# TrollBridge Fear & Greed Index

> TrollBridge Fear & Greed Index is a paid API for AI agents from mini-tollbooth.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).

Returns the current Crypto Fear & Greed Index value and classification plus a 7-day history, sourced from Alternative.me.

## Facts

- Endpoint: GET https://mini-tollbooth.onrender.com/fear-greed?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/trollbridge-fear-greed-index-6e2c70c7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sgchD30yDmfFG3DouXzF_

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-fear-greed-index-6e2c70c7
```

Example prompt: What's the current crypto Fear & Greed Index right now, and has sentiment been consistently greedy or fearful over the past week?

## When to prefer this

Choose this endpoint when you need a quick, low-cost ($0.02 USDC) snapshot of overall crypto market sentiment including a 7-day trend, without needing price or on-chain data. Ideal for pre-trade context checks, sentiment monitoring workflows, or any agent that needs to assess whether the market is in fear or greed before taking action. Prefer over raw price feeds when qualitative sentiment classification is the primary need.

## Known failure modes

- Upstream Alternative.me API unavailable, resulting in stale or missing data
- Payment of $0.02 USDC not provided or rejected via x402 protocol, blocking the response
- Network timeout from the Render-hosted service under load
- Response may lag if the upstream index has not yet updated for the current day

## 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

Returns a JSON object with the current date, Fear & Greed index value (0–100), sentiment classification (e.g. 'Greed', 'Extreme Fear'), a 7-day history array of daily values and classifications, the timestamp of the check, and a warning note that the index is a sentiment gauge and not a directional trading signal.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "lane": "/fear-greed",
  "current": {
   "date": "2026-10-07",
   "value": 71,
   "classification": "Greed"
  },
  "warning": "Sentiment gauge, not a trading signal — extreme greed/fear alone never proves direction.",
  "checked_at": "2026-10-07T00:00:00.000Z",
  "history_7d": [
   {
    "date": "2026-10-07",
    "value": 71,
    "classification": "Greed"
   }
  ],
  "description": "Crypto Fear & Greed index ($0.02) — current index value plus 7-day history from Alternative.me."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/trollbridge-fear-greed-index-6e2c70c7/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)