> ## Documentation Index > Fetch the complete documentation index at: https://docs.influship.com/llms.txt > Use this file to discover all available pages before exploring further. # Lookup Creator Emails > Look up known email addresses for creators by creator ID or social username. **Billing behavior:** - Charged only for unique resolved creators with at least one returned email - Empty and unresolved results are not billable - Returns validation status so unvalidated emails are explicit **Pricing**: 5 credits per creator with at least one returned email ($0.05) ## OpenAPI ````yaml https://app.stainless.com/api/spec/documented/influship-api/openapi.documented.yml post /v1/creator-emails/lookup openapi: 3.1.0 info: title: Influship API version: 1.0.0 description: > Public API for creator search, profile lookup, and campaign-fit analysis. ## Authentication Send your API key in the `X-API-Key` header on every authenticated request. ```bash curl -H "X-API-Key: your_api_key" https://api.influship.com/v1/creators/autocomplete?q=fitness ``` ## Billing and Rate Limits The API uses credit-based billing and credit-based rate limits. - every endpoint has a credit cost - successful responses include `X-Credits-Charged` and `X-Credits-Features` - rate limits are enforced with per-minute and per-hour credit budgets - rate limit state is returned in the `RateLimit-*` headers ## Agentic Payments The security entries in this base SDK contract describe `X-API-Key` authentication. The hosted discovery document at `https://api.influship.com/openapi.json` augments currently enabled paid operations with `402` responses and `x-payment-info` metadata for x402 v2 and MPP. Use that hosted document when building no-key payment clients because supported operations and payment rails are deployment-dependent. ## Pagination List endpoints use cursor pagination. - send `limit` to control page size - use `next_cursor` from the response to fetch the next page - stop when `has_more` is `false` Search has one special rule: - `POST /v1/search` creates a persisted search session - `GET /v1/search/{id}` paginates that session for free - free pagination is capped by the original search `limit` ## Errors Errors use a consistent shape: ```json { "error": { "code": "rate_limit_exceeded", "message": "Rate limit exceeded (per minute)" } } ``` See each operation for exact request and response schemas. contact: name: Influship Support email: support@influship.com license: name: Proprietary url: https://influship.com/terms servers: - url: https://api.influship.com description: Production security: - ApiKeyAuth: [] tags: - name: Health description: API health and status endpoints - name: Creators description: >- Retrieve creator profiles and discover new creators through search, autocomplete, and lookalike matching. Creators are cross-platform entities that may have profiles on multiple social networks. - name: Profiles description: >- Access individual social media profiles with detailed metrics, growth data, and activity information. Profiles are platform-specific accounts linked to creators. - name: Creator Emails description: >- Look up known creator email addresses by creator ID or social username. Empty or unresolved results are not billable. - name: Posts description: >- Retrieve and analyze social media posts with engagement metrics, media content, and performance data. - name: Search description: >- AI-powered semantic search to find creators using natural language queries. Understands intent and context to match creators based on content themes, audience, and style. - name: Live Scraping description: >- Fetch fresh data directly from social platforms in real-time. Use when you need the most current information or data for profiles not yet in our database. paths: /v1/creator-emails/lookup: post: tags: - Creator Emails summary: Lookup Creator Emails description: >- Look up known email addresses for creators by creator ID or social username. **Billing behavior:** - Charged only for unique resolved creators with at least one returned email - Empty and unresolved results are not billable - Returns validation status so unvalidated emails are explicit **Pricing**: 5 credits per creator with at least one returned email ($0.05) operationId: lookupCreatorEmails requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CreatorEmailsLookupRequest' description: Creator email lookup request responses: '200': description: Creator email lookup response content: application/json: schema: $ref: '#/components/schemas/CreatorEmailsLookupResponse' '400': description: Validation error response content: application/json: schema: $ref: '#/components/schemas/Error400' '401': description: Authentication error response content: application/json: schema: $ref: '#/components/schemas/Error401' '403': description: Permission error response content: application/json: schema: $ref: '#/components/schemas/Error403' '429': description: >- Rate limit exceeded response. Check Retry-After header for backoff timing. Also returned (without RateLimit-* headers) when an IP is temporarily blocked after repeated failed authentication attempts. content: application/json: schema: $ref: '#/components/schemas/Error429' '500': description: Internal server error response content: application/json: schema: $ref: '#/components/schemas/Error500' x-codeSamples: - lang: JavaScript source: |- import Influship from 'influship'; const client = new Influship({ apiKey: process.env['INFLUSHIP_API_KEY'], // This is the default and can be omitted }); const response = await client.creatorEmails.lookup({ creators: [{ creator_id: '123e4567-e89b-12d3-a456-426614174000' }], }); console.log(response.data); - lang: Python source: |- import os from influship import Influship client = Influship( api_key=os.environ.get("INFLUSHIP_API_KEY"), # This is the default and can be omitted ) response = client.creator_emails.lookup( creators=[{ "creator_id": "123e4567-e89b-12d3-a456-426614174000" }], ) print(response.data) components: schemas: CreatorEmailsLookupRequest: type: object properties: creators: minItems: 1 maxItems: 100 type: array items: $ref: '#/components/schemas/CreatorEmailLookupInput' description: Creator lookups to resolve. Response rows preserve this input order. required: - creators description: Creator email lookup request CreatorEmailsLookupResponse: type: object properties: data: type: object properties: results: type: array items: $ref: '#/components/schemas/CreatorEmailsLookupResult' billing: $ref: '#/components/schemas/CreatorEmailsBilling' required: - results - billing additionalProperties: false required: - data additionalProperties: false description: Creator email lookup response Error400: $ref: '#/components/schemas/Error' description: Validation error response examples: - error: code: validation_error message: 'Invalid value for parameter ''limit'': must be between 1 and 100' param: limit request_id: 550e8400-e29b-41d4-a716-446655440000 Error401: $ref: '#/components/schemas/Error' description: Authentication error response examples: - error: code: unauthorized message: API key missing or invalid request_id: 550e8400-e29b-41d4-a716-446655440000 Error403: $ref: '#/components/schemas/Error' description: Permission error response examples: - error: code: forbidden message: Your plan does not include access to this endpoint request_id: 550e8400-e29b-41d4-a716-446655440000 Error429: $ref: '#/components/schemas/Error' description: >- Rate limit exceeded response. Check Retry-After header for backoff timing. Also returned (without RateLimit-* headers) when an IP is temporarily blocked after repeated failed authentication attempts. examples: - error: code: rate_limit_exceeded message: Rate limit exceeded (per minute) request_id: 550e8400-e29b-41d4-a716-446655440000 - error: code: rate_limit_exceeded message: Rate limit exceeded (per hour) request_id: 550e8400-e29b-41d4-a716-446655440001 - error: code: rate_limit_exceeded message: Too many failed authentication attempts. Please try again later. request_id: 550e8400-e29b-41d4-a716-446655440002 Error500: $ref: '#/components/schemas/Error' description: Internal server error response examples: - error: code: internal_error message: An unexpected error occurred. Please try again later. request_id: 550e8400-e29b-41d4-a716-446655440000 CreatorEmailLookupInput: anyOf: - $ref: '#/components/schemas/CreatorEmailLookupById' - $ref: '#/components/schemas/CreatorEmailLookupByHandle' description: Creator email lookup input by creator ID or social handle CreatorEmailsLookupResult: type: object properties: input: $ref: '#/components/schemas/CreatorEmailLookupInputOutput' creator_id: type: - string - 'null' format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ description: Resolved creator ID, or null when the input could not be resolved example: 123e4567-e89b-12d3-a456-426614174000 resolved: type: boolean description: Whether the lookup resolved to a creator profile example: true emails: type: array items: $ref: '#/components/schemas/CreatorEmailItem' description: >- API-visible emails for the resolved creator. Empty results are not billable. required: - input - creator_id - resolved - emails additionalProperties: false description: Creator email lookup result CreatorEmailsBilling: type: object properties: billable_results: type: integer minimum: 0 maximum: 9007199254740991 description: Unique resolved creators with at least one returned email example: 1 credits_charged: type: number minimum: 0 description: Preview of credits charged for this lookup example: 5 required: - billable_results - credits_charged additionalProperties: false description: Creator email lookup billing summary Error: type: object properties: error: type: object properties: code: $ref: '#/components/schemas/ErrorCode' description: Machine-readable error code message: type: string description: Human-readable error message example: Request validation failed param: description: Parameter that caused the error (if applicable) example: query type: string request_id: description: Request ID for debugging example: 550e8400-e29b-41d4-a716-446655440000 type: string details: description: Structured error context (e.g., field-level validation issues) type: object propertyNames: type: string additionalProperties: {} required: - code - message additionalProperties: false required: - error additionalProperties: false CreatorEmailLookupById: type: object properties: creator_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ description: Creator profile ID to look up directly example: 123e4567-e89b-12d3-a456-426614174000 required: - creator_id description: Creator email lookup input by creator ID CreatorEmailLookupByHandle: type: object properties: platform: $ref: '#/components/schemas/Platform' description: Social platform for handle-based lookup username: type: string minLength: 1 maxLength: 100 description: Social username for handle-based lookup example: fitness_coach_jane required: - platform - username description: Creator email lookup input by social handle CreatorEmailLookupInputOutput: anyOf: - $ref: '#/components/schemas/CreatorEmailLookupByIdOutput' - $ref: '#/components/schemas/CreatorEmailLookupByHandleOutput' description: Creator email lookup input by creator ID or social handle CreatorEmailItem: type: object properties: email: type: string minLength: 1 description: Email address as stored, preserving original casing example: hello@example.com status: $ref: '#/components/schemas/CreatorEmailStatus' confidence: type: - number - 'null' minimum: 0 maximum: 1 description: Nullable confidence score for the email example: 0.72 is_primary: type: boolean description: Whether this is the primary email for the creator example: false validated_at: type: - string - 'null' format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$ description: When the email was last validated, if known example: null first_seen_at: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$ description: When Influship first observed this email example: '2026-05-01T00:00:00Z' last_seen_at: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$ description: When Influship most recently observed this email example: '2026-05-02T00:00:00Z' required: - email - status - confidence - is_primary - validated_at - first_seen_at - last_seen_at additionalProperties: false description: API-visible creator email ErrorCode: type: string enum: - validation_error - invalid_parameter - missing_parameter - unauthorized - forbidden - payment_required - not_found - rate_limit_exceeded - quota_exceeded - internal_error - service_unavailable - database_error - seed_not_found - invalid_seeds - seed_resolution_failed - lookalike_failed - get_profiles_failed - post_analysis_failed - match_failed - scraping_failed - transcript_unavailable description: Machine-readable error code for programmatic handling example: validation_error Platform: type: string enum: - instagram description: Social media platform example: instagram CreatorEmailLookupByIdOutput: type: object properties: creator_id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ description: Creator profile ID to look up directly example: 123e4567-e89b-12d3-a456-426614174000 required: - creator_id additionalProperties: false description: Creator email lookup input by creator ID CreatorEmailLookupByHandleOutput: type: object properties: platform: $ref: '#/components/schemas/Platform' description: Social platform for handle-based lookup username: type: string minLength: 1 maxLength: 100 description: Social username for handle-based lookup example: fitness_coach_jane required: - platform - username additionalProperties: false description: Creator email lookup input by social handle CreatorEmailStatus: type: string enum: - unvalidated - valid - risky - creator_verified description: API-visible email validation status example: unvalidated securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-Key ````