as4-411

Standards-aware directory and discovery service that cross-maps identifiers and endpoints across AS4, SS7, and additional messaging ecosystems. Enables deterministic routing, dynamic discovery, and policy-driven interoperability for messaging gateways.

Goals

• Unified Directory Core: Store and resolve "who/where/how" for messaging participants across networks.
• Cross-Discovery: Translate identifiers between domains (e.g., AS4 PartyId ↔ PEPPOL ParticipantId ↔ E.164/GT ↔ SS7 PC/SSN). FI-to-FI: ISO 20022 over AS4 (PartyId → endpoint) documented in docs/protocols/iso20022-over-as4.md.
• Routing Outputs: Produce normalized routing directives for gateways (endpoint URL, transport profile, security material references, QoS).
• Pluggable Ecosystems: Add new protocol domains via adapters.
• Gateway Submodule: Embed as a library and/or sidecar service into gateway stacks (AS4 MSH, SS7 STP/SCP, API gateways).

Repository Structure

• docs/ — Architecture, ADRs, API specs, security, operations. Scope and non-goals: ADR-000.
• packages/core — Domain model, validation, policy engine.
• packages/resolver — Resolution pipeline, scoring, caching.
• packages/storage — Persistence (Postgres, SQLite, in-memory).
• packages/api — REST and gRPC APIs.
• packages/connectors — SMP/SML, DNS, file, SS7 ingest.
• packages/client — TypeScript, Python, Go clients.
• packages/cli — Admin and import/export tools.
• examples/ — Gateway sidecar and embedded-library usage.

Submodule Integration

Gateways can include as4-411 as a git submodule (e.g. under vendor/as4-411 or modules/as4-411) and consume:

• Library: packages/core + packages/resolver for embedded resolution with a local store (SQLite/Postgres).
• Service: packages/api/rest (or gRPC) as a sidecar or shared network service.

Development

pnpm install
pnpm run build
pnpm run lint
pnpm run test

License

See LICENSE file.