com.83blue.upload/transfer
REMOTE · UPLOAD.83BLUE.COM · SCANNED AUG 8
Free no-signup file transfer between AI agents. Share files or whole conversation handoffs by url.
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 →
Endpoint Security51
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- 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. See how to fix → View diagnostics → Unverified
- HTTPS not yet verified: we couldn't determine whether a plaintext access path exists. View diagnostics → Unverified
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability65
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 883 tokens (~220/item across 4 items; 4 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 Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage98
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 94% of tool parameters carry a description.Partial
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Unverified: 1 category
A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
remote · upload.83blue.com
claude mcp add --transport http com-83blue-upload-transfer https://upload.83blue.com/mcp
[mcp_servers.com-83blue-upload-transfer] url = "https://upload.83blue.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-83blue-upload-transfer": {
"type": "remote",
"url": "https://upload.83blue.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-83blue-upload-transfer --url https://upload.83blue.com/mcp --transport streamable-http
mcp_servers:
com-83blue-upload-transfer:
url: "https://upload.83blue.com/mcp" {
"mcpServers": {
"com-83blue-upload-transfer": {
"type": "http",
"url": "https://upload.83blue.com/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.
- 8 Aug 26 58
First indexed and scored.
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 8 Aug 2026 · Probed https://upload.83blue.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_256_GCM_SHA384 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=upload.83blue.com | CN=YR1,O=Let's Encrypt,C=US | 9 Jul 2026 | 7 Oct 2026 | RSA 2048 | SHA256-RSA | 561d1a5e982dc1208a16eb7fdefe79f4f2c |
| SANs: upload.83blue.com | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
DNSSEC insecure
Validation of upload.83blue.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| 83blue.com. | 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 | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000 |
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://upload.83blue.com/mcp | Verified | 200 | |
| http (plaintext) | http://upload.83blue.com/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.
receive_file Receive a file another agent shared ~178
Use this when you have been given an 83blue transfer link and need the file. Accepts a capability url (https://upload.83blue.com/f/...) on its own, or a share url plus password. Returns metadata including sha256, the file list for zip bundles, and the content inline when it is text within max_inline_bytes; otherwise returns a ready-made curl command to save the file locally.
| Name | Type | Req | Description |
|---|---|---|---|
| max_inline_bytes | integer | – | Inline text content up to this many bytes (max 1000000) |
| password | string | – | Needed for share urls and bare tokens; not needed for capability urls |
| url_or_token | string | yes | Capability url (https://upload.83blue.com/f/TOKEN/KEY), share url (https://upload.83blue.com/d/TOKEN), or the bare token |
No output schema declared.
No examples provided.
share_conversation Hand a whole conversation to another model ~226
Use this to hand your full working context to another AI: any provider, any model, any chat client. Packages a markdown transcript (instructions, conversation summary, task state) as HANDOFF.md at the root of a zip bundle together with any files, and returns a single handoff url. The receiving model just fetches that url: it gets a briefing, the file manifest and download commands in one go. Say to the next agent: "Fetch this url to pick up where I left off."
| Name | Type | Req | Description |
|---|---|---|---|
| expires_days | integer | – | Days until the file is deleted (1-180, default 30) |
| files | array | – | Optional files the next agent needs alongside the transcript |
| password | string | – | Optional custom password (8-64 chars); a strong one is generated when omitted |
| title | string | – | Short name for the bundle, e.g. "auth refactor handoff" |
| transcript | string | yes | Markdown briefing for the next agent: context, instructions, conversation summary, task state. Becomes HANDOFF.md at the bundle root. |
No output schema declared.
No examples provided.
share_file Share one or more files with another agent ~176
Use this when another AI agent (a different machine, model or chat session) or a person needs access to one or more files. Accepts text or base64-encoded binary content; multiple files are zipped into one bundle server-side, so a whole handoff (instructions plus code plus data) travels as one capability url. For large files already on local disk, prefer the HTTP API (one curl command, up to 1 TB): https://upload.83blue.com/docs
| Name | Type | Req | Description |
|---|---|---|---|
| bundle_name | string | – | Zip name used when more than one file is sent |
| expires_days | integer | – | Days until the file is deleted (1-180, default 30) |
| files | array | yes | – |
| password | string | – | Optional custom password (8-64 chars); a strong one is generated when omitted |
No output schema declared.
No examples provided.
share_text Share text with another agent or person ~143
Use this when another AI agent, chat session or person needs text you have: instructions, code, JSON, a prompt for another model. Uploads it as a downloadable file and returns a capability url (one GET fetches it) plus a share url and password. No account or API key needed.
| Name | Type | Req | Description |
|---|---|---|---|
| content | string | yes | The text to share |
| expires_days | integer | – | Days until the file is deleted (1-180, default 30) |
| filename | string | – | File name for the download, e.g. instructions.md |
| password | string | – | Optional custom password (8-64 chars); a strong one is generated when omitted |
No output schema declared.
No examples provided.