io.usefulapi/missive

REMOTE · MISSIVE.USEFULAPI.IO · SCANNED AUG 3

Read email/chat conversations, messages, contacts and teams; draft, send and update threads.

Available components

+4 this week 72 72 Trust /100

Trust breakdown (6 categories)

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 Security78

The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
HTTPS not yet verified: we couldn't determine whether a plaintext access path exists. View diagnostics → Unverified
HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial

Transport & Reachability100

Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass

Schema Quality & AI Usability71

AI-judged instruction clarity (good).Pass
Tool/resource definitions use about 1881 tokens (~99/item across 19 items; 19 tools + 0 resources), lean.Pass
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 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

Capabilities60

Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail

Install

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 · missive.usefulapi.io

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add --transport http io-usefulapi-missive https://missive.usefulapi.io/mcp

# ~/.codex/config.toml

[mcp_servers.io-usefulapi-missive]
url = "https://missive.usefulapi.io/mcp"

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-usefulapi-missive": {
      "type": "remote",
      "url": "https://missive.usefulapi.io/mcp",
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add io-usefulapi-missive --url https://missive.usefulapi.io/mcp --transport streamable-http

# ~/.hermes/config.yaml

mcp_servers:
  io-usefulapi-missive:
    url: "https://missive.usefulapi.io/mcp"

// mcp.json

{
  "mcpServers": {
    "io-usefulapi-missive": {
      "type": "http",
      "url": "https://missive.usefulapi.io/mcp"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

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.

3 Aug 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.
1 Aug 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 Jul 26 +3
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
30 Jul 26 −2
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
29 Jul 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.
28 Jul 26 0
- Stability: unverified → 0.03 ▲ functional
27 Jul 26 +56
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
26 Jul 26 12

First indexed and scored.

Show 7 earlier entries Hide earlier entries

Diagnostics

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 3 Aug 2026 · Probed https://missive.usefulapi.io/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject	Issuer	Valid from	Valid until	Key	Signature	Serial
CN=usefulapi.io	CN=WE1,O=Google Trust Services,C=US	19 Jul 2026	17 Oct 2026	ECDSA 256	ECDSA-SHA256	1a2963686eada6fe13a8cce6c71dacff
SANs: usefulapi.io, missive.usefulapi.io, *.missive.usefulapi.io
CN=WE1,O=Google Trust Services,C=US (CA)	CN=GTS Root R4,O=Google Trust Services LLC,C=US	13 Dec 2023	20 Feb 2029	ECDSA 256	ECDSA-SHA384	7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA)	CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE	15 Nov 2023	28 Jan 2028	ECDSA 384	SHA256-RSA	7fe530bf331343bedd821610493d8a1b

DNSSEC insecure

Validation of missive.usefulapi.io. — Not signed

Zone	DS	Keys	Algorithms	Outcome
.	trust_anchor	20326, 38696	8, 8	Verified
io.	present	57355	8	Verified
usefulapi.io.	absent			Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation

Authentication Enforced and verified

The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.

Result	Enforced and verified
Enforced	On tool calls
HTTP status	200

WWW-Authenticate challenge Bearer realm="OAuth", resource_metadata="https://missive.usefulapi.io/.well-known/oauth-protected-resource/mcp", error="invalid_token", error_description="Missing or invalid access token"

Bearer realm="OAuth", resource_metadata="https://missive.usefulapi.io/.well-known/oauth-protected-resource/mcp", error="invalid_token", error_description="Missing or invalid access token"

Protected resource metadata

Document	https://missive.usefulapi.io/.well-known/oauth-protected-resource/mcp
Retrieved	Yes
Resource	https://missive.usefulapi.io/mcp
Authorisation server	https://missive.usefulapi.io

Transports 2 probes

Transport	URL	Outcome	Status	Location
streamable-http	https://missive.usefulapi.io/mcp	Verified	200
http (plaintext)	http://missive.usefulapi.io/mcp	Inconclusive	401

MCP tools — 19 exposed · ~1,881 tokens

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.

Tool Tokens

missive_create_contact Create contact ~106

Create a contact in the given contact book. Missive: POST /contacts.

Input Output Examples

Name	Type	Req	Description
contact_book	string	yes	The contact book id to create the contact in (required).
first_name	string	—	First name.
infos	array	—	Contact info entries (email/phone/etc. objects).
last_name	string	—	Last name.
memberships	array	—	Group/organization membership objects.
starred	boolean	—	Whether the contact is starred.

No output schema declared.

No examples provided.

missive_create_draft Create draft ~241

Create a draft email/message. WARNING: setting send=true SENDS a real email immediately (send_at schedules it) instead of saving a draft. Attach to an existing thread with `conversation`. Missive: POST /drafts.

Input Output Examples

Name	Type	Req	Description
add_assignees	array	—	User ids to assign to the conversation.
add_shared_labels	array	—	Shared label ids to apply.
bcc_fields	array	—	Bcc recipients.
body	string	yes	The message body (HTML) — required.
cc_fields	array	—	Cc recipients.
conversation	string	—	Attach the draft to an existing conversation id.
from_field	object	—	The sender ({address, name?}).
organization	string	—	Organization id to send from.
references	array	—	Message-ID references (for threading).
send	boolean	—	If true, SEND the email immediately instead of saving a draft.
send_at	number	—	Unix timestamp to schedule the send.
subject	string	—	The subject line.
to_fields	array	—	Recipients ({address, name?}).

No output schema declared.

No examples provided.

missive_get_contact Get contact ~41

Get a single contact by id. Missive: GET /contacts/{id}.

Input Output Examples

Name	Type	Req	Description
id	string	yes	The resource id (a UUID-like string).

No output schema declared.

No examples provided.

missive_get_conversation Get conversation ~43

Get a single conversation by id. Missive: GET /conversations/{id}.

Input Output Examples

Name	Type	Req	Description
id	string	yes	The resource id (a UUID-like string).

No output schema declared.

No examples provided.

missive_get_message Get message ~60

Get a single message, including the full body. Missive: GET /conversations/{conversation_id}/messages/{id}.

Input Output Examples

Name	Type	Req	Description
conversation_id	string	yes	The conversation id the message belongs to.
id	string	yes	The message id.

No output schema declared.

No examples provided.

missive_list_contact_books List contact books ~61

List contact books (address books). Missive: GET /contact_books.

Input Output Examples

Name	Type	Req	Description
limit	integer	—	Max contact books to return (default 50, max 200).
offset	integer	—	Number of records to skip (offset pagination).

No output schema declared.

No examples provided.

missive_list_contact_groups List contact groups ~87

List contact groups or organizations within a contact book. Missive: GET /contact_groups.

Input Output Examples

Name	Type	Req	Description
contact_book	string	yes	The contact book id (required).
kind	string	yes	Which kind to list: "group" or "organization".
limit	integer	—	Max records to return.
offset	integer	—	Number of records to skip (offset pagination).

No output schema declared.

No examples provided.

missive_list_contacts List contacts ~128

List contacts in a contact book. Missive: GET /contacts.

Input Output Examples

Name	Type	Req	Description
contact_book	string	yes	The contact book id to list contacts from (required).
include_deleted	boolean	—	Include deleted contacts.
limit	integer	—	Max contacts to return (default 50, max 200).
modified_since	number	—	Unix timestamp — only contacts modified since.
offset	integer	—	Number of records to skip (offset pagination).
order	string	—	Sort order (default "last_name").
search	string	—	Free-text search over contacts.

No output schema declared.

No examples provided.

missive_list_conversation_comments List conversation comments ~81

List internal comments (team chat) on a conversation. Missive: GET /conversations/{id}/comments.

Input Output Examples

Name	Type	Req	Description
id	string	yes	The resource id (a UUID-like string).
limit	integer	—	Max records to return.
until	number	—	Unix timestamp cursor — return records older than this (offset-less pagination).

No output schema declared.

No examples provided.

missive_list_conversation_drafts List conversation drafts ~79

List draft messages on a conversation. Missive: GET /conversations/{id}/drafts.

Input Output Examples

Name	Type	Req	Description
id	string	yes	The resource id (a UUID-like string).
limit	integer	—	Max records to return.
until	number	—	Unix timestamp cursor — return records older than this (offset-less pagination).

No output schema declared.

No examples provided.

missive_list_conversation_messages List conversation messages ~88

List the messages (emails) in a conversation. Missive: GET /conversations/{id}/messages.

Input Output Examples

Name	Type	Req	Description
id	string	yes	The resource id (a UUID-like string).
limit	integer	—	Max messages to return (default 10, max 10).
until	number	—	Unix timestamp cursor — return records older than this (offset-less pagination).

No output schema declared.

No examples provided.

missive_list_conversation_posts List conversation posts ~82

List posts (integration/app-generated items) on a conversation. Missive: GET /conversations/{id}/posts.

Input Output Examples

Name	Type	Req	Description
id	string	yes	The resource id (a UUID-like string).
limit	integer	—	Max records to return.
until	number	—	Unix timestamp cursor — return records older than this (offset-less pagination).

No output schema declared.

No examples provided.

missive_list_conversations List conversations ~268

List conversations (email/chat threads). Missive requires EXACTLY ONE mailbox-type filter — one of inbox / assigned / closed / flagged / snoozed / trashed / all / shared_label / team_inbox / team_all / organization. Missive: GET /conversations.

Input Output Examples

Name	Type	Req	Description
all	boolean	—	All conversations.
assigned	boolean	—	Conversations assigned to you.
closed	boolean	—	Closed conversations.
contact_organization	string	—	Filter to a contact organization id.
email	string	—	Filter to conversations involving this email address.
flagged	boolean	—	Flagged conversations.
inbox	boolean	—	Conversations in your inbox.
limit	integer	—	Max conversations to return (default 25, max 50).
organization	string	—	Filter to an organization id.
shared_label	string	—	Conversations under a shared label id.
snoozed	boolean	—	Snoozed conversations.
team_all	string	—	All of a team's conversations (team id).
team_inbox	string	—	Conversations in a team's inbox (team id).
trashed	boolean	—	Trashed conversations.
until	number	—	Unix timestamp cursor — return records older than this (offset-less pagination).

No output schema declared.

No examples provided.

missive_list_organizations List organizations ~50

List organizations you belong to. Missive: GET /organizations.

Input Output Examples

Name	Type	Req	Description
limit	integer	—	Max records to return.
offset	integer	—	Number of records to skip (offset pagination).

No output schema declared.

No examples provided.

missive_list_responses List responses ~62

List canned responses / templates. Missive: GET /responses.

Input Output Examples

Name	Type	Req	Description
limit	integer	—	Max records to return.
offset	integer	—	Number of records to skip (offset pagination).
organization	string	—	Filter to an organization id.

No output schema declared.

No examples provided.

missive_list_shared_labels List shared labels ~68

List shared labels (team-shared folders/tags). Missive: GET /shared_labels.

Input Output Examples

Name	Type	Req	Description
limit	integer	—	Max records to return.
offset	integer	—	Number of records to skip (offset pagination).
organization	string	—	Filter to an organization id.

No output schema declared.

No examples provided.

missive_list_teams List teams ~63

List teams in the organization(s). Missive: GET /teams.

Input Output Examples

Name	Type	Req	Description
limit	integer	—	Max records to return.
offset	integer	—	Number of records to skip (offset pagination).
organization	string	—	Filter to an organization id.

No output schema declared.

No examples provided.

missive_list_users List users ~61

List users (team members). Missive: GET /users.

Input Output Examples

Name	Type	Req	Description
limit	integer	—	Max records to return.
offset	integer	—	Number of records to skip (offset pagination).
organization	string	—	Filter to an organization id.

No output schema declared.

No examples provided.

missive_update_conversation Update conversation ~212

Update a conversation — assign/unassign users, add/remove shared labels, close/reopen, move to inbox, or set subject/color/team. Missive: PATCH /conversations/{id}.

Input Output Examples

Name	Type	Req	Description
add_assignees	array	—	User ids to assign.
add_shared_labels	array	—	Shared label ids to add.
add_to_inbox	boolean	—	Move the conversation back to the inbox.
close	boolean	—	Close (archive) the conversation.
color	string	—	Set the conversation color.
id	string	yes	The resource id (a UUID-like string).
organization	string	—	Organization id (context for the update).
remove_assignees	array	—	User ids to unassign.
remove_shared_labels	array	—	Shared label ids to remove.
reopen	boolean	—	Reopen the conversation.
subject	string	—	Set the conversation subject.
team	string	—	Team id to move the conversation to.

No output schema declared.

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

26 Jul 3 Aug

Day	Score
26 Jul	12
27 Jul	68
28 Jul	68
29 Jul	69
30 Jul	67
31 Jul	70
1 Aug	71
2 Aug	71
3 Aug	72