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Sigil

Sigil is a command-line AI coding agent that converts plain-English descriptions of Solana programs into Anchor project files, including Rust source, an IDL and configuration files. Its Claude agent designs accounts and instructions, then an emitter assembles the project.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Sigil — OpenViST project profile in Coding Agents.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Sigil when you want a CLI-generated first draft of a Solana Anchor project from a natural-language specification, especially when a listed template is close to the program you have in mind.

Who it is for

  • Solana developers drafting Anchor program scaffolds from feature descriptions.
  • Rust and Anchor developers who want a generated starting point for common program patterns such as staking, vaults, tokens, NFTs or governance.

Documented uses

  • Turn a plain-English Solana program description into Rust source and Anchor project configuration.
  • Draft account structures, instruction handlers and PDA-related design from a program brief.
  • Generate an IDL and project files for a proposed program.
Before you choose

Requirements & limits

The documented workflow uses a CLI and requires an ANTHROPIC_API_KEY. The repository identifies the project as MIT licensed.

  • Sigil is a developer tool that requires repository setup rather than a documented hosted app workflow.
  • The README describes a Claude agent and lists claude-opus-4-6 as the default model.
  • Generated project configuration defaults to devnet and Anchor version 0.31.0.
  • The README describes design validation, including checks for duplicate instruction names and warnings for apparent missing signer authority; these are not a substitute for independent review and testing.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up Sigil and generate an Anchor project

Install the repository's dependencies, configure the required Anthropic key, build Sigil and submit a program description.

Before you start

  • Bun
  • An ANTHROPIC_API_KEY
  • The Sigil repository

Steps

  1. Clone the repository and change into its directory.

  2. Run bun install.

  3. Copy .env.example to .env and add ANTHROPIC_API_KEY.

  4. Run bun run build.

  5. Use sigil generate with a plain-English Solana program description.

Expected outcome

Sigil generates an Anchor project containing program code and related project files.

Guide limitations

  • Generated code and validation output still require appropriate developer review and testing.
  • The README's clone command uses a placeholder repository URL.
Documentation 1 ↗
COMPARE OPTIONS

Compare options for AI coding assistance

These projects document a common task and share a project role. This is a source-based comparison, not an execution benchmark or a guarantee of interchangeability.

ProjectDocumented purposePlatformAccess and requirements
SigilTurn a plain-English Solana program description into Rust source and Anchor project configuration.CLIThe documented workflow uses a CLI and requires an ANTHROPIC_API_KEY. The repository identifies the project as MIT licensed.
LlmcodeInspect a project's directory structure with `/tree`.CLIThe documented setup requires an API key and supports an API base URL and model setting. The project is open source under Apache-2.0.
Klaat CodeOpen a project directory for terminal-based coding assistance.CLI, ServerThe README provides a global npm installation command and documents browser sign-in with a KlaatAI account. It also identifies the repository as open source under Apache 2.0.
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
14 October 2026
Original website title
SigilBuild/SigilBuild · Official homepage title · retained in its source language
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