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Solana Fees X402 MCP Server

by Br0ski777
Developer ToolsLow Risk10.0MCP RegistryRemote
Free

Server data from the Official MCP Registry

Solana priority fees at 6 levels, cost in SOL/USD, congestion. x402.

About

Solana priority fees at 6 levels, cost in SOL/USD, congestion. x402.

Remote endpoints: sse: https://solana-fees.api.klymax402.com/mcp

Security Report

10.0
Low Risk10.0Low Risk

Valid MCP server (1 strong, 0 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry. Trust signals: trusted author (164/169 approved); 6 highly-trusted packages.

1 tool verified · Open access · No issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

file_system

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

env_vars

Check that this permission is expected for this type of plugin.

database

Check that this permission is expected for this type of plugin.

How to Connect

Remote Plugin

No local installation needed. Your AI client connects to the remote endpoint directly.

Add this to your MCP configuration to connect:

{
  "mcpServers": {
    "io-github-br0ski777-solana-fees": {
      "url": "https://solana-fees.api.klymax402.com/mcp"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

Solana Priority Fee Estimator API

MCP Server x402 License: MIT

Solana priority fee estimates at 6 levels (min to max). Essential for every Solana transaction. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "solana-fees": {
      "url": "https://solana-fees.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://solana-fees.api.klymax402.com/api/fees"
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

ToolMethodPathPriceDescription
solana_get_priority_feesGET/api/fees$0.003Priority fee estimates for Solana transactions

solana_get_priority_fees

Use this when you need priority fee estimates before sending a Solana transaction. Returns recommended compute unit prices at 6 levels based on recent network activity.

Parameters

NameTypeRequiredDescription
programstringnoProgram ID to get program-specific fees (e.g. JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4 for Jupiter). Optional — omit for global fees.

Returns

  • fees -- object with 6 fee levels in microlamports per compute unit
  • min -- minimum fee observed (cheapest, may fail in congestion)
  • low -- 25th percentile fee (budget transactions)
  • medium -- 50th percentile fee (recommended default)
  • high -- 75th percentile fee (fast confirmation)
  • veryHigh -- 90th percentile fee (priority during congestion)
  • max -- maximum fee observed (guaranteed fast)

Example response:

{"fees":{"min":1,"low":100,"medium":1000,"high":5000,"veryHigh":50000,"max":500000},"slot":285432100,"program":"global","updatedAt":"2026-04-13T12:00:00Z"}

When to use: every Solana transaction to set the right priority fee. Essential for Jupiter swaps, NFT mints, token transfers, and program interactions.

Example agent prompts

  • "Priority fee estimates before sending a Solana transaction"

Payment

  • Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
  • Network: Base L2 (eip155:8453)
  • Asset: USDC
  • Facilitator: Coinbase CDP (primary), PayAI (fallback)
  • Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

License

MIT

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Solana Fees X402 MCP Server - Solana priority fees at 6 levels, cost in SOL/USD, | MCP Marketplace