logicnodes-io Exact answers over your data API

The Exact answers over your data API from logicnodes-io — 18 operation(s) for exact answers over your data.

Operations 18

POST /paid/v1/tools/table_calc Exact math over a table (sums, averages, per-group totals) — no hallucinated… #
POST /paid/v1/tools/verify_answer Check numbers before you send them (correct / wrong + the right value) ($0.01… #
POST /paid/v1/tools/quote_check Does the source really say this? (quote and citation check) ($0.01 per call) #
POST /paid/v1/tools/text_facts Exact counts, limits and differences for text ($0.002 per call) #
POST /paid/v1/tools/reconcile Reconcile two lists (bank vs ledger, invoices vs payments): matched… #
POST /paid/v1/tools/json_check Is this JSON valid and does it match the schema? #
POST /paid/v1/tools/invoice_check Compute or check an invoice exactly (lines, discounts, tax, shipping, total)… #
POST /paid/v1/tools/timesheet_calc Hours, overtime and pay from clock-in/out entries (exact) ($0.02 per call) #
POST /paid/v1/tools/list_ops Exact list operations: dedupe, sort, union, intersection, difference, compare… #
POST /paid/v1/tools/contact_normalize Clean and dedupe emails and phone numbers (E.164) ($0.005 per call) #
POST /paid/v1/tools/find_free_slots Meeting times that work for everyone (time zones and DST handled) ($0.005 per… #
POST /paid/v1/tools/date_series Recurring dates: every 2nd Tuesday, last business day of the month, every 2… #
POST /paid/v1/tools/table_join Join two tables on a key (VLOOKUP done exactly) ($0.005 per call) #
POST /paid/v1/tools/pii_redact Find and redact personal data and secrets in text before it is logged or shared… #
POST /paid/v1/tools/id_check Validate identifiers by their check digits (IBAN, routing number, barcode… #
POST /paid/v1/tools/table_profile Profile a spreadsheet: what every column holds and what is wrong with it… #
POST /paid/v1/tools/holiday_calendar Public holidays by rule: US federal, England and Wales bank holidays (with… #
POST /paid/v1/tools/fx_rate Currency conversion at official ECB reference rates (dated, never guessed)… #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/logicnodes-io:logicnodes-io-exact-answers-over-your-data-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

logicnodes-io-exact-answers-over-your-data-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: LogicNodes Exact answers over your data API
  version: 1.0.0
  description: 'Blockchain and finance tools AI agents can trust: exact answers or typed errors, never a plausible guess. 40+ tools for EVM chains and Aptos (balances, token amounts, transaction status and receipts, contract and calldata decoding, payment verification, gas on 14 chains), exact finance math, and ERC-8004 agent reputation. Every answer carries a receipt timestamped into Bitcoin. Free tier; pay per call in USDC via x402 on 13 networks, no API key.'
  x-guidance: 'How to use LogicNodes: 1) GET /v1/tools lists every tool with its JSON Schema. 2) POST /v1/tools/<name> with a JSON body, e.g. POST /v1/tools/evm_balance {"chain":"eip155:8453","address":"0x..."} or POST /v1/tools/token_amount_convert {"chain":"eip155:8453","asset":"<token address>","amount":"1.5","direction":"toBase"}. 3) Read "ok": true with "value", or "ok": false with a typed error: INVALID_INPUT (fix the field named), AMBIGUOUS_INPUT (pick one of the options listed and call again), NOT_FOUND, UPSTREAM_ERROR (retry). Chains are CAIP-2 ids (eip155:8453 Base, eip155:1 Ethereum, aptos:1); names like "base" are refused. Amounts are decimal strings, never floats. Pricing: free tools are unlimited; priced tools are free for 25 calls per day per IP, then the same URL returns 402 with x402 terms (USDC on Base, Solana, Polygon, Arbitrum and more: /v1/payments/methods); pay and retry. A failed call is never charged. MCP: /mcp/v2. Full guide: /agent-guide.'
  contact:
    email: denneyconner5@gmail.com
servers:
- url: https://logicnodes.io
tags:


# --- truncated at 32 KB (107 KB total) ---
# Full source: https://artifacts.apis.io/logicnodes-io/openapi/logicnodes-io-exact-answers-over-your-data-api-openapi.yml