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Every AI OS, vertical SaaS, and embedded finance platform needs accounting. HeadlessCPA is the autonomous, audit-hardened infrastructure that runs it — at the speed of your product.
POST /v1/transactions/categorize{"transaction_id": "txn_8f2k","description": "STRIPE PAYOUT","amount": -4820.00}
// Response — 340ms
{"category": "Revenue","confidence": 0.98,"reasoning": "Stripe payout pattern","anomaly_flag": false,"audit_id": "aud_9x2k1"}Infrastructure you already use — connected on day one
The accounting agent runs continuously inside your product — no CPA queue, no batch processing, no waiting.
REST API or drop-in components. Integrate bank feeds from 10,000+ institutions, QB/Xero sync, and commerce data in minutes.
Proprietary ML + agentic reasoning categorizes transactions, detects anomalies, and generates reconciliations in under one second.
Full audit trail generated automatically. Every decision logged with reasoning. Edge cases (<5%) escalate to our licensed CPA network.
Autonomous reconciliation, intelligent sync, audit-hardened workflows, and white-label UI — wired together, always on.
Categorize and reconcile transactions in <1 second. Proprietary ML + agentic reasoning trained on millions of financial events. 95%+ accuracy out of the box, continuously improving.
Two-way sync with built-in conflict resolution, duplicate detection, and auto-correct. Maintains chart of accounts consistency and suggests account mapping from transaction patterns.
Every categorization decision logged with its reasoning chain. Compliance exports (1040, 1120, state/federal). Immutable audit trail from day one — built for when regulators ask questions.
Drop in your branding. Transaction review, exception queues, real-time P&L, and cash flow — all rendered in your product. Zero replatforming required.
By the time you wire Plaid + QB + categorization + an audit trail, you've spent 18 months and hired a team. Or you paste Claude into a spreadsheet and hope it doesn't hallucinate a journal entry.
| Build in-house | AI DIY (Claude / GPT) | HeadlessCPA | |
|---|---|---|---|
| Time to reconciliation | 12–18 months to build | <5 sec (no audit trail) | <1 sec + full audit log |
| Cost per transaction | Eng hours × months | $0.001 (no compliance) | $0.001 + audit-ready |
| QB / Xero sync | Build from scratch | Manual / brittle | Two-way auto-sync |
| Audit trail | You build it | None | Automatic, immutable |
| Compliance exports | You build it | Manual | Built-in (1040, 1120, PDF) |
| Scaling ceiling | Your infra team | Prompt-by-prompt | Unbounded (parallel agents) |
Every business in your platform needs accounting. Offer it as a native feature — priced as infrastructure, billed at SaaS margins. You collect recurring revenue; the agent handles the books.
Pre-tuned logic for the transactions, compliance rules, and reporting formats that actually matter in your market.
HeadlessCPA ships as an Agent Module — a pre-built, Fable5-compatible accounting agent you drop into your AI OS. Your agents call ours via MCP. We handle the accounting; you keep the customer relationship.
// Your Fable5 agent using HeadlessCPA via MCPconst books = await agent.use('headlesscpa');// Sync bank feedsawait books.hcpa_sync_bank_feeds({client_id: 'cli_9x2k'});// Categorize a transactionconst result = await books.hcpa_categorize({transaction_id: 'txn_8f2k',description: 'STRIPE PAYOUT',amount: -4820.00});// → { category: 'Revenue', confidence: 0.98,// audit_id: 'aud_9x2k1', timing_ms: 340 }// Close the books for Juneawait books.hcpa_close_period({client_id: 'cli_9x2k',period: '2026-06'});
AI frameworks are maturing fast. Accounting infrastructure built without audit trails and compliance baked in will fail when regulators and enterprises show up. We built it right from day one.
Not after the sprint. Not pending design review. Day one — because every piece of the accounting stack is pre-built, pre-integrated, and pre-tested.
The alternative path: 18 months, 8 engineers, $2–3M in build cost, and you still don't have an audit trail that satisfies a regulator.