The official SDK for the Substrate API
Substrate-connect to Smoldot clients. Using either substrate extension with predefined clients or an internal smoldot client based on chainSpecs provided.
Substrate-connect well known chain specifications
Selected dispatchables of Substrate pallets, to be re-exported by txwrappers.
JS/TS development environment configuration and dependencies for @substrate projects.
This TypeScript package provides low-level bindings to the [Substrate JSON-RPC Interface](https://paritytech.github.io/json-rpc-interface-spec/introduction.html), enabling interaction with Substrate-based blockchains.
BitGo SDK coin library for Substrate base implementation
TS / Node API for Substrate/Polkadot based apps running on Ledger devices
Types for Dock's Substrate node
Substrate types used in Equilibrium parachain.
Basic types and interfaces. Typedoc: [https://qiwi.github.io/substrate/types/](https://qiwi.github.io/substrate/types/)
Light client that connects to Polkadot and Substrate-based blockchains
Substrate types used in InterBTC parachain
Substrate — multi-agent orchestration daemon for AI coding agents
BitGo SDK coin library for Substrate base implementation
Light client that connects to Polkadot and Substrate-based blockchains
A list of all available Substrate networks and their applicable prefixes
Substrate types used in Polymesh chain
Off-chain calculations for @substrate/api-sidecar.
Data fetcher and mappings executor for substrate chains
Clypto - Toolbox substrate
Spec version explorer for substrate based chains
Substrate metadata tools for squid framework
SDLC-specific orchestration for the [Substrate](https://github.com/johnplanow/substrate) platform. This package contains the phase-aware handlers, graph orchestrator, DOT pipeline topology, verification pipeline, learning loop, and unified run manifest th
Stub to squat the substrate name
Substrate Manager, a CLI tool for Substrate-based blockchain development.
Json-rpc client with helper functions compatible with any Substrate node
Substrate-deps, a command line tool for managing Parity Substrate runtime pallet dependencies.
Substrate adapter for Apex SDK
Reference implementation of the H33 substrate response attestation verifier. Verifies X-H33-Receipt HTTP headers against three post-quantum signature families (Dilithium ML-DSA-65 + FALCON-512 + SPHINCS+-SHA2-128f) over the H33 58-byte substrate primitive. Standalone, no internal H33 dependencies, WASM-target-compatible.
Privacy-first ATProto substrate primitives: type architecture, audit vocabulary, inter-service auth, and encryption hook surfaces
When a candidate runtime is submitted to a Substrate-based chain such as Polkadot or Substrate, this WASM blob is hashed. The proposal hash that can be seen is actually the prefixed and hashed runtime. This utility does the same and allows calculating the proposal hash of a new runtime off-chain. You do not need a node, nor even an internet connection to use this utility.
H33 Model Context Protocol server — exposes the H33 post-quantum substrate, biometric auth, ZK proofs, triple-key signing, BotShield, HICS scoring, and HATS governance to MCP-capable AI coding agents (Claude Code, Cursor, Codex, Aider). Native Rust. The canonical MCP surface for H33.
Command-line client for the Nucleus substrate. Single binary `nucleus-substrate` driving offline receipt verification (signature + all-projections), live hub fetches, and counter inspection.
Pure Rust rewrite of Cydia Substrate + And64InlineHook — cross-architecture inline function hooking for Android
Categorical core of the Nucleus substrate: Session (the agent action), Projection (the verifiable record functor — Identity, Capability, Flow, Economic, …), and Receipt (the Ed25519-signed colimit). Lightweight, no runtime deps. See docs/architecture/substrate.md.
Common utilities and libraries for substrate in ruby
Ruby Substrate RPC Client
Ruby Substrate RPC Client
Detect file types and extract text from documents
A substrate nft tracker using scale.rb
A better cli tool for substrate development
This gem includes a ruby implementation of SCALE Codec, a general Substrate Http JSONRPC Client, and, a general Substrate Websocket JSON-RPC Client.
Tree-sitter-backed TOML substrate behavior for the Structured Merge TOML family.
Tree-sitter-backed Ruby family substrate for Structured Merge.
Pre-v1 Ledger package for Igniter: immutable facts, histories, receipts, replay, changefeed, compaction, and protocol-facing storage surfaces.
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