> ## Documentation Index > Fetch the complete documentation index at: https://developer.instantly.ai/llms.txt > Use this file to discover all available pages before exploring further. # Create block list entry > Requires one of the following scopes: `block_list_entries:create`, `block_list_entries:all`, `all:create`, `all:all` ## OpenAPI ````yaml https://api.instantly.ai/openapi/api_v2.json post /api/v2/block-lists-entries openapi: 3.1.0 info: title: API Explorer description: >- The entire API V2 documentation is interactive and can be tested here. To the right side of every endpoint you will see a box with an example request. You can click on the "Try it" button to send a request to the server right from the docs. You will need to provide an API key by clicking the `ApiKeyAuth_token` blue text. version: 2.0.0 servers: - url: https://api.instantly.ai description: Instantly API Server security: - ApiKeyAuth: [] tags: - name: Analytics description: Endpoints related to analytics x-displayName: Analytics - name: OAuth description: >- OAuth authentication endpoints for connecting Google and Microsoft email accounts x-displayName: OAuth - name: Account description: An email account that can be used to send campaigns x-displayName: Account - name: Campaign description: A campaign that can be sent to a list of recipients x-displayName: Campaign - name: Email description: >- A campaign email, a reply, a manually sent email, or any other email that's visible in the Unibox x-displayName: Email - name: EmailVerification description: A single email verification x-displayName: Email Verification - name: LeadList description: A list used to store leads x-displayName: Lead List - name: InboxPlacementTest description: An inbox placement test x-displayName: Inbox Placement Test - name: InboxPlacementAnalytics description: Analytics data for individual emails in inbox placement tests x-displayName: Inbox Placement Analytics - name: InboxPlacementBlacklist&SpamAssassinReport description: Report data for an inbox placement test x-displayName: Inbox Placement Blacklist & SpamAssassin Report - name: APIKey description: API Key x-displayName: API Key - name: AccountCampaignMapping description: Account Campaign Mapping x-displayName: Account Campaign Mapping - name: Lead description: A lead entity representing an individual lead x-displayName: Lead - name: BackgroundJob description: A background job that can be used to perform long-running tasks x-displayName: Background Job - name: CustomTag description: >- A custom tag for organizing and categorizing accounts and campaigns. You can use them as filters in apis that list accounts and campaigns. x-displayName: Custom Tag - name: CustomTagMapping description: >- This entity represents a tag being assigned to a specific campaign or email account. When an email account is assigned a tag, a new custom tag mapping entry is created, which connects the tag (`tag_id` field) with the email account (`resource_id` field). You can use it to see which tag si connected to which resource. x-displayName: Custom Tag Mapping - name: BlockListEntry description: A blocked email or domain x-displayName: Block List Entry - name: LeadLabel description: A custom label for categorizing and managing leads x-displayName: Lead Label - name: Workspace description: A workspace entity representing a workspace x-displayName: Workspace - name: SuperSearchEnrichment description: >- An enrichment can take different forms, such as email enrichment or LinkedIn enrichment. Leads may be imported from SuperSearch using the dedicated endpoint, or enriched directly within a list or campaign by attaching an enrichment to it. x-displayName: SuperSearch Enrichment - name: WorkspaceGroupMember description: >- A member of a workspace group. You can use the endpoints within this entity to manage the members of a workspace group. x-displayName: Workspace Group Member - name: WorkspaceMember description: A member of a workspace with associated user details x-displayName: Workspace Member - name: CampaignSubsequence description: A subsequence entity representing a follow-up sequence x-displayName: Campaign Subsequence - name: AuditLog description: Audit log records for tracking system activities x-displayName: Audit Log - name: Webhook description: A webhook subscription for receiving event notifications x-displayName: Webhook - name: WebhookEvent description: A webhook event that was sent or attempted to be sent x-displayName: Webhook Event - name: DFYEmailAccountOrder description: A Done-For-You email account order x-displayName: DFY Email Account Order - name: CustomPromptTemplate description: Custom prompt templates for creating custom prompts x-displayName: Custom Prompt Template - name: SalesFlow description: >- Manages how sales users view and interact with campaign and lead lists within the sales flow. x-displayName: Sales Flow - name: EmailTemplate description: A campaign email template x-displayName: Email Template - name: WorkspaceBilling description: Workspace Billing x-displayName: Workspace Billing - name: CRMActions description: CRM related actions x-displayName: CRM Actions paths: /api/v2/block-lists-entries: post: tags: - BlockListEntry summary: Create block list entry description: >- Requires one of the following scopes: `block_list_entries:create`, `block_list_entries:all`, `all:create`, `all:all` operationId: createBlockListEntry requestBody: content: application/json: schema: title: CreateBlock List Entry description: The Block List Entry to create type: object properties: bl_value: type: string description: The email or domain to block example: example.com required: - bl_value additionalProperties: false required: true description: The Block List Entry to create responses: '200': description: The Block List Entry content: application/json: schema: $ref: '#/components/schemas/def-15' '400': description: >- Invalid request body (e.g. missing required fields, or invalid field values) content: application/json: schema: type: object properties: statusCode: type: number enum: - 400 example: 400 error: type: string enum: - Bad Request example: Bad Request message: type: string example: body must have required property 'name' required: - statusCode - error - message '401': description: >- This request is unauthorized (either the Authorization header is missing or invalid, or the API key has been revoked) content: application/json: schema: type: object properties: statusCode: type: number enum: - 401 example: 401 error: type: string enum: - Unauthorized example: Unauthorized message: type: string example: Missing Authorization header required: - statusCode - error - message '402': description: >- This request cannot be fulfilled because the workspace does not have an active paid plan content: application/json: schema: type: object properties: statusCode: type: number enum: - 402 example: 402 error: type: string enum: - Payment Required example: Payment Required message: type: string example: Workspace does not have an active paid plan required: - statusCode - error - message '404': description: The requested resource was not found content: application/json: schema: type: object properties: statusCode: type: number enum: - 404 example: 404 error: type: string enum: - Not Found example: Not Found message: type: string example: Resource not found required: - statusCode - error - message '429': description: >- You have exceeded the rate limit. Please check the rate limit docs for more information. content: application/json: schema: type: object properties: statusCode: type: number enum: - 429 example: 429 error: type: string enum: - Too Many Requests example: Too Many Requests message: type: string example: Rate limit exceeded required: - statusCode - error - message components: schemas: def-15: title: Block List Entry description: A blocked email or domain x-tags: - Schemas - BlockListEntry type: object properties: id: type: string description: Unique identifier for the block list entry readOnly: true format: uuid example: 019e18e2-792a-7b6e-9c02-966ca18bab0a timestamp_created: type: string description: Timestamp when the block list entry was created readOnly: true format: date-time example: '2026-05-11T21:12:35.882Z' organization_id: type: string description: Organization ID that owns this block list entry readOnly: true format: uuid example: 019e18e2-792a-7b6e-9c02-966d622b0cf7 bl_value: type: string description: The email or domain to block example: example.com is_domain: type: boolean description: Whether this entry blocks an entire domain readOnly: true example: true required: - id - timestamp_created - organization_id - bl_value - is_domain additionalProperties: false securitySchemes: ApiKeyAuth: type: http scheme: bearer ````