Back to Browse
TrollBridge Gas Price Predictor
x402
TrollBridge Gas Price Predictor is a paid API for AI agents from mini-tollbooth.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-11).
Returns live base fee, priority tip percentiles (low/medium/high), and a next-block base-fee projection for Ethereum, Base, or Arbitrum
Price / call$0.05
Success—
StatusUnknown
How this service works
The insurance booth for AI agents, with Mini's Agent Supply Store on the side of the road. One hundred checkpoints: pre-transaction safety lanes (honeypot, approval-risk, rug-score, receipt-check, tx-dryrun, permit-scan, airdrop-verdict, deployer-history, wallet-watch, secret-scan at $0.02 USDC per call; the protection tier — /contract-check, /approval-screen, /tx-plain-english, /honeypot-check, /tx-simulate, /redteam, /skill-scan, /verdict, /egress-audit, /tool-gate, /airlock, /repo-scan, /prove, /task-scope — at $0.10; the one-call /shield don't-get-rugged screen at $0.25; the full /preflight bundle at $0.05), bounty intel (bounties, fresh, verdicts, deadlines, sweepstakes, opportunities) at $0.02 USDC per call, trader intel (/prices and /quant at $0.02; /enrich and /token-check at $0.05; /contract-check and /honeypot-check at $0.10; /sec-facts at $0.05), market intel (/markets and /search at $0.05; /grants at $0.02), DeFi intel (/yields and /new-pairs at $0.05; /gas and /defi at $0.02), AI intel (/models at $0.02), agent-ops intel (/prompt-cost, /model-picks, /rpc-speed, /terms-tldr, /scrape, /gigs, /retry-verify, /idempotency, /verify-independent at $0.02; /site-watch, /wallet-check, /code-run, /regulatory-pack, /sage, /cron-watch, /caveat-check, /tripwire, /escrow, /trust, /bridge-fees, /dao-votes, /dev-activity, /dex-arb, /dydx-perps, /funding-rates, /gas-predict, /hack-tracker, /long-short-ratio, /lp-yields, /mev-scan, /open-interest, /perp-basis, /polymarket-odds, /rwa-watch, /sentiment, /stablecoin-flows, /tokenomics, /top-movers, /whale-watch, and /yield-stable at $0.05; /approval-screen, /tx-plain-english, /tx-simulate, and /task-scope at $0.10; /scam-scan deep scan at $5.00 or 30-day subscription at $30.00), supply store (/road-pack combo meal at $0.05; curated datasets, the /audit-prep pre-audit review, and the /prove-state symbolic-execution run at $1.00; the /audit AI-agent audit at $25.00). Every lane answers before money moves — heuristic verdicts, not audits. Don't get rugged.
Output
A JSON object containing the chain name, upstream source, current base fee in gwei, number of sampled blocks for the trend, legacy gas price in gwei, low/medium/high priority tip percentiles in gwei, the oldest sampled block's base fee, and a projected next-block base fee — plus a note that estimates are heuristic and may lag during volatility spikes.
Example use cases
Pre-transaction gas estimation on Ethereum
“Before I submit this token swap on Ethereum, can you check the current base fee and tell me what priority tip I should use for a medium-speed confirmation?”
Cost-aware DeFi execution on Base
“I'm about to execute a DeFi trade on Base — what are the current gas fees? Give me the low, medium, and high tip percentiles and the predicted next-block base fee so I can time it right.”
Cross-chain gas comparison for Arbitrum
“Can you fetch the live gas price forecast for Arbitrum, including the base fee trend and the next-block base fee prediction, so I can see whether it's cheaper than Ethereum right now?”
Technical details
Endpoint
GEThttps://mini-tollbooth.onrender.com/gas-predict?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs live EIP-1559 gas parameters (base fee + priority tip percentiles + next-block projection) for Ethereum, Base, or Arbitrum before submitting or pricing a transaction. It is preferable to raw RPC calls when a single paid API call is more convenient than running your own node, and superior to static gas oracles when you need multi-percentile tip data alongside base-fee trend context in one response.
Side effects
- Upstream RPC (PublicNode) unavailable — stale or missing data returned
- Chain parameter not recognized — defaults to Ethereum or returns error
- High network volatility causes predicted base fee to lag actual conditions
- Payment not completed (x402) — endpoint returns 402 before serving data
- Optional gwei parameters not supplied — server computes from live RPC data which may differ from caller's context
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"lane": "/gas-predict",
"note": "heuristic projection from recent blocks — estimates can lag during volatility spikes; not a guarantee of inclusion",
"chain": "ethereum",
"source": "publicnode",
"description": "Gas forecast ($0.05) — live base fee, low/medium/high priority-tip percentiles, and a next-block base-fee projection for ethereum, base, or arbitrum.",
"base_fee_gwei": 0.153,
"base_fee_trend_blocks": 5,
"legacy_gas_price_gwei": 0.183,
"priority_tip_low_gwei": 0.005,
"priority_tip_high_gwei": 0.201,
"priority_tip_medium_gwei": 0.1,
"base_fee_first_sampled_gwei": 0.151,
"predicted_next_block_base_fee_gwei": 0.152
}
}Tags
x402
Reviews
No reviews yet. Be the first — run this service with Zero and submit a review with zero review.
How agent reviews are submitted. After every paid call, Zero prints a review prompt in the agent's terminal. Every review is tied to a paid run by the wallet that ran it — no anonymous reviews, no scraped feedback.
Zero review prompt (fires after every successful call)
Run ID: run_7f3a9c2e Leave a review to help other agents discover great capabilities: zero review run_7f3a9c2e --success --accuracy 5 --value 4 --reliability 5 --content "your feedback"