A coding guide for understanding Solana's architecture and execution engine. It covers concepts such as accounts, program-derived addresses, transaction processing, validators, and token features.

Use it to study or explain Solana protocol design, transaction fees, validator operations, data handling, program development, and DeFi foundations.

It helps an agent explain how Solana works internally instead of only showing how to call its APIs.

svm — Skill for Claude Code and Codex by helius-labs/core-ai

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add helius-labs/core-ai --skill svm

Clone the repo

git clone --depth 1 https://github.com/helius-labs/core-ai

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/helius-labs/core-ai/svm/github.svg)](https://agentmods.dev/skills/helius-labs/core-ai/svm)

Your own site

<a href="https://agentmods.dev/skills/helius-labs/core-ai/svm"><img src="https://agentmods.dev/badge/skills/helius-labs/core-ai/svm/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/helius-labs/core-ai/svm"><img src="https://agentmods.dev/badge/skills/helius-labs/core-ai/svm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,177 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 92% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.02177
Opus 5.5	$0.00000	$0.00871
Sonnet 5.5	$0.00000	$0.00435
Haiku 4.5	$0.00000	$0.00218

Measured yesterday against content hash c2d9c1ccf7b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

svm scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

92% identical to svm — 40 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/svm/SKILL.md · 186 lines

How it starts

The opening of the file, as written. The whole thing — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.

name: svm version: "1.2.0" description: > Explore Solana's architecture and protocol internals. Use this skill when: understanding the SVM execution engine, learning about the account model and PDAs, exploring consensus (Proof of History, Tower BFT), researching transaction processing and local fee markets, studying validator economics, investigating the data layer (Geyser, shreds), reviewing program development frameworks, or analyzing token extensions and DeFi primitives. Requires helius-mcp MCP server for knowledge tools.

SVM — Understand Solana's Architecture

You are a Solana protocol expert. Use the Helius MCP tools to fetch live content from the Helius blog, Solana docs, SIMDs, and validator source code. Your job is to explain Solana's architecture accurately and deeply — the "how" and "why" behind design decisions, not how to build with APIs (that's the the Helius skill skill).

MCP Router Surface

Helius MCP now exposes 10 public tools total: 9 routed domain tools plus expandResult. heliusAccount, heliusWallet, heliusAsset, heliusTransaction, heliusChain, heliusStreaming, heliusKnowledge, heliusWrite, heliusCompression, and expandResult.

This skill still names Helius action names such as fetchHeliusBlog, searchSolanaDocs, getSIMD, or readSolanaSourceFile. All of them route through heliusKnowledge. Translate them to router calls by keeping the action name and choosing the right domain tool.

Examples:

heliusKnowledge({ action: "fetchHeliusBlog", slug: "..." })
heliusKnowledge({ action: "getSIMD", number: "0096" })
heliusKnowledge({ action: "readSolanaSourceFile", path: "..." })

Prerequisites

CRITICAL: Check that the Helius MCP public tools are available — this skill routes every content fetch through heliusKnowledge. If they are NOT available, STOP and tell the user:

You need to install the Helius MCP server first:
npx [email protected]  # configure in your MCP client
Then restart your AI assistant so the tools become available.

Read the full file on GitHub · 186 lines

Files

What ships with it

13 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday Changed c2d9c1ccf7b5
1mo ago Changed b37c11d53ee7
1mo ago First seen · 186 lines · 0 tokens per session scan A 025e89e93494

Subscribe to this mod's changes

svm is a skill published in the GitHub repository helius-labs/core-ai (29 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,177 tokens. A static security scan graded it A with 0 findings. It is 92% identical to svm, differing in 40 lines, and is treated as a copy.

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