TrollBridge — pay-per-call crypto intel for agents

TrollBridge is a live x402 pay-per-call API: 100 intel lanes covering markets data, token safety screens, scam detection, DeFi yields, Polymarket odds, and audit tools. You pay per call in USDC on Base (or Solana). No API key, no signup — the 402 response itself is the invoice.

Base URL: https://mini-tollbooth.onrender.com

How x402 payment works

1. Call any lane without payment. You get HTTP 402 with a JSON body describing the price and where to pay.
2. Sign a USDC transfer for the quoted amount to the quoted address (EIP-3009 / x402 payment scheme — your x402 client library handles this; see https://x402.org for client docs).
3. Retry the same request with the X-PAYMENT header set to the base64-encoded payment payload. You get HTTP 200 with the data.

If you don't have an x402 client, the 402 body is human-readable: it tells you the exact amount, token, network, and recipient. Any wallet that can sign a USDC transfer on Base can pay.

Free endpoints (no payment needed): GET /health, GET /tools.

Pricing tiers (USDC)

• $0.02 — standard lanes (default): most intel feeds
• $0.05 — premium data lanes: /token-check, /markets, /yields, /search, /enrich, /new-pairs, /preflight, /road-pack, /trust, and others
• $0.10 — protection tier: /contract-check, /approval-screen, /tx-plain-english, /airlock, /verdict, /honeypot-check, /tx-simulate, and others
• $1.00–$30.00 — heavyweight lanes: /audit-prep, /datasets ($1), /scam-scan ($5 deep scan), /audit ($25), /scam-scan-subscribe ($30)

The 402 response always states the exact price before you pay. Never guess.

Lanes agents actually use

Before you move money (safety screens):

• GET /token-check?token=0x...&chain=base — $0.05 — liquidity, holders, rug-pull heuristics, verdict
• GET /honeypot?token=0x...&chain=base — $0.02 — can you sell after you buy
• GET /honeypot-check?token=0x...&chain=base — $0.10 — deeper DEX buy/sell flow simulation + holder concentration
• GET /contract-check?contract=0x...&chain=base — $0.10 — verification, proxy/owner heuristics, holder concentration
• GET /approval-screen?wallet=0x...&chain=base — $0.10 — risky token approvals on a wallet (NOT AN AUDIT — heuristic screen)
• GET /preflight?token=0x...&chain=base — $0.05 — honeypot + rug + contract + approvals in one call

Market intel:

• GET /polymarket-odds?market=<slug-or-id> — $0.02 — live Polymarket odds, prices, volume
• GET /markets — $0.05 — prediction-market overview
• GET /top-movers — $0.02 — biggest gainers/losers right now
• GET /yields — $0.05 — best stablecoin yields (DeFiLlama)
• GET /whale-watch — $0.02 — large-wallet movement flags
• GET /fear-greed — $0.02 — Fear & Greed index
• GET /gas — $0.02 — current gas prices

Deep scans (priced accordingly):

• GET /scam-scan?url=<url> — $5.00 — full 10-flag scam smell-test with prize-vs-cost math and a CLEAN / CAUTION / LIKELY_SCAM verdict
• GET /audit-prep?repo=<url> — $1.00 — pre-audit checklist for a repo

Discovery (free):

• GET /tools — free third-party tool directory on the bridge
• GET /health — {"status":"ok","lanes":100} — liveness check

Worked example: check a token before swapping

# 1. Unpaid call → 402 with payment details
curl -s https://mini-tollbooth.onrender.com/token-check?token=0x...&chain=base

# 2. Pay the quoted USDC amount on Base, get the payment payload
#    (via your x402 client library)

# 3. Retry with payment
curl -s -H "X-PAYMENT: <base64-payment-payload>" \
  "https://mini-tollbooth.onrender.com/token-check?token=0x...&chain=base"
# → 200 with { verdict, liquidity, holders, flags }

Honest notes

• This is a live service on a hobby host (Render free tier): expect occasional cold starts of ~30–60s on the first request after idle.
• Screens are heuristic, not audits. Every screen lane's copy leads with "NOT AN AUDIT" where applicable — treat verdicts as one input, not a guarantee.
• Paid crossings settle on-chain via the Coinbase CDP facilitator; volume is publicly enumerable on the x402 Bazaar leaderboard.
• Lane list and prices can change; the 402 response is always the source of truth for the current price.