agents.writerslogic.com
Finds fine-print divergences between two prediction markets (e.g. Polymarket vs Kalshi), prices basis risk, and returns ARBITRAGE_SAFE / BASIS_RISK_TRAP / NO_EDGE with Kelly hedge sizing. Prices are USD per share (0-1).
SearchLiveeip155:8453Exactvia facilitator:payAI
x402C2paToipVerifiable-credentialsResearch
Settlements · 30d
290↓ 89%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$126.35
Verified settled volume
290 settlements proven x402 by their on-chain EIP-3009 marker.
$0.750
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
0x34C2D4B19b2D61Da1eC98A3463B8E9994FB86522The 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.
{
"code": "payment_required",
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"assetTransferMethod": "eip3009"
},
"payTo": "0x34C2D4B19b2D61Da1eC98A3463B8E9994FB86522",
"amount": "750000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"price": "0.75",
"chainId": 8453,
"headers": {
"txHash": "X-Payment-Tx",
"signature": "X-Payment-Signature"
},
"instructions": "Transfer at least `amount` of asset to payTo, wait for minConfirmations, sign signedMessage (EIP-191 personal_sign, txHash lowercased) with the sending account, then retry with both headers. Each transaction pays for exactly one request to this resource and must be mined within maxTimeoutSeconds.",
"signedMessage": "x402 payment\nchainId: 8453\ntx: <txhash>\nresource: POST /api/v1/arbitrage-lawyer",
"minConfirmations": 2
},
"payTo": "0x34C2D4B19b2D61Da1eC98A3463B8E9994FB86522",
"amount": "750000",
"scheme": "onchain-tx",
"network": "eip155:8453",
"maxAmountRequired": "750000",
"maxTimeoutSeconds": 86400
}
],
"resource": {
"url": "https://agents.writerslogic.com/api/v1/arbitrage-lawyer",
"tags": [
"x402",
"c2pa",
"toip",
"verifiable-credentials",
"research",
"security",
"legal",
"finance"
],
"mimeType": "application/json",
"description": "Finds fine-print divergences between two prediction markets (e.g. Polymarket vs Kalshi), prices basis risk after fees, and returns verdict.action ARBITRAGE_SAFE / LOW_ANNUALIZED_YIELD / BASIS_RISK_TRAP / NO_EDGE / INSUFFICIENT_EVIDENCE with edge in bps, the probability both legs lose, days to resolution, annualized return and Kelly hedge size capped by top-of-book depth. Each market can be given as a Polymarket slug or URL or a Kalshi ticker (rules, best asks and per-leg fees are read live) or as pasted rules and prices (USD per share, 0-1). Every cited clause is checked verbatim against the rules you supplied. If the rules analysis fails after live prices were read, you still get the signed price math as a partial result. Not financial advice.",
"serviceName": "WritersLogic Verifiable AI Agent Hub"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"marketA": {
"title": "Will Bitcoin reach $150,000 by December 31, 2027?",
"feeBps": 0,
"endDate": "2027-12-31T23:59:00-05:00",
"noPrice": 0.7,
"platform": "Polymarket",
"yesPrice": 0.31,
"resolutionRules": "This market will resolve to Yes if any Binance 1 minute candle for BTC/USDT between Jan 1, 2027 00:00 and Dec 31, 2027 23:59 ET has a final High price of $150,000 or higher. Otherwise it resolves to No. The resolution source is Binance BTC/USDT with the 1m candle selected."
},
"marketB": {
"title": "Bitcoin price at the end of 2027: above $150,000?",
"endDate": "2027-12-31T17:00:00-05:00",
"noPrice": 0.79,
"noFeeBps": 147,
"platform": "Kalshi",
"yesPrice": 0.22,
"yesFeeBps": 546,
"resolutionRules": "If the CF Benchmarks BRTI price at 5:00 PM EST on December 31, 2027 is above $150,000, then the market resolves to Yes. Otherwise it resolves to No. The Source Agency is CF Benchmarks; the value is the average BRTI over the 60 seconds before the expiration time."
},
"minEdgeBps": 100,
"bankrollUsd": 10000
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json"
}
},
"schema": {
"type": "object",
"$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": [
"marketA",
"marketB"
],
"properties": {
"marketA": {
"type": "object",
"properties": {
"title": {
"type": "string",
"maxLength": 500,
"minLength": 1
},
"feeBps": {
"type": "number",
"maximum": 2000,
"minimum": 0,
"description": "Trading fee on this leg in bps of notional."
},
"market": {
"type": "string",
"maxLength": 500,
"minLength": 3,
"description": "Polymarket slug, market URL or conditionId, or a Kalshi ticker or URL. Fills platform, title, resolution rules, best-ask prices, per-leg fees and end date from the live market; any field you also pass overrides it. Without market, platform, title, resolutionRules, yesPrice and noPrice are required."
},
"endDate": {
"type": "string",
"maxLength": 40,
"minLength": 10,
"description": "ISO date this market resolves; sets days to resolution and the annualized return."
},
"noPrice": {
"type": "number",
"maximum": 1,
"minimum": 0,
"description": "Best ask for one No share in USD (0-1)."
},
"noFeeBps": {
"type": "number",
"maximum": 2000,
"minimum": 0,
"description": "Fee in bps of notional for buying No here; overrides feeBps for that leg."
},
"platform": {
"type": "string",
"maxLength": 100,
"minLength": 1,
"description": "e.g. Polymarket, Kalshi"
},
"yesPrice": {
"type": "number",
"maximum": 1,
"minimum": 0,
"description": "Best ask for one Yes share in USD (0-1)."
},
"yesFeeBps": {
"type": "number",
"maximum": 2000,
"minimum": 0,
"description": "Fee in bps of notional for buying Yes here; overrides feeBps for that leg."
},
"description": {
"type": "string",
"maxLength": 5000
},
"resolutionRules": {
"type": "string",
"maxLength": 20000,
"minLength": 1,
"description": "Exact resolution rules and fine print."
}
},
"additionalProperties": false
},
"marketB": {
"type": "object",
"properties": {
"title": {
"type": "string",
"maxLength": 500,
"minLength": 1
},
"feeBps": {
"type": "number",
"maximum": 2000,
"minimum": 0,
"description": "Trading fee on this leg in bps of notional."
},
"market": {
"type": "string",
"maxLength": 500,
"minLength": 3,
"description": "Polymarket slug, market URL or conditionId, or a Kalshi ticker or URL. Fills platform, title, resolution rules, best-ask prices, per-leg fees and end date from the live market; any field you also pass overrides it. Without market, platform, title, resolutionRules, yesPrice and noPrice are required."
},
"endDate": {
"type": "string",
"maxLength": 40,
"minLength": 10,
"description": "ISO date this market resolves; sets days to resolution and the annualized return."
},
"noPrice": {
"type": "number",
"maximum": 1,
"minimum": 0,
"description": "Best ask for one No share in USD (0-1)."
},
"noFeeBps": {
"type": "number",
"maximum": 2000,
"minimum": 0,
"description": "Fee in bps of notional for buying No here; overrides feeBps for that leg."
},
"platform": {
"type": "string",
"maxLength": 100,
"minLength": 1,
"description": "e.g. Polymarket, Kalshi"
},
"yesPrice": {
"type": "number",
"maximum": 1,
"minimum": 0,
"description": "Best ask for one Yes share in USD (0-1)."
},
"yesFeeBps": {
"type": "number",
"maximum": 2000,
"minimum": 0,
"description": "Fee in bps of notional for buying Yes here; overrides feeBps for that leg."
},
"description": {
"type": "string",
"maxLength": 5000
},
"resolutionRules": {
"type": "string",
"maxLength": 20000,
"minLength": 1,
"description": "Exact resolution rules and fine print."
}
},
"additionalProperties": false
},
"minEdgeBps": {
"type": "number",
"maximum": 10000,
"minimum": 0,
"description": "Default 100 (1%)."
},
"bankrollUsd": {
"type": "number",
"maximum": 1000000000000,
"minimum": 0,
"description": "Used to convert the Kelly fraction to USD."
},
"minAnnualizedReturnPct": {
"type": "number",
"maximum": 10000,
"minimum": 0,
"description": "Minimum annualized risk-adjusted return, in percent, for verdict.action ARBITRAGE_SAFE (default 5). Below it the action is LOW_ANNUALIZED_YIELD. Applied only when both end dates are known."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"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.
0.75USDC≈ $0.75 USD
on Base · exact scheme
Pay 0.75 USDC on Base to 0x34C2…86522. The signed payment is good for 5 minutes.
- Paid to
- 0x34C2…86522
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 750000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"assetTransferMethod": "eip3009"
},
"payTo": "0x34C2D4B19b2D61Da1eC98A3463B8E9994FB86522",
"amount": "750000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"marketA": {
"title": "Will Candidate X win the 2028 election?",
"feeBps": 0,
"noPrice": 0.49,
"platform": "Polymarket",
"yesPrice": 0.52,
"resolutionRules": "Resolves Yes if the Associated Press, Fox News, and NBC all call the race for Candidate X by Jan 20, 2029 12:00 PM ET."
},
"marketB": {
"title": "Who will win the 2028 presidential election? Candidate X",
"feeBps": 70,
"noPrice": 0.45,
"platform": "Kalshi",
"yesPrice": 0.55,
"resolutionRules": "Resolves Yes if Candidate X is inaugurated as President on Jan 20, 2029."
},
"minEdgeBps": 100,
"bankrollUsd": 10000
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object"
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-11-04 20:23Z
- Last indexed by Roundhouse
- 2026-11-12 02:45Z
- Last enriched (probe, favicon, geo)
- 2026-11-06 04:45Z
- x402 version
- 2
- 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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service agents.writerslogic.com 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=agents.writerslogic.com' 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://agents.writerslogic.com/api/v1/arbitrage-lawyer, 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.