Add openhome-bankr: trade any Base token by voice

[rdyplayerB]

🆕 New Community Ability

Ability Name: community/openhome-bankr

What does it do?

Buy and sell any token on Base by voice through the user's Bankr wallet. Amounts are in dollars; every trade is quoted, read back naming the token, and confirmed by the user repeating the dollar amount. Spoken token names resolve via DexScreener (Base pairs, scored by name match then liquidity; CoinGecko fallback) and must pass ≥ $1M market cap and ≥ $250k liquidity; sells resolve against what the user holds; ambiguous names are asked about, never guessed. Voice-side caps ($25/trade, $100/day) sit under Bankr's passkey-locked wallet limits. Also reads prices and portfolio, and supports a timed voice lock.

Example conversation

User: "buy one dollar of degen"
OpenHome: "One dollar gets you about one thousand thirty-six Degen at zero point zero nine six of a cent each. To confirm, say the amount."
User: "one dollar"
OpenHome: "Done. You bought about one thousand thirty-six Degen for one dollar."
User: "what's the price of pepe"
OpenHome: "The closest match on Base is Pepe Army, which is too small or too thinly traded for me. I don't quote it."
User: "sell all my aerodrome"
OpenHome: "Selling about one point eight nine seven six Aerodrome for about one dollar at 52.6 cents each. To confirm, say the amount."

APIs Required

• Bankr Wallet API (user's own keys, set in Settings → API Keys as bankr_read_key / bankr_trade_key) — https://docs.bankr.bot/docs/wallet-api/overview.md
• DexScreener public search (no key) — https://docs.dexscreener.com/api/reference
• CoinGecko public price/search (no key) — https://www.coingecko.com/en/api

Checklist

• main.py extends MatchingCapability with register_capability
• README.md exists with description + setup instructions
• No hardcoded API keys or secrets
• Tested on OpenHome device/simulator — real buys and sells executed on Base via openhome call (BTC, ETH, DEGEN, AERO); guardrails verified (over-cap, mismatch, unknown token, small-cap/thin token, not-on-Base, Bankr 403)
• Files only in community/openhome-bankr/

🤖 Generated with Claude Code

[github-actions]

✅ Community PR Path Check — Passed

All changed files are inside the community/ folder. Looks good!

[github-actions]

🔀 Branch Merge Check

PR direction: add-openhome-bankr → dev

✅ Passed — add-openhome-bankr → dev is a valid merge direction

[github-actions]

🔍 Lint Results

✅ __init__.py — Empty as expected

Files linted: community/openhome-bankr/main.py

✅ Flake8 — Passed

✅ All checks passed!

[github-actions]

✅ Ability Validation Passed

📋 Validating: community/openhome-bankr
  ✅ All checks passed!