htmldropSAFE
Publish HTML for agents — one API call, MCP server included
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
htmldrop
Publish anything for agents — one API call, MCP server included.
English · 한국어 · 日本語 · 简体中文 · Español · Français · Deutsch
htmldrop turns any HTML, Markdown, PDF, or image artifact into a shareable link in seconds. Reports, dashboards, charts, demos — anything an agent (or a human) creates. Markdown/text/JSON render into a clean reader page; PDFs and images are served as-is. No git, no build, no dashboard.
Try it now: [htmldrop.link](https://htmldrop.link) — drag & drop an HTML file, paste HTML source, or POST to the API.
How it works
curl -X POST https://htmldrop.link/publish \
-H "Content-Type: application/json" \
-d '{"html":"Hello agents","title":"Demo"}'{
"url": "https://happy-otter-42.htmldrop.link",
"id": "...",
"subdomain": "happy-otter-42",
"expires_at": "2026-07-17T00:00:00.000Z"
}Every link gets its own subdomain, an auto-generated Open Graph preview card, and a TTL — shared artifacts don't live forever.
Connect your agent (MCP)
The hosted MCP server liv
7ac0dcce537aOBSERVED · 2026-10-10Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.
claude mcp add htmldrop-mcp --env CLOUDFLARE_R2_ACCESS_KEY_ID=${CLOUDFLARE_R2_ACCESS_KEY_ID} --env CLOUDFLARE_R2_SECRET_ACCESS_KEY=${CLOUDFLARE_R2_SECRET_ACCESS_KEY} --env KEY_TTL_DAYS=${KEY_TTL_DAYS} --env RATE_LIMIT_KEY_PER_MINUTE=${RATE_LIMIT_KEY_PER_MINUTE} -- npx -y [email protected]{
"mcpServers": {
"htmldrop-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"CLOUDFLARE_R2_ACCESS_KEY_ID": "${CLOUDFLARE_R2_ACCESS_KEY_ID}",
"CLOUDFLARE_R2_SECRET_ACCESS_KEY": "${CLOUDFLARE_R2_SECRET_ACCESS_KEY}",
"KEY_TTL_DAYS": "${KEY_TTL_DAYS}",
"RATE_LIMIT_KEY_PER_MINUTE": "${RATE_LIMIT_KEY_PER_MINUTE}"
}
}
}
}Exposed tools (1)
0 read · 1 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
publish_html | write | Publish an HTML or markdown artifact (or fetch a remote HTML page) and get a shareable URL. Markdown is rendered into a clean reader page. Useful for sharing reports, dashboards, visualizations, or any document produced by an agent. |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | WARN |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- declared (4 observation(s))
- Shell
- none-observed
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (10)
'whale', 'wolf', 'worm', 'zebra', 'beacon', 'canyon', 'comet', 'crystal', 'delta', 'dune',
for (const ip of ['127.0.0.1', '10.1.2.3', '172.16.5.5', '192.168.0.1', '169.254.169.254', '100.64.0.1', '0.0.0.0']) {await expect(safeFetch('http://169.254.169.254/latest/meta-data/')).rejects.toThrow(/private or reserved/);await expect(safeFetch('http://127.0.0.1/')).rejects.toThrow(/private or reserved/);await expect(safeFetch('http://169.254.169.254/latest/meta-data/')).rejects.toThrow(/private or reserved/);@aws-sdk/client-s3, @fontsource/gaegu, @fontsource/inter, @napi-rs/canvas, dotenv, express, express-rate-limit, marked
| `POST /publish` | JSON `{ html \| markdown, title, ttl_days, password, url }` | Primary endpoint || `POST /publish` | JSON `{ html \| markdown, title, ttl_days, password, url }` | Haupt-Endpoint || `POST /publish` | JSON `{ html \| markdown, title, ttl_days, password, url }` | Endpoint principal || `POST /publish` | JSON `{ html \| markdown, title, ttl_days, password, url }` | Endpoint principal |Gates applied: no_behavioural_pass.
7ac0dcce537afull audit observations/trust-audit/mcp-server/vin-spiegel__htmldrop.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-10 | 7ac0dcce537a | SAFE | B | 89 | first audit |
Questions
What is the htmldrop MCP server?
Publish HTML for agents — one API call, MCP server included
What tools does htmldrop expose?
1 in total: 0 read-only, 1 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is htmldrop safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does htmldrop need?
It reads CLOUDFLARE_R2_ACCESS_KEY_ID, CLOUDFLARE_R2_SECRET_ACCESS_KEY, KEY_TTL_DAYS and RATE_LIMIT_KEY_PER_MINUTE from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does htmldrop run?
It speaks stdio and streamable-http, so it runs as a local process your client starts. It is published on npm as htmldrop-mcp at 0.1.0.
How current is this page?
The grade is for one exact copy of the source (7ac0dcce537a), read on 2026-10-10. The repository is watched and re-audited when it changes.