# TrollBridge /yield-stable — Stablecoin DeFi Yield Rankings

> TrollBridge /yield-stable — Stablecoin DeFi Yield Rankings 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 top 20 stablecoin-only DeFi liquidity pools ranked by APY, filterable by chain and minimum TVL, sourced from DeFiLlama.

## Facts

- Endpoint: GET https://mini-tollbooth.onrender.com/yield-stable?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-yield-stable-stablecoin-defi-yield-rankings-ad3a3ee3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g-3ATm65omLgU9GeFuI21

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-yield-stable-stablecoin-defi-yield-rankings-ad3a3ee3
```

Example prompt: Show me the top stablecoin DeFi pools ranked by APY on Ethereum right now, with at least $500,000 in TVL — I want to see the base yield, reward yield, and IL risk for each.

## When to prefer this

Use this endpoint when you need a quick, ranked snapshot of the best stablecoin yield opportunities in DeFi, particularly when you want to filter by chain or TVL floor. Prefer this over raw DeFiLlama queries when you want pre-ranked, stablecoin-only results with IL risk and exposure metadata already included. Best for agents screening yield options before capital deployment or monitoring yield trends.

## Known failure modes

- Invalid chain name returns empty or unfiltered results
- min_tvl value too high returns empty ranked list
- DeFiLlama upstream outage causes stale or missing data
- Payment of $0.05 USDC not provided triggers 402 response
- apy_change_7d_pct may be null for newer pools

## 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 ranked list of up to 20 stablecoin DeFi pools including rank, chain, project name, token symbol, total APY, base APY, reward APY, TVL in USD, impermanent loss risk flag, exposure type (single/multi), 30-day mean APY, 7-day APY change, and underlying token addresses. Also returns the total number of stablecoin pools tracked, the chain filter applied, and the TVL floor used. Sourced from DeFiLlama with a disclaimer that APYs and stablecoin flags are protocol-reported.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "limit": {
       "type": "integer",
       "maximum": 200,
       "minimum": 1,
       "description": "Max items to return. Omit for the full feed."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "lane": "/yield-stable",
  "note": "stablecoin flag and APYs are protocol-reported via DeFiLlama; not a peg guarantee — screen, don't ape",
  "ranked": [
   {
    "rank": 1,
    "chain": "Ethereum",
    "symbol": "WUSCC",
    "apy_pct": 42.75,
    "il_risk": "no",
    "project": "3f",
    "tvl_usd": 203555,
    "exposure": "single",
    "apy_base_pct": 38.2,
    "apy_reward_pct": 4.55,
    "apy_mean_30d_pct": 31.5,
    "apy_change_7d_pct": null,
    "underlying_tokens": []
   }
  ],
  "source": "defillama",
  "description": "Stablecoin yield ranking ($0.05) — top 20 stablecoin-only DeFi pools by APY, filterable by chain and minimum TVL.",
  "min_tvl_usd": 100000,
  "chain_filter": "Ethereum",
  "stablecoin_pools_tracked": 2985
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/trollbridge-yield-stable-stablecoin-defi-yield-rankings-ad3a3ee3/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)