almanac.locomot.io
Verified reality and a trust layer for AI agents — deterministic facts (sky, field, time, verse) plus fair randomness, beacon timestamps, timelock sealing, and a sealed-bid auction house. Pay-per-call over x402 on Base; every answer reproducible and signed. Trust you can verify.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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.
{
"docs": "https://almanac.locomot.io/llms.txt",
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xa3091005a76b1480F1897a9D0C2e1c55B7767674",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": "https://almanac.locomot.io/timestamp",
"price_usd": 0.001,
"parameters": {
"optional": [
{
"name": "op",
"about": "stamp|verify"
},
{
"name": "data",
"about": "text to stamp (we sha256 it)"
},
{
"name": "hash",
"about": "OR a 64-hex sha256 digest (private)"
},
{
"name": "round",
"about": "pin a drand round; verify requires it"
}
],
"required": []
},
"description": "Verifiable timestamp (trustless proof-of-existence / freshness proof): bind a hash to a drand round for an anti-backdating receipt — proves data existed no earlier than a public instant, with no trusted timestamp authority. Privacy: stamp an opaque sha256 digest.",
"x402Version": 2,
"sample_response": {
"url": "https://almanac.locomot.io/timestamp/example",
"note": "free, and it IGNORES your parameters -- a fixed input, so you can see the exact response shape before paying"
},
"pay_once_instead": {
"buy": "POST https://almanac.locomot.io/credits (x402, $1.00 buys $1.20 of credit)",
"why": "one payment, then no wallet and no signature per call",
"then": "call this same URL with header Authorization: Bearer tsk_...",
"balance": "GET https://almanac.locomot.io/credits/balance (free)"
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.001 USDC on Base to 0xa309…67674. The signed payment is good for 5 minutes.
- Paid to
- 0xa309…67674
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 1000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xa3091005a76b1480F1897a9D0C2e1c55B7767674",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"op": "stamp",
"data": "i decided X before the match"
}
}
},
"schema": {
"type": "object",
"$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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"op": {
"enum": [
"stamp",
"verify"
],
"type": "string",
"description": "operation; default stamp"
},
"data": {
"type": "string",
"description": "text to stamp (sha256'd)"
},
"hash": {
"type": "string",
"description": "OR a 64-hex sha256 digest (private)"
},
"round": {
"type": "integer",
"description": "pin a drand round; verify requires it"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"properties": {
"op": {
"type": "string"
},
"claim": {
"type": "string"
},
"proof": {
"type": "object"
},
"round": {
"type": "integer"
},
"beacon": {
"type": "object"
},
"digest": {
"type": "string"
},
"engine": {
"type": "string"
},
"commitment": {
"type": "string"
},
"digest_source": {
"type": "string"
},
"round_time_utc": {
"type": "string"
},
"not_earlier_than": {
"type": "string"
},
"deterministic_given_round": {
"type": "boolean"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-07-01 05:20Z
- Last indexed by Roundhouse
- 2026-07-30 16:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 20:45Z
- 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 almanac.locomot.io 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=almanac.locomot.io' 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://almanac.locomot.io/timestamp, 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.