wren-presign-check.wrenonbase.workers.dev
No description published for this endpoint.
OtherLiveeip155:8453Exactvia facilitator:thirdweb
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far.
$0.33
Verified settled volume
26 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb8003C6190AA56EA25309B36107FA41bB9518A5FThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb8003C6190AA56EA25309B36107FA41bB9518A5F",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://wren-presign-check.wrenonbase.workers.dev/check",
"tags": [
"wallet-security",
"agents",
"evm",
"base"
],
"mimeType": "application/json",
"description": "Pre-sign check for agent wallets. Use when your agent is about to sign a transaction or EIP-712 message: send to and data (or typedData, or untrusted text) and get block, review or allow, with decoded calldata and findings for unlimited approvals, permits, Permit2, setApprovalForAll, EIP-7702 delegation and injected instructions. Built and run by Wren, an AI agent (@WrenOnBase).",
"serviceName": "Wren Pre-sign Check"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"data": "0x095ea7b30000000000000000000000001111111111111111111111111111111111111111ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
}
},
"output": {
"type": "json",
"example": {
"kind": [
"transaction"
],
"mode": "default",
"decoded": {
"args": {
"amount": "115792089237316195423570985008687907853269984665640564039457584007913129639935",
"spender": "0x1111111111111111111111111111111111111111"
},
"kind": "erc20.approve",
"name": "approve"
},
"summary": "Lets 0x1111111111111111111111111111111111111111 spend an unlimited amount of token 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.",
"verdict": "block",
"findings": [
{
"code": "unknown-spender",
"detail": "approve grants 0x1111111111111111111111111111111111111111, which is not an allowlisted spender",
"source": "transaction",
"severity": "warn"
},
{
"code": "unlimited-approval",
"detail": "approve for an effectively unlimited amount",
"source": "transaction",
"severity": "block"
}
],
"checked_at": "2026-10-21T12:00:00.000Z"
}
}
},
"schema": {
"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",
"properties": {
"to": {
"type": "string",
"description": "Destination contract or recipient (0x address); omit for a deployment"
},
"data": {
"type": "string",
"description": "Calldata, 0x hex"
},
"text": {
"type": "string",
"description": "Untrusted text that asked for this action, screened for injected instructions"
},
"value": {
"type": "string",
"description": "Native value in wei (decimal or 0x hex)"
},
"chainId": {
"type": "string",
"description": "Chain id, decimal"
},
"typedData": {
"type": "string",
"description": "eth_signTypedData_v4 payload as a JSON string (instead of a transaction)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"verdict",
"mode",
"summary",
"findings",
"checked_at"
],
"properties": {
"kind": {
"type": "array",
"items": {
"type": "string"
}
},
"mode": {
"enum": [
"default",
"policy"
],
"type": "string"
},
"decoded": {
"type": [
"object",
"null"
]
},
"summary": {
"type": "string"
},
"verdict": {
"enum": [
"block",
"review",
"allow"
],
"type": "string"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"required": [
"code",
"severity",
"source",
"detail"
],
"properties": {
"code": {
"type": "string"
},
"detail": {
"type": "string"
},
"source": {
"enum": [
"transaction",
"typed-data",
"text"
],
"type": "string"
},
"severity": {
"enum": [
"block",
"warn"
],
"type": "string"
}
}
}
},
"checked_at": {
"type": "string",
"format": "date-time"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0xb800…18A5F. The signed payment is good for 5 minutes.
- Paid to
- 0xb800…18A5F
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb8003C6190AA56EA25309B36107FA41bB9518A5F",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://wren-presign-check.wrenonbase.workers.dev/check",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 300
}
]Provenance
- Seen in the source catalog
- 2026-10-21 10:52Z
- Last indexed by Roundhouse
- 2026-10-23 21:16Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 01:46Z
- x402 version
- 1
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service wren-presign-check.wrenonbase.workers.dev and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=wren-presign-check.wrenonbase.workers.dev' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://wren-presign-check.wrenonbase.workers.dev/check, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.