dappgrade score — pre-transaction health/safety verdict for an onchain app, by c
dappgrade score — pre-transaction health/safety verdict for an onchain app, by contract address. Returns ok / caution / avoid / unknown with the coverage the verdict rests on.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
2144 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://dappgrade.vercel.app/v1/score
| Category | Market data |
|---|---|
| Provider host | dappgrade.vercel.app |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.01 | 2144 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0x6cb442acf35158d5eda88fe602221b67b400be3e",
"chain": "8453"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "the contract address the agent is about to call",
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
},
"chain": {
"description": "EVM chain \u2014 id (8453), CAIP-2 (eip155:8453), or name (base, mainnet, arbitrum, optimism)",
"type": "string"
}
},
"required": [
"chain",
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"coverage": {
"description": "0..1 fraction of the rubric that actually ran; meaningless to read score without it",
"type": "number"
},
"flags": {
"items": {
"type": "string"
},
"type": "array"
},
"freshness": {
"description": "checked_at/age_seconds/stale. Pass max_age=<seconds> to get `unknown` + STALE_FOR_CALLER instead of an old answer \u2014 the observation still travels, so that response is billed normally. The scored fields are absent entirely (not null) on an `unknown` where we have no answer, and that one is free.",
"type": [
"object",
"null"
]
},
"reasons": {
"description": "stable machine-readable causes behind the verdict; see /v1/methodology \u2192 reason_codes",
"items": {
"properties": {
"check": {
"description": "on CHECK_FAILED",
"type": "string"
},
"code": {
"type": "string"
},
"detail": {
"type": "string"
},
"flag": {
"description": "on CRITICAL_FLAG",
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"score": {
"type": [
"integer",
"null"
]
},
"tier": {
"type": [
"integer",
"null"
]
},
"verdict": {
"description": "decision-shaped: ok = proceed, caution = hold, avoid = abort, unknown = not rated (never read as safe)",
"enum": [
"ok",
"caution",
"avoid",
"unknown"
],
"type": "string"
},
"verdict_reason": {
"description": "prose; wording not stable \u2014 branch on reasons[].code",
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}