RPC operator referenceHTTPS / WSS · JSON-RPC 2.0

Avalanche Fuji C-Chain RPC endpoint

Avalanche Fuji C-Chain (chain ID 43113) is served over HTTPS POST JSON-RPC 2.0. Archive nodes back the endpoint, supporting standard EVM methods, historical state, debug_* methods. Free, paid plans, and PAYG include Avalanche Fuji C-Chain.

Network information

Network	Avalanche Fuji C-Chain
Chain ID	43113
Endpoint	`https://rpc.solidrpc.io/YOUR_API_KEY/evm/43113`
Access	Free and paid
Type	Testnet · L1
Native currency	AVAX
Node types	Archive
Methods	standard, debug
Protocol	HTTPS JSON-RPC 2.0. WebSocket unavailable. WebSocket details

Quickstart

Fetch the latest Avalanche Fuji C-Chain block number. Replace YOUR_API_KEY with a key from the dashboard. New accounts start on the Free plan, no card required (see getting started):

Request example

curl https://rpc.solidrpc.io/YOUR_API_KEY/evm/43113 \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Archive access and tracing

There is no separate archive endpoint for Avalanche Fuji C-Chain. Historical queries route to archive nodes automatically by block age, at no surcharge.

The debug_* tracing namespace is available:

Request example

curl https://rpc.solidrpc.io/YOUR_API_KEY/evm/43113 \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"debug_traceTransaction","params":["0xTRANSACTION_HASH",{"tracer":"callTracer"}],"id":1}'

Parity-style trace_* methods are not available on this chain. Use debug_traceTransaction and debug_traceBlockByNumber instead.

Details on archive nodes and tracing.

Limits and errors

Quotas and rate limits are account-wide, not per-chain. Method calls to Avalanche Fuji C-Chain draw from the same response-unit quota and rate limit as every other network. Error bodies are identical everywhere. See the error reference.

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