> ## Documentation Index > Fetch the complete documentation index at: https://docs.gtm-api.com/llms.txt > Use this file to discover all available pages before exploring further. # Get my latest Sales Navigator messages > Sales Navigator variant of get_my_latest_linkedin_messages: always-fresh head read of ONE SN thread's messages (§5.8 refresh-then-return). Requires a messenger_type='sales_navigator' conversation; same hard-429 guards. Contract: - MCP tool `get_my_latest_linkedin_messages_sales_nav`, registry package `mcp.linkedin/linkedin_messages`, mount `linkedin.messaging`. - Operation `action`, response envelope `search`. - Flags: none. ## OpenAPI ````yaml /api-reference/linkedin/openapi.yaml post /api/linkedin-messages/get-my-latest-sales-nav openapi: 3.0.3 info: title: 'GTM API public contract: gtm.service.linkedin' description: >- Connected LinkedIn accounts and everything driven through them: account health and smart limits, conversations and messages, the connection graph, outbound posting, scraping, profile and company enrichment, and the antidetect browsers that execute it all. GENERATED. This document is projected from the Zod MCP tool registry in `product/mcp/gtm.mcp` (one tool per public endpoint, 1:1). Do not edit it by hand; edit the tool definition and regenerate with `pnpm openapi:public`. Surface: the public `/api` contract of `gtm.service.linkedin`, 150 operations. Internal (`/internal`) and health endpoints are deliberately absent; the code-faithful spec that documents those lives in `product/openapi/gtm.openapi.tech`. Conventions: - Auth is a bearer JWT, optionally narrowed by the `Team-SID` header. - Every success body is an MCP envelope: `success: true` plus one typed `operation` shape (`search`, `get`, `create`, `update`, `delete`, `metrics`, `group_by`, `action`), and a `meta` block with `trace_id` for support. - Every failure is the same `McpError` envelope with a code from a fixed 16-code taxonomy, so a client maps errors once. - Lists page with `page_size` (0 to 500, default 50) plus an opaque forward `cursor`; `page_size: 0` returns counts only. - On `GET` and `DELETE`, object-valued query parameters (`filter`, `sort`) travel as JSON text and array-valued ones repeat as `name[]=value`. - The MCP-only `_meta` field (usage analytics) never reaches the backend and is not part of this contract. version: '1.0' contact: name: GTM API url: https://gtm-api.com email: support@gtm-api.com license: name: Proprietary url: https://gtm-api.com/license servers: - url: https://app.gtm-api.com/linkedin/v4 description: Production, through the app.gtm-api.com gateway - url: http://localhost:8020 description: Local Docker (gtm_linkedin_nginx_dev) security: - BearerJwt: [] TeamSid: [] tags: - name: antidetect_browser_logs description: >- Registry package `mcp.linkedin/antidetect_browser_logs`, served on MCP mount `linkedin.browsers`. - name: antidetect_browser_proxies description: >- Registry package `mcp.linkedin/antidetect_browser_proxies`, served on MCP mount `linkedin.browsers`. - name: antidetect_browsers description: >- Registry package `mcp.linkedin/antidetect_browsers`, served on MCP mount `linkedin.browsers`. - name: cloud_browser_sessions description: >- Registry package `mcp.linkedin/cloud_browser_sessions`, served on MCP mount `linkedin.browsers`. - name: cloud_browsers description: >- Registry package `mcp.linkedin/cloud_browsers`, served on MCP mount `linkedin.browsers`. - name: data_requests description: >- Registry package `mcp.linkedin/data_requests`, served on MCP mount `linkedin.data`. - name: linkedin_account_activity_log description: >- Registry package `mcp.linkedin/linkedin_account_activity_log`, served on MCP mount `linkedin.account-monitor`. - name: linkedin_account_block_log description: >- Registry package `mcp.linkedin/linkedin_account_block_log`, served on MCP mount `linkedin.account-monitor`. - name: linkedin_account_quota_hits description: >- Registry package `mcp.linkedin/linkedin_account_quota_hits`, served on MCP mount `linkedin.account-monitor`. - name: linkedin_account_smart_limits description: >- Registry package `mcp.linkedin/linkedin_account_smart_limits`, served on MCP mount `linkedin.accounts`. - name: linkedin_account_snapshots description: >- Registry package `mcp.linkedin/linkedin_account_snapshots`, served on MCP mount `linkedin.account-monitor`. - name: linkedin_account_sync_runs description: >- Registry package `mcp.linkedin/linkedin_account_sync_runs`, served on MCP mount `linkedin.account-monitor`. - name: linkedin_accounts description: >- Registry package `mcp.linkedin/linkedin_accounts`, served on MCP mount `linkedin.accounts`. - name: linkedin_auto_scrape_results description: >- Registry package `mcp.linkedin/linkedin_auto_scrape_results`, served on MCP mount `linkedin.auto-scrapes`. - name: linkedin_auto_scrape_runs description: >- Registry package `mcp.linkedin/linkedin_auto_scrape_runs`, served on MCP mount `linkedin.auto-scrapes`. - name: linkedin_auto_scrapes description: >- Registry package `mcp.linkedin/linkedin_auto_scrapes`, served on MCP mount `linkedin.auto-scrapes`. - name: linkedin_benchmarks description: >- Registry package `mcp.linkedin/linkedin_benchmarks`, served on MCP mount `linkedin.account-monitor`. - name: linkedin_connection_invitations description: >- Registry package `mcp.linkedin/linkedin_connection_invitations`, served on MCP mount `linkedin.network`. - name: linkedin_connection_requests description: >- Registry package `mcp.linkedin/linkedin_connection_requests`, served on MCP mount `linkedin.network`. - name: linkedin_connections description: >- Registry package `mcp.linkedin/linkedin_connections`, served on MCP mount `linkedin.network`. - name: linkedin_conversations description: >- Registry package `mcp.linkedin/linkedin_conversations`, served on MCP mount `linkedin.messaging`. - name: linkedin_custom_requests description: >- Registry package `mcp.linkedin/linkedin_custom_requests`, served on MCP mount `linkedin.platform`. - name: linkedin_enrichment description: >- Registry package `mcp.linkedin/linkedin_enrichment`, served on MCP mount `linkedin.enrichment`. - name: linkedin_followers description: >- Registry package `mcp.linkedin/linkedin_followers`, served on MCP mount `linkedin.network`. - name: linkedin_messages description: >- Registry package `mcp.linkedin/linkedin_messages`, served on MCP mount `linkedin.messaging`. - name: linkedin_posting description: >- Registry package `mcp.linkedin/linkedin_posting`, served on MCP mount `linkedin.content`. - name: linkedin_scraping description: >- Registry package `mcp.linkedin/linkedin_scraping`, served on MCP mount `linkedin.scraping`. paths: /api/linkedin-messages/get-my-latest-sales-nav: post: tags: - linkedin_messages summary: Get my latest Sales Navigator messages description: >- Sales Navigator variant of get_my_latest_linkedin_messages: always-fresh head read of ONE SN thread's messages (§5.8 refresh-then-return). Requires a messenger_type='sales_navigator' conversation; same hard-429 guards. Contract: - MCP tool `get_my_latest_linkedin_messages_sales_nav`, registry package `mcp.linkedin/linkedin_messages`, mount `linkedin.messaging`. - Operation `action`, response envelope `search`. - Flags: none. operationId: get_my_latest_linkedin_messages_sales_nav requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/GetMyLatestLinkedinMessagesSalesNavRequest' responses: '200': description: '`search` success envelope.' content: application/json: schema: $ref: >- #/components/schemas/GetMyLatestLinkedinMessagesSalesNavResponse 4XX: $ref: '#/components/responses/McpClientError' 5XX: $ref: '#/components/responses/McpServerError' components: schemas: GetMyLatestLinkedinMessagesSalesNavRequest: type: object description: Request body of `get_my_latest_linkedin_messages_sales_nav`. properties: linkedin_conversation_sid: type: string minLength: 18 maxLength: 18 pattern: ^ln_cv_ description: REQUIRED; must be a messenger_type='sales_navigator' thread. page_size: type: integer minimum: 1 maximum: 100 description: N returned, 1..100, default 50. cursor: type: string nullable: true description: Opaque; pagination over the refreshed tail. required: - linkedin_conversation_sid GetMyLatestLinkedinMessagesSalesNavResponse: type: object properties: success: type: boolean enum: - true operation: type: string enum: - search items: type: array items: type: object properties: item: type: object properties: sid: type: string team_sid: type: string linkedin_account_sid: type: string linkedin_conversation_sid: type: string messenger_type: type: string enum: - linkedin - sales_navigator description: >- Messenger surface: basic LinkedIn messenger or Sales Navigator. linkedin_type: type: string enum: - message - inmail - connection_note description: >- Channel sub-kind: regular DM / premium InMail / system-seeded connection note. type: type: string enum: - inbox - outbox description: 'Direction relative to our account: received / sent.' automation: type: string enum: - auto - manual - connect - synced description: Writer provenance. ln_member_id: type: string ln_id: type: string nullable: true sn_id: type: string nullable: true nickname: type: string nullable: true subject: type: string nullable: true text: type: string attachments: type: array items: type: object properties: id: type: string urn: type: string description: >- digitalmediaAsset URN; the attachment_urn the download tools take. name: type: string content_type: type: string content_url: type: string file_byte_size: type: number path: type: string description: >- Outbound rows only: the https:// URL we uploaded from. size: type: number description: Outbound rows only. reactions: type: array nullable: true items: type: object properties: emoji: type: string count: type: number is_viewer_reacted: type: boolean first_reacted_at: type: string nullable: true required: - emoji - count - is_viewer_reacted - first_reacted_at message_hash: type: string sent_at: type: string custom_content: type: object nullable: true additionalProperties: {} created_at: type: string updated_at: type: string deleted_at: type: string nullable: true required: - sid - team_sid - linkedin_account_sid - linkedin_conversation_sid - messenger_type - linkedin_type - type - automation - ln_member_id - ln_id - sn_id - nickname - subject - text - attachments - reactions - message_hash - sent_at - custom_content - created_at - updated_at - deleted_at included: type: object additionalProperties: {} required: - item - included pagination: type: object properties: next_cursor: type: string nullable: true has_more: type: boolean total_count: type: integer nullable: true required: - next_cursor - has_more - total_count applied_filters: type: object additionalProperties: {} includes: type: array items: type: string meta: type: object properties: trace_id: type: string description: UUID v7; same 128-bit value as the X-Trace-Id header. span_id: type: string pattern: ^[0-9a-f]{16}$ description: 16 hex chars, root span of this request. timestamp: type: string description: ISO 8601 UTC (Y-m-dTH:i:sZ), response time. duration_ms: type: integer minimum: 0 description: Server-side wall clock. debug_url: type: string description: Deep link to the post-call analysis UI. required: - trace_id - span_id - timestamp - duration_ms - debug_url counts: type: object properties: total_count: type: number inbox_count: type: number outbox_count: type: number message_count: type: number inmail_count: type: number connection_note_count: type: number with_attachments_count: type: number groups: type: object additionalProperties: {} required: - total_count - inbox_count - outbox_count - message_count - inmail_count - connection_note_count - with_attachments_count - groups refresh: type: object properties: performed: type: boolean pages_fetched: type: number items_seen: type: number items_upserted: type: number stop_reason: type: string nullable: true required: - performed - pages_fetched - items_seen - items_upserted - stop_reason required: - success - operation - items - pagination - applied_filters - includes - meta - refresh McpError: type: object properties: success: type: boolean enum: - false error: type: object properties: code: type: string enum: - validation_failed - nothing_to_update - not_found - relation_not_found - invalid_transition - limit_exceeded - payment_required - duplicate_rejected - conflict - delete_blocked - unauthorized - forbidden - rate_limited - internal_error - service_unavailable - not_implemented message: type: string recoverable: type: boolean suggestion: type: string field_errors: type: object additionalProperties: type: array items: anyOf: - type: string - type: object properties: rule: type: string message: type: string required: - rule - message blockers: type: array items: type: object properties: type: type: string description: >- Machine-readable blocker type (active_flow, pending_tasks, …). severity: type: string enum: - hard - soft description: >- hard = external action required; soft = acknowledge is enough. description: type: string entity_sid: type: string nullable: true count: type: integer resolution: type: string description: 'Hard: tool name to call. Soft: code for acknowledge[].' resolution_hint: type: string required: - type - severity - description - entity_sid - resolution - resolution_hint context: type: object additionalProperties: {} required: - code - message - recoverable meta: type: object properties: trace_id: type: string description: UUID v7; same 128-bit value as the X-Trace-Id header. span_id: type: string pattern: ^[0-9a-f]{16}$ description: 16 hex chars, root span of this request. timestamp: type: string description: ISO 8601 UTC (Y-m-dTH:i:sZ), response time. duration_ms: type: integer minimum: 0 description: Server-side wall clock. debug_url: type: string description: Deep link to the post-call analysis UI. required: - trace_id - span_id - timestamp - duration_ms - debug_url required: - success - error responses: McpClientError: description: >- MCP error envelope. `error.code` is one of validation_failed, nothing_to_update, not_found, relation_not_found, invalid_transition, limit_exceeded, payment_required, duplicate_rejected, conflict, delete_blocked, unauthorized, forbidden, rate_limited, not_implemented. content: application/json: schema: $ref: '#/components/schemas/McpError' McpServerError: description: >- MCP error envelope with `error.code` internal_error or service_unavailable. content: application/json: schema: $ref: '#/components/schemas/McpError' securitySchemes: BearerJwt: type: http scheme: bearer bearerFormat: JWT description: >- Access token issued by gtm.service.id. Its `access_identity` claim carries `team_sid`, `actor_sid` and `actor_type`, and that team scope is authoritative. TeamSid: type: apiKey in: header name: Team-SID description: >- Team scope for tokens that do not carry one. Ignored when the token already names a team. ````