Helius MCP server

by mrfentmen·io.github.mrfentmen/helius-mcp·v1.0.1

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Helius Solana API: balances, transactions, NFTs, token metadata.

C65/100grade C

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Safety scan

C65/100

full report

Adoption

Growing

0 stars464 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Helius tools (5)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

get_balances
Solana wallet balances via Helius: SOL plus every token holding with amounts and decimals.
get_nfts
NFTs held by a Solana wallet: collections, names, images.
get_token_metadata
Fungible token metadata for Solana mints: decimals, supply, name, symbol.
get_transactions
Recent Solana signatures for an address with slot and block time.
parse_transactions
Human-readable Helius parse of Solana transactions: type, source, transfers, swaps.

Public scan report

scanner v0.1.10 · 2026-11-01 · same rubric, same numbers if you re-run it

no findings

Code scan7 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancerepository not readable: repo not found3/15
Maintainer identityno repository or website to verify2/10

Overall 65/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How Helius compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 65/100; higher than 20% of 48,255 servers
Tools: 5; the typical server has 7
Tools that change things: 0%; typical: 0%. Fewer write tools means less an agent can break
Downloads a week: 464; more than 87% of 12,191 servers with a package

What its tools let an agent do: 5 read

Release history: 2 versions in the registry since 2026-09-22, latest 2026-10-01, typically one every 10 days.

Install Helius in Claude Code, Cursor or VS Code

Runs npx -y @mrfentmen/helius-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add helius-mcp -- npx -y @mrfentmen/helius-mcp

Add to Cursor

What the publisher says

From the Helius repository's README, as published. We do not edit it. Read it on GitHub

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A monorepo of MCP servers from the mrfentmen account and local workspace.

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Browser extensions are maintained separately in private repositories and are intentionally not included here.

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Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Grade history

2026-11-01downgradeA → Cscore 65

Helius: common questions

Is Helius MCP server safe?: With care: it is graded C, so read the findings first (65/100). Read the Helius safety report
How do I install Helius?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Helius need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Helius maintained?: The last commit was 43 days ago (2026-09-22). The latest release is v1.0.1.
How does Helius compare with other MCP servers?: safety score 65/100 (higher than 20% of 48,255 servers); tools 5 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.