getMaxShredInsertSlot

getMaxShredInsertSlot is a Solana JSON-RPC method that returns the highest slot a node has inserted shreds for — the stage where the node writes received block fragments into its blockstore on the chain that secures SOL. The result is a single u64 slot number. Read alongside getMaxRetransmitSlot, it shows how current the data this node has actually stored is. Send the request as a JSON-RPC 2.0 POST with an empty positional params array to https://solana.therpc.io/YOUR_API_KEY.

Use cases

• Measure how recent the block data this Solana node has actually inserted into its blockstore is.
• Compare the value against getMaxRetransmitSlot to spot pipeline lag — a wide gap between received and inserted slots points to a node struggling to keep up.

Parameters

This method takes no parameters. Pass an empty array [].

Response

Example request

1curl https://solana.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H "Content-Type: application/json" \
4  -d '{
5  "jsonrpc": "2.0",
6  "id": 1,
7  "method": "getMaxShredInsertSlot",
8  "params": []
9}'

Errors & troubleshooting

Common pitfalls

• This is a node-internal pipeline metric; do not treat it as a confirmed or finalized cluster slot. Use getSlot with a commitment level when you need to know whether a SOL transaction has actually settled.

Supported networks

• Mainnet
• Devnet

See also

• getMaxRetransmitSlot
• getSlot