4.2.0 : cardano-node-11 support

This release builds on v4.1.2 with a platform upgrade to Cardano node 11, chain-query API cleanup, and stronger integration test coverage.

Highlights

• Upgraded Kuber packages and Docker defaults to support cardano-node 11.0.1 and cardano-api ^>= 11.0.
• Added documented support for the /api/v3/era-history endpoint.
• Removed the older LocalChainQuery interface in favor of the current chain-query path used across the library, server, and client.
• Expanded integration and API test coverage around node-v11 compatibility and query behavior.

Changes

Platform and Compatibility

• Updated package constraints across the core Kuber packages for the Cardano node 11 toolchain.
• Raised the default Cardano node image in docker-compose.yml to cardano-node 11.0.1.
• Refreshed cabal configuration and build inputs required by the newer network and ledger packages.

API and Library Changes

• Added /api/v3/era-history to the published Kuber API reference docs.
• Simplified chain-query internals by removing LocalChainQuery and aligning the HTTP/client and local-node codepaths.
• Updated transaction, parser, and data-model handling for the Cardano node 11 era and import changes.

Quality

• Added shared integration test setup and broadened coverage in API, parser, and transaction tests.
• Fixed tests and supporting fixtures to match the updated query and transaction behavior.

Compatibility

• cardano-api: 11.0
• cardano-node: 11.0.1

v4.0.0 : Docs and tooling

Highlights

• Reorganized and refreshed the docs, especially the Hydra and tx builder references.
• Added common Kuber functions to the Hydra JS client docs.

Fixes

• Prevent insufficient input errors in Hydra by starting tx fee at 0 for already balanced transactions.
• Refactored and fixed decommit API endpoints in kuber-hydra.

Docs and tooling

• Added a local devnet reset script and setup helpers for Hydra clusters.
• Added Cardano node configs and genesis files for the devnet cluster.
• Improved credential generation and UTxO seeding scripts.
• Added yarn doc:validate.
• Improved getting started content and navigation.
• Fixed broken links for kuber-hydra and kuber-client.
• Updated the README and cleaned up docs organization.

Libraries

• cardano-api:10.1
• kuber-client:v3.3.6

Tested with

• hydra-node:1.2.0

v4.0.0-rc1: Hydra Integration

This release introduces kuber-hydra, a dedicated module that adds full Hydra head
support to Kuber. The new module exposes a set of command and query APIs for
committing, decommitting, closing, fan‑out, contesting, and querying the state of a
Hydra head, along with a transaction‑builder helper and APIs.

Note : kuber-hydra executable additionally exposes all layer1 endpoints making it versatile for both hydra and l1 interaction.

DependsOn

• cardano-api:10.1

Tested with

• hydra-node:0.22.0-65b4c1201e7533d4269d42e2ca1c8b53f999454f

New moudle: kuber-hydra

• Added new module kuber-hydra with:
  • Command endpoints under /api/hydra:
    • POST /hydra/init
    • POST /hydra/abort
    • POST /hydra/commit
    • POST /hydra/decommit
    • POST /hydra/close
    • POST /hydra/contest
    • POST /hydra/fanout
    • POST /hydra/tx
    • POST /hydra/submit
  • Query endpoints under /api/hydra/query:
    • GET /hydra/query/utxo
    • GET /hydra/query/head
    • GET /hydra/query/protocol-parameters
    • GET /hydra/query/state
    • GET /hydra/query/commits
• Implemented a Hydra transaction‑builder that:
  • Selects inputs/outputs
  • Handles optional signing keys
  • Filters UTxOs by txin and address
• Updated Hydra‑specific documentation and added sequence diagrams illustrating
  typical Hydra head interactions.

Release Docker images

• dquadrant/kuber-hydra:v4.0.0-rc1
• dquadrant/kuber:v4.0.0-rc1

Client Package

• kuber-client v3.3.2

3.1.1 : Conway era minor fixes

Fixes

• Collateral selection logic now prefers 5Ada inputs
• Multiple collateral inputs if collateral is not sufficient with 1 utxo.

Release Docker image

dquadrant/kuber:3.1.1

3.1.0: Stable Conway Era Support

DependsOn

• cardano-api:9.2.0.0

Release Docker Image

• dquadrant/kuber:3.1.0

Changes: kuber-server

• new endpoint /api/v3/health now returns node's current tip and secondsSince last block was minted. If lastBlock was seen before 300 secs, status code will be 503

Changes: lib:kuber

• when not set, kuber will automatically fill in following field by querying ledger state
  • proposal.deposit
  • proposal.previousGovActionId
  • proposal.executionUnits
  • certificates.deposit

Fixes

• Fix catchError function on Unhandled error
• Add exception handler on txSubmission
• Use FrameworkError explicitly to improve error handling
• Make Kontract instance of MonadError and Alternative
• Show proper error message for plutus error
• add ex-unit test
• Fix fromJson of proposal field
• fix utxoModal parsing problem
• PlutusV3 Support

Known Issues :

• lib:kuber : Kontract will omit following fields when using RemoteKuberConnection : $.proposal[s], $.votes[s] or $.certificate[s]

Litmiations:

• script dreps are not supported
• voting with script key is not supported

3.0.0-rc4: Bug Fixes, New Features & Kuber-Client Updates

New Features:

• Introduced kQueryCurrentEra functionality to retrieve the current era information.
• Added kQueryStakeDeposit feature for querying stake deposit details.
• Implemented kQueryDrepState functionality for querying DREP state.
• Enabled automatic withdrawal amount evaluation for stake deregistration during Conway Era.

Bug Fixes:

• Resolved an issue in kQueryUTXOByAddress where only one UTXO was returned. Parsing issue has been fixed to ensure correct handling.
• Fixed an error in kCalculateMinFee related to single fork encoded hardcoded era Conway.
• Implemented functionality for TxOutDatumInTx to support datum in Auxiliary data.
• Enabled kBuildTx functionality to work on RemoteKuberConnection.

Updates:

• Updated toJSON parsing for TxInputScriptTxIn, which includes updates to JSON schemas for UTXO.

3.0.0-rc2 : Tx build bug fix , Add tests

Changes

• Fix Bug : Server got irresponsive after requesting /api/v1/tx with plutus included transaction
• Add tests to validate that the kuber apis are working via LocalNode Socket connection.

Known Issues:

• Kontract is not working via RemoteKuberConnection
• If node is at Babbage era when kuber-server starts, after node reaches Conway era, restart is required to enable Conway features.
• $.validtyStart is broken and is ignored.

Docker image

dquadrant/kuber:3.0.0-rc2

v3.0.0-rc1 : Full Refactor and ConwayEra Support

v3.0.0-rc1 : Full Refactor and ConwayEra Support

Changes on kuber-server

• Add new chain-query api-endpoints.
  • GET /api/v3/protocol-params
  • GET /api/v3/chain-point
  • GET /api/v3/utxo
  • GET /api/v3/system-start
  • GET /api/v3/genesis-params
• Update default healthcheck url in docker image. (/api/v3/chain-point is used for healthcheck )
• Server starts by querying NodeEra and enables fields based on BabbageEra or ConwayEra
• TxBuilder json now supports following new fields.
  • $.proposal[s] : Conway Era Governance proposals.
  • $.votes[s] : Conway Era votes.
  • $.certificate[s] : Registration and dregistration certs only for Conway era. (Not available when node is running in babbage era).

Release Docker image [supports only x86_64 architecture]

dquadrant/kuber:3.0.0-rc1

Known Issues:

• If node is at Babbage era when kuber-server starts, after node reaches Conway era, restart is required to enable Conway features.
• $.validtyStart is broken and is ignored when building transaction.

Changes on Kontract-example [WIP]

• Introduced new package to showcase usage of Kontract

Changes on lib:kuber

• Update code comments for better haddock docs generation
• Implement both ToJson and FromJson for all the entities used in api
• Reorganize code and introduction of Kontact for offchain code.
• Support For ConwayEra [BREAKING change ]
• TxBuilder is now parametrized on era suppporting Babbage and Conway eras, with IsTxBuilderEra constraint.
• Kuber Offchain code required Local Node Socket. WIP support running kuber code by connecting to kuber server
• Remove ChainConnectInfoand related classes. Instead, use LocalNodeConnectInfo CardanoMode directly.

2.3.2 - Minor Api Fixes

API Changes

• Add endpoint /api/v1/chaintip for chaintip query ead85f8
• Fix inlineDatum boolean option in output , that was previously set as inline only af5f758

Release Docker Image

dquadrant/kuber:2.3.2

Kuber 2.3.1 - Ui and Api fixes

API changes

• Support setting Fee explicitly c0f483a
• BugFix for reference scripts in input missing in body f9cabf4

UI changes

• Update pubkeyHash inspector and output tab 97dacba
• Show full event log on output on transaction submission e0c8559
• fix dependency issue with monaco-editor 2c68e64
• Fix 'Auto' network URL selection f120c02
• Fix sig script linting 01d4eb7
• Update/redesign address sidebar 6cd7589
• Fix error message display on submitting transaction e456782
• Fix oscillation in fee balancing resulting in error 9dd1251
• Fix inlineDatum option in output af5f758

Release Docker Image

dquadrant/kuber:2.3.1