chains-api/.env.example at main · Johnaverse/chains-api · GitHub

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# Server
PORT=3000
HOST=0.0.0.0
MCP_PORT=3001
MCP_HOST=0.0.0.0

# Request limits
BODY_LIMIT=1048576          # Max request body size in bytes (default: 1 MB)
MAX_PARAM_LENGTH=200        # Max URL parameter length

# Rate limiting
RATE_LIMIT_MAX=100          # Max requests per window (global)
RATE_LIMIT_WINDOW_MS=60000  # Rate limit window in ms (default: 1 minute)
RELOAD_RATE_LIMIT_MAX=5     # Max /reload requests per window
SEARCH_RATE_LIMIT_MAX=30    # Max /search requests per window

# RPC health check
RPC_CHECK_TIMEOUT_MS=8000   # Timeout per RPC call
RPC_CHECK_CONCURRENCY=8     # Parallel RPC checks
MAX_ENDPOINTS_PER_CHAIN=5   # Max endpoints tested per chain
RPC_MONITOR_LOOP=false      # Set to true to loop monitoring continuously

# Search
MAX_SEARCH_QUERY_LENGTH=200

# Data sources (override to use mirrors or local files)
# DATA_SOURCE_THE_GRAPH=https://raw.githubusercontent.com/Johnaverse/networks-registry/refs/heads/main/public/TheGraphNetworksRegistry.json
# DATA_SOURCE_CHAINLIST=https://chainlist.org/rpcs.json
# DATA_SOURCE_CHAINS=https://chainid.network/chains.json
# DATA_SOURCE_SLIP44=https://raw.githubusercontent.com/satoshilabs/slips/master/slip-0044.md

# Disk cache (stale-first startup)
DATA_CACHE_ENABLED=true
DATA_CACHE_FILE=.cache/chains-api-data.json

# CORS
CORS_ORIGIN=*              # Allowed origins (* for all, or comma-separated list)

# Proxy (optional)
# PROXY_URL=http://proxy.example.com:8080  # HTTP/HTTPS proxy URL (leave empty to disable)
# PROXY_URL=http://user:pass@proxy.example.com:8080  # Proxy with authentication