# Fullseam

**Canonical:** https://apis.io/providers/fullseam/  
**Website:** https://fullseam.com  
**APIs profiled:** 0

FullSeam builds AI agents for corporate accounting and finance operations teams, automating the manual work that happens outside traditional accounting software. Its agents handle accounts receivable (following up on payments, generating requested documentation, and entering invoices into customer AP portals), accounts payable (extracting invoices from multiple sources, matching them against purchase orders and contracts, chasing vendors for missing information, and categorizing expenses before posting to the general ledger), cash application, and reconciliation. FullSeam integrates with existing systems including QuickBooks, Xero, NetSuite, Sage, Bill, Stripe, HubSpot, Salesforce, and PandaDoc rather than requiring a platform migration, flagging exceptions with full context for human review and maintaining audit logs for compliance. Founded by the team behind TaxProper (acquired by Opendoor), FullSeam is a Y Combinator Winter 2026 company.

## Kin Score — 16.4 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 16.4).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 4.8 |
| Commercial Clarity | 43.4 |
| Access Clarity | 43.4 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (3)

- **Fullseam Domain Security** — TLSv1.3 · HSTS · DMARC
- **Fullseam Vulnerability Disclosure** — Hackerone · contact published
- **Fullseam Trust Center** — SOC 2 Type 1, SOC 2 Type 2, HIPAA

## Tags

Company, Accounting, Finance, FinOps, AI Agents, Accounts Payable, Accounts Receivable, Reconciliation, Cash Application, Automation, Fintech

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/fullseam/). Scores are computed from the provider's own public artifacts under a published rubric.