Roundhouse

almanac.locomot.io

Verified reality, a trust layer, and a deterministic workbench for AI agents — facts (sky, field, time, verse), fair randomness, beacon timestamps, timelock sealing, sealed-bid auctions, plus citations, proofreading, readability, diffs, parsing, unit conversion and signature recovery. Pay-per-call over x402 on Base; every answer reproducible and signed. Trust you can verify.

SearchLiveeip155:8453Exactvia cdp
https://almanac.locomot.io/cite
Calls · 30d
6↑ 56%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$0.20
Verified settled volume
108 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
6
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-17 17:22Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xa3091005a76b1480F1897a9D0C2e1c55B7767674

The 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.

{
  "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/cite",
  "price_usd": 0.001,
  "parameters": {
    "note": "send these as query parameters on the SAME url; a paid request missing any of them answers 422 and takes no money",
    "optional": [
      {
        "name": "type",
        "about": "article | book | chapter | web"
      },
      {
        "name": "authors",
        "about": "'Family, Given; Family2, Given2' (semicolon-separated)"
      },
      {
        "name": "year",
        "about": "publication year"
      },
      {
        "name": "container",
        "about": "journal / website / periodical name"
      },
      {
        "name": "volume"
      },
      {
        "name": "issue"
      },
      {
        "name": "pages"
      },
      {
        "name": "publisher"
      },
      {
        "name": "place",
        "about": "publisher city (Chicago/BibTeX)"
      },
      {
        "name": "doi"
      },
      {
        "name": "url"
      },
      {
        "name": "book_title",
        "about": "container book title (for a chapter)"
      },
      {
        "name": "editors",
        "about": "'Family, Given; ...' editors (for a chapter)"
      },
      {
        "name": "month"
      },
      {
        "name": "day"
      },
      {
        "name": "locator",
        "about": "page/paragraph for the in-text citation"
      },
      {
        "name": "title_case",
        "about": "apply mechanical headline title-case"
      },
      {
        "name": "notarize",
        "about": "also drand-timestamp the answer"
      }
    ],
    "required": [
      {
        "name": "style",
        "about": "apa | mla | chicago | bibtex"
      },
      {
        "name": "title",
        "about": "the work's title (taken verbatim — case is not guessed)"
      }
    ]
  },
  "description": "Deterministic citation formatter — APA 7, MLA 9, Chicago 17 author-date, BibTeX. From structured fields, returns the reference entry (markdown/html/plain) + the in-text citation, reproducing published style-manual examples exactly. For full author lists use POST. Every answer signed. Free sample, no payment required: GET /play/cite",
  "free_sample": "https://almanac.locomot.io/play/cite",
  "x402Version": 2,
  "sample_response": {
    "url": "https://almanac.locomot.io/cite/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.

0.001USDC≈ $0.001 USD
on Base · exact scheme

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": {
          "type": "article",
          "year": "1905",
          "pages": "891-921",
          "style": "apa",
          "title": "On the electrodynamics of moving bodies",
          "volume": "17",
          "authors": "Einstein, Albert",
          "container": "Annalen der Physik"
        }
      }
    },
    "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",
              "required": [
                "style",
                "title"
              ],
              "properties": {
                "doi": {
                  "type": "string"
                },
                "url": {
                  "type": "string"
                },
                "type": {
                  "type": "string",
                  "description": "article | book | chapter | web"
                },
                "year": {
                  "type": "string"
                },
                "issue": {
                  "type": "string"
                },
                "pages": {
                  "type": "string"
                },
                "place": {
                  "type": "string"
                },
                "style": {
                  "type": "string",
                  "description": "apa | mla | chicago | bibtex"
                },
                "title": {
                  "type": "string",
                  "description": "work title (verbatim case)"
                },
                "volume": {
                  "type": "string"
                },
                "authors": {
                  "type": "string",
                  "description": "'Family, Given; Family2, Given2'"
                },
                "container": {
                  "type": "string",
                  "description": "journal/site name"
                },
                "publisher": {
                  "type": "string"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "properties": {
            "style": {
              "type": "string"
            },
            "intext": {
              "type": "string"
            },
            "reference": {
              "type": "object"
            },
            "source_type": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-17 17:22Z
Last indexed by Roundhouse
2026-09-24 07:30Z
Last enriched (probe, favicon, geo)
2026-09-10 08:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
Report

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. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show 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/cite, 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.