Cardano Contract Interaction Explorer

[Proposal setup] Proposal title

Please provide your proposal title

Cardano Contract Interaction Explorer

[Proposal Summary] Budget Information

Enter the amount of funding you are requesting in ADA

200000

[Proposal Summary] Time

Please specify how many months you expect your project to last

12

[Proposal Summary] Translation Information

Please indicate if your proposal has been auto-translated

No

Original Language

en

[Proposal Summary] Problem Statement

What is the problem you want to solve?

Cardano smart contracts lack a standard and intuitive way for developers to understand and interact with validator logic. Unlike Ethereum, which provides ABI interfaces and tools like Etherscan’s Read

[Proposal Summary] Project Dependencies

Does your project have any dependencies on other organizations, technical or otherwise?

No

Describe any dependencies or write 'No dependencies'

No dependancies

[Proposal Summary] Project Open Source

Will your project's outputs be fully open source?

Yes

Please provide details on the intellectual property (IP) status of your project outputs, including whether they will be released as open source or retained under another licence.

MIT License

[Theme Selection] Theme

Please choose the most relevant theme and tag related to the outcomes of your proposal

Infrastructure

[Campaign Category] Category Questions

Describe what makes your idea innovative compared to what has been previously launched in the market (whether by you or others).

Not available anywhere on Cardano today.

There is no:

Redeemer builder

Datum explorer

ABI-like visualization

Contract structure extraction

UTxO parser with type awareness

Ethereum has these tools — Cardano does not.

This proposal brings a first-in-ecosystem functionality.

Describe what your prototype or MVP will demonstrate, and where it can be accessed.

The prototype (MVP) will demonstrate the core functionality and feasibility of the Cardano Contract API Visualizer. It will show that contract schema extraction, API visualization, and redeemer/datum generation can all be done reliably and intuitively.

Automatic Extraction of Contract Schema

The prototype will accept:

an Aiken project

a PlutusTx JSON/Haskell schema

or a compiled .plutus/.cbor script

and will demonstrate:

Datum type recognition

Redeemer type recognition

Constructors & indexes

Fields and their data types

Script parameters

This confirms the “ABI-like” extraction works.

it can be accessed on github

Describe realistic measures of success, ideally with on-chain metrics.

The success of the Cardano Contract API Visualizer will be measured through a mix of adoption metrics, developer impact metrics, and on-chain usage indicators that reflect real-world usage of the tool.

Adoption & Usage Metrics

200+ downloads from the VS Code Marketplace within 3 months

GitHub stars and 5+ external issue reports

[Your Project and Solution] Solution

Please describe your proposed solution and how it addresses the problem

Proposed Solution

We will build the Cardano Contract API Visualizer, the first-ever tool on Cardano that:

Extracts Contract Schema Automatically

Displays a Human-Readable Contract API

Auto-Generates Valid Redeemers & Datums

Provides a UTxO & State Explorer for Contracts

Optional VS Code Extension Integration

[Your Project and Solution] Impact

Please define the positive impact your project will have on the wider Cardano community

Massive Developer Productivity Boost

Constructing redeemers and datums is one of the hardest parts of Cardano development. This tool:

Cuts developer time by 50–70%

Eliminates common encoding errors

Simplifies integration with front-ends

Makes debugging drastically easier

Strengthens Tooling Layer of Cardano

Ethereum has ABI viewers everywhere.

Cardano has none.

This tool brings Cardano to parity with modern dev ecosystems.

[Your Project and Solution] Capabilities & Feasibility

What is your capability to deliver your project with high levels of trust and accountability? How do you intend to validate if your approach is feasible?

We have development experience and deep Cardano ecosystem knowledge. We validate feasibility through:

Modular architecture - each component (templates, testing, deployment) can be developed and tested independently

Early community feedback - engaging Aiken developers during development to ensure tools meet real needs

Incremental delivery - shipping usable templates early while building advanced features

Open-source transparency - all code publicly available from day one for community verification

We're using established technologies (Aiken, Node.js, TypeScript) we're already proficient with, minimizing technical risk.

[Milestones] Project Milestones

Milestone Title

Core Schema Extraction Engine + Basic Viewer UI

Milestone Outputs

Aiken schema parser (reads aiken build --json output)

PlutusTx schema parser (reads Plutus JSON representations)

Basic interface to upload schema files

Early UI that visually displays:

Datum type

Redeemer type

Constructors

Fields & types

Acceptance Criteria

User can upload Aiken schema JSON → UI displays readable type tree

User can upload Plutus JSON → UI parses constructors

No encoding tools yet — just visualization

Runs fully in browser (local mode)

Evidence of Completion

Demo video of UI parsing 2 contract examples

Public GitHub code & instructions

Local prototype accessible at localhost:

Delivery Month

3

Cost

40000

Progress

20 %

Milestone Title

Redeemer & Datum Builder (JSON + CBOR + Hex)

Milestone Outputs

Auto-generated input forms based on contract schema

Redeemer builder

Datum builder

Output formats:

JSON (PlutusData)

CBOR (encoded)

Hex

CLI-ready arguments

Error validation for missing fields or wrong types

Acceptance Criteria

Action list (Deposit, Withdraw, etc.)

Input fields for each constructor

Real-time generated JSON, CBOR & hex output

Redeemer builder works for any Aiken schema

Supports constructor indexes & nested types

Validates data types in the UI

Outputs match Plutus expected format

Evidence of Completion

Demo video: user builds redeemer → sees encoded versions

Public “Redeemer Builder” page live in local UI

Delivery Month

4

Cost

45000

Progress

40 %

Milestone Title

Script UTxO Explorer + Datum Decoder

Milestone Outputs

UI to enter a script address

Fetch UTxOs from Koios / Blockfrost / Maestro

Decode and display datums using extracted schema

Display assets (FT + NFT metadata)

Group UTxOs by constructor / data pattern

Acceptance Criteria

A UTxO dashboard showing:

List of UTxOs

Parsed human-readable datums

Grouping by action/state

Asset holdings

Enter script address → UI fetches UTxOs

Datums decode human-readably

Supports multiple APIs

Handles empty, invalid, or large UTxO sets

Evidence of Completion

Live demo showing reading UTxOs from preprod

GitHub code + API integration tests

Screenshots in documentation

Delivery Month

6

Cost

35000

Progress

60 %

Milestone Title

Full UI Polish + Transaction Template Generator

Milestone Outputs

Full visual polish of the Web UI (improved layout, navigation, and UX flow)

Themed interface (light/dark mode)

Transaction Template Generator that creates ready-to-use scripts for:

cardano-cli transaction build

cardano-cli transaction sign

cardano-cli transaction submit

Ability to insert:

Redeemer outputs

Datum outputs

Script address

Collateral selection

Acceptance Criteria

A fully styled, interactive Web UI with:

Sidebar navigation

Builder pages

UTxO explorer

New Transaction Template page with input fields and one-click code generation

Improved error messages & validation

Evidence of Completion

Demo video showing full UI & template generation

Public GitHub release (v0.9)

Before/after screenshots demonstrating UI improvements

Delivery Month

8

Cost

40000

Progress

80 %

Milestone Title

Documentation Website + Tutorials + Developer Guides

Milestone Outputs

Full structured documentation site (Docusaurus/GitBook/GitHub Pages)

User guides for:

Uploading schema

Building redeemers and datums

Generating CBOR/Hex

Using the UTxO explorer

Generating transaction templates

“Contract Interaction 101” tutorials for Aiken & Plutus developers

Acceptance Criteria

Documentation site is publicly available and covers all features

At least 5 step-by-step tutorials included

Includes contract examples with sample datum/redeemer

Links to the tool and GitHub repo

New user can use the tool end-to-end without external help

Evidence of Completion

Public docs website URL

Video tutorials uploaded

GitHub Pages or Docusaurus site repository

Screenshots embedded in close-out report

Delivery Month

12

Cost

40000

Progress

100 %

[Final Pitch] Budget & Costs

Please provide a cost breakdown of the proposed work and resources

Contract Schema Extraction Engine — 45,000 ADA

Redeemer & Datum Builder (Encoding Engine) — 45,000 ADA

Contract UTxO Explorer & Datum Decoder — 30,000 ADA

Full UI Polish & Transaction Template Generator — 40,000 ADA

Documentation Website, Tutorials, Educational Guides — 40,000

[Final Pitch] Value for Money

How does the cost of the project represent value for the Cardano ecosystem?

Massive Developer Impact Across Cardano

Cardano Has No ABI, No Read/Write Contract Tools

Reduces Wasted Time Across the Ecosystem

A One-Time Investment With Long-Term Benefit

Equivalent Ethereum Tools Cost So much

[Self-Assessment] Self-Assessment Checklist

I confirm that evidence of prior research, whitepaper, design, or proof-of-concept is provided.

Yes

I confirm that the proposal includes ecosystem research and uses the findings to either (a) justify its uniqueness over existing solutions or (b) demonstrate the value of its novel approach.

Yes

I confirm that the proposal demonstrates technical capability via verifiable in-house talent or a confirmed development partner (GitHub, LinkedIn, portfolio, etc.)

Yes

I confirm that the proposer and all team members are in good standing with prior Catalyst projects.

Yes

I confirm that the proposal clearly defines the problem and the value of the on-chain utility.

Yes

I confirm that the primary goal of the proposal is a working prototype deployed on at least a Cardano testnet.

Yes

I confirm that the proposal outlines a credible and clear technical plan and architecture.

Yes

I confirm that the budget and timeline (≤ 12 months) are realistic for the proposed work.

Yes

I confirm that the proposal includes a community engagement and feedback plan to amplify prototype adoption with the Cardano ecosystem.

Yes

I confirm that the budget is for future development only; excludes retroactive funding, incentives, giveaways, re-granting, or sub-treasuries.

Yes

[Required Acknowledgements] Consent & Confirmation

I Agree

Yes