io.github.spruikco/send16-mcp

NPM · SEND16-MCP · 2 COMPONENTS · SCANNED AUG 3

Email for AI agents: send mail, manage contacts, automations & webhooks. Zero-DNS first send.

Available components

remote · mcp.send16.com 75 npm · send16-mcp 65

+19 this week 65 65 Trust /100

Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security86

No malware found by supply-chain analysis.Pass
Only part of the dependency tree could be resolved (94 of 98), so this covers what we could see, not the whole tree.Partial
No install/post-install scripts declared.Pass
Only part of the dependency tree could be resolved (94 of 98), so this covers what we could see, not the whole tree. View diagnostics → Partial

Provenance & Transparency45

Source repository is publicly reachable at the declared URL. View diagnostics → Pass
Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
Clear OSI-approved license (MIT).Pass
Actively maintained (last published 2 days ago).Pass
Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail

Schema Quality & AI Usability77

AI-judged instruction clarity (excellent).Pass
Tool/resource definitions use about 6299 tokens (~79/item across 79 items; 79 tools + 0 resources), lean.Pass
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 Coverage95

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
84% 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: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

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.

npm · send16-mcp

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add spruikco-send16-mcp -- npx -y send16-mcp

# add to Codex CLI

codex mcp add spruikco-send16-mcp -- npx -y send16-mcp

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "spruikco-send16-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "send16-mcp"
      ],
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add spruikco-send16-mcp --command npx --arg -y --arg send16-mcp

# ~/.hermes/config.yaml

mcp_servers:
  spruikco-send16-mcp:
    command: "npx"
    args: ["-y", "send16-mcp"]

// mcp.json

{
  "mcpServers": {
    "spruikco-send16-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "send16-mcp"
      ]
    }
  }
}

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.

2 Aug 26 +12
- Malware scan: unverified → pass ▲ security
1 Aug 26 +32
- Provenance: unverified → fail ▼ security
- Known CVEs: unverified → partial ▲ security
- Install scripts: unverified → pass ▲ security
- Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window). security
- Maintenance: unverified → pass ▲ functional
- Dependency health: unverified → partial ▲ functional
- License: unverified → pass ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Schema quality: unverified → excellent ▲ functional
- Licence: MIT functional
31 Jul 26 −7
- 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 −18
- Malware scan: pass → unverified ▼ security
27 Jul 26 46

First indexed and scored.

Show 2 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 · Analysed npm/[email protected]

Provenance none

Ecosystem: npm · Outcome: none

Dependencies 94 packages

94 packages in the resolved dependency tree · 94 deprecated · 29 stale.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 79 exposed · ~6,299 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

activate_automation ~54

Activate an automation. New events matching its triggers will start enrolling contacts.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
automationId	string	yes	Automation ID

No output schema declared.

No examples provided.

add_contacts_to_audience ~64

Add contacts (by ID) to an audience.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
audienceId	string	yes	Audience ID
contactIds	array	yes	Contact IDs to add

No output schema declared.

No examples provided.

add_convo_note ~70

Add a private internal note on a conversation. Notes are visible only to workspace members.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
body	string	yes	Note body (markdown supported)
convoId	string	yes	Conversation ID

No output schema declared.

No examples provided.

add_domain ~79

Register a new sending domain. Returns the DNS records the user must add to their DNS provider, after which they should call check_domain_health to verify.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
domain	string	yes	FQDN to register (e.g. 'mail.example.com')

No output schema declared.

No examples provided.

add_suppression ~69

Add an email to the suppression list. Future sends to this address will be blocked.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
email	string	yes	—
notes	string	—	—
reason	string	—	—

No output schema declared.

No examples provided.

check_domain_health ~75

Check the DNS health of a specific domain, including DKIM, SPF, DMARC, and MX record verification status. Triggers a fresh DNS lookup.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
domainId	string	yes	Domain ID to check health for

No output schema declared.

No examples provided.

create_action ~134

Create an Action that maps an event name to a transactional template. Each matching event sends one email to the contact.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
delaySeconds	integer	—	Delay before sending
enabled	boolean	—	—
eventName	string	yes	Event name to match (e.g. 'order.placed')
name	string	yes	Display name
sendOnce	boolean	—	Only send once per contact regardless of how many times the event fires
templateSlug	string	yes	Transactional template slug to send

No output schema declared.

No examples provided.

create_audience ~49

Create a new audience.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
description	string	—	—
name	string	yes	—

No output schema declared.

No examples provided.

create_campaign ~129

Create a new email campaign in Send16. The campaign is created in draft status and can be edited before sending.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
fromEmail	string	yes	Sender email (must be from a verified domain)
fromName	string	yes	Sender display name
name	string	yes	Campaign name (internal label)
previewText	string	—	Preview text shown in inbox alongside subject
replyTo	string	—	Reply-to email address
subject	string	yes	Email subject line

No output schema declared.

No examples provided.

create_contact ~106

Add a new contact to your Send16 audience. Contacts are automatically subscribed to receive emails.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
customFields	object	—	Custom field key-value pairs
email	string	yes	Contact email address
firstName	string	—	Contact first name
lastName	string	—	Contact last name
tags	array	—	Tag names to assign to this contact

No output schema declared.

No examples provided.

create_topic ~103

Create a new subscription topic. Contacts opt into topics individually via the preference center.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
description	string	—	Description shown in the preference center
isDefault	boolean	—	Auto-subscribe new contacts to this topic
name	string	yes	Display name shown to contacts
slug	string	—	URL-safe slug (auto-derived from name if omitted)

No output schema declared.

No examples provided.

create_webhook ~114

Register an outgoing webhook endpoint. Send16 POSTs event JSON to this URL with an HMAC-SHA256 signature. Outgoing webhooks are a plan feature.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
enabled	boolean	—	Whether the endpoint is active (default true)
events	array	yes	Event types to subscribe to
name	string	yes	A label for this endpoint
url	string	yes	HTTPS endpoint to receive events

No output schema declared.

No examples provided.

delete_action ~43

Delete an Action.

Input Output Examples

Name	Type	Req	Description
actionId	string	yes	Action ID
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

delete_audience ~60

Delete an audience (list). Contacts are not deleted — only the list and its memberships are removed.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
audienceId	string	yes	Audience ID

No output schema declared.

No examples provided.

delete_campaign ~53

Delete a draft campaign. Sent campaigns cannot be deleted (only archived).

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
campaignId	string	yes	Campaign ID

No output schema declared.

No examples provided.

delete_contact ~51

Delete a contact and all associated events. Irreversible.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
contactId	string	yes	Contact ID

No output schema declared.

No examples provided.

delete_topic ~50

Delete a subscription topic. All subscribers will be detached.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
topicId	string	yes	Topic ID

No output schema declared.

No examples provided.

delete_webhook ~47

Delete an outgoing webhook endpoint.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
webhookId	string	yes	Webhook ID

No output schema declared.

No examples provided.

design_email_template ~161

Use AI to generate a complete email HTML template based on a description. Returns ready-to-use HTML that can be sent or used in campaigns.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
brandColor	string	—	Primary brand color as hex code (e.g. "#4F46E5")
companyName	string	—	Company or brand name to include in the template
description	string	yes	Detailed description of the email content and purpose (e.g. 'Welcome email for a SaaS product with feature highlights and CTA to start trial')
style	string	yes	Visual style/aesthetic for the template
type	string	yes	Type of email template to generate

No output schema declared.

No examples provided.

duplicate_campaign ~60

Duplicate a campaign as a new draft. Useful for A/B variants or re-using a successful template.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
campaignId	string	yes	Campaign ID

No output schema declared.

No examples provided.

enroll_in_automation ~92

Manually enroll a contact in an active automation. The automation must be in 'active' status. Use send_event for event-driven enrollment.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
automationId	string	yes	Automation ID to enroll into
contactId	string	yes	Contact UUID (use search_contacts to look up by email first)

No output schema declared.

No examples provided.

generate_email_from_url ~104

Scrape a URL (e.g. a launch blog post or product page) and generate an email draft from its content. Returns subject, preview text, and HTML body.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
instructions	string	—	Additional guidance — e.g. 'announcement style, focus on the new feature'
url	string	yes	Public URL to scrape and turn into an email

No output schema declared.

No examples provided.

get_action ~51

Get a single Action with its trigger config and template binding.

Input Output Examples

Name	Type	Req	Description
actionId	string	yes	Action ID
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

get_automation ~57

Get a single automation by ID, including its trigger, steps, and current status.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
automationId	string	yes	Automation ID

No output schema declared.

No examples provided.

get_automation_stats ~63

Get aggregate analytics for an automation: total enrollments, completed, exited, open/click rates per step.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
automationId	string	yes	Automation ID

No output schema declared.

No examples provided.

get_brand ~53

Get the workspace's brand settings: colors, logo, fonts, and the DESIGN.md spec injected into AI generation prompts.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

get_campaign_stats ~66

Get detailed performance statistics for a specific campaign including open rate, click rate, bounce rate, and delivery metrics.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
campaignId	string	yes	Campaign ID to get stats for

No output schema declared.

No examples provided.

get_contact_health_score ~62

Get a contact's 0-100 health score based on recent engagement (opens, clicks, replies).

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
contactId	string	yes	Contact ID

No output schema declared.

No examples provided.

get_contact_timeline ~84

Get a contact's full activity timeline: emails received, events fired, opens, clicks, automation enrollments, topic changes.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
contactId	string	yes	Contact ID
cursor	string	—	Pagination cursor
limit	integer	—	Page size

No output schema declared.

No examples provided.

get_convo ~54

Get a single conversation with its full thread of posts (incoming + outgoing).

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
id	string	yes	Conversation ID

No output schema declared.

No examples provided.

get_deliverability_status ~62

Get your workspace's deliverability summary — sending reputation, domain authentication status, and recent bounce/complaint health. (Deliverability Hub plan feature.)

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

get_message ~60

Fetch a single message with its full event timeline (created → sent → delivered → opened → clicked → ...).

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
id	string	yes	Message ID

No output schema declared.

No examples provided.

get_message_events ~55

Get just the delivery event timeline for a message — no body or recipient details.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
id	string	yes	Message ID

No output schema declared.

No examples provided.

get_template ~55

Get a single starter template by ID, including its EmailContent JSON.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
templateId	string	yes	Template ID (slug)

No output schema declared.

No examples provided.

get_workspace ~42

Get the current workspace (the one the API key belongs to).

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

get_workspace_usage ~44

Get the current month's send count, contact count, and plan limits.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

import_contacts ~122

Bulk import contacts from CSV data. Each row should have at minimum an email column. Tags can be applied to all imported contacts.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
csvData	string	yes	CSV string with headers. Required column: "email". Optional: "firstName", "lastName", "tags" (comma-separated within quotes)
tags	array	—	Tag names to apply to all imported contacts
updateExisting	boolean	—	Whether to update contacts that already exist

No output schema declared.

No examples provided.

list_actions ~61

List Actions. Actions fire a transactional template when a custom event arrives — Plunk-style 'event_name → template' pairings, simpler than full automations.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

list_audiences ~48

List audiences (lists). An audience is a static, manually-managed group of contacts.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

list_automation_enrollments ~74

List active and historical enrollments for an automation.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
automationId	string	yes	Automation ID
cursor	string	—	—
limit	integer	—	—
state	string	—	—

No output schema declared.

No examples provided.

list_automations ~50

List all automations in the workspace, including draft/active/paused status and trigger types.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

list_campaigns ~75

List email campaigns with optional status filtering and pagination.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
page	integer	—	Page number
pageSize	integer	—	Results per page (max 100)
status	string	—	Filter campaigns by status

No output schema declared.

No examples provided.

list_contacts ~91

List all contacts with optional filtering by subscription status and tag. Supports pagination.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
page	integer	—	Page number
pageSize	integer	—	Results per page (max 100)
subscribed	string	—	Filter by subscription status
tagId	string	—	Filter by tag ID

No output schema declared.

No examples provided.

list_convos ~148

List inbox conversations. Filter by state, mailbox, label, screener status, or full-text search. Send16's unified inbox combines transactional reply threading with team-managed shared inboxes.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
label	string	—	Filter by label slug
limit	integer	—	Page size (default 50)
mailboxId	string	—	Filter to one mailbox
offset	integer	—	Page offset
screener_status	string	—	Screener gate status
search	string	—	Full-text search across subject + body
state	string	—	Conversation state

No output schema declared.

No examples provided.

list_domains ~48

List all sending domains configured in your Send16 workspace, including their verification status and DNS records.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

list_inbox_counts ~57

Get unread/total counts per category and label for the inbox sidebar (newsletter, transactional, marketing, calendar, social, cold).

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

list_messages ~153

List messages from the unified send log (transactional + campaign). Filter by recipient, sender, status, date range, or source.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
created_after	string	—	ISO-8601 timestamp lower bound
created_before	string	—	ISO-8601 timestamp upper bound
from_email	string	—	Sender email filter
limit	integer	—	Page size (default 50)
offset	integer	—	Page offset
source	string	—	Restrict to one message source
status	string	—	Delivery status filter
to_email	string	—	Recipient email filter

No output schema declared.

No examples provided.

list_segments ~46

List dynamic segments. Segments compute their members from a filter expression at send time.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

list_suppressions ~68

List suppressed email addresses (bounces, complaints, unsubscribes, manual).

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)
limit	integer	—	—
offset	integer	—	—
reason	string	—	—

No output schema declared.

No examples provided.

list_templates ~39

List starter-gallery email templates available to every workspace.

Input Output Examples

Name	Type	Req	Description
apiKey	string	—	Send16 API key (overrides SEND16_API_KEY env var)

No output schema declared.

No examples provided.

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Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

27 Jul 3 Aug