Configuration

Configuration is managed via the .env file in apps/backend/docker-compose/.

Database

Variable	Default	Description
`POSTGRES_USER`	`flowlike`	Database username
`POSTGRES_PASSWORD`	`flowlike_dev`	Database password
`POSTGRES_DB`	`flowlike`	Database name
`POSTGRES_PORT`	`5432`	Host port mapping

API Service

Variable	Default	Description
`API_PORT`	`8080`	API HTTP port
`METRICS_PORT`	`9090`	Prometheus metrics port
`RUST_LOG`	`info`	Log level (`debug`, `info`, `warn`, `error`)

Execution Runtime

Variable	Default	Description
`RUNTIME_PORT`	`9000`	Runtime HTTP port
`MAX_CONCURRENT_EXECUTIONS`	`10`	Max parallel executions
`EXECUTION_TIMEOUT_SECONDS`	`3600`	Timeout per execution (1 hour)

JWT Execution Keys

These keys enable stateless trust between API and execution runtimes:

Variable	Required	Description
`EXECUTION_KEY`	Yes	Base64-encoded ES256 private key
`EXECUTION_PUB`	Yes	Base64-encoded ES256 public key
`EXECUTION_KID`	No	Key identifier (default: `execution-es256-v1`)

Generate these using:

./tools/gen-execution-keys.sh

Storage Provider

Variable	Default	Description
`STORAGE_PROVIDER`	`aws`	Provider: `aws`, `azure`, `gcp`
`META_BUCKET`	`flow-like-meta`	Metadata bucket name
`CONTENT_BUCKET`	`flow-like-content`	Content bucket name
`LOG_BUCKET`	`flow-like-logs`	Logs bucket name

See Storage Providers for provider-specific configuration.

LLM Provider Configuration

The API can proxy LLM requests to various providers:

Variable	Description
`OPENROUTER_API_KEY`	OpenRouter API key (default provider)
`HOSTED_OPENAI_API_KEY`	OpenAI API key
`HOSTED_ANTHROPIC_API_KEY`	Anthropic API key
`HOSTED_AZURE_API_KEY`	Azure OpenAI API key
`HOSTED_AZURE_ENDPOINT`	Azure OpenAI endpoint URL

Monitoring

Variable	Default	Description
`METRICS_ENABLED`	`true`	Enable Prometheus metrics
`METRICS_PORT`	`9090`	Metrics endpoint port
`SENTRY_DSN`	—	Sentry error tracking DSN

Example minimal configuration

# Database
POSTGRES_PASSWORD=your-secure-password

# Storage (AWS S3 example)
STORAGE_PROVIDER=aws
AWS_REGION=us-east-1
AWS_ACCESS_KEY_ID=AKIA...
AWS_SECRET_ACCESS_KEY=...
META_BUCKET=my-flow-like-meta
CONTENT_BUCKET=my-flow-like-content
LOG_BUCKET=my-flow-like-logs

# JWT Keys (generated with gen-execution-keys.sh)
EXECUTION_KEY=...
EXECUTION_PUB=...