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Loki Provider

Use provider loki to query Grafana Loki via HTTP API.

Scope value

For all tools, scope is your Loki base URL.

Example:

scope: "http://localhost:3100"

Auth

You can use either:

  • LOKI_BEARER_TOKEN
  • LOKI_USERNAME and LOKI_PASSWORD

If both are set, bearer token takes precedence.

Set one of these before starting your MCP client.

Bearer token:

export LOKI_BEARER_TOKEN="your-token"

Basic auth:

export LOKI_USERNAME="your-username"
export LOKI_PASSWORD="your-password"

Persist across terminal sessions:

cat >> ~/.bashrc <<'EOF'
export LOKI_BEARER_TOKEN="your-token"
EOF
source ~/.bashrc

Use your shell profile file (~/.zshrc, ~/.bashrc, or ~/.bash_profile) based on your shell.

Use the basic auth vars instead if that is what your Loki deployment expects.

Important behavior

  • log_name is used as label selector input.
  • resource_type can be used as a selector hint depending on query.

Useful examples

query_logs(scope="http://localhost:3100", log_name="{job=\"payments\"}", start_time="1h", text_filter="failed")

summarize_logs(scope="http://localhost:3100", start_time="6h", severity="ERROR")