# Aalyria

> Aalyria Technologies builds software and hardware for operating resilient, high-throughput networks in motion across space, air, land and sea. Its flagship platform, Spacetime, is a temporospatial software-defined networking (SDN) system that models the time-dynamic position and orientation of satellites, aircraft, ships and ground stations, then continuously plans, schedules and steers the links between them. Spacetime is programmable through three open, Apache-2.0 licensed gRPC/Protocol Buffers APIs. Aalyria also produces Tightbeam, a free-space optical communications system. The company was spun out of Alphabet in 2022, carrying technology developed for Project Loon and Taara.

Generated by the API Evangelist enrichment pipeline on 2026-08-02. Aalyria does not publish
an llms.txt of its own (https://docs.spacetime.aalyria.com/llms.txt and
https://www.aalyria.com/llms.txt both returned 404 on 2026-08-02), so this file is generated
from the provider's published artifacts.

Spacetime has no OpenAPI, no GraphQL and no REST surface. The machine-readable contract is
proto3 + gRPC, published under Apache-2.0 at https://github.com/aalyria/api — 45 .proto
files, 13 services, 182 RPCs, 512 messages. Instances are deployed per customer on a
customer-specific $DOMAIN, with APIs resolved by subdomain (model-v1.$DOMAIN,
provisioning-v1alpha.$DOMAIN, status-v1.$DOMAIN). Authentication is a self-signed RS256 JWT
whose `aud` claim is bound to a single gRPC service and method.

## APIs

- [Spacetime Northbound Interface (NBI)](https://docs.spacetime.aalyria.com/api/nbi/): Define and orchestrate the network — the Model API (NMTS entities and relationships), Provisioning (SR-TE policies, links, downtimes, constraint groups), Solution (computed beams and paths), Simulation, Permissions and Audit.
- [Spacetime Southbound Interface (SBI / CDPI)](https://docs.spacetime.aalyria.com/api/sbi/): Device-facing control plane — the Scheduling bidirectional stream that delivers beam/radio/flow control updates and collects per-request status, plus the Telemetry push service.
- [Spacetime Federation API (East-West)](https://docs.spacetime.aalyria.com/api/federation/): Inter-operator interconnection and transponded capacity, in the community `outernet.federation.*` namespace.
- [Spacetime Status API](https://docs.spacetime.aalyria.com/api/): GetVersion and GetMetrics; metrics are returned in OpenTelemetry protobuf format.

## Specs

- [gRPC / Protobuf index](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/grpc/aalyria-grpc-index.yml): every proto file, package, service and RPC.
- [Model API v1](https://github.com/aalyria/api/blob/main/api/model/v1/model.proto)
- [Provisioning API v1alpha](https://github.com/aalyria/api/blob/main/api/provisioning/v1alpha/provisioning.proto)
- [Scheduling API v1alpha (SBI)](https://github.com/aalyria/api/blob/main/api/scheduling/v1alpha/scheduling.proto)
- [Telemetry API v1alpha](https://github.com/aalyria/api/blob/main/api/telemetry/v1alpha/telemetry.proto)
- [Solution API v1alpha](https://github.com/aalyria/api/blob/main/api/solution/v1alpha/solution.proto)
- [Simulation API v1alpha](https://github.com/aalyria/api/blob/main/api/simulation/v1alpha/simulation.proto)
- [Federation Interconnect v1alpha](https://github.com/aalyria/api/blob/main/api/federation/interconnect/v1alpha/interconnect.proto)
- [Federation Transponder v1alpha](https://github.com/aalyria/api/blob/main/api/federation/transponder/v1alpha/transponder.proto)
- [Permissions v1alpha](https://github.com/aalyria/api/blob/main/api/permissions/v1alpha/permissions.proto)
- [Status v1](https://github.com/aalyria/api/blob/main/api/status/v1/status.proto)

## Docs

- [Spacetime Knowledge Base](https://docs.spacetime.aalyria.com/)
- [API documentation](https://docs.spacetime.aalyria.com/api/)
- [Authentication](https://docs.spacetime.aalyria.com/api/authentication/)
- [Building your first Scenario](https://docs.spacetime.aalyria.com/api/nbi/build-your-first-scenario/)
- [Client libraries](https://docs.spacetime.aalyria.com/api/client-libraries/)
- [nbictl command line tool](https://docs.spacetime.aalyria.com/api/nbictl/index.html)
- [Developer guides](https://docs.spacetime.aalyria.com/dev-guides/)
- [Protobuf data structures](https://docs.spacetime.aalyria.com/dev-guides/protobuf/)
- [gRPC APIs](https://docs.spacetime.aalyria.com/dev-guides/grpc/)
- [Semantic versioning](https://docs.spacetime.aalyria.com/dev-guides/semver/)
- [API stability levels](https://docs.spacetime.aalyria.com/dev-guides/api-stability-levels/)
- [Backward compatibility](https://docs.spacetime.aalyria.com/dev-guides/backward-compatibility/)

## Tooling

- [aalyria/api on GitHub](https://github.com/aalyria/api) — Apache-2.0 protos, reference SBI agent (Go), nbictl, and a contrib directory of real modelled hardware.
- [Releases](https://github.com/aalyria/api/releases) — the dated release feed; there is no prose changelog.
- [github.com/aalyria/api on pkg.go.dev](https://pkg.go.dev/github.com/aalyria/api)
- [API governance](https://github.com/aalyria/api/blob/main/GOVERNANCE.md) — changes proposed by email to spacetime-maintainers@aalyria.com; CLA required.

## API Evangelist artifacts

- [apis.yml](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/apis.yml)
- [Authentication profile](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/authentication/aalyria-authentication.yml)
- [API conventions](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/conventions/aalyria-conventions.yml)
- [Error catalog](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/errors/aalyria-problem-types.yml)
- [Lifecycle and stability policy](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/lifecycle/aalyria-lifecycle.yml)
- [Conformance](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/conformance/aalyria-conformance.yml)
- [Data model](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/data-model/aalyria-data-model.yml)
- [Packages and SDKs](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/packages/aalyria-packages.yml)
- [nbictl CLI surface](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/cli/aalyria-cli.yml)
- [Changelog](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/changelog/aalyria-changelog.yml)
- [Agent skills](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/skills/_index.yml)
- [Candidate MCP tool set](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/mcp/aalyria-mcp.yml)
- [Domain security probe](https://raw.githubusercontent.com/api-evangelist/aalyria/refs/heads/main/security/aalyria-domain-security.yml)

## Not published

Probed 2026-08-02, all missing: llms.txt, /.well-known/security.txt, /.well-known/agent-card.json,
/.well-known/agent.json, /.well-known/openid-configuration, /.well-known/oauth-authorization-server,
/.well-known/api-catalog, /.well-known/ai-plugin.json, OpenAPI, AsyncAPI, a public status page,
a public pricing page, a self-serve sign-up, a hosted MCP server, a Postman collection, a
vulnerability disclosure policy and a trust center. Spacetime is sold and deployed under
commercial agreement, so access is granted out of band rather than through self-service.