> ## Documentation Index > Fetch the complete documentation index at: https://docs.getbifrost.ai/llms.txt > Use this file to discover all available pages before exploring further. # Shift served skill version > Changes the served version for a skill without deleting newer versions. ## OpenAPI ````yaml /openapi/openapi.json post /api/skills/{id}/shift-version openapi: 3.1.0 info: title: Bifrost API description: > Bifrost HTTP Transport API for AI model inference and gateway management. This API provides a unified interface for interacting with multiple AI providers including OpenAI, Anthropic, Bedrock, Gemini, and more through a single API, along with comprehensive management APIs for configuring and monitoring the gateway. ## API Structure ### Unified Inference API (`/v1/*`) The primary API using Bifrost's unified format. Model parameters use the format `provider/model` (e.g., `openai/gpt-4`, `anthropic/claude-3-opus`). ### Async Inference API (`/v1/async/*`) Submit inference requests for asynchronous execution. Returns a job ID immediately and allows polling for results. Supports all inference types except batches, files, and containers. ### Provider Integration APIs Native provider-format APIs for drop-in compatibility: - `/openai/*` - OpenAI-compatible API - `/anthropic/*` - Anthropic-compatible API - `/genai/*` - Google GenAI (Gemini) compatible API - `/bedrock/*` - AWS Bedrock compatible API - `/cohere/*` - Cohere compatible API ### Framework Integration APIs Multi-provider proxy endpoints for AI frameworks: - `/litellm/*` - LiteLLM proxy with all provider formats - `/langchain/*` - LangChain compatible endpoints - `/pydanticai/*` - PydanticAI compatible endpoints ### Management APIs (`/api/*`) APIs for managing and monitoring the Bifrost gateway: - `/api/config` - Configuration management - `/api/providers` - Provider and API key management - `/api/plugins` - Plugin management - `/api/governance/*` - Virtual keys, teams, customers, budgets, rate limits, routing rules, and pricing overrides - `/api/logs` - Log search and analytics - `/api/mcp/*` - MCP (Model Context Protocol) client management - `/api/session/*` - Authentication and session management - `/api/cache/*` - Cache management - `/health` - Health check endpoint ## Fallbacks Requests can include fallback models that will be tried if the primary model fails. version: 1.0.0 contact: name: Contact Us url: https://getmaxim.ai/bifrost license: name: Apache 2.0 url: https://opensource.org/licenses/Apache-2.0 servers: - url: '{baseUrl}' description: Your Bifrost instance variables: baseUrl: default: http://localhost:8080 description: Base URL of your Bifrost instance (e.g. https://bifrost.mycompany.com) security: - BearerAuth: [] - BasicAuth: [] - ApiKeyAuth: [] tags: - name: Models description: Model listing and information - name: Chat Completions description: Chat-based text generation - name: Text Completions description: Text completion generation - name: Responses description: OpenAI Responses API compatible endpoints - name: OCR description: Optical character recognition for documents and images - name: Rerank description: Document reranking by relevance to a query - name: Embeddings description: Text embedding generation - name: Images description: Image generations, editing, and variations - name: Videos description: Video generation and management - name: Audio description: Speech synthesis and transcription - name: Count Tokens description: Token counting utilities - name: Batch description: Batch processing operations - name: Files description: File management operations - name: Containers description: Container management operations - name: Async Jobs description: Asynchronous job submission and retrieval endpoints - name: Realtime description: Realtime WebSocket and WebRTC endpoints - name: OpenAI Integration description: OpenAI-compatible API endpoints (/openai/*) - name: Azure Integration description: Azure OpenAI integration endpoints - name: Anthropic Integration description: Anthropic-compatible API endpoints (/anthropic/*) - name: GenAI Integration description: Google GenAI (Gemini) compatible API endpoints (/genai/*) - name: Bedrock Integration description: AWS Bedrock compatible API endpoints (/bedrock/*) - name: Cohere Integration description: Cohere compatible API endpoints (/cohere/*) - name: LiteLLM Integration description: LiteLLM proxy endpoints with multi-provider support (/litellm/*) - name: LangChain Integration description: LangChain compatible endpoints with multi-provider support (/langchain/*) - name: PydanticAI Integration description: >- PydanticAI compatible endpoints with multi-provider support (/pydanticai/*) - name: Health description: Health check endpoints - name: Configuration description: Configuration management endpoints - name: Session description: Session and authentication endpoints - name: Providers description: Provider management endpoints - name: Plugins description: Plugin management endpoints - name: MCP description: Model Context Protocol endpoints - name: Governance description: Virtual keys, teams, and customers management - name: Logging description: Log search and management endpoints - name: Cache description: Cache management endpoints - name: Vault description: Vault secret management endpoints - name: Skills description: Skills Repository management, marketplace, and download endpoints - name: Audit Logs description: >- CADF-compliant audit log search, export, and signature verification endpoints paths: /api/skills/{id}/shift-version: post: tags: - Skills summary: Shift served skill version description: Changes the served version for a skill without deleting newer versions. operationId: shiftSkillVersion parameters: - name: id in: path required: true description: Skill ID schema: type: string requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ShiftSkillVersionRequest' responses: '200': description: Served version shifted successfully content: application/json: schema: $ref: '#/components/schemas/SkillResponse' '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/BifrostError' '404': description: Resource not found content: application/json: schema: $ref: '#/components/schemas/BifrostError' '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/BifrostError' security: - ManagementBearerAuth: [] components: schemas: ShiftSkillVersionRequest: type: object required: - version properties: version: type: string example: 1.0.0 SkillResponse: type: object properties: skill: $ref: '#/components/schemas/Skill' BifrostError: type: object description: Error response from Bifrost properties: event_id: type: string type: type: string is_bifrost_error: type: boolean status_code: type: integer error: $ref: '#/components/schemas/ErrorField' extra_fields: $ref: '#/components/schemas/BifrostErrorExtraFields' Skill: type: object description: Skill repository entry and currently served version metadata. properties: id: type: string name: type: string example: review-migrations description: type: string example: Reviews database migration safety and rollback behavior. license: type: string nullable: true example: MIT compatibility: type: string nullable: true example: Claude Code, Codex metadata: type: object additionalProperties: type: string description: Metadata emitted under the `metadata` frontmatter key. extra_frontmatter: type: object additionalProperties: true description: Additional top-level SKILL.md frontmatter fields. allowed_tools: type: string nullable: true description: Tool guidance emitted in SKILL.md frontmatter. skill_md_body: type: string description: Markdown body of the composed SKILL.md. latest_version: type: string description: Currently served version. example: 1.0.0 created_by: type: string nullable: true created_at: type: string format: date-time updated_at: type: string format: date-time files: type: array description: Files attached to the currently served version. items: $ref: '#/components/schemas/SkillFile' file_count: type: integer format: int64 description: Number of files in the currently served version. highest_version: type: string description: >- Highest created SemVer for validation, even if an older version is served. example: 1.2.0 ErrorField: type: object properties: type: type: string code: type: string message: type: string param: type: string event_id: type: string BifrostErrorExtraFields: type: object properties: provider: $ref: '#/components/schemas/ModelProvider' model_requested: type: string request_type: type: string SkillFile: allOf: - $ref: '#/components/schemas/SkillFileEntry' - type: object description: Persisted file attached to a skill version. properties: id: type: string description: File row ID. skill_version_id: type: string description: Version snapshot ID this file belongs to. file_size_bytes: type: integer format: int64 description: File size in bytes when known. created_at: type: string format: date-time updated_at: type: string format: date-time ModelProvider: type: string description: AI model provider identifier enum: - openai - azure - anthropic - bedrock - cohere - vertex - vllm - mistral - ollama - groq - sgl - parasail - perplexity - replicate - cerebras - deepseek - gemini - openrouter - elevenlabs - huggingface - nebius - xai - runway - fireworks SkillFileEntry: type: object description: File entry used when creating or updating a skill version. required: - path - source_type - mime_type properties: path: type: string description: Relative file path inside the skill package. example: references/style-guide.md source_type: $ref: '#/components/schemas/SkillSourceType' content: type: string description: Inline file content for `text` source files. source_url: type: string format: uri description: HTTP or HTTPS URL for `url` source files. dataurl: type: string description: Data URL payload for `dataurl` source files. example: data:text/plain;base64,SGVsbG8= upload_id: type: string description: Upload identifier returned by the multipart upload endpoint. storage_key: type: string description: Object-storage key for an uploaded or stored file. blob_id: type: string description: Database blob ID used when object storage is not configured. mime_type: type: string description: MIME type for the file. example: text/markdown SkillSourceType: type: string description: Source backing for an attached skill file. enum: - url - dataurl - text - upload securitySchemes: BearerAuth: type: http scheme: bearer description: > Bearer token authentication. Use your provider API key or Bifrost authentication token. Virtual keys (prefixed with `sk-bf-`) can also be passed here. BasicAuth: type: http scheme: basic description: | Basic authentication using username and password. ApiKeyAuth: type: apiKey in: header name: x-api-key description: | API key authentication via the `x-api-key` header. Virtual keys (prefixed with `sk-bf-`) can also be passed here. ManagementBearerAuth: type: http scheme: bearer description: > Management API authentication for `/api/*` endpoints. Use the `Authorization` header with `Bearer `. Virtual keys, dashboard/user/session tokens, and `x-api-key` headers are not supported on management APIs. ````