Nitrosend
com.nitrosend/nitrosend
20 toolsSTDIO, HTTPregistry active
Summary
Connects your AI assistant directly to Nitrosend's email marketing platform over MCP. You get tools to manage campaigns, set up automations, send transactional emails, handle contacts, and pull analytics without leaving your chat interface. Supports both API key auth and OAuth 2.1 with PKCE, runs over streamable HTTP, and works across Claude Desktop, Cursor, Windsurf, and other MCP clients. Reach for this when you want to draft campaign content, query subscriber data, or trigger email sequences as part of a larger workflow. If you're already using Nitrosend and want your LLM to read and write to your email operations, this is the integration.
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Tools
Public tool metadata for what this MCP can expose to an agent.
20 tools
nitro_get_statusGet current account health, onboarding status, and recommendations.
Get current account health, onboarding status, and recommendations.
No parameter schema in public metadata yet.
nitro_queryQuery any Nitrosend entity. Returns paginated results.4 params
Query any Nitrosend entity. Returns paginated results.
Parameters* required
perintegerResults per page (max 50, default 25)
pageintegerPage number (default 1)
entitystringWhich entity type to query. Use nitro_search_contacts for full-text contact search.one of
flows · campaigns · templates · segments · contacts · listsfiltersobjectEntity-specific filters. All entities support id (integer) to fetch a single record.
flows: status (draft/active/paused/archived), campaign_id (integer|null), trigger_event (string), search (string)
campaigns: status (draft/active/paused/completed), search (string)
templates: subject (string, ILIKE match on subject line)
segments: name (string, ILIKE match)
contacts: query (string, full-text search), subscribed_email (boolean), subscribed_phone (boolean), list_id (integer)
lists: name (string, ILIKE match)
events: name (string, exact event type), from (ISO 8601 datetime), to (ISO 8601 datetime)
imports: status (pending/processing/completed/failed)
messages: channel (email/sms), status (queued/sent/failed), to (string, recipient address)
nitro_search_contactsSearch contacts by email, name, or phone. Returns summary list or full profile.4 params
Search contacts by email, name, or phone. Returns summary list or full profile.
Parameters* required
perintegerResults per page (max 50, default 25)
modestringsummary = list, profile = single contact detail (default: summary)one of
summary · profilepageintegerPage number (default 1)
querystringEmail address, name, or phone number
nitro_set_brandSet up brand identity from website URL or direct fields. Provide url to auto-scrape brand colors/fonts, or fields to set values directly, or both (fields override scraped values). Sync mode (default) returns results immediately — best when you need brand data now for composing...7 params
Set up brand identity from website URL or direct fields. Provide url to auto-scrape brand colors/fonts, or fields to set values directly, or both (fields override scraped values). Sync mode (default) returns results immediately — best when you need brand data now for composing...
Parameters* required
urlstringWebsite URL to scrape brand from
modestringsync (default) or async for URL scrapingone of
sync · asyncdefault: syncfieldsobjectDirect brand field updates
dry_runbooleanPreview changes without persistingdefault: false
documentstringFull brand voice markdown document
logo_urlstringDirect URL to a logo image (png/jpg/webp) to attach
idempotency_keystringOptional dedup key
nitro_manage_audienceCreate contacts, manage subscriptions, lists, events, segments, and tags.5 params
Create contacts, manage subscriptions, lists, events, segments, and tags.
Parameters* required
paramsobjectOperation-specific parameters. See operation description for required/optional fields.
confirmbooleanRequired for destructive operations: delete_segment, manage_list with action='delete'default: false
dry_runbooleanPreview changes without persisting (default: false)default: false
operationstringWhich audience operation to perform. Each operation expects specific params:
create_contact — params: {email (string), phone (string), opt_in (boolean, recommended: true), attributes: {first_name, last_name, country_code, source}}
set_subscription — params: {contact_id (required), kind: "email"|"phone" (required), opt_in (boolean), opt_out (boolean), unsubscribe_all (boolean)}. Value auto-resolved from contact.
manage_list — params: {action: "create"|"rename"|"delete"|"add_contacts"|"remove_contacts" (required), list_id (integer), name (string), contact_ids (integer[]) or emails (string[])}
record_event — params: {contact_id or contact_email (one required), event (required, custom names allowed e.g. order_confirmed), data (object, max 32KB), resource_uid, resource_name, resource_url, amount}
delete_segment — params: {segment_id (required), force (boolean)}. Requires confirm: true.
bulk_tag — params: {contact_ids (integer[], required), tags (string[], required), tag_action: "add"|"remove"|"set" (default: "add")}one of
create_contact · set_subscription · manage_list · record_event · delete_segment · bulk_tagidempotency_keystringOptional deduplication key. Same key returns cached result.
nitro_define_segmentDefine a contact segment with explicit filters and preview. Defaults to preview_only: true (dry preview without saving). Set preview_only: false and provide a name to persist.5 params
Define a contact segment with explicit filters and preview. Defaults to preview_only: true (dry preview without saving). Set preview_only: false and provide a name to persist.
Parameters* required
namestringSegment name (required when preview_only: false)
filtersarrayArray of filter objects. Each filter has:
- name: filter alias from flows.yml (e.g. "contact_email", "contact_first_name", "contact_country", "contact_subscribed_email", "contact_created_at", "contact_tag")
- predicate: Ransack predicate — eq, not_eq, cont, not_cont, start, end, gt, lt, gteq, lteq, present, blank, true, false, in, not_in
- value: filter value (string, number, boolean, or array for in/not_in). For present/blank/true/false predicates, pass true.
segment_idintegerExisting segment ID to update (omit for new segment)
preview_onlybooleanOnly preview matching contacts, do not save (default: true). Set to false + provide name to persist.default: true
idempotency_keystringOptional deduplication key
nitro_import_contactsImport contacts from inline records (< 100) or reference a pre-uploaded CSV import. Email contacts are auto-subscribed by default. For SMS-only contacts, set opt_in: true explicitly (TCPA compliance).4 params
Import contacts from inline records (< 100) or reference a pre-uploaded CSV import. Email contacts are auto-subscribed by default. For SMS-only contacts, set opt_in: true explicitly (TCPA compliance).
Parameters* required
dry_runbooleanPreview import without persisting (default: false)default: false
recordsarrayArray of contact objects (max 100): {email, phone, first_name, last_name, country_code, source, opt_in}
import_idintegerExisting Import record ID for CSV processing
idempotency_keystringOptional deduplication key
nitro_compose_emailCreate, update, or clone an email template. Brand theme applied automatically. Modes (auto-detected): - Create: provide sections + subject (required). Sections define the email layout. - Update: provide template_id + any fields to change. Use if_version for optimistic concurre...14 params
Create, update, or clone an email template. Brand theme applied automatically. Modes (auto-detected): - Create: provide sections + subject (required). Sections define the email layout. - Update: provide template_id + any fields to change. Use if_version for optimistic concurre...
Parameters* required
goalstringGoal-driven composition (Phase 5 — not yet available)
namestringTemplate display name
themeobjectTheme overrides merged on top of brand theme. Keys: brand_color (hex), bg_color (hex), text_color (hex), font_body (string), font_heading (string), logo_url (URL)
dry_runbooleanValidate and preview without persistingdefault: false
subjectstringEmail subject line (recommended under 60 chars)
based_onintegerSource template ID for clone mode — creates a copy
reply_tostringReply-to email address
sectionsarrayArray of section objects: {type, props, styles?}. Read nitro://schema for full prop specs.
Section types and key props:
- header: {logo_url, logo_alt, logo_width, background_color}
- text: {content (HTML string)}
- image: {src, alt, href, width}
- button: {text, href, background_color, text_color, align, border_radius}
- columns: {columns: [{width, sections: [...]}]} — nested sections inside columns
- product: {name, price, image_url, href, description}
- social: {links: [{platform, url}], align}
- divider: {color, width, padding}
- spacer: {height}
- footer: {company_name, address, unsubscribe_text}
from_namestringSender name (falls back to account default)
preheaderstringEmail preheader text shown in inbox preview
from_emailstringSender email (falls back to account default)
if_versionintegerOptimistic concurrency — rejects update if template version mismatches
template_idintegerTemplate ID for update mode — provide with fields to change
idempotency_keystringDedup key — same key returns cached result
nitro_compose_flowCreate or replace an automation flow from trigger + steps array. Creates a draft — use nitro_control_delivery to approve and activate. Modes: create (new flow), replace (rebuild existing — requires confirm: true + flow_id), patch (rename only — requires flow_id). Step types: e...9 params
Create or replace an automation flow from trigger + steps array. Creates a draft — use nitro_control_delivery to approve and activate. Modes: create (new flow), replace (rebuild existing — requires confirm: true + flow_id), patch (rename only — requires flow_id). Step types: e...
Parameters* required
goalstringGoal string for AI generation (Phase 5C — feature gated)
modestringcreate: new flow; replace: rebuild existing flow graph; patch: metadata onlyone of
create · replace · patchdefault: createnamestringFlow name (required for create mode)
stepsarrayOrdered array of flow steps. Required props per type:
- email: subject (required), design ({sections, theme}) or body, preheader, from_name, from_email, reply_to, transactional (boolean), bcc (string, optional BCC email address)
- sms: body (required)
- wait: duration (integer, seconds — e.g. 86400 = 1 day)
- split: filters (required, [{name, predicate, value}]), yes (steps array), no (steps array). NO nested splits.
- emit_event: event_name (required), event_data (object), forward_event_data (boolean)
- webhook: url (required), method (POST or PUT, default POST), headers (object), body (template string with merge tags)
- subscribe: channel (phone, email, or all — default phone). Subscribes the contact.
- unsubscribe: channel (phone, email, or all — default phone). Unsubscribes the contact.
confirmbooleanRequired for replace modedefault: false
dry_runbooleanPreview graph without persistingdefault: false
flow_idintegerRequired for replace/patch modes
triggerobjectidempotency_keystringDeduplication key for retry safety
nitro_compose_campaignCreate an email or SMS campaign with audience targeting and optional scheduling. Creates a draft — use nitro_control_delivery to approve and send. Email modes (channel auto-detected as "email" when sections or template_id provided): - Inline: sections + subject (required) — co...16 params
Create an email or SMS campaign with audience targeting and optional scheduling. Creates a draft — use nitro_control_delivery to approve and send. Email modes (channel auto-detected as "email" when sections or template_id provided): - Inline: sections + subject (required) — co...
Parameters* required
bodystringSMS body text (sms campaigns) or email plain text
goalstringGoal string for AI generation (Phase 5C — feature gated)
namestringCampaign name
themeobjectEmail theme overrides merged on brand theme: {brand_color, bg_color, text_color, font_body, font_heading, logo_url}
channelstringAuto-detected as 'email' when sections or template_id provided. Set explicitly to 'sms' for SMS campaigns.one of
email · smsdefault: emaildry_runbooleanPreview campaign without creating (default: false)default: false
subjectstringEmail subject line (email campaigns)
audienceobjectTarget audience for the campaign
reply_tostringReply-to email override
sectionsarrayEmail design sections array — same format as nitro_compose_email. Requires subject.
from_namestringSender name override
preheaderstringEmail preheader (email campaigns)
from_emailstringSender email override
template_idintegerClone design from existing template (email campaigns)
scheduled_atstringISO 8601 delivery time (e.g. '2026-03-01T10:00:00Z'). Omit for manual send.
idempotency_keystringOptional deduplication key
nitro_manage_domainsManage sending domains — add, verify, list, and remove. Domain verification required before sending email.3 params
Manage sending domains — add, verify, list, and remove. Domain verification required before sending email.
Parameters* required
paramsobjectOperation-specific parameters.
confirmbooleanRequired for remove operation (destructive)default: false
operationstringWhich domain operation to perform:
add — params: {domain_name (required, e.g. "send.acme.com")}. Registers domain with email provider and returns DNS records.
The user must add these DNS records at their domain registrar.
Idempotent: calling add on a pending domain re-returns the DNS records.
verify — params: {domain_name (required)}. Checks with the email provider if DNS records have propagated.
If verified, completes the domain_verified onboarding step and unlocks sending.
If still pending, returns the DNS records again so you can re-show them to the user.
list — no params needed. Returns all account domains with their verification status and DNS records.
Includes domain_limit (from tier) and domains_used count.
remove — params: {domain_name (required)}. Deletes the domain. Requires confirm: true.one of
add · verify · list · removenitro_configure_accountConfigure account sender defaults (from_name, from_email, reply_to) and test email recipients. Call with no fields to read current config. from_email must match a verified domain.4 params
Configure account sender defaults (from_name, from_email, reply_to) and test email recipients. Call with no fields to read current config. from_email must match a verified domain.
Parameters* required
reply_tostringReply-to email address
from_namestringSender display name (e.g. 'Acme Marketing')
from_emailstringSender email address (must match a verified domain)
test_email_recipientsarraySaved email addresses for test sends (max 5). Pass empty array to clear.
nitro_review_and_testReview email content with validation, spam scoring, and preflight checks (review), or send a real test email (send_test). review is read-only analysis; send_test delivers a real email to the specified recipients. For flow targets, review covers every email step. Use template_i...6 params
Review email content with validation, spam scoring, and preflight checks (review), or send a real test email (send_test). review is read-only analysis; send_test delivers a real email to the specified recipients. For flow targets, review covers every email step. Use template_i...
Parameters* required
targetstringEntity type. Required for review. Optional for send_test when template_id is provided directly.one of
template · flow · campaignoperationstringreview (read-only analysis of the target) or send_test (send a real test email for one template)one of
review · send_testtarget_idintegerEntity ID. Required with target for review. Optional for send_test when template_id is provided directly.
contact_idintegerContact ID — uses their email as recipient and their data for merge-tag personalization
template_idintegerTemplate ID to send a test for directly, or to choose a specific email step in a multi-email flow
send_test_toarrayExplicit email recipients (max 5). Omit to use saved recipients or account owner.
nitro_control_deliveryManage delivery lifecycle for flows and campaigns. State: draft -> approve -> live/schedule <> pause, cancel -> archive.4 params
Manage delivery lifecycle for flows and campaigns. State: draft -> approve -> live/schedule <> pause, cancel -> archive.
Parameters* required
operationstringLifecycle operation. approve runs preflight. schedule is campaign-only (requires scheduled_at). Most require prior approval.one of
approve · reject · live · schedule · pause · resumetarget_idintegerEntity ID
target_typestringEntity typeone of
flow · campaignscheduled_atstringRequired for schedule operation (ISO 8601 datetime)
nitro_get_insightsGet email analytics with trends, benchmarks, and recommendations.3 params
Get email analytics with trends, benchmarks, and recommendations.
Parameters* required
scopestringScope of insights: account-wide, per flow, per campaign, or per messageone of
account · flow · campaign · messageperiodstringTime period for metrics (default 30d)one of
7d · 30d · 90ddefault: 30dentity_idintegerRequired for flow/campaign/message scope
nitro_configure_providersConfigure BYO email provider credentials or check provider status.5 params
Configure BYO email provider credentials or check provider status.
Parameters* required
regionstringOptional provider region, e.g. us-east-1
api_keystringProvider API key (required for configure, never returned in responses)
providerstringEmail provider (required for configure)one of
mailgun · sesoperationstringconfigure sets BYO provider credentials; status checks current provider healthone of
configure · statusapi_secretstringOptional provider secret (never returned in responses)
nitro_set_memoryRead or update the AI memory document. Operations: read (get current), update (replace entirely), patch (replace a ## section by heading), append (add text to end).6 params
Read or update the AI memory document. Operations: read (get current), update (replace entirely), patch (replace a ## section by heading), append (add text to end).
Parameters* required
contentstringNew content for the section (patch) or text to append (append).
dry_runbooleandefault: false
headingstringSection heading to patch (e.g. 'Brand Goals'). Required for patch operation. Matches ## headings.
documentstringFull markdown document (required for update).
operationstringread: get current document. update: replace entirely. patch: replace a ## section by heading. append: add text to end.one of
read · update · patch · appendidempotency_keystringnitro_manage_billingManage subscription billing — check plan status, start checkout, poll payment, list plans. Operations: - status — no params. Returns current subscription, plan, and account tier. - checkout — params: {plan_id (required)}. Creates a Stripe Checkout Session URL for the operator...2 params
Manage subscription billing — check plan status, start checkout, poll payment, list plans. Operations: - status — no params. Returns current subscription, plan, and account tier. - checkout — params: {plan_id (required)}. Creates a Stripe Checkout Session URL for the operator...
Parameters* required
paramsobjectOperation-specific parameters.
operationstringBilling operation to performone of
status · checkout · checkout_status · plansnitro_send_messageSend a transactional email or SMS to a single recipient immediately. No campaign, no audience, no approval required. Use for: receipts, password resets, OTPs, order confirmations, system notifications. NOT for marketing broadcasts to lists/segments — use nitro_compose_campaign...8 params
Send a transactional email or SMS to a single recipient immediately. No campaign, no audience, no approval required. Use for: receipts, password resets, OTPs, order confirmations, system notifications. NOT for marketing broadcasts to lists/segments — use nitro_compose_campaign...
Parameters* required
tostringRecipient email address or E.164 phone number
bodystringMessage body. Required for SMS. Optional plain text for email.
dataobjectMerge variables e.g. { order_id: 123, name: 'Alice' }
channelstringDelivery channelone of
email · smsdry_runbooleanValidate and preview without sendingdefault: false
subjectstringEmail subject line (required for email)
template_idintegerLoad email design from an existing template (email only)
idempotency_keystringPrevents duplicate sends on retry
nitro_request_supportSubmit a support request to the Nitrosend team. Only call when the user explicitly asks to contact support or when you have exhausted other options and cannot resolve their issue. Never suggest or mention this tool proactively. Before calling, summarize the issue and attempt t...2 params
Submit a support request to the Nitrosend team. Only call when the user explicitly asks to contact support or when you have exhausted other options and cannot resolve their issue. Never suggest or mention this tool proactively. Before calling, summarize the issue and attempt t...
Parameters* required
messagestringDetailed description of the issue (max 1000 chars)
subjectstringBrief summary of the issue
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →Registryactive
Package@nitrosend/mcp
TransportSTDIO, HTTP
UpdatedMar 24, 2026
