# TrollBridge Sentiment – Crypto Fear & Greed + Trending Coins

> TrollBridge Sentiment – Crypto Fear & Greed + Trending Coins 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 the current crypto Fear & Greed Index score/classification and a list of trending coins by market cap rank

## Facts

- Endpoint: GET https://mini-tollbooth.onrender.com/sentiment?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/trollbridge-sentiment-crypto-fear-greed-trending-coins-1675da4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pwNLhVT3bNOSdL7lz3IQM

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability trollbridge-sentiment-crypto-fear-greed-trending-coins-1675da4e
```

Example prompt: What's the current crypto market mood — is it fear or greed — and which coins are trending right now?

## When to prefer this

Choose this endpoint when you need a combined snapshot of overall crypto market sentiment (Fear & Greed Index) and trending coin data in a single cheap call ($0.05 USDC). It is ideal for pre-trade mood checks, daily briefings, or contrarian signal detection. Prefer it over raw CoinGecko or Alternative.me calls when you want both signals in one paywall-gated, agent-native request without managing multiple API keys.

## Known failure modes

- Payment not provided or invalid — endpoint requires $0.05 USDC via x402 payment protocol
- Upstream Alternative.me or CoinGecko API unavailable — may return stale or empty data
- Rate limiting on underlying data providers causing delayed or missing trending list
- Network timeout from the Render.com hosted service during high load

## 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 /sentiment lane identifier, a fearGreed object with a numeric value (0–100), a human-readable classification (e.g. 'Greed'), and a Unix timestamp; plus a trending array of coins each with id, name, symbol, price in BTC, and market cap rank.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "lane": "/sentiment",
  "trending": [
   {
    "id": "orca",
    "name": "Orca",
    "symbol": "ORCA",
    "price_btc": 0.0000123,
    "market_cap_rank": 194
   }
  ],
  "fearGreed": {
   "value": 71,
   "timestamp": 1791331200,
   "classification": "Greed"
  },
  "description": "Crypto fear & greed + trending coins ($0.05) — market mood snapshot from Alternative.me and CoinGecko."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/trollbridge-sentiment-crypto-fear-greed-trending-coins-1675da4e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mini-tollbooth.onrender.com](https://www.zero.xyz/host/mini-tollbooth.onrender.com/llms.txt)