# Helius MCP

> Helius MCP — Intel Source #19 | L2 Filter

- Skill: `buzzbysolcex/helius-mcp` (Agent Skill)
- Install (CLI): `npx skillmds@latest add buzzbysolcex/helius-mcp`
- Raw SKILL.md: https://api.skillmd.com/api/skills/buzzbysolcex/helius-mcp/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: buzzbysolcex (https://skillmd.com/u/buzzbysolcex)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/buzzbysolcex/helius-mcp

---

# Helius MCP — Intel Source #19 | L2 Filter

## Assignment

- wallet-agent (L2): wallet forensics
- safety-agent (L2): authority checks

## API Key

HELIUS_API_KEY env var — e4b461c1-9cf2-420e-b6dd-7a837a074355

## Endpoints

- Mainnet RPC: https://mainnet.helius-rpc.com/?api-key=${HELIUS_API_KEY}
- Gatekeeper (low latency): https://beta.helius-rpc.com/?api-key=${HELIUS_API_KEY}
- DAS API: https://mainnet.helius-rpc.com/?api-key=${HELIUS_API_KEY}

## wallet-agent Tools (L2 Forensics)

Use these instead of raw RPC chaining:

### getAssetsByOwner — deployer wallet holdings

POST https://mainnet.helius-rpc.com/?api-key=${HELIUS_API_KEY}
{
"jsonrpc": "2.0", "id": "1", "method": "getAssetsByOwner",
"params": { "ownerAddress": "<deployer_wallet>", "page": 1, "limit": 20,
"displayOptions": { "showFungible": true } }
}
→ Returns: full token holdings with metadata

### getTransactionsForAddress — deployer tx history

POST https://mainnet.helius-rpc.com/?api-key=${HELIUS_API_KEY}
{
"jsonrpc": "2.0", "id": "1", "method": "getTransactionsForAddress",
"params": { "address": "<deployer_wallet>", "limit": 50 }
}
→ Returns: parsed tx history, rug patterns, previous deploys
→ NOTE: Requires Developer plan. If 403, fall back to getSignaturesForAddress.

## safety-agent Tools (L2 Authority Check)

### getAsset — mint/freeze authority status

POST https://mainnet.helius-rpc.com/?api-key=${HELIUS_API_KEY}
{
"jsonrpc": "2.0", "id": "1", "method": "getAsset",
"params": { "id": "<contract_address>" }
}
→ Check: authorities.mint (should be null), authorities.freeze (should be null)
→ Scoring: null mint + null freeze = +5 bonus. Active = instant kill.

## Scoring Impact

- Mint authority revoked + freeze revoked → +5 (confirmed via getAsset)
- Deployer wallet clean (no prev rugs) → supports TEAM TOKEN +10
- LP UNVERIFIED penalty (-15) reduced with getAssetsByOwner confirmation

## Rate Limits (Free tier)

- RPC: 10 req/s | DAS: 2 req/s | Credits: 1M/month
- getAsset: 10 credits | getAssetsByOwner: 10 credits
- getTransactionsForAddress: 100 credits (Developer+ only)

## Status: ✅ ACTIVE — Day 11, Mar 5, 2026