Hallucination Rate
by aialign.halowerk.com in Onchain & crypto
Tokenizes each claim and its supplied evidence, removes a small declared English stop-word list, and reports the fraction of unique claim tokens present in evidence. Coverage below a supplied threshold is flagged. This is lexical grounding screening only: overlap does not prove truth, low overlap does not prove hallucination, and the service does not retrieve or validate evidence.
https://aialign.halowerk.com/v1/hallucination-rate- Price
- $0.004
- per call in USDC
- Uptime
- 100%
- last 30 days
- Response time
- 107 ms
- 175 ms slowest 5%
- Last check
- Passed
- 2 h ago, next any minute now
Reliability
Status and outage history · Atom feed · Watch with other listings
How to call it
POST https://aialign.halowerk.com/v1/hallucination-rate
Each call costs $0.004 in USDC on Base, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
POST https://aialign.halowerk.com/v1/hallucination-rate
content-type: application/json
{
"claims": [
{
"claim_id": "claim-1",
"claim_text": "The turbine generated 42 megawatt hours in August.",
"evidence_texts": [
"The August meter record reports turbine output of 42 megawatt hours."
]
},
{
"claim_id": "claim-2",
"claim_text": "The turbine had zero maintenance downtime.",
"evidence_texts": [
"The August meter record reports turbine output of 42 megawatt hours."
]
}
],
"minimum_coverage_fraction": 0.6
}Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
claims | array of object | Yes | |
minimum_coverage_fraction | number | Yes |
Example response
The listing has no example response.
Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://aialign.halowerk.com/v1/hallucination-rate' \
-H 'content-type: application/json' \
--data-raw '{"claims":[{"claim_id":"claim-1","claim_text":"The turbine generated 42 megawatt hours in August.","evidence_texts":["The August meter record reports turbine output of 42 megawatt hours."]},{"claim_id":"claim-2","claim_text":"The turbine had zero maintenance downtime.","evidence_texts":["The August meter record reports turbine output of 42 megawatt hours."]}],"minimum_coverage_fraction":0.6}'
# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://aialign.halowerk.com/v1/hallucination-rate' \
-H 'content-type: application/json' \
--data-raw '{"claims":[{"claim_id":"claim-1","claim_text":"The turbine generated 42 megawatt hours in August.","evidence_texts":["The August meter record reports turbine output of 42 megawatt hours."]},{"claim_id":"claim-2","claim_text":"The turbine had zero maintenance downtime.","evidence_texts":["The August meter record reports turbine output of 42 megawatt hours."]}],"minimum_coverage_fraction":0.6}' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
// Pays at most $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Faialign.halowerk.com%2Fv1%2Fhallucination-rate&method=POST
const res = await pay("https://aialign.halowerk.com/v1/hallucination-rate", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"claims": [
{
"claim_id": "claim-1",
"claim_text": "The turbine generated 42 megawatt hours in August.",
"evidence_texts": [
"The August meter record reports turbine output of 42 megawatt hours."
]
},
{
"claim_id": "claim-2",
"claim_text": "The turbine had zero maintenance downtime.",
"evidence_texts": [
"The August meter record reports turbine output of 42 megawatt hours."
]
}
],
"minimum_coverage_fraction": 0.6
}),
});
console.log(res.status, await res.text());Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client
# Pays at most $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.post(
"https://aialign.halowerk.com/v1/hallucination-rate",
json={
"claims": [
{
"claim_id": "claim-1",
"claim_text": "The turbine generated 42 megawatt hours in August.",
"evidence_texts": [
"The August meter record reports turbine output of 42 megawatt hours.",
],
},
{
"claim_id": "claim-2",
"claim_text": "The turbine had zero maintenance downtime.",
"evidence_texts": [
"The August meter record reports turbine output of 42 megawatt hours.",
],
},
],
"minimum_coverage_fraction": 0.6,
},
)
print(res.status_code, res.text)Security scan
No findings
We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 2 h ago | Passed | 402 | 102 ms | $0.004 |
| 5 h ago | Passed | 402 | 155 ms | $0.004 |
| 9 h ago | Passed | 402 | 107 ms | $0.004 |
| 12 h ago | Passed | 402 | 101 ms | $0.004 |
| 15 h ago | Passed | 402 | 99 ms | $0.004 |
Show 10 older checks
| 18 h ago | Passed | 402 | 220 ms | $0.004 |
| 21 h ago | Passed | 402 | 96 ms | $0.004 |
| 24 h ago | Passed | 402 | 106 ms | $0.004 |
| 28 h ago | Passed | 402 | 120 ms | $0.004 |
| 33 h ago | Passed | 402 | 98 ms | $0.004 |
| 38 h ago | Passed | 402 | 106 ms | $0.004 |
| 44 h ago | Passed | 402 | 104 ms | $0.004 |
| 2 days ago | Passed | 402 | 132 ms | $0.004 |
| 2 days ago | Passed | 402 | 98 ms | $0.004 |
| 2 days ago | Passed | 402 | 110 ms | $0.004 |