{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"awesome-ocireg","slug":"ocireg","name":"ocireg","type":"mcp","url":"https://github.com/StacklokLabs/ocireg-mcp","page_url":"https://unfragile.ai/ocireg","categories":["mcp-servers"],"tags":[],"pricing":{"model":"open_source","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"awesome-ocireg__cap_0","uri":"capability://tool.use.integration.oci.registry.image.metadata.retrieval.via.mcp.protocol","name":"oci registry image metadata retrieval via mcp protocol","description":"Exposes OCI (Open Container Initiative) registry operations through the Model Context Protocol (MCP) using Server-Sent Events (SSE) transport. Implements a standardized tool interface that allows LLM applications to query container image metadata (manifests, config, layers) by translating MCP tool calls into authenticated OCI registry API requests, handling content negotiation for different manifest formats (Docker v2, OCI Image Spec).","intents":["Query container image metadata and configuration from any OCI-compatible registry without writing custom registry client code","Integrate container image inspection into LLM-powered DevOps or security analysis workflows","Retrieve image layer information and digest hashes for supply chain verification","Inspect image configuration including environment variables, entrypoints, and labels programmatically"],"best_for":["LLM application developers building container security or DevOps automation tools","Teams integrating container image analysis into AI-powered CI/CD pipelines","Security researchers analyzing container images at scale via LLM agents"],"limitations":["SSE transport limits concurrent requests compared to HTTP/2 multiplexing; suitable for sequential or low-concurrency workloads","No built-in caching of registry responses; repeated queries to same image incur full API latency","Authentication limited to registry credentials passed at MCP server initialization; no dynamic credential rotation","Large image manifests (>10MB) may exceed MCP message size limits depending on client implementation"],"requires":["MCP-compatible client (Claude Desktop, custom LLM application with MCP support)","Network access to target OCI registry (Docker Hub, ECR, GCR, Quay, private registries)","Registry credentials (username/password, OAuth token, or service account) if accessing private registries","Python 3.8+ (inferred from MCP server implementation patterns)"],"input_types":["text (image reference in format: registry/repository:tag or registry/repository@sha256:digest)","structured data (registry configuration with endpoint URL and credentials)"],"output_types":["structured data (JSON manifests, image config, layer metadata)","text (formatted image information, digest hashes, tag lists)"],"categories":["tool-use-integration","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-ocireg__cap_1","uri":"capability://search.retrieval.container.image.tag.enumeration.and.filtering","name":"container image tag enumeration and filtering","description":"Implements tag listing functionality that queries OCI registry tag endpoints and returns available image versions for a given repository. Handles pagination for registries with large tag counts and supports filtering/sorting by tag name, creation date, or digest. Works with registry-specific tag listing APIs (Docker Registry V2 _catalog endpoint, Quay API, ECR DescribeImages) abstracted behind a unified MCP tool interface.","intents":["List all available versions of a container image in a registry to find latest stable or specific release tags","Discover image tags matching patterns (e.g., all v1.* releases) for version selection in deployment workflows","Identify stale or deprecated image tags for cleanup or security scanning","Enumerate tags across multiple registries to compare image availability"],"best_for":["DevOps engineers building LLM-powered image selection or version management tools","Container security teams scanning all image versions in a registry for vulnerabilities","Release automation systems that need to query available image tags programmatically"],"limitations":["Pagination handling depends on registry implementation; some registries (Docker Hub) have rate limits on tag listing (~100 requests/hour for unauthenticated access)","Tag metadata (creation date, size) not uniformly available across all registry types; some registries only return tag names","No built-in tag filtering or regex support; filtering must be done client-side after retrieving full tag list","Large repositories (>10k tags) may require multiple paginated requests, increasing latency"],"requires":["MCP client with tool-calling support","Network access to OCI registry with tag listing API enabled","Registry credentials if repository is private"],"input_types":["text (repository reference: registry/repository)"],"output_types":["structured data (JSON array of tag objects with name, digest, created timestamp)","text (newline-delimited tag list)"],"categories":["search-retrieval","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-ocireg__cap_2","uri":"capability://data.processing.analysis.image.manifest.and.layer.inspection.with.content.negotiation","name":"image manifest and layer inspection with content negotiation","description":"Retrieves and parses container image manifests (Docker Image Manifest V2 or OCI Image Manifest) and associated layer information by negotiating content types with the registry. Handles manifest list resolution (multi-arch images) to select the appropriate platform-specific manifest, extracts layer digests and sizes, and provides access to image configuration blobs. Implements proper HTTP Accept header negotiation to request specific manifest formats from registries.","intents":["Inspect image layers and their digests for supply chain verification and SBOM generation","Resolve multi-architecture images to platform-specific manifests for target deployment environments","Extract image configuration (CMD, ENTRYPOINT, ENV, WORKDIR) for security analysis or documentation","Verify image integrity by comparing manifest digests with expected values"],"best_for":["Container security and compliance teams analyzing image composition and provenance","SBOM (Software Bill of Materials) generation tools that need layer-level image metadata","Multi-architecture deployment systems that need to select correct image variant for target platform"],"limitations":["Manifest list resolution requires additional registry requests; multi-arch image inspection incurs 2-3x latency vs single-arch","Layer blob content not retrieved by default; only digest and size metadata available without additional requests","Image configuration parsing limited to standard OCI spec fields; custom labels or annotations may not be fully exposed","Manifest format negotiation may fail on older or non-compliant registries that don't support Accept headers"],"requires":["MCP client","Network access to OCI registry","Registry credentials for private images"],"input_types":["text (image reference with optional platform specifier: registry/repo:tag@linux/amd64)"],"output_types":["structured data (JSON manifest object, layer array with digests/sizes, image config)","text (formatted layer information, platform details)"],"categories":["data-processing-analysis","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-ocireg__cap_3","uri":"capability://tool.use.integration.authenticated.registry.access.with.credential.management","name":"authenticated registry access with credential management","description":"Manages authentication to OCI registries through MCP server configuration, supporting multiple credential types (basic auth, OAuth tokens, service accounts) and registry-specific authentication schemes. Implements token caching and refresh logic to minimize authentication overhead for repeated registry requests. Credentials are configured at MCP server startup and transparently applied to all registry API calls without exposing them to the LLM client.","intents":["Access private container registries (ECR, GCR, Quay, private Docker registries) from LLM applications without embedding credentials in prompts","Manage authentication across multiple registries with different credential types in a single MCP server instance","Securely handle registry credentials without passing them through LLM context or logs"],"best_for":["Enterprise teams with private container registries requiring secure credential isolation","Multi-registry environments (Docker Hub + ECR + GCR) needing centralized authentication","Security-conscious deployments where credentials must not reach LLM models"],"limitations":["Credentials stored in MCP server configuration; no dynamic credential rotation without server restart","No support for temporary/time-limited credentials (STS tokens) with automatic refresh","Authentication errors not exposed to LLM client; failed requests may appear as generic registry errors","Single credential set per registry; no per-repository authentication or fine-grained access control"],"requires":["Registry credentials (username/password, OAuth token, or service account key)","MCP server configuration file or environment variables for credential storage","Network access to registry authentication endpoints (Docker Auth Service, OAuth provider)"],"input_types":["structured data (registry configuration with endpoint URL and credential type)"],"output_types":["structured data (authentication tokens, session metadata)"],"categories":["tool-use-integration","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-ocireg__cap_4","uri":"capability://tool.use.integration.mcp.tool.schema.generation.and.registry.integration","name":"mcp tool schema generation and registry integration","description":"Generates standardized MCP tool schemas that expose OCI registry operations as callable tools for LLM applications. Implements the MCP tool definition format (JSON schema for inputs, description, name) and registers tools with the MCP server's tool registry. Handles tool invocation routing, parameter validation against schemas, and error handling for invalid tool calls. Supports dynamic tool discovery so LLM clients can query available registry operations.","intents":["Enable LLM applications to discover and call OCI registry operations through standard MCP tool interface","Provide structured tool schemas that guide LLM models on how to invoke registry operations with correct parameters","Validate tool parameters before executing registry API calls to prevent malformed requests"],"best_for":["LLM application developers integrating container registry access into multi-tool agent systems","Teams building Claude plugins or other MCP-based tools that need registry interaction","Developers creating custom LLM agents with container image inspection capabilities"],"limitations":["Tool schema generation is static; changes to registry operations require MCP server restart","No support for tool versioning; breaking changes to tool schemas may break existing LLM applications","Parameter validation limited to JSON schema constraints; complex validation logic must be implemented in tool handlers","Tool discovery requires MCP client to explicitly request tool list; no automatic tool advertisement"],"requires":["MCP-compatible client with tool-calling support","MCP server with tool registry implementation"],"input_types":["structured data (tool schema definitions, parameter objects)"],"output_types":["structured data (tool list with schemas, tool execution results)"],"categories":["tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-ocireg__cap_5","uri":"capability://tool.use.integration.sse.based.streaming.response.transport.for.registry.data","name":"sse-based streaming response transport for registry data","description":"Implements Server-Sent Events (SSE) as the transport mechanism for MCP protocol communication, allowing the registry MCP server to stream responses back to LLM clients over HTTP. Handles SSE connection lifecycle (connection establishment, keep-alive, graceful closure), message framing, and error propagation through SSE event streams. Enables real-time streaming of large registry responses (manifest lists, tag enumerations) without buffering entire responses in memory.","intents":["Stream large registry responses (tag lists, manifest data) to LLM clients without blocking on full response buffering","Maintain persistent connections to MCP server for multiple sequential registry queries","Handle network interruptions gracefully with SSE reconnection semantics"],"best_for":["LLM applications making multiple sequential registry queries that benefit from persistent connections","Scenarios with large registry responses (>1MB) where streaming reduces memory overhead","Environments where HTTP/2 multiplexing is not available or not preferred"],"limitations":["SSE is unidirectional (server-to-client only); client requests must use separate HTTP channels, adding complexity","No built-in multiplexing; concurrent requests require multiple SSE connections, increasing resource usage","SSE connections are subject to HTTP timeout policies; long-lived connections may be terminated by proxies or load balancers","Message size limits depend on client implementation; very large individual messages may be rejected"],"requires":["HTTP client with SSE support (most modern browsers and HTTP libraries)","Network path that allows persistent HTTP connections (no aggressive connection pooling or timeouts)"],"input_types":["structured data (MCP protocol messages)"],"output_types":["structured data (MCP responses streamed as SSE events)"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":28,"verified":false,"data_access_risk":"high","permissions":["MCP-compatible client (Claude Desktop, custom LLM application with MCP support)","Network access to target OCI registry (Docker Hub, ECR, GCR, Quay, private registries)","Registry credentials (username/password, OAuth token, or service account) if accessing private registries","Python 3.8+ (inferred from MCP server implementation patterns)","MCP client with tool-calling support","Network access to OCI registry with tag listing API enabled","Registry credentials if repository is private","MCP client","Network access to OCI registry","Registry credentials for private images"],"failure_modes":["SSE transport limits concurrent requests compared to HTTP/2 multiplexing; suitable for sequential or low-concurrency workloads","No built-in caching of registry responses; repeated queries to same image incur full API latency","Authentication limited to registry credentials passed at MCP server initialization; no dynamic credential rotation","Large image manifests (>10MB) may exceed MCP message size limits depending on client implementation","Pagination handling depends on registry implementation; some registries (Docker Hub) have rate limits on tag listing (~100 requests/hour for unauthenticated access)","Tag metadata (creation date, size) not uniformly available across all registry types; some registries only return tag names","No built-in tag filtering or regex support; filtering must be done client-side after retrieving full tag list","Large repositories (>10k tags) may require multiple paginated requests, increasing latency","Manifest list resolution requires additional registry requests; multi-arch image inspection incurs 2-3x latency vs single-arch","Layer blob content not retrieved by default; only digest and size metadata available without additional requests","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.05,"quality":0.37,"ecosystem":0.39999999999999997,"match_graph":0.25,"freshness":0.52,"weights":{"adoption":0.25,"quality":0.25,"ecosystem":0.15,"match_graph":0.23,"freshness":0.12}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-06-17T09:51:03.579Z","last_scraped_at":"2026-05-03T14:00:15.503Z","last_commit":null},"community":{"stars":null,"forks":null,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=ocireg","compare_url":"https://unfragile.ai/compare?artifact=ocireg"}},"signature":"v4fGn2YslHMTpb4mBTKHPzzB6J+2gB8IYoqJFWVg9bAynV0CfXMT2tHTBYmstcVTosmGAHpvFc6IMPmGfNQKCA==","signedAt":"2026-06-21T05:19:06.547Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/ocireg","artifact":"https://unfragile.ai/ocireg","verify":"https://unfragile.ai/api/v1/verify?slug=ocireg","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}