lemlist

name

lemlist

description

Lemlist is a sales engagement platform that provides email outreach, multichannel sequencing, lead database access, and personalization tools, allowing sales teams to automate prospecting, manage campaigns, and improve response rates through integrated workflows and analytics. Read and write lemlist data through One: leads, campaigns, schedules, unsubscribes, tasks, campaignleads and more, 82 actions with real parameter documentation. Use whenever the user asks to look something up in lemlist, create or update a record there, or build code against the lemlist API.

lemlist through One

Lemlist is a sales engagement platform that provides email outreach, multichannel sequencing, lead database access, and personalization tools, allowing sales teams to automate prospecting, manage campaigns, and improve response rates through integrated workflows and analytics.

One exposes lemlist through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform lemlist if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm lemlist is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real lemlist account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

Leads

Action	Method	Path	Action id
Retrieve Lead With Email	GET	/leads/{{email}}	conn_mod_def::GLK-IiUN48A::_CVeb90bRn2D6hjbXV9Fsg
Retrieve Lead With Email Or Id	GET	/leads	conn_mod_def::GLK-Il845Wg::OUGcX2iLRGykGTc1HUyGNw
Add Variables	POST	/leads/{{leadId}}/variables	conn_mod_def::GLK-IPtvEDA::Xpt5hObVRieWNmw4dKy7EQ
Create Lead In A Campaign	POST	/campaigns/{{campaignId}}/leads/{{email}}	conn_mod_def::GLK-IQjraPg::kK5a7YHQRaCLxT4d5JYySw
Delete Lead	DELETE	/campaigns/{{campaignId}}/leads/{{leadId}}	conn_mod_def::GLK-IPNvEwg::8GQtkxpHSUKFoezyMUPjCw
Enrich Lead	POST	/leads/{{leadId}}/enrich	conn_mod_def::GLK-H8yGFJA::9tr5yLXhRCuLbS9BMHVz-w
Import Leads From CRM	POST	/campaigns/{{campaignId}}/leads/import	conn_mod_def::GLK-IYi0Dng::6zoQP-F8SfS_1jaDleAy-Q
Mark A Lead As Interested	POST	/leads/interested/{{leadIdOrEmail}}	conn_mod_def::GLK-IapFKmg::loDZNBNESzCYhHxW3NjILQ
Mark A Lead As Not Interested	POST	/leads/notinterested/{{leadIdOrEmail}}	conn_mod_def::GLK-IYgKRaA::LrVl6i2AQ9CGgvxCfHb4Wg
Pause a Lead	POST	/leads/pause/{{leadId}}	conn_mod_def::GLK-IhoShNA::_SbT_4RYQKOk-EFcD1Lwew
Resume A Paused Lead	POST	/leads/start/{{leadId}}	conn_mod_def::GLK-Ihqu6-A::NKXAizfjR5WjW2y2GhXRZg
Update Lead	PATCH	/campaigns/{{campaignId}}/leads/{{leadId}}

2 more Leads actions are available through search.

Campaigns

Action	Method	Path	Action id
Retrieve All Campaigns	GET	/api/campaigns	conn_mod_def::GLK-HlSSE7g::alb3yX9rSCuQqM_lTUUj6A
Retrieve One Campaigns	GET	/campaigns/{{campaignId}}	conn_mod_def::GLK-HjqtrKA::LAyrae3MRD-IKBdb1Hvj6Q
Associate Schedule With Campaign	POST	/campaigns/{{campaignId}}/schedules/{{scheduleId}}	conn_mod_def::GLK-Jamyklg::vIIhE9zbQ3e1xO60zXlb-Q
Create A New Campaign	POST	/api/campaigns	conn_mod_def::GLK-HZ7us-A::cJCGi8bdQSGwnxgBun0_BQ
Export Campaign Send Status By Email	PUT	/campaigns/{{campaignId}}/export/{{exportId}}/email/{{email}}	conn_mod_def::GLK-Hb2-3vg::dsOQuy6_TpqH80KPiaMTZA
Pause A Campaign	POST	/campaigns/{{campaignId}}/pause	conn_mod_def::GLK-Hj968_A::Mf3_ih8yQBuJWLS95mAoig
Unsubscribe Lead From Campaign	DELETE	/campaigns/{{campaignId}}/leads/{{email}}	conn_mod_def::GLK-IhslGcg::NwWEwevYQ1SI8NibFnh3kA
Update Campaign Configuration	PATCH	/campaigns/{{campaignId}}	conn_mod_def::GLK-HxAnbJA::O8ZC7EKITrm0nRcFNujWQA

Schedules

Action	Method	Path	Action id
Retrieve All Schedules	GET	/api/schedules	conn_mod_def::GLK-JjqUgcg::Koyhh_fyTqeR0aEjXCX2zw
Retrieve One Schedule	GET	/schedules/{{scheduleId}}	conn_mod_def::GLK-JjPPsDg::XqHmDW9wTyu35cyUw979aQ
Create A New Schedule	POST	/api/schedules	conn_mod_def::GLK-JZqXK6g::ppkVZLcqTAW-LVSIR8dpWA
Delete A Schedule	DELETE	/schedules/{{scheduleId}}	conn_mod_def::GLK-JZq4MMg::BJvId8PYTBeKHQ0HePUSmg
Update A Schedule	PATCH	/schedules/{{scheduleId}}	conn_mod_def::GLK-JjPDezg::MSO-ZsiOSc2m-vUfHD-c7w

Unsubscribes

Action	Method	Path	Action id
Export Unsubscribes	GET	/api/unsubs/export	conn_mod_def::GLK-K1s-NZA::KT_CATx-TnOLtZdRSrPu4w
Get Unsubscribe Email	GET	/unsubscribes/{{email}}	conn_mod_def::GLK-K18gm_g::9uqiqNd9T4uJqQMHCIjL5A
Retrieve Unsubscribes	GET	/api/unsubscribes/	conn_mod_def::GLK-K2b6VEA::XKA_y1DyR_i_IYoRlWuIEA
Add Unsubscribe Email-Domain	POST	/unsubscribes/{{emailOrDomain}}	conn_mod_def::GLK-Kuac-HA::oH-Xar_GRrqqVkWhrVN0sA
Delete Unsubscribe Email	DELETE	/unsubscribes/{{email}}	conn_mod_def::GLK-KuD2mug::mE-tUYyNStelk6Xnf7kw7Q

Tasks

Action	Method	Path	Action id
Get Tasks	GET	/api/tasks	conn_mod_def::GLK-J1bDBpg::FPUcfADbTVOWqq1Jh6TGFg
Create Task	POST	/api/tasks	conn_mod_def::GLK-J0tckZg::SmNWG7PLR1KUS8K2x6DymA
Ignore Tasks	POST	/api/tasks/ignore	conn_mod_def::GLK-Km_C2oA::igDnzof-SraG7yXoPaffIw
Update Tasks	PATCH	/api/tasks	conn_mod_def::GLK-J13vmqg::7Iv6QI1AQGyFTBkzD9UayQ

CampaignLeads

Action	Method	Path	Action id
Export Campaign Leads	GET	/campaigns/{{campaignId}}/export/leads	conn_mod_def::GLK-HafA0gA::h6a55ZCOTiSeCyS0torQEw
Mark A Lead As Interested In One Campaign	POST	/campaigns/{{campaignId}}/leads/{{leadIdOrEmail}}/interested	conn_mod_def::GLK-IY50j2g::pqSAhE7kQri2xezuzy-M9Q
Mark A Lead As Not Interested In One Campaign	POST	/campaigns/{{campaignId}}/leads/{{leadIdOrEmail}}/notinterested	conn_mod_def::GLK-IYf5r4g::6-9TJqinRrCGG15lsZi0NQ

Companies

Action	Method	Path	Action id
Companies Schema	GET	/schema/companies	conn_mod_def::GLK-JHkOrAA::ljnJskk-SnWkbaDBL_hSNw
Retrieve Companies	GET	/api/companies	conn_mod_def::GLK-HyzPYHg::juktKUoSQMm5GXOL8xTv3g
Companies Database	POST	/api/database/companies	conn_mod_def::GLK-JJzMd6g::BSjHaVVqTd6QlNUE1iaH7Q

CampaignStats

Action	Method	Path	Action id
Campaign Stats V2	GET	/v2/campaigns/{{campaignId}}/stats	conn_mod_def::GLK-JvAoaLA::6frRQ6wBR4KJPYtH6MB9sw
Get Campaign Stats	GET	/campaigns/{{campaignId}}/stats	conn_mod_def::GLK-JsfilEg::jHruW5YqQrefb65SQTDHVA

Contacts

Action	Method	Path	Action id
Get Contact	GET	/contacts/{{idOrEmail}}	conn_mod_def::GLK-Hxe-atA::Aa1pzIyITHqjHEuuTc-Mlw
Get Contacts	GET	/api/contacts	conn_mod_def::GLK-H58McsA::e_79ku9_TMqSc6aumtJ_FQ

CompanyNotes

Action	Method	Path	Action id
Retrieve Company Notes	GET	/companies/{{companyId}}/notes	conn_mod_def::GLK-HyxU3TA::6pvdbafbQjqqeHDraUzUZw
Create Company Note	POST	/companies/{{companyId}}/notes	conn_mod_def::GLK-HxqEPag::FDcsaaJ1S7Cm46yPJrRXwA

SequenceSteps

Action	Method	Path	Action id
Delete Sequence Step	DELETE	/sequences/{{sequenceId}}/steps/{{stepId}}	conn_mod_def::GLK-JsZUUyg::Y__iGCJhQFGqSrw5Y6aikg
Update Sequence Step	PATCH	/sequences/{{sequenceId}}/steps/{{stepId}}	conn_mod_def::GLK-JsQuTng::CmYIC__FQ96wrfJIeejU9w

Enrich

Action	Method	Path	Action id
Enrich #1	GET	/enrich/{{enrichId}}	conn_mod_def::GLK-H7vN1mA::Mjpxt97ZTNGsr4bY7F3qJw
Enrich #2	POST	/api/enrich	conn_mod_def::GLK-H9VpiDA::gj4_5mCzQSmnCNh7o_5ecA

Inbox

Action	Method	Path	Action id
Contact Messages	GET	/inbox/{{contactId}}	conn_mod_def::GLK-IFf_ijg::3xzKJiXlRXCpNGBDJ0W4Lw
Retrieve Inbox List	GET	/inbox	conn_mod_def::GLK-IFjsxLA::wEG7PQWHSqia7Z1cZvlctQ

Lemwarm

Action	Method	Path	Action id
Pause Lemwarm	POST	/lemwarm/{{userMailboxId}}/pause	conn_mod_def::GLK-Iu1vriA::fcvriA2RRWaFKgTyXB05FQ
Start Lemwarm	POST	/lemwarm/{{userMailboxId}}/start	conn_mod_def::GLK-JHXKccg::ytCBZjhJSrqyuoqPJFopqA

LemwarmSettings

Action	Method	Path	Action id
Get Settings	GET	/lemwarm/{{userMailboxId}}/settings	conn_mod_def::GLK-I_3uf_A::R6toK9I-Spm2L67OnDNNnQ
Update Settings	PATCH	/lemwarm/{{userMailboxId}}/settings	conn_mod_def::GLK-JSLC2vA::HuuP2Pb9Ream9MVnuUJy2g

Webhooks

Action	Method	Path	Action id
Get All Webhooks	GET	/api/hooks	conn_mod_def::GLK-LEMeh8A::v3IPkymCRSquqEonAOloNw
Delete A Webhook	DELETE	/hooks/{{hookId}}	conn_mod_def::GLK-LEszGnA::5B_fGJqxRmO-xtLAzTJYdA

CampaignExportStatus

Action	Method	Path	Action id
Get Status Of Campaign Export	GET	/campaigns/{{campaignId}}/export/{{exportId}}/status	conn_mod_def::GLK-HZ7FG3A::F-d-P5BaQwirbwiP8rOWaQ

CampaignStatsExport

Action	Method	Path	Action id
Start An Export Campaign Stats	GET	/campaigns/{{campaignId}}/export/start	conn_mod_def::GLK-HpsuU0A::xuqCudlCTj2wjM2VdHbC-Q

CampaignSequences

Action	Method	Path	Action id
Retrieve Campaign Sequences	GET	/campaigns/{{campaignId}}/sequences	conn_mod_def::GLK-JsQHt5A::0zfUeqdsSIOmI63FAXbrNw

Activities

Action	Method	Path	Action id
Retrieve Activities	GET	/api/activities/	conn_mod_def::GLK-Hb4Kbrg::VkVy6eUfSCa7C2ANzmWFiA

CampaignReports

Action	Method	Path	Action id
Reports	GET	/api/campaigns/reports	conn_mod_def::GLK-Hj29JvA::WR1i9GkIRpKUu4QwFbrJlQ

Enrichments

Action	Method	Path	Action id
Bulk Enrichments	POST	/api/v2/enrichments/bulk	conn_mod_def::GLK-H7E773A::PnhoFLDBT1GZJ4bzF7cJGA

InboxEmail

Action	Method	Path	Action id
Send Email	POST	/api/inbox/email	conn_mod_def::GLK-IEmHg8A::xHGQl0B4T62kYaj-T10Pkw

WhatsAppMessages

Action	Method	Path	Action id
Send WhatsApp Message	POST	/api/inbox/whatsapp	conn_mod_def::GLK-IFAh2lA::mUgLgLbDRd6p1tYJDmi1uw

LinkedinMessages

Action	Method	Path	Action id
Send Linkedin Message	POST	/api/inbox/linkedin	conn_mod_def::GLK-IHSoNbg::rwB1odJ9QKmgAe3JswdEkg

CrmFilters

Action	Method	Path	Action id
Get CRM Filters	GET	/api/crm/filters	conn_mod_def::GLK-IPsM-tA::kJxgXOveSaK7yZbjlEMjxQ

Variables

Action	Method	Path	Action id
Delete Variables	DELETE	/leads/{{leadId}}/variables	conn_mod_def::GLK-IPwgQ3g::e9RvjY96R2-xtlighdCuiA

DatabaseFilters

Action	Method	Path	Action id
Get Database Filters	GET	/api/database/filters	conn_mod_def::GLK-JHGGoeA::a3mCyAREQYqIj0OYkKZQDw

People

Action	Method	Path	Action id
People Schema	GET	/schema/people	conn_mod_def::GLK-JZ7M6gA::0UifEKZxT-S4W2XKUdnziQ

PeopleDatabase

Action	Method	Path	Action id
People Database	POST	/api/database/people	conn_mod_def::GLK-JbR-cSA::zQL9ngjrTh2i6n74cnCYgw

CampaignSchedules

Action	Method	Path	Action id
Retrieve Campaign Schedules	GET	/campaigns/{{campaignId}}/schedules/	conn_mod_def::GLK-JjPX-VA::iGvcB6ywTpKtf8x1OX5Ulw

Sequences

Action	Method	Path	Action id
Add Step To Sequence	POST	/sequences/{{sequenceId}}/steps	conn_mod_def::GLK-JjfparA::zhB3JKC_SFqHCyoygjTf5Q

Credits

Action	Method	Path	Action id
Get Credits	GET	/api/team/credits	conn_mod_def::GLK-J1_ynmg::km5NnUbTQsqXnsmt4QAZUw

Team

Action	Method	Path	Action id
Get Team	GET	/api/team	conn_mod_def::GLK-KuAkTvg::R0HYcYGUSQCppqeUxOWSgw

CrmUsers

Action	Method	Path	Action id
Get Users CRMs	GET	/api/team/crmUsers	conn_mod_def::GLK-KuOG_hA::b9nDGg4WTY2h3y58P1cMhQ

Senders

Action	Method	Path	Action id
Get Senders	GET	/api/team/senders	conn_mod_def::GLK-KuS7vSA::AofihtzCT_qUugXNjLXYMQ

Users

Action	Method	Path	Action id
Get User	GET	/users/{{userId}}	conn_mod_def::GLK-K1s5T6g::JCb6USqZS4u7pBYPzZEXLQ

Hooks

Action	Method	Path	Action id
Add A Webhook	POST	/hooks	conn_mod_def::GLK-K9N7kOg::9E-1sYCrTlejxDuSjoKOaA

This lists 80 of 82 actions. For anything not here, call search_one_platform_actions with platform lemlist. The full catalog is at https://www.withone.ai/knowledge/lemlist.

When a call fails

The error comes from lemlist, not from One. A 400 or 422 means your parameters do not match the schema, so re-read the knowledge and fix the field. A 401 or 403 means the connection needs re-authorizing, which no retry will fix. A 404 means the id is not on this account. A 429 means slow down. Never retry a write more than once: the first attempt may have landed.

Full catalog: https://www.withone.ai/knowledge/lemlist

Integration knowledge by One (withone.ai), licensed under One-Knowledge-1.0. Attribution must be preserved in derivative works.