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https://github.com/NousResearch/hermes-agent.git
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chore: move Solana skill to optional-skills/
Solana blockchain queries are a niche use case — not needed by every user. Moved from skills/ (bundled) to optional-skills/ (installable via Skills Hub).
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teknium1
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415
optional-skills/blockchain/solana/scripts/solana_client.py
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415
optional-skills/blockchain/solana/scripts/solana_client.py
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#!/usr/bin/env python3
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"""
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Solana Blockchain CLI Tool for Hermes Agent
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--------------------------------------------
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Queries the Solana JSON-RPC API using only Python standard library.
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No external packages required.
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Usage:
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python3 solana_client.py stats
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python3 solana_client.py wallet <address>
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python3 solana_client.py tx <signature>
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python3 solana_client.py token <mint_address>
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python3 solana_client.py activity <address> [--limit N]
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python3 solana_client.py nft <address>
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python3 solana_client.py whales [--min-sol N]
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Environment:
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SOLANA_RPC_URL Override the default RPC endpoint (default: mainnet-beta public)
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"""
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import argparse
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import json
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import os
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import sys
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import urllib.request
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import urllib.error
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from typing import Any
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RPC_URL = os.environ.get(
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"SOLANA_RPC_URL",
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"https://api.mainnet-beta.solana.com"
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)
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LAMPORTS_PER_SOL = 1_000_000_000
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# ---------------------------------------------------------------------------
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# RPC helpers
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# ---------------------------------------------------------------------------
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def rpc(method: str, params: list = None) -> Any:
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"""Send a JSON-RPC request and return the result field."""
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payload = json.dumps({
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"jsonrpc": "2.0",
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"id": 1,
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"method": method,
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"params": params or [],
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}).encode()
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req = urllib.request.Request(
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RPC_URL,
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data=payload,
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headers={"Content-Type": "application/json"},
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method="POST",
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)
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try:
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with urllib.request.urlopen(req, timeout=15) as resp:
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body = json.load(resp)
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except urllib.error.URLError as exc:
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sys.exit(f"RPC connection error: {exc}")
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if "error" in body:
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sys.exit(f"RPC error: {body['error']}")
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return body.get("result")
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def rpc_batch(calls: list) -> list:
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"""Send a batch of JSON-RPC requests."""
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payload = json.dumps([
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{"jsonrpc": "2.0", "id": i, "method": c["method"], "params": c.get("params", [])}
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for i, c in enumerate(calls)
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]).encode()
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req = urllib.request.Request(
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RPC_URL,
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data=payload,
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headers={"Content-Type": "application/json"},
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method="POST",
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)
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try:
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with urllib.request.urlopen(req, timeout=15) as resp:
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return json.load(resp)
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except urllib.error.URLError as exc:
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sys.exit(f"RPC batch error: {exc}")
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def lamports_to_sol(lamports: int) -> float:
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return lamports / LAMPORTS_PER_SOL
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def print_json(obj: Any) -> None:
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print(json.dumps(obj, indent=2))
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# ---------------------------------------------------------------------------
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# 1. Network Stats
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# ---------------------------------------------------------------------------
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def cmd_stats(_args):
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"""Live Solana network: slot, epoch, TPS, supply, version."""
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results = rpc_batch([
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{"method": "getSlot"},
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{"method": "getEpochInfo"},
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{"method": "getRecentPerformanceSamples", "params": [1]},
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{"method": "getSupply"},
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{"method": "getVersion"},
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])
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by_id = {r["id"]: r.get("result") for r in results}
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slot = by_id[0]
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epoch_info = by_id[1]
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perf_samples = by_id[2]
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supply = by_id[3]
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version = by_id[4]
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tps = None
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if perf_samples:
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s = perf_samples[0]
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tps = round(s["numTransactions"] / s["samplePeriodSecs"], 1)
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total_supply = lamports_to_sol(supply["value"]["total"]) if supply else None
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circ_supply = lamports_to_sol(supply["value"]["circulating"]) if supply else None
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print_json({
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"slot": slot,
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"epoch": epoch_info.get("epoch") if epoch_info else None,
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"slot_in_epoch": epoch_info.get("slotIndex") if epoch_info else None,
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"tps": tps,
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"total_supply_SOL": round(total_supply, 2) if total_supply else None,
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"circulating_supply_SOL": round(circ_supply, 2) if circ_supply else None,
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"validator_version": version.get("solana-core") if version else None,
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})
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# ---------------------------------------------------------------------------
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# 2. Wallet Info
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# ---------------------------------------------------------------------------
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def cmd_wallet(args):
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"""SOL balance + SPL token accounts for an address."""
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address = args.address
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balance_result = rpc("getBalance", [address])
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sol_balance = lamports_to_sol(balance_result["value"])
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token_result = rpc("getTokenAccountsByOwner", [
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address,
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{"programId": "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"},
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{"encoding": "jsonParsed"},
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])
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tokens = []
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for acct in (token_result.get("value") or []):
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info = acct["account"]["data"]["parsed"]["info"]
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token_amount = info["tokenAmount"]
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amount = float(token_amount["uiAmountString"] or 0)
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if amount > 0:
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tokens.append({
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"mint": info["mint"],
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"amount": amount,
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"decimals": token_amount["decimals"],
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})
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print_json({
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"address": address,
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"balance_SOL": round(sol_balance, 9),
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"spl_tokens": tokens,
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})
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# ---------------------------------------------------------------------------
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# 3. Transaction Details
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# ---------------------------------------------------------------------------
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def cmd_tx(args):
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"""Full transaction details by signature."""
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result = rpc("getTransaction", [
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args.signature,
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{"encoding": "jsonParsed", "maxSupportedTransactionVersion": 0},
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])
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if result is None:
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sys.exit("Transaction not found (may be too old for public RPC history).")
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meta = result.get("meta", {}) or {}
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msg = result.get("transaction", {}).get("message", {})
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account_keys = msg.get("accountKeys", [])
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pre = meta.get("preBalances", [])
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post = meta.get("postBalances", [])
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balance_changes = []
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for i, key in enumerate(account_keys):
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acct_key = key["pubkey"] if isinstance(key, dict) else key
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if i < len(pre) and i < len(post):
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change = lamports_to_sol(post[i] - pre[i])
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if change != 0:
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balance_changes.append({"account": acct_key, "change_SOL": round(change, 9)})
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programs = []
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for ix in msg.get("instructions", []):
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prog = ix.get("programId")
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if prog is None and "programIdIndex" in ix:
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k = account_keys[ix["programIdIndex"]]
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prog = k["pubkey"] if isinstance(k, dict) else k
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if prog:
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programs.append(prog)
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print_json({
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"signature": args.signature,
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"slot": result.get("slot"),
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"block_time": result.get("blockTime"),
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"fee_SOL": lamports_to_sol(meta.get("fee", 0)),
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"status": "success" if meta.get("err") is None else "failed",
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"balance_changes": balance_changes,
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"programs_invoked": list(dict.fromkeys(programs)),
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})
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# ---------------------------------------------------------------------------
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# 4. Token Info
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# ---------------------------------------------------------------------------
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def cmd_token(args):
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"""SPL token metadata, supply, decimals, top holders."""
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mint = args.mint
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mint_info = rpc("getAccountInfo", [mint, {"encoding": "jsonParsed"}])
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if mint_info is None or mint_info.get("value") is None:
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sys.exit("Mint account not found.")
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parsed = mint_info["value"]["data"]["parsed"]["info"]
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decimals = parsed.get("decimals", 0)
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supply_raw = int(parsed.get("supply", 0))
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supply_human = supply_raw / (10 ** decimals)
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mint_authority = parsed.get("mintAuthority")
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freeze_authority = parsed.get("freezeAuthority")
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largest = rpc("getTokenLargestAccounts", [mint])
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holders = []
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for acct in (largest.get("value") or [])[:5]:
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amount = float(acct.get("uiAmountString") or 0)
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pct = round((amount / supply_human * 100), 4) if supply_human > 0 else 0
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holders.append({
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"account": acct["address"],
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"amount": amount,
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"percent": pct,
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})
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print_json({
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"mint": mint,
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"decimals": decimals,
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"supply": round(supply_human, decimals),
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"mint_authority": mint_authority,
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"freeze_authority": freeze_authority,
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"top_5_holders": holders,
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})
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# ---------------------------------------------------------------------------
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# 5. Recent Activity
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# ---------------------------------------------------------------------------
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def cmd_activity(args):
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"""Recent transaction signatures for an address."""
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limit = min(args.limit, 25)
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result = rpc("getSignaturesForAddress", [args.address, {"limit": limit}])
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txs = [
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{
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"signature": item["signature"],
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"slot": item.get("slot"),
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"block_time": item.get("blockTime"),
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"err": item.get("err"),
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}
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for item in (result or [])
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]
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print_json({"address": args.address, "transactions": txs})
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# ---------------------------------------------------------------------------
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# 6. NFT Portfolio
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# ---------------------------------------------------------------------------
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def cmd_nft(args):
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"""NFTs owned by a wallet (amount=1 && decimals=0 heuristic)."""
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result = rpc("getTokenAccountsByOwner", [
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args.address,
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{"programId": "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"},
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{"encoding": "jsonParsed"},
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])
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nfts = [
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acct["account"]["data"]["parsed"]["info"]["mint"]
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for acct in (result.get("value") or [])
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if acct["account"]["data"]["parsed"]["info"]["tokenAmount"]["decimals"] == 0
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and int(acct["account"]["data"]["parsed"]["info"]["tokenAmount"]["amount"]) == 1
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]
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print_json({
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"address": args.address,
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"nft_count": len(nfts),
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"nfts": nfts,
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"note": "Heuristic only. Compressed NFTs (cNFTs) are not detected.",
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})
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# ---------------------------------------------------------------------------
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# 7. Whale Detector
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# ---------------------------------------------------------------------------
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def cmd_whales(args):
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"""Scan the latest block for large SOL transfers."""
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min_lamports = int(args.min_sol * LAMPORTS_PER_SOL)
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slot = rpc("getSlot")
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block = rpc("getBlock", [
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slot,
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{
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"encoding": "jsonParsed",
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"transactionDetails": "full",
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"maxSupportedTransactionVersion": 0,
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"rewards": False,
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},
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])
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if block is None:
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sys.exit("Could not retrieve latest block.")
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whales = []
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for tx in (block.get("transactions") or []):
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meta = tx.get("meta", {}) or {}
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if meta.get("err") is not None:
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continue
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msg = tx["transaction"].get("message", {})
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account_keys = msg.get("accountKeys", [])
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pre = meta.get("preBalances", [])
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post = meta.get("postBalances", [])
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for i in range(len(pre)):
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change = post[i] - pre[i]
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if change >= min_lamports:
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k = account_keys[i]
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receiver = k["pubkey"] if isinstance(k, dict) else k
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sender = None
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for j in range(len(pre)):
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if pre[j] - post[j] >= min_lamports:
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sk = account_keys[j]
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sender = sk["pubkey"] if isinstance(sk, dict) else sk
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break
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whales.append({
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"sender": sender,
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"receiver": receiver,
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"amount_SOL": round(lamports_to_sol(change), 4),
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})
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print_json({
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"slot": slot,
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"min_threshold_SOL": args.min_sol,
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"large_transfers": whales,
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})
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# ---------------------------------------------------------------------------
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# CLI
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# ---------------------------------------------------------------------------
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def main():
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parser = argparse.ArgumentParser(
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prog="solana_client.py",
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description="Solana blockchain query tool for Hermes Agent",
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)
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sub = parser.add_subparsers(dest="command", required=True)
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sub.add_parser("stats", help="Network stats: slot, epoch, TPS, supply, version")
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p_wallet = sub.add_parser("wallet", help="SOL balance + SPL tokens for an address")
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p_wallet.add_argument("address")
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p_tx = sub.add_parser("tx", help="Transaction details by signature")
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p_tx.add_argument("signature")
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p_token = sub.add_parser("token", help="SPL token metadata and top holders")
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p_token.add_argument("mint")
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p_activity = sub.add_parser("activity", help="Recent transactions for an address")
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p_activity.add_argument("address")
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p_activity.add_argument("--limit", type=int, default=10,
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help="Number of transactions (max 25, default 10)")
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p_nft = sub.add_parser("nft", help="NFT portfolio for a wallet")
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p_nft.add_argument("address")
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p_whales = sub.add_parser("whales", help="Large SOL transfers in the latest block")
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p_whales.add_argument("--min-sol", type=float, default=1000.0,
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help="Minimum SOL transfer size (default: 1000)")
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args = parser.parse_args()
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dispatch = {
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"stats": cmd_stats,
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"wallet": cmd_wallet,
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"tx": cmd_tx,
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"token": cmd_token,
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"activity": cmd_activity,
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"nft": cmd_nft,
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"whales": cmd_whales,
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}
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dispatch[args.command](args)
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if __name__ == "__main__":
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main()
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