x402.jev
Experimental pay-per-call access to TypeSafe's Jev System One model through Baking Bad's paid service. Typed answers over x402 or MPP, no API key, demo use only.
InferenceLiveeip155:8453Exactvia cdp
Decisions
Calls · 30d
3
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 6 snapshots so far.
$0.001057
Verified settled volume
1 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0002
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-18 19:09Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x26e80e1d98d89E933f2D31955E719D19d214E779The 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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.0002USDC≈ $0.0002 USD
on Base · exact scheme
Pay 0.0002 USDC on Base to 0x26e8…4E779. The signed payment is good for 5 minutes.
- Paid to
- 0x26e8…4E779
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 200 smallest units
0.000024USDC≈ $0.000024 USD
on Base · batch-settlement scheme
Pay 0.000024 USDC on Base to 0x26e8…4E779. The signed payment is good for 5 minutes.
- Paid to
- 0x26e8…4E779
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 24 smallest units
200units
on eip155:42793 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x26e8…4E779
- Token contract
- 0x796E…f00F9
- Payment window
- 5 minutes
200units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 4SHMcq…1PWKX
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x26e80e1d98d89E933f2D31955E719D19d214E779",
"amount": "200",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 3600,
"receiverAuthorizer": "0x9E219e07Cbe87C201A303e2b86f522a5A8E0FF54"
},
"payTo": "0x26e80e1d98d89E933f2D31955E719D19d214E779",
"amount": "24",
"scheme": "batch-settlement",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x796Ea11Fa2dD751eD01b53C372fFDB4AAa8f00F9",
"extra": {
"name": "USD Coin",
"version": "2",
"assetTransferMethod": "permit2"
},
"payTo": "0x26e80e1d98d89E933f2D31955E719D19d214E779",
"amount": "200",
"scheme": "exact",
"network": "eip155:42793",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "4SHMcqadX3DViKFermsfRSzGVSF7XLMpZWyJanK1PWKX",
"amount": "200",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"model": "jev-latest",
"state": "Help! My payouts have been failing for 3 days.",
"questions": {
"is_urgent": {
"type": "noul",
"criteria": {
"true": "Explicitly time-sensitive",
"false": "No urgency expressed"
},
"instructions": "Does this convey urgency?"
},
"department": {
"type": "choice",
"criteria": {
"sales": "Pricing, upgrades, new accounts",
"billing": "Payments, invoicing, refunds",
"technical": "Bugs, outages, integrations"
},
"instructions": "Which team should handle this?"
},
"frustration": {
"type": "score",
"criteria": [
"Calm",
"Frustrated",
"Very angry"
],
"instructions": "How frustrated is the customer?"
}
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"model": "jev-1.13.0",
"usage": {
"input_tokens": 312,
"output_tokens": 48
},
"answers": {
"is_urgent": {
"noul": 0.92,
"type": "noul"
},
"department": {
"type": "choice",
"choice": "technical",
"confidence": 0.82,
"probabilities": {
"sales": 0.07,
"billing": 0.08,
"technical": 0.85
}
},
"frustration": {
"type": "score",
"score": 1.6,
"legend": {
"0": "Calm",
"1": "Frustrated",
"2": "Very angry"
},
"confidence": 0.78,
"probabilities": {
"0": 0.05,
"1": 0.3,
"2": 0.65
}
}
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"state",
"model",
"questions"
],
"properties": {
"model": {
"type": "string",
"example": "jev-latest",
"description": "Required model name or alias. Discover aliases with GET /v1/models; supported versioned IDs can be accepted even when not listed. The service does not insert a default."
},
"state": {
"anyOf": [
{
"type": "string"
},
{
"type": "object"
},
{
"type": "array"
}
],
"example": "Help! My payouts have been failing for 3 days.",
"description": "Shared text or structured JSON context for all questions. Use named fields for multiple records or facts. Jev evaluates text, not raw images, audio, or video."
},
"questions": {
"type": "object",
"description": "A map of question id to question. Answers come back under the same ids; the ids themselves are not sent to the model.",
"minProperties": 1,
"additionalProperties": {
"oneOf": [
{
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"enum": [
"noul"
],
"type": "string"
},
"criteria": {
"anyOf": [
{
"type": "object",
"properties": {
"true": {
"anyOf": [
{
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "array",
"items": {}
}
],
"description": "Text or structured context used to describe a judgment or rubric level."
},
{
"type": "null"
}
],
"description": "What qualifies as yes."
},
"false": {
"anyOf": [
{
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "array",
"items": {}
}
],
"description": "Text or structured context used to describe a judgment or rubric level."
},
{
"type": "null"
}
],
"description": "What qualifies as no."
}
},
"description": "Optional definitions of the yes and no outcomes."
},
{
"type": "null"
}
],
"description": "Optional yes/no definitions; omission or null is allowed."
},
"instructions": {
"anyOf": [
{
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "array",
"items": {}
}
],
"description": "Text or structured context used to describe a judgment or rubric level."
},
{
"type": "null"
}
],
"description": "The judgment to make, as text or structured context. The live upstream schema permits omission or null; supply meaningful instructions for useful evaluations."
}
},
"description": "A yes/no question; the answer is the probability of yes"
},
{
"type": "object",
"required": [
"type",
"criteria"
],
"properties": {
"type": {
"enum": [
"choice"
],
"type": "string"
},
"criteria": {
"type": "object",
"description": "Option names mapped to text or structured descriptions. Null uses the option name alone. Include a no-match option when none of the other options may apply.",
"additionalProperties": {
"anyOf": [
{
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "array",
"items": {}
}
],
"description": "Text or structured context used to describe a judgment or rubric level."
},
{
"type": "null"
}
],
"description": "Text or structured context, or null when no description is supplied."
}
},
"instructions": {
"anyOf": [
{
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "array",
"items": {}
}
],
"description": "Text or structured context used to describe a judgment or rubric level."
},
{
"type": "null"
}
],
"description": "The judgment to make, as text or structured context. The live upstream schema permits omission or null; supply meaningful instructions for useful evaluations."
}
},
"description": "Picks one option from the set you define"
},
{
"type": "object",
"required": [
"type",
"criteria"
],
"properties": {
"type": {
"enum": [
"score"
],
"type": "string"
},
"criteria": {
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "array",
"items": {}
}
],
"description": "Text or structured context used to describe a judgment or rubric level."
},
"minItems": 1,
"description": "Ordered rubric levels indexed from zero, expressed as text or structured descriptions. The live upstream schema permits one level; TypeSafe's usage guide recommends at least two for a meaningful scale."
},
"instructions": {
"anyOf": [
{
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "array",
"items": {}
}
],
"description": "Text or structured context used to describe a judgment or rubric level."
},
{
"type": "null"
}
],
"description": "The judgment to make, as text or structured context. The live upstream schema permits omission or null; supply meaningful instructions for useful evaluations."
}
},
"description": "Rates the state against ordered levels"
}
],
"description": "One independent typed judgment about the shared state. Questions cannot read other answers in the same request. Give each question its full meaning; its map key is not shown to the model."
}
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"erc20ApprovalGasSponsoring": {
"info": {
"version": "1",
"description": "The facilitator broadcasts a pre-signed ERC-20 approve() transaction to grant Permit2 allowance."
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"from",
"asset",
"spender",
"amount",
"signedTransaction",
"version"
],
"properties": {
"from": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the sender (token owner)."
},
"asset": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the ERC-20 token contract."
},
"amount": {
"type": "string",
"pattern": "^[0-9]+$",
"description": "The amount approved (uint256). Always MaxUint256."
},
"spender": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the spender (Canonical Permit2)."
},
"version": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)*$",
"description": "Schema version identifier."
},
"signedTransaction": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$",
"description": "The RLP-encoded signed EIP-1559 transaction as a hex string."
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-18 19:09Z
- Last indexed by Roundhouse
- 2026-09-25 05:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-18 18:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
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. 6 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 x402.jev 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=x402.jev' 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://jev.agents.bakingbad.dev/v1/systemone, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.