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SigNoz

SigNoz MCP Server

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by SigNoz
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Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
LOG_LEVELNoLogging level: info (default), debug, warn, error
SIGNOZ_URLNoSigNoz instance URL
SEGMENT_KEYNoSegment write key used only when analytics is enabled
OAUTH_ENABLEDNoEnable OAuth 2.1 authentication flow (true/false)
SIGNOZ_API_KEYNoSigNoz API key (get from Settings → API Keys in the SigNoz UI)
TRANSPORT_MODENoMCP transport mode: stdio (default) or http
MCP_SERVER_HOSTNoHost/interface for HTTP transport mode (default: empty, listens on all interfaces). Set to 127.0.0.1 for loopback-only access.
MCP_SERVER_PORTNoPort for HTTP transport mode (default: 8000)
OAUTH_ISSUER_URLNoPublic URL of this MCP server (used in OAuth metadata discovery)
ANALYTICS_ENABLEDNoEnable product analytics (true/false; default: false)
CLIENT_CACHE_SIZENoMaximum cached tenant clients in multi-tenant HTTP mode (default: 256)
OAUTH_TOKEN_SECRETNoEncryption key for OAuth tokens (min 32 bytes, e.g. openssl rand -base64 32)
OTEL_TRACES_EXPORTERNoSet to 'none' to disable internal trace export even when an OTLP endpoint is configured.
MCP_MAX_REQUEST_BYTESNoMax inbound MCP HTTP request body size in bytes (default: 4194304 / 4 MiB)
OTEL_METRICS_EXPORTERNoSet to 'none' to disable internal metrics export and runtime metrics even when an OTLP endpoint is configured.
SIGNOZ_CUSTOM_HEADERSNoExtra HTTP headers added to every API request, useful when SigNoz is behind a reverse proxy requiring auth (e.g. CF-Access-Client-Id:id.access,CF-Access-Client-Secret:secret). Format: Key1:Value1,Key2:Value2
CLIENT_CACHE_TTL_MINUTESNoTenant-client cache lifetime in minutes (default: 30)
OAUTH_AUTH_CODE_TTL_SECONDSNoAuthorization code lifetime in seconds (default: 600 / 10min)
OTEL_EXPORTER_OTLP_ENDPOINTNoOTLP gRPC endpoint for the MCP server's own traces and metrics.
SIGNOZ_DOCS_REFRESH_INTERVALNoRuntime docs sitemap refresh interval (Go duration, default: 6h)
SIGNOZ_INSTANCE_URL_ALLOWLISTNoMulti-tenant (http) only: comma-separated allowlist of SigNoz backend hosts the server will proxy to.
OAUTH_ACCESS_TOKEN_TTL_MINUTESNoAccess token lifetime in minutes (default: 60)
OAUTH_REFRESH_TOKEN_TTL_MINUTESNoRefresh token lifetime in minutes (default: 43200 / 30d)
SIGNOZ_DOCS_FULL_REFRESH_INTERVALNoRuntime full docs refresh interval (Go duration, default: 24h)
OTEL_EXPORTER_OTLP_TRACES_ENDPOINTNoTrace-specific OTLP gRPC endpoint; overrides OTEL_EXPORTER_OTLP_ENDPOINT for traces.
OTEL_EXPORTER_OTLP_METRICS_ENDPOINTNoMetrics-specific OTLP gRPC endpoint; overrides OTEL_EXPORTER_OTLP_ENDPOINT for metrics.

Instructions

Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.

This server publishes no instructions, or was last inspected before Glama recorded them.

Capabilities

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Tools

Functions exposed to the LLM to take actions

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Prompts

Interactive templates invoked by user choice

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Resources

Contextual data attached and managed by the client

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