Built on the OpenHIE (Open Health Information Exchange) mediator pattern for standards-compliant Health Information Exchange. Discover agents from the Global Healthcare Agent Registry and Routing Architecture (GHARRA), and connect clinical systems through the Nexus Agent-to-Agent (A2A) protocol.
From discovery to deployment in minutes. BulletTrain's OpenHIE-compliant orchestration layer handles interoperability so you can focus on your workflow. Every code snippet below runs against the real APIs.
from gharra import RegistryClient client = RegistryClient("https://registry.symphonix.health") agents = client.discover( capability="fhir-r4-patient-search", region="eu-west-1" ) print(agents[0].name, agents[0].endpoint)
import httpx response = httpx.post( agents[0].endpoint, json={ "jsonrpc": "2.0", "method": "tasks/send", "params": {"query": "Find patient by MRN 00412"}, "id": 1 } ) print(response.json()["result"])
git clone https://github.com/symphonix-health/bullettrain.git cd bullettrain && pip install -e ".[all]" python -m bullettrain.launch --all-agents
Four steps from raw clinical data to guaranteed delivery — fully governed, fully auditable.
Plug into clinical systems via FHIR, HL7, CDA, X12, DICOM adapters.
BulletTrain automatically classifies data as clinical, operational, or containing patient data.
Governed routing to the right destination with full audit trail.
Guaranteed delivery with circuit breakers, dead-letter recovery, and event replay.
A snapshot of the core endpoints. Enough to start building — full reference in the architecture docs.
| Endpoint | Method | Description |
|---|---|---|
| /v1/agents | POST | Register an agent in the Global Agent Registry |
| /v1/discover | GET | Discover agents by capability and jurisdiction |
| /v1/route | POST | Get routing advisory with full trust bundle |
| /tasks/send | POST | Send a task to another agent via Nexus |
| /tasks/get | GET | Poll task status and retrieve results |
| /health | GET | Agent health check |
See all 30+ endpoints in the full API Reference →
BulletTrain is free to deploy. GHARRA is a managed agent registry. Nexus A2A is the secure communication protocol that connects them.
JSON-RPC 2.0 protocol for secure inter-agent communication in healthcare. Server-Sent Events (SSE), WebSocket transport, 13-point route admission validation.
Federated registry for healthcare AI agents. Discover, register, and route to agents across organisational boundaries. Hosted by Symphonix Health — pay per agent usage.
Comprehensive guides, API references, and protocol specifications.
Complete endpoint documentation for the GHARRA REST API and Nexus JSON-RPC protocol.
JWT, mTLS, DPoP auth flows. API keys, token minting, and security best practices.
Get started with the GHARRA Python SDK in 5 minutes. Discovery, routing, billing, and invocation.
Platform architecture, microservice catalogue, deployment guides, and configuration reference.
Agent discovery, registration, capability schemas, and federation configuration.
Full protocol specification including JSON-RPC methods, transport bindings, and error codes.
Infrastructure sizing, deployment profiles, and environment specification for cloud and on-premise.
Every programming interface — REST, MCP, Nexus A2A, and the Python SDK — is fully documented in the API Reference.
Three tools exposed via Model Context Protocol: discover_agents, route, and register. Any MCP-compatible AI agent (Claude, GPT, open-source) can invoke registry operations directly — no custom code required.
View MCP tool schemas →30+ endpoints for agent registration, discovery, routing, trust management, events, billing, and computer use. Full request/response schemas, auth flows, and error codes.
View REST endpoints →Agent-to-agent communication protocol. Task lifecycle management, streaming via SSE/WebSocket, avatar discovery, and 13-point route admission validation.
View Nexus A2A methods →High-level client wrapping REST + Nexus A2A. pip install gharra — handles authentication, pagination, retry, and transport negotiation.
Clone the repos, run the quick start, and ship your first healthcare integration today.
Live demos: Cross-Border Orchestration • Agent Network Topology