WATCHER: get a signed callback when EVM gas crosses a level you set — e.g.
WATCHER: get a signed callback when EVM gas crosses a level you set — e.g. "wake me when Ethereum gas drops below 10 gwei." Arm once, pay once (no account, no API key). chain: base | ethereum | polygon | arbitrum | optimism. conditionType: 'below' or 'above'; threshold is in gwei (compared to the chosen fee tier's max fee per gas). tier: slow | standard | fast (default standard). Fires once per crossing; bounded by a maxFires / expiry budget. Deliveries are EIP-191-signed (verify offline) and retried with exponential backoff; missed pushes are recoverable via watchers.status. Returns a watcherId.
| Method | Endpoint | Price | Description |
|---|---|---|---|
POST | /v1/marketplace/api/watchers-gas-price | $0.0575 | Invoke Watchers Gas Price (General) and return the upstream response. |
Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.
# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/watchers-gas-price \
-H 'Content-Type: application/json' \
-d '{}'
# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/watchers-gas-price \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <signed-payload>' \
-d '{}'
Open in the marketplace
Docs: Getting started · x402 payments · x402 discovery · All APIs