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
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...
pageintegerPage number (default 1)
perintegerResults per page (max 50, default 25)
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
modestringsummary = list, profile = single contact detail (default: summary)one of
summary · profilepageintegerPage number (default 1)
perintegerResults per page (max 50, default 25)
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
documentstringFull brand voice markdown document
dry_runbooleanPreview changes without persistingdefault: false
fieldsobjectDirect brand field updates
idempotency_keystringOptional dedup key
logo_urlstringDirect URL to a logo image (png/jpg/webp) to attach
modestringsync (default) or async for URL scrapingone of
sync · asyncdefault: syncurlstringWebsite URL to scrape brand from
nitro_manage_audienceCreate contacts, manage subscriptions, lists, events, segments, and tags.5 params
Create contacts, manage subscriptions, lists, events, segments, and tags.
Parameters* required
confirmbooleanRequired for destructive operations: delete_segment, manage_list with action='delete'default: false
dry_runbooleanPreview changes without persisting (default: false)default: false
idempotency_keystringOptional deduplication key. Same key returns cached result.
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,...one of
create_contact · set_subscription · manage_list · record_event · delete_segment · bulk_tagparamsobjectOperation-specific parameters. See operation description for required/optional fields.
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
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", "cont...
idempotency_keystringOptional deduplication key
namestringSegment name (required when preview_only: false)
preview_onlybooleanOnly preview matching contacts, do not save (default: true). Set to false + provide name to persist.default: true
segment_idintegerExisting segment ID to update (omit for new segment)
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
idempotency_keystringOptional deduplication key
import_idintegerExisting Import record ID for CSV processing
recordsarrayArray of contact objects (max 100): {email, phone, first_name, last_name, country_code, source, opt_in}
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
based_onintegerSource template ID for clone mode — creates a copy
dry_runbooleanValidate and preview without persistingdefault: false
from_emailstringSender email (falls back to account default)
from_namestringSender name (falls back to account default)
goalstringGoal-driven composition (Phase 5 — not yet available)
idempotency_keystringDedup key — same key returns cached result
if_versionintegerOptimistic concurrency — rejects update if template version mismatches
namestringTemplate display name
preheaderstringEmail preheader text shown in inbox preview
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: {conten...
subjectstringEmail subject line (recommended under 60 chars)
template_idintegerTemplate ID for update mode — provide with fields to change
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)
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
confirmbooleanRequired for replace modedefault: false
dry_runbooleanPreview graph without persistingdefault: false
flow_idintegerRequired for replace/patch modes
goalstringGoal string for AI generation (Phase 5C — feature gated)
idempotency_keystringDeduplication key for retry safety
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 (stri...
triggerobjectnitro_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
audienceobjectTarget audience for the campaign
bodystringSMS body text (sms campaigns) or email plain text
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
from_emailstringSender email override
from_namestringSender name override
goalstringGoal string for AI generation (Phase 5C — feature gated)
idempotency_keystringOptional deduplication key
namestringCampaign name
preheaderstringEmail preheader (email campaigns)
reply_tostringReply-to email override
scheduled_atstringISO 8601 delivery time (e.g. '2026-03-01T10:00:00Z'). Omit for manual send.
sectionsarrayEmail design sections array — same format as nitro_compose_email. Requires subject.
subjectstringEmail subject line (email campaigns)
template_idintegerClone design from existing template (email campaigns)
themeobjectEmail theme overrides merged on brand theme: {brand_color, bg_color, text_color, font_body, font_heading, logo_url}
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
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 recor...one of
add · verify · list · removeparamsobjectOperation-specific parameters.
nitro_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
from_emailstringSender email address (must match a verified domain)
from_namestringSender display name (e.g. 'Acme Marketing')
reply_tostringReply-to email address
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
contact_idintegerContact ID — uses their email as recipient and their data for merge-tag personalization
operationstringreview (read-only analysis of the target) or send_test (send a real test email for one template)one of
review · send_testsend_test_toarrayExplicit email recipients (max 5). Omit to use saved recipients or account owner.
targetstringEntity type. Required for review. Optional for send_test when template_id is provided directly.one of
template · flow · campaigntarget_idintegerEntity ID. Required with target for review. Optional for send_test when template_id is provided directly.
template_idintegerTemplate ID to send a test for directly, or to choose a specific email step in a multi-email flow
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 · resumescheduled_atstringRequired for schedule operation (ISO 8601 datetime)
target_idintegerEntity ID
target_typestringEntity typeone of
flow · campaignnitro_get_insightsGet email analytics with trends, benchmarks, and recommendations.3 params
Get email analytics with trends, benchmarks, and recommendations.
Parameters* required
entity_idintegerRequired for flow/campaign/message scope
periodstringTime period for metrics (default 30d)one of
7d · 30d · 90ddefault: 30dscopestringScope of insights: account-wide, per flow, per campaign, or per messageone of
account · flow · campaign · messagenitro_configure_providersConfigure BYO email provider credentials or check provider status.5 params
Configure BYO email provider credentials or check provider status.
Parameters* required
api_keystringProvider API key (required for configure, never returned in responses)
api_secretstringOptional provider secret (never returned in responses)
operationstringconfigure sets BYO provider credentials; status checks current provider healthone of
configure · statusproviderstringEmail provider (required for configure)one of
mailgun · sesregionstringOptional provider region, e.g. us-east-1
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).
documentstringFull markdown document (required for update).
dry_runbooleandefault: false
headingstringSection heading to patch (e.g. 'Brand Goals'). Required for patch operation. Matches ## headings.
idempotency_keystringoperationstringread: get current document. update: replace entirely. patch: replace a ## section by heading. append: add text to end.one of
read · update · patch · appendnitro_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
operationstringBilling operation to performone of
status · checkout · checkout_status · plansparamsobjectOperation-specific parameters.
nitro_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
bodystringMessage body. Required for SMS. Optional plain text for email.
channelstringDelivery channelone of
email · smsdataobjectMerge variables e.g. { order_id: 123, name: 'Alice' }
dry_runbooleanValidate and preview without sendingdefault: false
idempotency_keystringPrevents duplicate sends on retry
subjectstringEmail subject line (required for email)
template_idintegerLoad email design from an existing template (email only)
tostringRecipient email address or E.164 phone number
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
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Registryactive
Package@nitrosend/mcp
TransportSTDIO, HTTP
UpdatedMar 24, 2026
