dash-platform

Assist with Dash Platform development: data contracts, Rust SDK, JS/TS SDK, identities, documents, and queries.

Setup

In dashpay/platform repo: bash scripts/setup-ai-agent-environment.sh

Rust — not on crates.io, use git dep:

[dependencies]
dash-sdk = { git = "https://github.com/dashpay/platform", branch = "master" }
dpp = { git = "https://github.com/dashpay/platform", branch = "master" }

JS/TS:

npm install @dashevo/evo-sdk

Lexicon

lexicon/ contains keyword lookup tables for Dash Platform APIs. To answer questions:

1. Grep the relevant lexicon/*.md file for keywords matching the user's query
2. Find the Src or Docs column link in matching rows
3. Expand the link prefix (see table below) to a full URL and WebFetch it for details

File	Content
lexicon/rust.md	Rust SDK types, functions, patterns (2700+ entries, includes dapi-grpc bindings)
lexicon/js.md	JS SDK types, functions, patterns
lexicon/contract.md	data contract types, JSON Schema, DPP, document types
lexicon/grpc.md	gRPC services, messages, endpoints

Link prefixes:

Pre	URL
P:	https://github.com/dashpay/platform/blob/master/packages/
R:	https://dashpay.github.io/platform/api/rust/
G:	https://dashpay.github.io/platform/api/grpc/
B:	https://dashpay.github.io/platform/
T:	https://github.com/dashpay/dash-evo-tool/blob/master/
Y:	https://github.com/PastaPastaPasta/yappr/blob/master/
D:	https://github.com/PastaPastaPasta/dash-bridge/blob/master/
E:	https://github.com/dashpay/evo-sdk-website/blob/master/

---

Data Contracts

Structure

• Defines document types via JSON Schema; unique ID from owner identity + entropy
• Contains ≥1 document types with indexes for querying
• Versionable (owner can update; old versions remain queryable)

Document Types

Each type defines:

• type: "object" + properties (JSON Schema)
• indices — index definitions for Platform queries
• required — required fields
• Optional: additionalProperties: false, $comment, transient, documentsKeepHistoryContractDefault

Index Design

• name + properties array (each: name + asc/desc)
• unique: true for uniqueness constraints
• First property = range scan key in compound indexes
• Max 10 per document type
• System props: $ownerId, $createdAt, $updatedAt

DPNS

Maps names → identities:

• domain type: label, normalizedLabel, normalizedParentDomainName, records
• preorder type: commit-reveal registration
• Normalized (lowercase) for uniqueness

Contract Security

• Always set additionalProperties: false
• Validate schemas before submission
• Consider size limits and storage costs
• Contract updates must be backward-compatible (add props OK, remove/rename breaks)

---

Rust SDK

Core Types

Type	Crate	Purpose
Sdk / SdkBuilder	dash-sdk	Entrypoint, builder pattern
Identity	dpp	Platform identity with keys
DataContract	dpp	JSON Schema contract def
Document	dpp	Data instance in contract
Identifier	dpp	32-byte platform object ID
AddressList	dash-sdk	DAPI masternode addresses

CRUD via Fetch Traits

use dash_sdk::platform::{Fetch, FetchMany, Identifier};

let identity = Identity::fetch(&sdk, id).await?;       // Ok(None) if missing
let docs = Document::fetch_many(&sdk, query).await?;

Key Patterns

• Proofs: All queries return cryptographic proofs, verified automatically (security advantage over JS SDK)
• Queries: DriveQuery → where clauses, order, limit → convert to DocumentQuery
• GroveDB: Hierarchical authenticated storage; SDK abstracts it — direct use rarely needed
• Async: Fully async, use tokio
• Errors: dash_sdk::Error — connection, proof failure, broadcast failure, query errors

Rust Examples

dash-evo-tool demonstrates: identity registration, DPNS names, contract CRUD, document CRUD, tokens, multi-network support.

---

JS/TS SDK

Deprecated: js-dash-sdk / dash npm package — The js-dash-sdk (npm: dash) is deprecated and unsupported, replaced by js-evo-sdk (npm: @dashevo/evo-sdk). If you encounter require('dash'), new Dash.Client(), or js-dash-sdk imports: alert the user, recommend migrating to @dashevo/evo-sdk, and do NOT generate new code using the legacy package.

Client Init

import { EvoSDK } from '@dashevo/evo-sdk';

const client = new EvoSDK({
  network: 'testnet',
  wallet: { mnemonic: '...' },
});
await client.connect();

Operations

// Identity
const identity = await client.platform.identities.register();
await client.platform.identities.get(identityId);

// Contract
const contract = await client.platform.contracts.create({
  note: { type: 'object', properties: { message: { type: 'string', maxLength: 256 } }, additionalProperties: false }
}, identity);
await client.platform.contracts.publish(contract, identity);

// Document
const doc = await client.platform.documents.create('contractId.note', identity, { message: 'Hello' });
await client.platform.documents.broadcast({ create: [doc] }, identity);
const docs = await client.platform.documents.get('contractId.note', {
  where: [['$ownerId', '==', identity.getId()]], orderBy: [['$createdAt', 'desc']]
});

// DPNS
await client.platform.names.register('alice.dash', { dashUniqueIdentityId: identity.getId() }, identity);
const name = await client.platform.names.resolve('alice.dash');

WASM-DPP (Browser)

import { DashPlatformProtocol } from '@dashevo/wasm-dpp';
const dpp = new DashPlatformProtocol();

Provides: contract/document validation, state transition creation/signing, identity key management.

JS Security

Pure JS SDK has NO client-side proof verification. For security-critical apps use wasm-sdk (has proofs) or validate server-side with Rust SDK.

Wallet

Built-in: HD derivation from mnemonic, UTXO management, tx creation/broadcasting, balance queries.

JS Examples

• PastaPastaPasta/yappr — social app, document CRUD
• PastaPastaPasta/dash-bridge — bridge application
• dashpay/evo-sdk-website — SDK docs with examples