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Solana Priority Fee Estimator API

br0ski777/solana-fees-x402

Pulls real-time Solana priority fee data across six congestion levels, with pricing in both SOL and USD. The server connects to a hosted API at klymax402.com and surfaces current network conditions through SSE transport. Reach for this when you're building agents that need to estimate transaction costs, optimize fee strategies, or monitor Solana network congestion before submitting transactions. The x402 branding suggests integration with a broader crypto data platform, though the repository itself is minimal on implementation details. Useful for any Claude workflow that touches Solana transactions and needs to make informed decisions about gas pricing.

tool
1
transport
SSE
last updated
May 16, 2026
View on GitHub

Tools

1 tools

Public tool metadata for what this MCP can expose to an agent.

solana_get_priority_feesUse 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. 1. fees: object with 6 fee lev1 params

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. 1. fees: object with 6 fee lev

Parameters* required
programstring
Program ID to get program-specific fees (e.g. JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4 for Jupiter). Optional — omit for global fees.

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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

View the full README on GitHub

Details

Repository
github.com/br0ski777/solana-fees-x402
Website
github.com/Br0ski777/solana-fees-x402
Category
Finance & Commerce
Transport
SSE
Registry
MCP registry, active

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