Documentation

Getting Started with @c7-digital/ledger This guide will help you set up and start using the @c7-digital/ledger package. Prerequisites - Node.js >= 18.0.0 - pnpm >= 8.0.0 Installation For Development pnpm install Building the Package pnpm build This will: 1. Fe

@c7-digital/ledger OpenAPI v2 compatible Daml ledger client (that could replace @daml/ledger) for the new Canton JSON API v2. Overview This package provides a TypeScript client for interacting with Canton's JSON Ledger API v2, which replaces the deprecated v1 API that @daml/ledger targets.

Version-Aware Template Registry Usage This document explains how to use the opt-in version-aware template registry feature in the Ledger API. Overview The Ledger class now supports an optional versionedRegistry that allows you to work with multiple versions of DAML templates simultaneously. W

@c7-digital/pqs A typed TypeScript client for the Canton Participant Query Store (PQS). PQS projects a participant's ledger into PostgreSQL and provisions a SQL read API — the table-valued functions active, creates, archives, and exercises over JSONB payloads. This package wraps those

Getting Started with @c7-digital/react This guide will help you set up and start using the @c7-digital/react package. Prerequisites - Node.js >= 18.0.0 - pnpm >= 8.0.0 - React >= 18.0.0 Installation For Development pnpm install Important: This package depends on @c7-digi

@c7-digital/react React hooks for Daml ledger integration using Canton JSON API v2 Features - 🔧 Type-safe: Full TypeScript support with branded types from the Canton API - ⚡ Real-time: WebSocket streaming for live contract updates - 🎣 React Hooks: Modern React patterns — useQuery

Ledger Type safe interactions with Canton node via JSON API. - C7/Ledger - C7/React - C7/Scribe Supported versions Each @c7-digital/ledger release targets one

Daml contract source - C7-Digital/c7_ledger/scribe/e2e/daml/daml/TestModel.daml module TestModel where import DA.Time (RelTime, seconds) -- | A simple asset template for e2e testing. template Asset with owner : Party description : Text value : Int where signatory owner choice Transfer : Cont

@c7-digital/scribe Transform raw DAML codegen output into unified, modern ESM TypeScript packages for use with @c7-digital/ledger. What it does dpm codegen-js produces raw TypeScript/CommonJS packages -- one per DAR -- with global template registration, mixed import conventions, and self-re

Canton Network MCP Server When developers use AI tools to learn Canton, they get recommended deprecated tools and outdated documentation links. This MCP integration solves that: it gives AI assistants a curated, auto-updating knowledge base of Canton's dev stack, plus live lookups against the

Daml Skill for Claude A Claude skill that gives any Claude/ Claude Code conversation correct knowledge of the Daml smart contract and Canton Network. Useful for developers writing, reviewing, or debugging Daml contracts. What it does When you ask Claude about Daml templates, choices, authorizat

Canton 3.5 Reference What's new and breaking in 3.5 daml CLI is gone, use dpm for everything The Daml Assistant (daml CLI) is fully removed in SDK 3.5. All commands are now dpm. | Old command | New command | |---|---| | daml new <name> | dpm new <name> | | daml build | dpm bu

Daml Language Reference Table of contents 1. Native types 2. Data types (records, variants, Optional) 3. Functions and control flow 4. Templates — structure 5. Signatories and observers 6. Choices — full anatomy 7. Daml Script — testing API 8. Interfaces and interface instances 9. Contract keys

Daml Design Patterns Canonical patterns for multi-party workflows and financial settlement on Canton Network. Each entry covers when to use it, the key structural insight, and a minimal code skeleton. 1. Propose-Accept When to use: Two parties need to agree on a shared contract. One propose

Daml Smart Contract Expert You are an expert in writing correct, idiomatic Daml code for the Canton Network. Your job is to help users write contracts that actually compile, pass authorization, and behave as intended — not just syntactically plausible code. Read references/language.md before ans

@ftptech/canton-agent-wallet A self-custody Canton wallet + x402 autopay for AI agents. The agent holds its own Ed25519 key and pays for x402-gated resources on the Canton Network on its own — the hard parts of Canton (a party must be hosted on a validator, and its API is authed) are hidden behind

@ftptech/canton-agent-wallet Self-custody Canton wallet with x402 autopay, as a CLI and a library. The agent holds its own Ed25519 key. A facilitator relay onboards the party and prepares transactions over plain HTTPS, so no Canton node is needed; the relay never signs. Quickstart npm i

Live MainNet prepared-transaction fixtures Two REAL PreparedTransaction captures from Canton MainNet, supplied by the integrator, used as the conformance ground truth for the validator-provided TransferPreapproval work. Both were interactive-prepared and deliberately NEVER signed, committed, o

@ftptech/x402-canton-client Payer-side SDK for Canton x402: a fetch wrapper that answers a 402 with a signed Canton transfer and retries. The facilitator submits the transfer, so the payer needs no Canton node. Install npm i @ftptech/x402-canton-client Example The shortest path

@ftptech/canton-x402-mcp A self-custody Canton x402 wallet as a local MCP server. The owner connects it once; the agent then calls tools and never sees the key. Built on @ftptech/canton-agent-wallet. Prefer not to run anything? The hosted server at https://pay.ftptech.xyz/mcp

x402-canton-agent Pay x402 endpoints on Canton from a script, a backend or an AI agent. The code of each package matches its npm release. | Package | Version | What | | --- | --- | --- | | @ftptech/canton-agent-wallet | 2.4.0 | Self-custody wallet: CLI and mak

Test fixtures Real Canton MainNet prepared transactions, base64. The packages/core tests read them from this path. They come from the agent wallet's fixtures in x402-canton-agent. None of them can authorize anything: each was either never sign

@ftptech/x402-canton-core Shared TypeScript types and helpers for the Canton x402 protocol stack. Used by @ftptech/x402-canton-client, @ftptech/canton-agent-wallet, @ftptech/x402-canton-express, and @ftptech/x402-canton-next. Install npm i @ftptech/x402-canton-core What's

@ftptech/x402-canton-ledger Shared Canton ledger primitives used by @ftptech/x402-canton-client, @ftptech/canton-agent-wallet and the FTP facilitator. Install npm i @ftptech/x402-canton-ledger Compatibility Canton 3.6 participants need 0.6.2 or later. 0.6.1 sends the ACS filt

x402-canton-core Core libraries for the Canton x402 stack: the shared protocol types and the Canton ledger primitives that the merchant middleware and the payer client build on. Packages | Package | Version | Purpose | | --- | --- | --- | | [@ftptech/x402-canton-core](https://www.npmjs.com/pa

Compatibility Matrix What versions of the runtime, the Canton platform, the x402 wire protocol, and the published packages work with the facilitator in this repo. Re-check it before any platform upgrade. Snapshot date: 2026-10-23. Code: core 1.4.0, ledger 0.6.2, facilitator 0.0.12. 1. Runtime a

Facilitator Deployment How to build, configure, and run the Canton x402 facilitator in production. The facilitator is the server-side /verify and /settle service that resource servers delegate payment validation and settlement to. It is a stateless Fastify process plus a Postgres database, shi

Maintenance Playbook Operating procedures for the Canton x402 stack after launch: how to ship a version, what to check when the platform underneath changes, how to track audit remediation, and what to do when settlement stops working. Contents: 1. [Version upgrade procedure](#1-version-upgrade-pro

Test fixtures Not a package. src/__fixtures__/ holds real MainNet prepared transactions that the core and facilitator tests decode. They live at this path because the tests read them from packages/agent-wallet/src/__fixtures__/, as in the upstream monorepo. Prepared but never signed, or alread

Live MainNet prepared-transaction fixtures Two REAL PreparedTransaction captures from Canton MainNet, supplied by the integrator, used as the conformance ground truth for the validator-provided TransferPreapproval work. Both were interactive-prepared and deliberately NEVER signed, committed, o