an .html file and pass its path as path — use path for large pages, so the whole document does not have to fit in a tool argument. Returns a share link to give to others and a private edit link. Keep the edit link: pass it to update_html to change the page later without changing the share link. For changes to something already shared in this conversation, use update_html instead of sharing again.
| Name | Type | Req | Description |
|---|---|---|---|
| expires | string | – | Days until the link expires. Defaults to 30. |
| html | string | – | The full, self-contained HTML document to share. Use path instead for large documents. |
| link_name | string | – | A short, human-readable name added to the share link so it says what it is, e.g. "Q3 sales report" gives https://html.cloud/v/{id}/q3-sales-report. Unlike the page, this name is not encrypted: it is… |
| path | string | – | Absolute path of a local .html file to share instead of passing html inline. |
No output schema declared.
No examples provided.
update_html Update a shared HTML page ~257
Replace the content of an HTML page that was already shared with share_html, using its private edit link. The share link stays exactly the same, so anyone who already has it sees the new version. The new HTML is encrypted locally with the same key as before; html.cloud never sees the content. Use this when the user asks to change, fix, revise, or add to a page you shared earlier in the conversation — pass the full updated HTML document, not a diff: inline as html, or as the path of an .html file as path. Use path for large pages; do not fall back to share_html if the document is too big to pass inline.
| Name | Type | Req | Description |
|---|---|---|---|
| edit_link | string | yes | The private edit link returned by share_html (https://html.cloud/e/{id}#{key}). |
| html | string | – | The complete, self-contained HTML document that replaces the current one. Use path instead for large documents. |
| link_name | string | – | The link_name given to share_html for this page, if any, so the returned share link matches the one already handed out. |
| path | string | – | Absolute path of a local .html file whose content replaces the current page, instead of passing html inline. |
No output schema declared.
No examples provided.
How do I install the HTML Cloud MCP server?
HTML Cloud runs locally as an npm package, launched with npx -y html-cloud-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · html-cloud-mcp
claude mcp add cloud-html-html-cloud -- npx -y html-cloud-mcp
What is the HTML Cloud MCP server?
HTML Cloud is an MCP server listed in the public MCP registry as cloud.html/html-cloud. Share AI-generated HTML as a private, end-to-end encrypted link. Update it later at the same link. This page covers its npm package (html-cloud-mcp).
Is the HTML Cloud MCP server safe to use?
HTML Cloud scores 79 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. 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 HTML Cloud MCP server expose?
HTML Cloud exposes 2 tools: share_html, update_html. Their descriptions and schemas cost roughly 656 tokens of context every time the server is loaded.
Is the HTML Cloud MCP server still maintained?
HTML Cloud is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the HTML Cloud MCP server under?
HTML Cloud declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.