> ## Documentation Index
> Fetch the complete documentation index at: https://skip-connect.mintlify.site/connect/llms.txt
> Use this file to discover all available pages before exploring further.

> Reference document for configurable values in Connect and Applications.

# Configuration

This document serves as a reference for ways to further configure the Connect sidecar, as well as in depth explanations of the application node's configuration.

## Connect Sidecar

Connect can be configured by both flags and environment variables.

### Env Vars

The following values are read via environment variables:

| Key | Default | Description |
| - | - | - |
| `CONNECT_CONFIG_HOST` | `"0.0.0.0"` | The address Connect will serve requests from. WARNING: changing this value requires updating the `oracle_address` in the `app.toml` configuration. |
| `CONNECT_CONFIG_PORT` | `"8080"` | The port Connect will serve requests from. WARNING: changing this value requires updating the `oracle_address` in the `app.toml` configuration. |
| `CONNECT_CONFIG_METRICS_ENABLED` | `"true"` | Enables prometheus metrics. |
| `CONNECT_CONFIG_METRICS_PROMETHEUSSERVERADDRESS` | `"0.0.0.0:8002"` | The address of your prometheus server instance. |

### Flags

| Flag | Default Value | Description |
| - | - | - |
| `--market-map-endpoint` | `""` | The listen-to endpoint for market-map. This is typically the blockchain node's gRPC endpoint. |
| `--oracle-config` | `""` | Overrides part of the Oracle configuration. This does not override the *entire* configuration, only the part of the configuration specified in the json file passed in. |
| `--run-pprof` | `false` | Run pprof server. |
| `--pprof-port` | `"6060"` | Port for the pprof server to listen on. |
| `--log-std-out-level` | `"info"` | Log level (debug, info, warn, error, dpanic, panic, fatal). |
| `--log-file-level` | `"info"` | Log level for the file logger (debug, info, warn, error, dpanic, panic, fatal). |
| `--log-file` | `"sidecar.log"` | Write logs to a file. |
| `--log-max-size` | `100` | Maximum size in megabytes before log is rotated. |
| `--log-max-backups` | `1` | Maximum number of old log files to retain. |
| `--log-max-age` | `3` | Maximum number of days to retain an old log file. |
| `--log-file-disable-compression` | `false` | Compress rotated log files. |
| `--log-disable-file-rotation` | `false` | Disable writing logs to a file. |
| `--metrics-enabled` | `true` | Enables the Oracle client metrics. |
| `--metrics-prometheus-address` | `"0.0.0.0:8002"` | Sets the Prometheus server address for the Oracle client metrics. |
| `--host` | `"0.0.0.0"` | The address the Oracle will serve from. |
| `--port` | `"8080"` | The port the Oracle will serve from. |
| `--update-interval` | `250000000` | The interval at which the oracle will fetch prices from providers. |
| `--max-price-age` | `120000000000` | Maximum age of a price that the oracle will consider valid. |

## Application Node

The blockchain application is configured under the `[oracle]` heading in your application's `app.toml` file.

```toml app.toml theme={null}
# ... other sections

[oracle]
# Enabled indicates whether the oracle is enabled.
enabled = "true"

# Oracle Address is the URL of the out of process oracle sidecar. This is used to
# connect to the oracle sidecar when the application boots up.
oracle_address = "CONNECT_ADDRESS_HERE:CONNECT_PORT_HERE" # default Connect port is 8080.

# Client Timeout is the time that the application is willing to wait for responses from
# the oracle before timing out.
client_timeout = "250ms"

# MetricsEnabled determines whether oracle metrics are enabled. Specifically,
# this enables instrumentation of the oracle client and the interaction between
# the oracle and the app.
metrics_enabled = "true"

# PriceTTL is the maximum age of the latest price response before it is considered stale.
# The recommended max age is 10 seconds (10s). If this is greater than 1 minute (1m), the app
# will not start.
price_ttl = "10s"

# Interval is the time between each price update request. The recommended interval
# is the block time of the chain. Otherwise, 1.5 seconds (1500ms) is a good default. If this
# is greater than 1 minute (1m), the app will not start.
interval = "1500ms"
```