Cardano Node API

DismissedThe project is no longer needed now that we have wide adoption of the UTxO RPC interface. (2026-10-23)

Otherwise: Breaks after HF

On the devnet

• fail gouroboros cannot tell the era of an ordinary Dijkstra transaction · 1368155 with gouroboros v0.213.9 and patches
• fail txtop and cardano-node-api before and after the gouroboros upgrade · 1368155 pinned (gouroboros 0.202.7)
• pass txtop and cardano-node-api before and after the gouroboros upgrade · 1368155 with gouroboros v0.213.9 and patches · Only after patching adder and its own code; UTxO, era, tip, parameter and mempool-size queries.

Blocked by

• upgradegouroboros@0.202.7<v0.213.0node-to-client-protocoltransaction-encodingplutus-languagestake-pool-registrationprotocol-parameters
• upstream fixgouroborosblock-encodingera-identity

Waiting on

• adderin-progress, no verdictblock-encodingtransaction-encoding
• utxorpcin-progress, no verdictblock-encodingtransaction-encoding

Lead decisions

• confirmed· addernode-to-client-protocol

  Chain-sync and UTxO RPC watch endpoints consume Adder pipeline events, and Adder's node-to-client input comes from a gouroboros release that cannot negotiate V23.

  • internal/node/chainsync.go:21"github.com/blinklabs-io/adder/event"
  • internal/utxorpc/watch.go:24"github.com/blinklabs-io/adder/event"

• confirmed· gouroborosnode-to-client-protocolblock-encoding

  Its whole purpose is a node-to-client bridge (chain-sync, state query, tx monitor, tx submission) on gouroboros v0.202.7, which stops before V23. The repository is archived.

  • internal/node/node.go:40ouroboros.WithNodeToNode(false),
  • internal/node/node.go:42ouroboros.WithChainSyncConfig(buildChainSyncConfig(*connCfg)),

• confirmed· gouroborosera-identitytransaction-encodingplutus-languagestake-pool-registrationprotocol-parameters

  Decodes submitted transactions and reads current protocol parameters through pre-Dijkstra ledger types.

  • internal/utxorpc/submit.go:550txType, err := ledger.DetermineTransactionType(txRawBytes)
  • internal/utxorpc/query.go:61protoParams, err := oConn.LocalStateQuery().Client.GetCurrentProtocolParams()

• undetermined· gouroborosconsensus-participationtransaction-rules

  Consensus and ledger-rule surfaces are not exercised by an identifiable shipped path; left to execution.