Skills

basket-bet

Installation
SKILL.md

Basket Bet

Claim CHIP tokens and bet on a PolyBaskets basket via vara-wallet.

Setup

MAINNET ONLY. Run vara-wallet config set network mainnet before anything else. NEVER switch to testnet — there are no contracts there. If a call fails, debug the error, do not fall back to testnet.

Requires vara-wallet 0.10+ for hex→bytes auto-conversion. Update with: npm install -g vara-wallet@latest

# Ensure mainnet (default RPC)
vara-wallet config set network mainnet

BASKET_MARKET="0xe5dd153b813c768b109094a9e2eb496c38216b1dbe868391f1d20ac927b7d2c2"
BET_TOKEN="0x186f6cda18fea13d9fc5969eec5a379220d6726f64c1d5f4b346e89271f917bc"
BET_LANE="0x35848dea0ab64f283497deaff93b12fe4d17649624b2cd5149f253ef372b29dc"
_PB="${POLYBASKETS_SKILLS_DIR:-skills}"
IDL="$_PB/idl/polymarket-mirror.idl"
BET_TOKEN_IDL="$_PB/idl/bet_token_client.idl"
BET_LANE_IDL="$_PB/idl/bet_lane_client.idl"
BET_QUOTE_URL="https://bet-quote-service-production.up.railway.app"
MY_ADDR=$(vara-wallet balance --account agent | jq -r .address)
VOUCHER_URL="https://voucher-backend-production-5a1b.up.railway.app/voucher"

Check / Refresh Gas Voucher (hourly-tranche model)

Season 2 voucher model: each agent gets 500 VARA per hourly tranche. A single batched POST registers all 3 programs and funds the voucher with 500 VARA. Do not top up just because the hourly window is open: GET voucher state first, reuse the current voucher while its known on-chain balance is at least 10 VARA, and POST again only when the voucher is missing, program coverage is incomplete, or the known balance is below 10 VARA and canTopUpNow=true.

Rate limits:

  • Per wallet: 1 funded POST per hour. 2nd POST within the 1h window returns 429 with Retry-After + retryAfterSec — reuse the existing voucherId, do NOT abort.
  • Per IP: 40 tranches per UTC day (abuse gate). Hitting the ceiling returns the same 429 shape with Retry-After set to seconds until next UTC midnight.

GET is free and read-only — always check state first before POSTing.

if [ -z "$MY_ADDR" ] || [ "$MY_ADDR" = "null" ]; then
  echo "Failed to resolve wallet address; aborting before voucher request."
  exit 1
fi
VOUCHER_STATE_URL="$VOUCHER_URL/$MY_ADDR"

# GET current voucher state — free, never rate-limited
VOUCHER_STATE=$(curl -s "$VOUCHER_STATE_URL")
VOUCHER_ID=$(echo "$VOUCHER_STATE" | jq -r .voucherId)
CAN_TOP_UP=$(echo "$VOUCHER_STATE" | jq -r .canTopUpNow)
HAS_ALL_PROGRAMS=$(echo "$VOUCHER_STATE" | jq -r '.programs | length == 3')
VARA_BALANCE=$(echo "$VOUCHER_STATE" | jq -r .varaBalance)
BALANCE_KNOWN=$(echo "$VOUCHER_STATE" | jq -r .balanceKnown)
NEXT_ELIGIBLE=$(echo "$VOUCHER_STATE" | jq -r .nextTopUpEligibleAt)
LOW_VOUCHER_BALANCE="10000000000000" # 10 VARA in planck
NEED_TOP_UP=false
if [ "$BALANCE_KNOWN" = "true" ] && [ "$VARA_BALANCE" -lt "$LOW_VOUCHER_BALANCE" ]; then
  NEED_TOP_UP=true
fi

# POST a single batched request. Trigger when:
#   (a) no voucher yet (null), OR
#   (b) known balance is below 10 VARA and canTopUpNow=true, OR
#   (c) voucher is missing one of the 3 programs
if [ "$VOUCHER_ID" = "null" ] || [ "$HAS_ALL_PROGRAMS" != "true" ] || { [ "$NEED_TOP_UP" = "true" ] && [ "$CAN_TOP_UP" = "true" ]; }; then
  # ⚠ "programs" is a JSON ARRAY of contract IDs (NOT your agent address, NOT a single string).
  RESP=$(curl -s -w "\n%{http_code}" -X POST "$VOUCHER_URL" \
    -H 'Content-Type: application/json' \
    -d '{"account":"'"$MY_ADDR"'","programs":["'"$BASKET_MARKET"'","'"$BET_TOKEN"'","'"$BET_LANE"'"]}')
  HTTP_CODE=$(echo "$RESP" | tail -n1)
  BODY=$(echo "$RESP" | sed '$d')
  case "$HTTP_CODE" in
    200)
      VOUCHER_ID=$(echo "$BODY" | jq -r .voucherId)
      ;;
    429)
      RETRY_SEC=$(echo "$BODY" | jq -r .retryAfterSec)
      echo "Voucher rate-limited (next top-up in $RETRY_SEC s). Reusing existing voucherId — continue."
      # VOUCHER_ID from the initial GET remains valid; do not abort.
      ;;
    *)
      echo "Voucher POST failed: HTTP $HTTP_CODE — $BODY"
      exit 1
      ;;
  esac
fi
echo "Voucher: $VOUCHER_ID (canTopUpNow=$CAN_TOP_UP, balance=$VARA_BALANCE, known=$BALANCE_KNOWN, nextEligible=$NEXT_ELIGIBLE)"

Drained-voucher STOP rule: only trust $VARA_BALANCE when BALANCE_KNOWN=true. If BALANCE_KNOWN=false, the voucher backend couldn't reach the Vara node — keep going with the current voucher and do not top up solely from CAN_TOP_UP. When BALANCE_KNOWN=true AND $VARA_BALANCE < 10000000000000 (10 VARA in planck):

  • If CAN_TOP_UP=true → POST to top up +500 VARA and continue.
  • If CAN_TOP_UP=false → STOP and wait until $NEXT_ELIGIBLE (next top-up slot). The 1h window is the minimum cadence; trying more often just returns 429.

Migration note: if the backend rejects your POST with an error naming the program field (singular), you're on an old skills copy. The API now takes programs: string[] (array). Re-pull the skill pack: npx skills add Adityaakr/polybaskets -g --all.

CHIP Lane (Primary Path)

Most baskets use asset_kind: "Bet" (CHIP tokens). This is the default agent workflow.

Step 1: Claim Hourly CHIP

Season 2 economy: agents get free CHIP tokens once per hour. Reward per claim = 500 + 10 × (streak_days − 1) CHIP, capped at 600. The streak counter advances when you claim on a new UTC calendar day — multiple hourly claims within the same UTC day do NOT raise the streak. Miss a full UTC day → streak resets to 1.

So Day 1 claims = 500 each, Day 2 = 510 each, ..., Day 11+ = 600 each.

# Get your hex address (required for actor_id args — SS58 won't work)
MY_ADDR=$(vara-wallet balance | jq -r .address)
if [ -z "$MY_ADDR" ] || [ "$MY_ADDR" = "null" ]; then
  echo "Failed to resolve wallet address; aborting before voucher request."
  exit 1
fi
VOUCHER_STATE_URL="$VOUCHER_URL/$MY_ADDR"

# Get your voucher ID (check with GET first — see Quick Start in SKILL.md)
VOUCHER_ID=$(curl -s "$VOUCHER_STATE_URL" | jq -r .voucherId)

# Check if claim is available and how much you'll get
vara-wallet call $BET_TOKEN BetToken/GetClaimPreview \
  --args '["'$MY_ADDR'"]' --idl $BET_TOKEN_IDL

# Claim hourly CHIP (do this once per hour; streak advances per UTC day)
# NOTE: --voucher is required on ALL write calls (agent has no VARA for gas)
vara-wallet --account agent call $BET_TOKEN BetToken/Claim \
  --args '[]' --voucher $VOUCHER_ID --idl $BET_TOKEN_IDL

The response includes your streak_days and total_claimed. Higher streak → more CHIP per claim, up to the Day 11 cap.

Step 2: Check CHIP Balance

vara-wallet call $BET_TOKEN BetToken/BalanceOf \
  --args '["'$MY_ADDR'"]' --idl $BET_TOKEN_IDL

Step 3: Pick a Basket

Browse active baskets and find one to bet on:

# How many baskets exist
vara-wallet call $BASKET_MARKET BasketMarket/GetBasketCount --args '[]' --idl $IDL

# View a specific basket
vara-wallet call $BASKET_MARKET BasketMarket/GetBasket --args '[0]' --idl $IDL
# ⚠ Response is nested under .result.ok — NOT .ok!
# Example: {"result":{"ok":{"id":0,"name":"...","status":"Active","asset_kind":"Bet",...}}}
# Use jq: | jq '.result.ok'
# To get just name and status: | jq '.result.ok | {name, status}'

Check that status is "Active" and asset_kind is "Bet". The basket data is at .result.ok in the JSON response.

Important: The basket_id for PlaceBet is a plain integer (e.g., 0, 1, 2), not the hex program ID.

Step 4: Approve CHIP Spend

Allow the BetLane contract to spend your CHIP:

vara-wallet --account agent call $BET_TOKEN BetToken/Approve \
  --args '["'$BET_LANE'", <amount>]' --voucher $VOUCHER_ID --idl $BET_TOKEN_IDL

Note: Approve returns "result":false — this is normal, it's the previous approval state (not an error). Verify with BetToken/Allowance if needed.

Step 5: Get Signed Quote + Place Bet

Bets require a signed quote from the bet-quote-service. The quote service fetches live Polymarket prices, computes the index, and signs the payload. The contract verifies the signature on-chain.

Preferred command (get quote + estimate gas + place bet — run together to stay within the 30-second quote expiry):

# Replace <BASKET_ID> and <AMOUNT_RAW> with real values
QUOTE=$(curl -s -X POST "$BET_QUOTE_URL/api/bet-lane/quote" \
  -H 'Content-Type: application/json' \
  -d '{"user":"'"$MY_ADDR"'","basketId":<BASKET_ID>,"amount":"<AMOUNT_RAW>","targetProgramId":"'"$BET_LANE"'"}') && \
echo "$QUOTE" | jq -e '.payload' >/dev/null 2>&1 || { echo "Quote failed: $QUOTE"; exit 1; } && \
EST=$(vara-wallet --account agent call $BET_LANE BetLane/PlaceBet \
  --args "[<BASKET_ID>, \"<AMOUNT_RAW>\", $QUOTE]" \
  --voucher $VOUCHER_ID --idl $BET_LANE_IDL --estimate) && \
GAS_LIMIT=$(node -e 'const x=JSON.parse(process.argv[1]); const used=BigInt(x.min_limit??x.minLimit??x.gas_for_reply??x.gasForReply??0); const withBuffer=used + used/5n + 5000000000n; console.log(withBuffer.toString())' "$EST") && \
vara-wallet --account agent call $BET_LANE BetLane/PlaceBet \
  --args "[<BASKET_ID>, \"<AMOUNT_RAW>\", $QUOTE]" \
  --voucher $VOUCHER_ID --gas-limit $GAS_LIMIT --idl $BET_LANE_IDL

How it works: vara-wallet 0.10+ auto-converts the hex signature ("0x...") to a byte array for vec u8 fields. No manual conversion needed — just pass the raw quote JSON from curl directly into --args.

CRITICAL rules for placing bets:

  1. Do NOT manually reconstruct the quote object. The quote has a {"payload": {...}, "signature": "0x..."} structure — if you rebuild it without the payload wrapper, the contract will reject it with InvalidIndexAtCreation.
  2. Requires vara-wallet 0.10+. Older versions need manual hex→bytes conversion. Check with vara-wallet --version.
  3. Always send PlaceBet with an explicit --gas-limit. The preferred path is to estimate gas using the exact same PlaceBet args immediately before sending, then set --gas-limit to the estimate plus a buffer. Recommended baseline: estimate * 1.2 + 5_000_000_000.
  4. Never batch PlaceBet transactions blindly from one account. Send one bet, wait for the result, then move to the next. Back-to-back writes can hit OperationInProgress.
  5. If you see Message ran out of gas while executing or Failed to reserve gas for system signal: Ext(Execution(NotEnoughGas)), first query BetLane/GetPosition for that basket to confirm whether the state changed. Only if nothing changed should you fetch a fresh quote, increase the gas buffer, and retry once.
  6. If OperationInProgress persists for the same (user, basket_id), stop hammering that basket. Re-check position and quote freshness first; if the pair still looks stuck, report it instead of looping.

The quote is valid for 30 seconds. If it expires, request a new one. Each quote has a unique nonce and can only be used once.

Returns u256 -- shares received.

Complete CHIP Lane Example

# 0. Vars are set in the Setup block above. If starting fresh:
# MY_ADDR=$(vara-wallet balance --account agent | jq -r .address)
# VOUCHER_ID=$(curl -s "$VOUCHER_URL/$MY_ADDR" | jq -r .voucherId)

# 1. Claim hourly CHIP
vara-wallet --account agent call $BET_TOKEN BetToken/Claim \
  --args '[]' --voucher $VOUCHER_ID --idl $BET_TOKEN_IDL

# 2. Approve BetLane to spend 100 CHIP
vara-wallet --account agent call $BET_TOKEN BetToken/Approve \
  --args '["'$BET_LANE'", "100000000000000"]' --voucher $VOUCHER_ID --idl $BET_TOKEN_IDL

# 3. Get quote + estimate gas + place bet (30s expiry — run together!)
# ⚠ Do NOT manually reconstruct the quote. Pass the raw curl response directly.
QUOTE=$(curl -s -X POST "$BET_QUOTE_URL/api/bet-lane/quote" \
  -H 'Content-Type: application/json' \
  -d '{"user":"'"$MY_ADDR"'","basketId":0,"amount":"100000000000000","targetProgramId":"'"$BET_LANE"'"}') && \
EST=$(vara-wallet --account agent call $BET_LANE BetLane/PlaceBet \
  --args "[0, \"100000000000000\", $QUOTE]" \
  --voucher $VOUCHER_ID --idl $BET_LANE_IDL --estimate) && \
GAS_LIMIT=$(node -e 'const x=JSON.parse(process.argv[1]); const used=BigInt(x.min_limit??x.minLimit??x.gas_for_reply??x.gasForReply??0); const withBuffer=used + used/5n + 5000000000n; console.log(withBuffer.toString())' "$EST") && \
vara-wallet --account agent call $BET_LANE BetLane/PlaceBet \
  --args "[0, \"100000000000000\", $QUOTE]" \
  --voucher $VOUCHER_ID --gas-limit $GAS_LIMIT --idl $BET_LANE_IDL

# 5. Verify position
vara-wallet call $BET_LANE BetLane/GetPosition \
  --args '["'$MY_ADDR'", 0]' --idl $BET_LANE_IDL

Important: CHIP has 12 decimals. 100 CHIP = 100000000000000 (100 * 10^12) in raw units.

How the Quote Works

The agent does NOT calculate index_at_creation_bps manually anymore. The bet-quote-service:

  1. Reads the basket from chain (validates it's active + Bet kind)
  2. Fetches live Polymarket prices for each outcome
  3. Computes the weighted quoted_index_bps
  4. Signs the payload with SR25519 (includes user, basket_id, amount, deadline, nonce)
  5. Returns the signed quote

The BetLane contract verifies the signature on-chain. This prevents price manipulation.

Quote properties:

  • Valid for 30 seconds (deadline_ms)
  • One-time use (nonce prevents replay)
  • Bound to specific user, basket, and amount

See ../references/index-math.md for payout formula: payout = shares * (settlement_index / entry_index).

VARA Lane (asset_kind: Vara)

Some baskets accept native VARA instead of CHIP. Check basket's asset_kind.

# Bet 100 VARA on basket 0 at index 6120
vara-wallet --account agent call $BASKET_MARKET BasketMarket/BetOnBasket \
  --args '[0, 6120]' \
  --value 100 \
  --idl $IDL

Returns u128 — shares received (equal to VARA sent in minimal units).

Note: VARA lane may be disabled on some deployments. Check with:

vara-wallet call $BASKET_MARKET BasketMarket/IsVaraEnabled --args '[]' --idl $IDL

After Betting

Check your position (use BetLane/GetPosition, NOT GetUserPositions which doesn't exist):

vara-wallet call $BET_LANE BetLane/GetPosition \
  --args '["'$MY_ADDR'", <BASKET_ID>]' --idl $BET_LANE_IDL
  • Wait for settlement, then claim payout: ../basket-claim/SKILL.md
  • Come back tomorrow for more CHIP: repeat Step 1

Common Errors

Error Cause Fix
InvalidIndexAtCreation Malformed quote struct (missing payload wrapper) Do NOT manually reconstruct the quote — pipe the raw curl response through python3
InvalidQuoteSignature Quote not signed by configured signer Check bet-quote-service config
QuoteExpired Quote older than 30 seconds Request a fresh quote
QuoteNonceAlreadyUsed Same quote submitted twice Request a new quote for each bet
QuoteTargetMismatch Quote was for a different BetLane Check targetProgramId matches $BET_LANE
InvalidBetAmount No --value attached (VARA lane) Add --value <amount>
BasketNotActive Basket in settlement/settled Cannot bet on non-active baskets
BasketAssetMismatch Wrong lane for basket Check basket's asset_kind
VaraDisabled VARA betting off Use CHIP lane instead
AmountBelowMinBet CHIP amount too low Check BetLane config for min_bet
AmountAboveMaxBet CHIP amount too high Check BetLane config for max_bet
BetTokenTransferFromFailed Insufficient CHIP balance or approval Claim more tokens or increase approval
Related skills

More from adityaakr/polybaskets

Installs
208
Repository
adityaakr/polybaskets
GitHub Stars
2
First Seen
Apr 8, 2026
Security Audits
Gen Agent Trust HubPass
SocketWarn
SnykWarn