npm · @g-digital/mcp-gocertius
$npx -y @g-digital/mcp-gocertius@2.0.0 MCP_ALLOW_INSECURE_FILE_URL — Set to "true" to allow plain http:// fileUrl downloads in evidence_create (default https-only). Private/internal addresses are rejected regardless (resolution-time check; see the documented DNS TOCTOU limitation in the hosted-deployment runbook).
MCP_ALLOW_UNVERIFIED_BEARER — Escape hatch for MCP_HTTP_PUBLIC=true WITHOUT inbound-token introspection: set to "true" ONLY when an upstream gateway already verifies Bearer tokens. The server logs a prominent warning and forwards tokens upstream unverified.
MCP_ALLOWED_HOSTS — Comma-separated allowed Host headers. Empty = Host validation disabled (default). When set, requests with a Host outside the list are rejected.
MCP_ALLOWED_ORIGINS — Comma-separated allowed browser Origins (DNS-rebinding defense). Empty = reject any request carrying an Origin header; non-browser clients (CLI/SDK) send no Origin and are always allowed. Use '*' to allow all.
MCP_API_BASE_URL (required) — Upstream API root. Required: your user key is exchanged for a session token against this host, and the server will not start without it.
MCP_AUTH_USER_KEY (required) · secret — Long-lived GoCertius user key, exchanged automatically for a short-lived session token. Use it for headless or automated access instead of an account password. (See https://www.gocertius.io for credential acquisition.)
MCP_HTTP_HOST — Interface the HTTP transport binds to. Default 127.0.0.1 (localhost only). Set 0.0.0.0 to expose on all interfaces (containers do this automatically).
MCP_HTTP_MAX_BODY_BYTES — Maximum accepted POST /mcp request-body size in bytes (default 16777216 = 16 MiB — sized so base64 file uploads within the documented tool limits fit). Oversized requests get a 413 JSON-RPC error before/while reading — closes a memory-exhaustion DoS vector in public deployments. Note: base64 file sources are capped by this limit BEFORE MCP_FILE_MAX_BYTES applies.
MCP_HTTP_PUBLIC — Set to "true" for public/multi-tenant deployments. Activates Host validation and refuses to start unless (1) MCP_ALLOWED_ORIGINS or MCP_ALLOWED_HOSTS is set AND (2) inbound Bearer introspection is configured (MCP_SVC_INTROSPECT_URL + MCP_SVC_CLIENT_ID/SECRET) or MCP_ALLOW_UNVERIFIED_BEARER=true is set explicitly (fail-closed).
MCP_SVC_CLIENT_ID — Client ID this server presents to the introspection endpoint above (its resource-server credentials). Only needed alongside MCP_SVC_INTROSPECT_URL; it does not authenticate you to GoCertius.
MCP_SVC_CLIENT_SECRET · secret — Client secret this server presents to the introspection endpoint above (its resource-server credentials). Only needed alongside MCP_SVC_INTROSPECT_URL; it does not authenticate you to GoCertius. (See https://www.gocertius.io for credential acquisition.)
MCP_SVC_INTROSPECT_URL — RFC 7662 token introspection URL for inbound Bearer verification in HTTP mode. Opt-in, and required when MCP_HTTP_PUBLIC=true. Leave empty for stdio (local) use.
PORT — HTTP port when running in hosted (HTTP) mode; ignored in stdio mode