JARVIS Run Gateway

First-party OSS reference implementation of the ARP spec/v1 Run Gateway.

This JARVIS component implements the Run Gateway API using the SDK packages: arp-standard-server, arp-standard-model, and arp-standard-client.

Implements: ARP Standard spec/v1 Run Gateway API (contract: ARP_Standard/spec/v1/openapi/run-gateway.openapi.yaml).

Requirements

• Python >= 3.11

Install

python3 -m pip install arp-jarvis-rungateway

Local configuration (optional)

For local dev convenience, copy the example env file:

cp .env.example .env.local

src/scripts/dev_server.sh auto-loads .env.local (or .env).

Run

• Run Gateway listens on http://127.0.0.1:8080 by default.

python3 -m pip install -e .
arp-jarvis-rungateway

[!TIP] Use bash src/scripts/dev_server.sh --host ... --port ... --reload for dev convenience.

Using this repo

This repo is the maintained JARVIS reference for the Run Gateway.

To customize behavior, edit:

• src/jarvis_run_gateway/gateway.py (incoming API handlers)
• src/jarvis_run_gateway/run_coordinator_client.py (gateway → coordinator client behavior)

Default behavior

• The gateway requires a configured Run Coordinator at startup.
• All run lifecycle methods forward to the coordinator (no local fallback).
• The gateway validates inbound JWTs and exchanges them for coordinator-scoped tokens.

Common extensions

• Customize outbound auth (token caching, mTLS) between gateway and coordinator.
• Add gateway-side validation/quotas before forwarding.

Implementation overview

Request flow:

1. Inbound request hits the Run Gateway (arp-standard-server).
2. Auth middleware validates the Authorization: Bearer <JWT> header.
3. Gateway captures the inbound bearer token and forwards the call to the coordinator.
4. Gateway exchanges the inbound token for a coordinator-scoped token (or uses client-credentials when no token is present in dev/optional mode).
5. Coordinator processes the request and the gateway returns the response.

Key implementation details:

• Stateless gateway: no local run storage or caching.
• Coordinator is required at startup; the gateway fails fast if missing.
• Token exchange uses arp-auth (OIDC client credentials + RFC 8693 token exchange).
• NDJSON streams are proxied as opaque bytes (no rewrite).

Quick health check

curl http://127.0.0.1:8080/v1/health

Configuration

CLI flags:

• --host (default 127.0.0.1)
• --port (default 8080)
• --reload (dev only)

Environment variables:

• JARVIS_RUN_COORDINATOR_URL: base URL for the Run Coordinator (example: http://127.0.0.1:8081). Required at startup.
• JARVIS_RUN_COORDINATOR_AUDIENCE: audience for token exchange (default: arp-run-coordinator).
• ARP_AUTH_CLIENT_ID / ARP_AUTH_CLIENT_SECRET: required for STS token exchange for outbound coordinator calls.
• ARP_AUTH_ISSUER: OIDC issuer (required unless ARP_AUTH_TOKEN_ENDPOINT is set).
• ARP_AUTH_TOKEN_ENDPOINT: optional override for the STS token endpoint.

Validate conformance (arp-conformance)

Once the service is running, validate it against the ARP Standard:

python3 -m pip install arp-conformance
arp-conformance check run-gateway --url http://127.0.0.1:8080 --tier smoke
arp-conformance check run-gateway --url http://127.0.0.1:8080 --tier surface

Helper scripts

• src/scripts/dev_server.sh: run the server (flags: --host, --port, --reload).

  bash src/scripts/dev_server.sh --host 127.0.0.1 --port 8080
  

• src/scripts/send_request.py: start a run from a JSON file and fetch the run back.

  python3 src/scripts/send_request.py --request src/scripts/request.json
  

Authentication

Auth is enabled by default (JWT). To disable for local dev, set ARP_AUTH_PROFILE=dev-insecure. If no ARP_AUTH_* env vars are set, the gateway defaults to required JWT auth with the dev Keycloak issuer.

To enable local Keycloak defaults, set:

• ARP_AUTH_PROFILE=dev-secure-keycloak
• ARP_AUTH_AUDIENCE=arp-run-gateway
• ARP_AUTH_ISSUER=http://localhost:8080/realms/arp-dev

Gateway → Coordinator token exchange

The gateway exchanges the incoming bearer token for a coordinator-scoped token before forwarding. This uses arp-auth and requires ARP_AUTH_CLIENT_ID/ARP_AUTH_CLIENT_SECRET.

If no inbound token is present (only possible when ARP_AUTH_MODE=optional or disabled), the gateway falls back to client-credentials to obtain a service token. This is intended for dev/internal usage only; production should keep ARP_AUTH_MODE=required.

External user tokens (Keycloak broker)

If user tokens come from an external IdP but exchange should happen at Keycloak STS:

ARP_AUTH_MODE=required
ARP_AUTH_ISSUER=https://idp.example.com/oidc

ARP_AUTH_TOKEN_ENDPOINT=https://keycloak.example.com/realms/arp-dev/protocol/openid-connect/token
ARP_AUTH_CLIENT_ID=arp-run-gateway
ARP_AUTH_CLIENT_SECRET=...

JARVIS_RUN_COORDINATOR_AUDIENCE=arp-run-coordinator
JARVIS_RUN_COORDINATOR_URL=https://coordinator.example.com

Keycloak must be configured to trust the external IdP and allow token exchange for the subject token.

Upgrading

When upgrading to a new ARP Standard SDK release, bump pinned versions in pyproject.toml (arp-standard-*==...) and re-run conformance.