What we tested
Probed live on 26 Sep 2026 against rubric v1.2. 2 of 5 checks passed. 2 unknown.
PROBE-VERIFIEDtier 2 of 3
Context
141 sites in the index share the category accounting and invoicing software. 26 transactional sites share it.
How we grade
Three tiers. Every listing shows which one it has reached, and when. The rubric.
tier 1Declared
The site says agents are welcome in its robots.txt. A permission, not a capability.
tier 2Probe-verified
We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
tier 3Behaviourally verified
An agent completed the action end to end — booked, bought, submitted — and it worked.
Own this site?
1 check did not pass when we last looked: MCP server card answers. Each is a small, specific fix; the rubric says exactly what we look for.
Behavioural verification — an agent completing your key actions end to end, with the date published here — opens to a small founding cohort first. Leave an email to be in it.
Related verified sites
PalgakalkulaatorEstonian payroll calculator converting gross salary, net salary, and employer cost with detailed tax and contribution breakdowns for tax years 2024 to 2026, serving users in Tallinn, Estonia.
accounting and invoicing software Classified BillingFree online invoice generator software for freelancers, consultants, and small businesses to simplify billing and get paid faster.
accounting and invoicing software Tyms Developer APIREST API platform for AI-native accounting integration, enabling automation of bookkeeping, financial record creation, invoice and expense management, report generation, and OAuth-based business data access.
accounting and invoicing software 볼타 사용 가이드Documentation for 볼타, a Korean service automating electronic tax invoice issuance, cash receipts, business registration status retrieval, and tax invoice workflow management including amendments and reverse issuance.
accounting and invoicing software Bookeeping.ai DocsAPI documentation for Bookeeping.ai, enabling programmatic management of invoices, transactions, accounts, categories, and counterparties via HTTP requests.
accounting and invoicing software Business OSAPI documentation for Business OS integrating DATEV accounting systems and European banks via PSD2, enabling financial data retrieval, payment initiation, document upload, and accounting workflow automation.
accounting and invoicing software Campfire API DocsDocumentation for Campfire's accounting APIs including bills, invoices, journal entries, financial statements, bank accounts, transactions, and webhooks for automating AP/AR and financial workflows.
accounting and invoicing software ClearSpend AIDocumentation for ClearSpend AI, a platform to reconcile company transactions with invoices and receipts, track subscriptions and renewals, and sync matched proof back to Xero accounting software.
accounting and invoicing software Record generated from a live database query. Method: about the index.
How we found this site: probe discovery. This site didn’t declare agent access — we found it by checking the open web. Everything above was tested the same way, against the same rubric, on the date shown. How we choose what to check, and how to opt out →