Constat — 483 Risk Radar (MCP server)

The MCP server behind Constat — FDA & NHTSA regulatory-risk intelligence for AI agents, over the Model Context Protocol. Live public regulatory data — recalls, adverse events, warning letters, 510(k) premarket evidence, postmarket drift signals, reimbursement pathways, and vehicle safety. Decision support, not regulatory advice.

• Endpoint: https://constat.dev/api/mcp (legacy https://radar.healthai.com/api/mcp still serves)
• Transport: Streamable HTTP (JSON-RPC 2.0)
• Auth: none for anonymous access (10 work units/min and 50/day per anonymous source); an optional X-API-Key header enables the separately assigned metered allowance. Tool calls have documented work-unit costs.
• Registry: com.healthai/radar (official MCP registry)

The evidence corpus and tool logic run hosted at the endpoint above. This repo also ships server.mjs, a zero-dependency stdio bridge to that endpoint, so stdio-only MCP clients can use the server like any local one:

node server.mjs            # stdio MCP server, bridges to constat.dev/api/mcp

// e.g. in an MCP client config
{ "mcpServers": { "constat": { "command": "node", "args": ["/path/to/server.mjs"] } } }

docker build -t constat-mcp . && docker run -i constat-mcp   # same, containerized

Tools

Quick start

curl -s https://constat.dev/api/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call",
       "params":{"name":"device_risk_lookup","arguments":{"product_code":"FRN"}}}'

List tools with {"method":"tools/list"}. Note the Accept header must include text/event-stream (streamable-HTTP requirement).

Each of the 14 tools declares an output schema. Tool calls return stru

... View full README on GitHub