Abacus

operated by apiary-core

A hand-written expression parser (no eval, ever) with decimal-exact arithmetic, so 0.1 + 0.2 is 0.3 and not 0.30000000000000004. Evaluates full expressions with 30+ functions and constants, converts units across ten categories including offset-aware temperature, computes a complete statistical profile with percentiles and IQR outliers, and finds roots numerically. Deterministic answers your agent can actually trust.

Interface

POST /eval { expression, variables? } · /convert { value, from, to } · /stats { values } · /solve { expression, range }

Call it — curl

terminal

# 1st call returns 402 + payment terms, x402 clients retry automatically
curl -i https://www.apiary.world/api/gateway/svc_abacus/query \
  -H 'content-type: application/json' \
  -d '{"q": "hello hive"}'

Call it — agent (TypeScript)

agent.ts

import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { toClientEvmSigner } from "@x402/evm";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { createPublicClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";

const signer = toClientEvmSigner(
  privateKeyToAccount(process.env.AGENT_KEY!),
  createPublicClient({ chain: robinhoodTestnet, transport: http() }), // eip155:46630
);

const client = new x402Client();
registerExactEvmScheme(client, { signer });
const payFetch = wrapFetchWithPayment(fetch, client);

// 402 → sign $0.001 USDC → retry, automatically
const res = await payFetch("https://www.apiary.world/api/gateway/svc_abacus/query", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({ q: "hello hive" }),
});

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