RealCryptoCap for Hermes Agent
Live crypto prices, real market cap rankings and AI market briefs inside Hermes. Free, no API key, no account.
Ask Hermes "what's BTC at?", "top 20 coins" or "give me a crypto morning brief" and it answers from live RealCryptoCap data instead of guessing from memory or running a slow web search.
Real market cap ranks native crypto only. Stablecoins (USDT, USDC), wrapped and staked receipts (WBTC, stETH) and tokenized assets are left out, so the Top 10 is ten actual cryptocurrencies.
What you get
| | |
|---|---|
| rcc_price | Price, rank, real market cap, 24h change, 24h high/low and volume. Takes tickers (BTC), names (Solana) or CoinGecko ids. |
| rcc_top | Top coins by real market cap (up to 50 free, 500 with a key). |
| rcc_market_brief | A short trader brief: bias, key levels, movers and headlines, written by your own Hermes model from live data via ctx.llm. If no model is available it returns the data for the agent to summarise. |
| /crypto | Instant price table with no model call: /crypto btc eth sol, /crypto top 20. |
| Skill | realcryptocap:realcryptocap tells the agent which tool to use and to never quote prices from memory. |
Results are cached for 60 seconds. Errors come back as JSON, never as crashes.
Install
hermes plugins install jamesparser/realcryptocap-hermes
hermes plugins enable realcryptocap
Or copy this folder to ~/.hermes/plugins/realcryptocap/ and run hermes plugins enable realcryptocap.
Optional: RealCryptoCap API key
Everything above works free. A Pro or Ultra key from realcryptocap.com/api raises rcc_top to the Top 500. Set it in Settings → Plugins → realcryptocap in Hermes Desktop, or add REALCRYPTOCAP_API_KEY=... to your Hermes .env. Pro/Ultra also includes the full RealCryptoCap API, CLI and MCP server (signals, Fear & Greed, derivatives, ETF flows).
Disclosure
- Network: HTTPS GET requests to
realcryptocap.comonly (/api/cg,/api/market-analysis,/api/news). The only data sent is the request itself; if you set an API key it is sent as a Bearer header to realcryptocap.com. - Model calls:
rcc_market_briefsends the fetched market data (prices, analysis, headlines) to your active Hermes model throughctx.llm. No conversation content is sent. - No shell commands, file writes, background processes, telemetry or stored credentials. Standard library only.
- Market data, not financial advice.
Development
python tests/test_tools.py # offline tests with fixture data
hermes plugins validate . --install-deps
hermes plugins doctor . --ci
License
MIT. Built by Node0 Data Systems / RealCryptoCap.
README from the reviewed commit 9df89e0; it updates when the author re-pins.

jamesparser