Atlas entry

`humanmailbox.com`

34 capabilities over ARD, MCP and WebMCP. The inventory is incomplete. First atlas observation.

Observed 3 Nov 2026, 11:23 UTC · passive: no tools called, no credentials sent · sha256:be16dd…7f00

Capability facts

As observed from outside, at the time below

Observed: 3 Nov 2026, 11:23 UTC
Signed: 3 Nov 2026, 18:09 UTC

Protocols: ARD, MCP, MCP server card, WebMCP
Tools: 34
Declared sign-in: None declared

Effects counted AI readings, beta

Moves money: 6
Deletes or cancels records: 1
Sends messages to people: 1
Changes permissions: 0
Runs code: 0
Asks a person: 0

32 tools examined; 26 counted above a measured threshold.

Declared vs read disagreements

Declared read-only, read as writing: 0
Declared destructive, read as not writing: 0
Declared non-destructive, read as deleting: 0
Declared closed-world, read as reaching out: 0

Change since previous: First observation
Label status: Current

Surfaces

5 protocols checked

ARD	Valid	1 retrieved artifact
A2A	invalid	0 skills
MCP	Valid	2025-11-25 · 32 tools · resources not advertised · prompts not advertised
OpenAPI	Not detected	0 operations
WebMCP	Observed	2 declarative form tools · experimental

Exact states and meaning

ARD
observed
Exact state: valid · 1 retrieved artifact
A usable protocol document was retrieved and validated.
Directly observed
A2A
failed
Exact state: invalid · 0 skills
InterfaceDelta retained the machine state “invalid” without assigning an additional meaning.
Not observed / not fetched
MCP
observed
Exact state: valid · Revision 2025-11-25 · 32 tools · resources not advertised · prompts not advertised
A usable protocol document was retrieved and validated.
Directly observed
OpenAPI
absent
Exact state: not detected · 0 operations
No endpoint was established from the evidence and scope that InterfaceDelta inspected.
Not detected does not prove that no endpoint exists.
Not observed / not fetched
WebMCP
observed
Exact state: observed · 2 declarative form tools · experimental
The origin root HTML, or a monitor’s watched page, declared WebMCP form tools. InterfaceDelta ran no scripts and submitted no forms.
A declaration does not prove the tool works. WebMCP is an experimental browser capability.
Publisher declared

Capabilities

34 · inventory incomplete

Summary of the AI readings · beta

The service lists 32 capabilities, and 27 have AI readings.

6 capabilities are read as moving money, including accept_quote, reveal_codes and buy_bundle.

cancel_request is read as deleting or cancelling records.

send_message is read as sending messages to people.

Rows named: accept_quote · reveal_codes · buy_bundle · cancel_request · send_message

Written by code from the AI readings on this page: it groups them and says nothing they do not.

The atlas shows each capability by its plain identifier, inputs and declared sign-in. Publisher descriptions, paths, links and source evidence are not published here.

A2A skills 0+ observed

Inventory incomplete. The displayed count is a lower bound; missing items do not prove removal.

None recorded in this Passport.

MCP tools 32

accept_quote
inputs api_key, id (required)
AI Moves money 0.90
announce_shipment
inputs api_key, carrier, description, expected_at and 4 more
buy_bundle
inputs api_key, bundle (required)
AI Moves money 0.87
cancel_request
inputs api_key, id (required)
AI Deletes or cancels records 0.82
check_inquiry
inputs api_key, id (required), ticket
AI Reads only 0.85
check_top_up
inputs api_key, id (required)
AI Reads only 0.85
contact_human
inputs api_key, body (required), budget_eur, deadline and 6 more
express_interest
inputs country_wanted, email, found_via, kind and 2 more
get_account
inputs api_key
AI Reads only 0.82
get_address
inputs api_key, style
AI Reads only 0.85
get_balance
inputs api_key
AI Reads only 0.90
get_item
inputs api_key, id (required)
AI Reads only 0.87
get_prices
AI Reads only 0.86
get_request
inputs api_key, id (required)
AI Reads only 0.90
get_subscription
inputs api_key
AI Reads only 0.80
get_summary
inputs api_key
AI Reads only 0.86
list_codes
inputs api_key
AI Reads only 0.84
list_invoices
inputs api_key
AI Reads only 0.85
list_items
inputs api_key, status
AI Reads only 0.87
list_messages
inputs api_key
AI Reads only 0.85
list_requests
inputs api_key, status
AI Reads only 0.86
list_shipments
inputs api_key, status
AI Reads only 0.87
pay_item
inputs api_key, id (required)
AI Moves money 0.85
pay_subscription
inputs api_key, months
AI Moves money 0.90
register_mailbox
inputs accept_terms (required), address_name, agent_model, agent_name (required) and 8 more
AI Creates records 0.86
request_action
inputs action (required), address, api_key, carrier and 19 more
request_invoice
inputs api_key, billing, email, payment_ids
reveal_codes
inputs api_key, ids
AI Moves money 0.80
send_message
inputs api_key, body (required), item_id, request_id and 1 more
AI Sends messages to people 0.89
start_demo
inputs agent_model, agent_name, found_via
AI Creates records 0.85
top_up
inputs amount_eur, api_key, bundle, method (required)
AI Moves money 0.84
update_account
inputs address_name, api_key, auto_reveal_codes, budget_eur_month and 5 more
AI Changes records 0.84

Not observed in this Passport: MCP resources, MCP prompts, OpenAPI operations.

Declared and observed

18 tools declare hints; the AI readings agree with all 17 that have a reading.

A disagreement is not a finding about the service: either side can be wrong. How we compare declarations and readings.

Atlas history

1 observation

3 Nov 2026, 11:23 UTC34 capabilities · ARD, MCP 2025-11-25, MCP Server Card and WebMCP · MCP endpoint validFirst observation
Fingerprint and versions
Fingerprint
be16dd10f98101c9bc7bd6f7dc3d17c773fee335702e2d41a04714a18a587f00
Passport schema
0.5.0, passport-semantic-v4
Consistency
ARD_DECLARED_A2A_ARTIFACT: mismatch · ARD_DECLARED_MCP_SERVER_CARD: match · MCP_PROMPTS_ADVERTISEMENT_LIST: not applicable · MCP_RESOURCES_ADVERTISEMENT_LIST: not applicable · MCP_SERVER_CARD_REMOTE_OBSERVED: indeterminate · MCP_TOOLS_ADVERTISEMENT_LIST: match · OPENAPI_MCP_EXPLICIT_MAPPING: not applicable

Each class compares an observation with the previous atlas observation. Runs of unchanged observations are grouped. Struck values are what the previous observation recorded; inserted values are what this one recorded.

About this entry

com.humanmailbox/mailbox
Listed
Official MCP Registry · first listed 3 Nov 2026 · last listed 3 Nov 2026

Passive observations of a public interface listed in the Official MCP Registry. An observation does not verify security, ownership or compliance, and InterfaceDelta assigns no scores or rankings. Methodology · Report an inaccuracy · Ask for removal

Identity and snapshot

Target key: sha256:600cba783d5e902960927d75b4e11496e633d9360d50233f96748b4bd88037c8
Locator SHA-256: cea342d6bc85a360f5cc54e3d20559c906044d734c8d6ba719a622d2b03a4599
Snapshot generated: 4 Nov 2026, 00:59 UTC

The entry is one exact observed target, not a real-world service identity, and implies no ownership. Endpoint paths are not published; the locator hash lets an operator confirm their own URL.