Handoff: Send Files to Users & Agents
REMOTE · HAND-OFF.SPACE
Send a file to a user or agent as a share link with expiry, max opens, approval, revoke and logs.
Available components
Last scanned (5 hours ago)
Scores higher than 54% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Documents and Files
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
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (deny_share). See how to fix → View diagnostics → Fail
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- 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 Usability69
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 2298 tokens (~164/item across 14 items; 14 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 Management23
- Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage99
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 96% of tool parameters carry a description.Partial
- Structured output schemas are declared (36% 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
- All 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 15 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.
- 5 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 3 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 29 Oct 26 66
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 5 Nov 2026 · Probed https://hand-off.space/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=hand-off.space | CN=YE2,O=Let's Encrypt,C=US | 29 Oct 2026 | 27 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 6958ef3fb2dad7d2e9b9fdfaf4bf6ff2444 |
| SANs: hand-off.space | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of hand-off.space. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| space. | present | 51168 | 13 | Verified |
| hand-off.space. | 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=63072000; includeSubDomains |
| 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://hand-off.space/mcp | Verified | 200 | |
| http (plaintext) | http://hand-off.space/mcp | HTTPS enforced | 301 | https://hand-off.space:443/mcp |
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 →
approve_share Approve a share ~104
Approve an owned grant that was created with requires_approval. Opens stay blocked until this succeeds. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| grant_id | string | yes | grant_id returned when the share was created. |
No output schema declared.
No examples provided.
create_share_link Create a share link ~274
Create a controlled download link for a file you own. Use this when a person or another agent should fetch the file. The response includes url and token ONCE, plus expires_at and max_opens. Save the url immediately. Later status calls do not return it. When expires_in_hours is omitted, the link expires in 7 days. Download with GET on that url. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| audience | string | yes | anyone_with_link: whoever has the saved url. agent: only the registered agent_id in audience_value. |
| audience_value | string | – | Required for agent: the recipient's registered agent_id. Example: their-agent |
| expires_in_hours | number | – | Hours until the link expires. Default 168 (7 days) when omitted. |
| file_id | string | yes | File id returned by save_file or list_files. |
| max_opens | integer | – | Successful downloads allowed. The next one is refused. |
| requires_approval | boolean | – | When true, downloads wait until the owner approves the grant. |
| Name | Type | Req | Description |
|---|---|---|---|
| expires_at | string | yes | – |
| grant_id | string | yes | – |
| max_opens | – | yes | – |
| token | string | yes | – |
| token_prefix | string | yes | – |
| url | string | yes | – |
No examples provided.
delete_file Delete a file ~106
Delete a file you own. The bytes are removed and existing share links stop working. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| file_id | string | yes | File id returned by save_file, list_files, or share_file. |
| Name | Type | Req | Description |
|---|---|---|---|
| deleted | boolean | yes | – |
| file_id | string | yes | – |
No examples provided.
deny_share Deny a share ~95
Deny an owned grant. A denied grant stays blocked. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| grant_id | string | yes | grant_id of the share to deny. |
No output schema declared.
No examples provided.
fetch_shared_file Fetch a shared file ~200
Download a file from a share url or token. Use this when you were given a Handoff url and need the bytes. Honors expiry, open limits, approval, and agent audience. anyone_with_link needs no key. An agent audience uses your API key. Files up to 1048576 bytes return content_base64, plus content_text when the file is text. Larger files are not inlined: the error includes the byte size and tells you to GET the url. A successful inline return counts as an open. A file over the inline limit does not.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| url_or_token | string | yes | Share url returned by create_share_link, or the 64-character token. |
No output schema declared.
No examples provided.
get_access_log Get access log ~111
Read the latest 1000 access attempts for an owned grant, including refused downloads. Use this to see whether a share was opened. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| grant_id | string | yes | grant_id of the share to audit. |
No output schema declared.
No examples provided.
get_share_status Get share status ~123
Read an owned grant: token_prefix (not the secret), audience, approval, expiry, revocation, and open_count. Does not download the file and does not return the share URL. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| grant_id | string | yes | grant_id returned when the share was created. |
No output schema declared.
No examples provided.
list_files List files ~103
List this account's files, newest first, up to 1000. Use this to find a file_id before sharing. Returns metadata only, never bytes or download URLs. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
No output schema declared.
No examples provided.
list_shares List shares ~133
List grants you own. Pass file_id to limit the list to one file. Returns grant_id, status, open_count, max_opens, expires_at, and audience. Does not return tokens or download urls. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| file_id | string | – | Optional file id. Omit to list every grant on this account. |
No output schema declared.
No examples provided.
revoke_share Revoke a share ~105
Permanently revoke an owned share. Later downloads fail. This cannot be undone and does not delete the file. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| grant_id | string | yes | grant_id of the share to revoke. |
No output schema declared.
No examples provided.
save_file Save a file ~191
Save a private file for this account. Pass name and content_text or content_base64. Returns the file id and metadata. Does not share the file. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| content_base64 | string | – | Standard or url-safe base64. A data:*;base64, prefix is stripped. Example: aGk= |
| content_text | string | – | UTF-8 text. Pass exactly one of content_text or content_base64. |
| mime | string | – | MIME type. Inferred from the file name when omitted. |
| name | string | yes | File name with an extension. No slashes or control characters. |
No output schema declared.
No examples provided.
share_file Share a file ~343
Share a file in one call and get a download link. Pass name and content_text (or content_base64). Works without an API key: if none is sent, a new account is created and its api_key is returned once; save it to revoke the link or read the access log later. Default link: anyone with the link, expires in 7 days.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| audience | string | – | Default anyone_with_link. |
| audience_value | string | – | Required when audience is agent. |
| content_base64 | string | – | Standard or url-safe base64. A data:*;base64, prefix is stripped. Example: aGk= |
| content_text | string | – | UTF-8 text. Pass exactly one of content_text or content_base64. |
| expires_in_hours | number | – | Hours until the link expires. Default 168 (7 days). |
| max_opens | integer | – | Successful downloads allowed. Omit for no limit. |
| mime | string | – | MIME type. Inferred from the file name when omitted. |
| name | string | yes | File name with an extension. No slashes or control characters. |
| ref | string | – | Optional attribution label. Lowercase letters, digits, dot, underscore, or hyphen. At most 64 characters. |
| requires_approval | boolean | – | Default false. When true, downloads wait until the owner approves. |
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | – |
| expires_at | string | yes | – |
| file_id | string | yes | – |
| grant_id | string | yes | – |
| max_opens | – | yes | – |
| next | – | yes | – |
| requires_approval | boolean | yes | – |
| token_prefix | string | yes | – |
| url | string | yes | – |
No examples provided.
signup Create an account ~145
Create a Handoff account and return an API key once. No Authorization header is required. Save api_key. On later calls send Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass api_key only if you cannot set headers. share_file can create this key for you. The key is a secret. Do not put it in a file you share.
| Name | Type | Req | Description |
|---|---|---|---|
| agent_id | string | – | Optional label, unique across Handoff. Letters, numbers, underscore, and hyphen. |
| ref | string | – | Optional attribution label. Lowercase letters, digits, dot, underscore, or hyphen. At most 64 characters. |
| Name | Type | Req | Description |
|---|---|---|---|
| account_id | string | yes | – |
| agent_id | string | yes | – |
| api_key | string | yes | – |
| caps | object | yes | – |
| next | object | yes | – |
No examples provided.
update_share Update share expiry ~115
Set when an owned share expires. expires_in_hours is measured from now. Example: 168 for 7 days. Does not return the token. Requires your API key.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Secret API key from signup. Prefer Authorization: Bearer <api_key>, the bare key in Authorization, or X-Handoff-Api-Key. Pass this only when you cannot set headers. Do not write it into a file you sh… |
| expires_in_hours | number | yes | – |
| grant_id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| audience | string | yes | – |
| expires_at | string|null | yes | – |
| file_id | string | yes | – |
| grant_id | string | yes | – |
| max_opens | number|null | yes | – |
| open_count | number | yes | – |
| status | string | yes | – |
No examples provided.
How do I install the Handoff: Send Files to Users & Agents MCP server?
Handoff: Send Files to Users & Agents is a hosted endpoint at https://hand-off.space/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 · hand-off.space
claude mcp add --transport http jueluddinsf-handoff 'https://hand-off.space/mcp'
What is the Handoff: Send Files to Users & Agents MCP server?
Handoff: Send Files to Users & Agents is an MCP server listed in the public MCP registry as io.github.jueluddinsf/handoff. Send a file to a user or agent as a share link with expiry, max opens, approval, revoke and logs. This page covers its hosted endpoint (https://hand-off.space/mcp).
Is the Handoff: Send Files to Users & Agents MCP server safe to use?
Handoff: Send Files to Users & Agents scores 69 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 Handoff: Send Files to Users & Agents MCP server expose?
Handoff: Send Files to Users & Agents exposes 14 tools: share_file, signup, save_file, list_files, create_share_link, and 9 more. Their descriptions and schemas cost roughly 2,148 tokens of context every time the server is loaded.
Does the Handoff: Send Files to Users & Agents MCP server require authentication?
No. We connected to Handoff: Send Files to Users & Agents without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Handoff: Send Files to Users & Agents MCP server still maintained?
Handoff: Send Files to Users & Agents 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.