# Hermes Search Engine gRPC API

**Canonical:** https://apis.io/apis/machinelibrary-ai/hermes-search-engine-grpc-api/  
**Provider:** Space Frontiers — https://apis.io/providers/machinelibrary-ai/  
**Documentation:** https://github.com/SpaceFrontiers/hermes

Hermes Search Engine gRPC API is one of 9 APIs that [Space Frontiers](https://apis.io/providers/machinelibrary-ai/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Search, gRPC, and Open Source. The published artifact set on APIs.io includes API documentation.

Self-hosted, MIT-licensed Rust search engine published by Space Frontiers (github.com/SpaceFrontiers/hermes) with a published protobuf wire contract: hermes.SearchService (Search, GetDocument, GetIndexInfo, GetTextStats) and hermes.IndexService (index creation, streaming ingestion, primary-key deletion and upsert, commit, merge, vector-index retraining), plus hermes.broker.BrokerService for shard topology. Distributed as crates (hermes-core, hermes-server, hermes-broker, hermes-tool), PyPI (hermes-client-python), npm (hermes-client-typescript, hermes-wasm). There is no hosted endpoint: you run hermes-server yourself.

## Machine-readable artifacts (4)

- **Protobuf** — https://raw.githubusercontent.com/api-evangelist/machinelibrary-ai/refs/heads/main/grpc/machinelibrary-ai-hermes.proto
- **Protobuf** — https://raw.githubusercontent.com/api-evangelist/machinelibrary-ai/refs/heads/main/grpc/machinelibrary-ai-hermes-broker.proto
- **Documentation** — https://github.com/SpaceFrontiers/hermes/blob/main/hermes-proto/README.md
- **SourceCode** — https://github.com/SpaceFrontiers/hermes

## Other Space Frontiers APIs (8)

- [Machine Library MCP Server](https://apis.io/apis/machinelibrary-ai/machine-library-mcp-server/)
- [Machine Library A2A Agent](https://apis.io/apis/machinelibrary-ai/machine-library-a2a-agent/)
- [Space Frontiers Documents API](https://apis.io/apis/machinelibrary-ai/machinelibrary-ai-documents-api/)
- [Space Frontiers Payments API](https://apis.io/apis/machinelibrary-ai/machinelibrary-ai-payments-api/)
- [Space Frontiers Raw document downloads API](https://apis.io/apis/machinelibrary-ai/machinelibrary-ai-raw-document-downloads-api/)
- [Space Frontiers Recognition API](https://apis.io/apis/machinelibrary-ai/machinelibrary-ai-recognition-api/)
- [Space Frontiers Search API](https://apis.io/apis/machinelibrary-ai/machinelibrary-ai-search-api/)
- [Space Frontiers Conversations API](https://apis.io/apis/machinelibrary-ai/machinelibrary-ai-conversations-api/)

## Tags

Search, gRPC, Open Source

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/machinelibrary-ai/hermes-search-engine-grpc-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/machinelibrary-ai/.