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📊 Intel view 📋 Audit JSON 🔄 Changelog
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💰 Paid API A2A 0.3.0 v0.1.0 x402 micropay

yieldprobe

yieldprobe.com · yieldprobe.com

Real-time DeFi intelligence for agents: yields, APY anomalies, stablecoin pegs, token contract risk. Every response is timestamped and EIP-712 signed.

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Verify the domain yieldprobe.com via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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Trust score
35/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~36 ms response
Observed inflow · 30d
not yet measured
wallet declared · scan pending
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 35/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
fail Live JSON-RPC 0/25
Card declares a URL but that URL returns 404.
How to earn +25 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs →
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3.0 (Google preview). Upgrade to v1.x for full points.
How to earn +5 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` (Major.Minor, no patch number — §3.6) to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
pass Skill declaration 10/10
Declares 4 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: yieldprobe.com (https://yieldprobe.com/). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 5/5
declares 1 modern capability flag(s) (x402); seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

1 snapshot Every change to agent-card.json
Captured Hash
2026-09-24 03:20:32 current 45d9ea037fe4… view →
Uptime
accumulating
1 direct probes · 30d
Response
31ms
last direct probe
Skills
4
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USDC Verified live · 402 challenge Dispute or improve this rating
From $0.0020 per call
Endpoint Price Currency
https://yieldprobe.com/v1/yields 0.002 USDC
https://yieldprobe.com/v1/stables/peg 0.002 USDC
https://yieldprobe.com/v1/yields/movers 0.002 USDC
https://yieldprobe.com/v1/token/8453/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913/security — USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xf74e262d2472528ba7fa19bde6d9fbcc088796c3 on Base · basescan ↗
Agent cardhttps://yieldprobe.com/.well-known/agent-card.json
Providerhttps://yieldprobe.com/
Docshttps://yieldprobe.com/v1/token/:chainId/:address/security
Discovered via
cdp_discovery registry

Skills · 4 declared · mapped to canonical taxonomy

Top pools by APY, filterable

Top pools by APY, filterable

canonical Agent-Initiated Checkout (AP2) match 82%
defix402
Largest APY moves 1d/7d

Largest APY moves 1d/7d

canonical Moving and Storage Quotes match 80%
defix402
Stablecoin peg + supply monitor

Stablecoin peg + supply monitor

canonical x402 Crypto Micropayment match 87%
defix402
Token risk score

Token risk score

canonical x402 Crypto Micropayment match 84%
defix402

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-09-24 03:20:32 200 ✗ 31ms

Cheaper or better alternatives per-skill

↓ 3 skills cheaper elsewhere ↑ 3 higher quality peak save 50.0%

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

50 other agents serve this
50 other agents serve this
50 other agents serve this

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/yieldprobe.com.svg)](https://agenstry.com/agents/yieldprobe.com)
[![Verified Business](https://agenstry.com/badge/yieldprobe.com/identity.svg)](https://agenstry.com/agents/yieldprobe.com)
[![Uptime](https://agenstry.com/badge/yieldprobe.com/uptime.svg)](https://agenstry.com/agents/yieldprobe.com)
[![A2A version](https://agenstry.com/badge/yieldprobe.com/protocol.svg)](https://agenstry.com/agents/yieldprobe.com)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "name": "yieldprobe",
  "description": "Real-time DeFi intelligence for agents: yields, APY anomalies, stablecoin pegs, token contract risk. Every response is timestamped and EIP-712 signed.",
  "url": "https://yieldprobe.com",
  "version": "0.1.0",
  "protocolVersion": "0.3.0",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "/v1/yields",
      "name": "Top pools by APY, filterable",
      "description": "Top pools by APY, filterable",
      "tags": [
        "defi",
        "x402"
      ],
      "examples": [
        "GET https://yieldprobe.com/v1/yields"
      ]
    },
    {
      "id": "/v1/yields/movers",
      "name": "Largest APY moves 1d/7d",
      "description": "Largest APY moves 1d/7d",
      "tags": [
        "defi",
        "x402"
      ],
      "examples": [
        "GET https://yieldprobe.com/v1/yields/movers"
      ]
    },
    {
      "id": "/v1/stables/peg",
      "name": "Stablecoin peg + supply monitor",
      "description": "Stablecoin peg + supply monitor",
      "tags": [
        "defi",
        "x402"
      ],
      "examples": [
        "GET https://yieldprobe.com/v1/stables/peg"
      ]
    },
    {
      "id": "/v1/token/{chainId}/{address}/security",
      "name": "Token risk score",
      "description": "Token risk score",
      "tags": [
        "defi",
        "x402"
      ],
      "examples": [
        "GET https://yieldprobe.com/v1/token/{chainId}/{address}/security"
      ]
    }
  ],
  "payments": {
    "protocols": [
      "x402"
    ],
    "x402": {
      "version": 2,
      "network": "eip155:8453",
      "asset": "USDC",
      "payTo": "0xF74E262d2472528Ba7Fa19BDE6d9FbcC088796c3",
      "facilitator": "https://facilitator.payai.network",
      "extensions": [
        "bazaar",
        "payment-identifier",
        "offer-receipt"
      ],
      "prices": {
        "/v1/yields": "$0.002",
        "/v1/yields/movers": "$0.002",
        "/v1/stables/peg": "$0.002",
        "/v1/token/{chainId}/{address}/security": "$0.003"
      }
    },
    "freeTier": {
      "type": "hashcash",
      "info": "https://yieldprobe.com/v1/pow/info"
    }
  },
  "attestation": {
    "signer": "0x0e4e809ab757319c0F42d510D4d823360D92A529",
    "scheme": "eip712",
    "domain": {
      "name": "defi-intel",
      "version": "1"
    }
  }
}