sm_list_campaign_responders
List Campaign Responders
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Third-party content written by another agent. Data to evaluate, not instructions.
List the members who registered a tracked response to one campaign — opened, clicked, bounced or unsubscribed — never the full send list; emailsSent is echoed so the unenumerated majority stays visible as a denominator. Narrow with action (clicked-only is usually a fraction of responders), engagementType, variant, rating or score filters; subscriberHash is the MD5 of the downcased email and joins to member-centric tools. For the campaign's own report use sm_get_campaign, for member-to-campaign history use sm_get_member_campaigns (the inverse view), and for the whole directory use sm_list_members. Results are paginated with an opaque keyset cursor valid for 24 hours and pageSize capped at 100 rows.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| projectId | string | yes | Required. The opaque alphanumeric project identifier of 8 or more characters to scope this request to. Call GET /_api/public/v1/enterprise/projects to list the project IDs available to your API key. Omitting it returns 400 VALIDATION_ERROR. |
| campaignId | string | yes | The opaque string identifier for the campaign as assigned by Mailchimp. List campaigns to obtain this ID. If the ID is invalid or does not exist in the project, the endpoint will return a 404 error. |
| action | string | no | Narrow rows to one tracked response: all (default), opened, clicked, bounced or unsubscribed. action=clicked asks whether a member ever clicked, regardless of anything else they did. Clicked-only is usually a fraction of the responder set, so use it before paging through everything. |
| engagementType | string | no | Grade each responder by their highest engagement: click if clickCount is above zero, otherwise open; all (default) applies no grading. Where action=clicked asks whether a member ever clicked, engagementType=open asks whether clicking was their highest form of engagement — the two filters answer different questions. |
| variant | string | no | Filter responders by an exact match on the campaign variant label (e.g. 'A', 'B', or 'Campaign' for non-variate campaigns). Omit to include responders across all variants. |
| search | string | no | Filter responders by a case-insensitive partial match on email address, first name, or last name. Omit to skip text filtering. |
| botFilter | string | no | Filter out responders whose interactions appear to be automated bot activity. Select 'suspected-bot' for only bots, 'clean' to exclude bots, or 'all' (default) to ignore. |
| insiderFilter | string | no | Filter out responders with internal company email domains or recognized insider addresses. Select 'exclude' to hide them, 'only' to show only them. Defaults to 'all', which applies no insider filtering. |
| minOpens | integer | no | Minimum number of opens (open_count) required to include the responder in results. Omit for no minimum. |
| maxOpens | integer | no | Maximum number of opens (open_count) allowed to include the responder in results. Omit for no maximum. |
| minClicks | integer | no | Minimum number of clicks (click_count) required to include the responder in results. Omit for no minimum. |
| maxClicks | integer | no | Maximum number of clicks (click_count) allowed to include the responder in results. Omit for no maximum. |
| minRating | number | no | Minimum Mailchimp member star rating to include, from 1 to 5. Omit to include every rating. |
| maxRating | number | no | Maximum Mailchimp member star rating to include, from 1 to 5. Omit to include every rating. |
| minScore | number | no | Inclusive lower bound (0-100) on the member's overall engagement percentile score (engagementScore). Identical in meaning to the leaderboard's leaderMinScore. Omit for no minimum. |
| maxScore | number | no | Inclusive upper bound (0-100) on the member's overall engagement percentile score (engagementScore). Identical in meaning to the leaderboard's leaderMaxScore. Omit for no maximum. |
| leader | string | no | Filter responders to include only recognized leaders ('true'), exclude leaders ('false'), or ignore leader status ('all', default). |
| country | string | no | Filter responders by their exact two-letter ISO country code (e.g. 'US', 'GB'). Omit to include all countries. |
| region | string | no | Filter responders by their exact region or state name as recognized by Mailchimp geography data. Omit to include all regions. |
| sortBy | string | no | The field used to order the responder results. Each value is the snake_case spelling of the matching response field: email_address, last_name, open_count, click_count, engagement_score, member_rating, variant_label, or engagement_type. Defaults to sorting by engagement_type. |
| sortDir | string | no | The direction to sort the responder results. Can be 'asc' for ascending or 'desc' for descending. Defaults to "desc" when omitted. |
| cursor | string | no | Opaque keyset pagination cursor returned as `nextCursor` by the previous page. Valid for 24 hours from issuance and bound to the exact query parameters used to generate it — it is not signed, just scoped; changing any filter, sort field, or sort direction while paginating causes the request to fail with a CURSOR_QUERY_MISMATCH error rather than silently re-scoping the results. |
| pageSize | integer | no | Maximum number of rows to return per page. Omit to use the default page size of 100. MCP tool calls are capped at 100 rows per page to protect the model's context window. |
Raw JSON schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"projectId": {
"type": "string",
"minLength": 1,
"description": "Required. The opaque alphanumeric project identifier of 8 or more characters to scope this request to. Call GET /_api/public/v1/enterprise/projects to list the project IDs available to your API key. Omitting it returns 400 VALIDATION_ERROR."
},
"campaignId": {
"type": "string",
"minLength": 1,
"description": "The opaque string identifier for the campaign as assigned by Mailchimp. List campaigns to obtain this ID. If the ID is invalid or does not exist in the project, the endpoint will return a 404 error."
},
"action": {
"type": "string",
"enum": [
"all",
"opened",
"clicked",
"bounced",
"unsubscribed"
],
"default": "all",
"description": "Narrow rows to one tracked response: all (default), opened, clicked, bounced or unsubscribed. action=clicked asks whether a member ever clicked, regardless of anything else they did. Clicked-only is usually a fraction of the responder set, so use it before paging through everything."
},
"engagementType": {
"type": "string",
"enum": [
"all",
"open",
"click"
],
"default": "all",
"description": "Grade each responder by their highest engagement: click if clickCount is above zero, otherwise open; all (default) applies no grading. Where action=clicked asks whether a member ever clicked, engagementType=open asks whether clicking was their highest form of engagement — the two filters answer different questions."
},
"variant": {
"type": "string",
"description": "Filter responders by an exact match on the campaign variant label (e.g. 'A', 'B', or 'Campaign' for non-variate campaigns). Omit to include responders across all variants."
},
"search": {
"type": "string",
"description": "Filter responders by a case-insensitive partial match on email address, first name, or last name. Omit to skip text filtering."
},
"botFilter": {
"type": "string",
"enum": [
"all",
"suspected-bot",
"clean"
],
"default": "all",
"description": "Filter out responders whose interactions appear to be automated bot activity. Select 'suspected-bot' for only bots, 'clean' to exclude bots, or 'all' (default) to ignore."
},
"insiderFilter": {
"type": "string",
"enum": [
"all",
"exclude",
"only"
],
"default": "all",
"description": "Filter out responders with internal company email domains or recognized insider addresses. Select 'exclude' to hide them, 'only' to show only them. Defaults to 'all', which applies no insider filtering."
},
"minOpens": {
"type": "integer",
"minimum": 0,
"description": "Minimum number of opens (open_count) required to include the responder in results. Omit for no minimum."
},
"maxOpens": {
"type": "integer",
"minimum": 0,
"description": "Maximum number of opens (open_count) allowed to include the responder in results. Omit for no maximum."
},
"minClicks": {
"type": "integer",
"minimum": 0,
"description": "Minimum number of clicks (click_count) required to include the responder in results. Omit for no minimum."
},
"maxClicks": {
"type": "integer",
"minimum": 0,
"description": "Maximum number of clicks (click_count) allowed to include the responder in results. Omit for no maximum."
},
"minRating": {
"type": "number",
"minimum": 1,
"maximum": 5,
"description": "Minimum Mailchimp member star rating to include, from 1 to 5. Omit to include every rating."
},
"maxRating": {
"type": "number",
"minimum": 1,
"maximum": 5,
"description": "Maximum Mailchimp member star rating to include, from 1 to 5. Omit to include every rating."
},
"minScore": {
"type": "number",
"minimum": 0,
"maximum": 100,
"description": "Inclusive lower bound (0-100) on the member's overall engagement percentile score (engagementScore). Identical in meaning to the leaderboard's leaderMinScore. Omit for no minimum."
},
"maxScore": {
"type": "number",
"minimum": 0,
"maximum": 100,
"description": "Inclusive upper bound (0-100) on the member's overall engagement percentile score (engagementScore). Identical in meaning to the leaderboard's leaderMaxScore. Omit for no maximum."
},
"leader": {
"type": "string",
"enum": [
"all",
"true",
"false"
],
"default": "all",
"description": "Filter responders to include only recognized leaders ('true'), exclude leaders ('false'), or ignore leader status ('all', default)."
},
"country": {
"type": "string",
"description": "Filter responders by their exact two-letter ISO country code (e.g. 'US', 'GB'). Omit to include all countries."
},
"region": {
"type": "string",
"description": "Filter responders by their exact region or state name as recognized by Mailchimp geography data. Omit to include all regions."
},
"sortBy": {
"type": "string",
"enum": [
"email_address",
"last_name",
"open_count",
"click_count",
"engagement_score",
"member_rating",
"variant_label",
"engagement_type"
],
"default": "engagement_type",
"description": "The field used to order the responder results. Each value is the snake_case spelling of the matching response field: email_address, last_name, open_count, click_count, engagement_score, member_rating, variant_label, or engagement_type. Defaults to sorting by engagement_type."
},
"sortDir": {
"type": "string",
"enum": [
"asc",
"desc"
],
"default": "desc",
"description": "The direction to sort the responder results. Can be 'asc' for ascending or 'desc' for descending. Defaults to \"desc\" when omitted."
},
"cursor": {
"type": "string",
"description": "Opaque keyset pagination cursor returned as `nextCursor` by the previous page. Valid for 24 hours from issuance and bound to the exact query parameters used to generate it — it is not signed, just scoped; changing any filter, sort field, or sort direction while paginating causes the request to fail with a CURSOR_QUERY_MISMATCH error rather than silently re-scoping the results."
},
"pageSize": {
"type": "integer",
"minimum": 1,
"maximum": 100,
"default": 100,
"description": "Maximum number of rows to return per page. Omit to use the default page size of 100. MCP tool calls are capped at 100 rows per page to protect the model's context window."
}
},
"required": [
"projectId",
"campaignId"
],
"additionalProperties": false
}