aid: fullseam
name: Fullseam
description: >-
  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.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://fullseam.com/static/frontend/fullseam-icon.svg
url: https://raw.githubusercontent.com/api-evangelist/fullseam/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Accounting
- Finance
- FinOps
- AI Agents
- Accounts Payable
- Accounts Receivable
- Reconciliation
- Cash Application
- Automation
- Fintech
apis: []
common:
- type: Website
  url: https://fullseam.com
- type: About
  url: https://fullseam.com/about
- type: CaseStudies
  url: https://fullseam.com/case-studies
- type: Login
  url: https://app.fullseam.com
- type: Support
  url: https://fullseam.com/book
- type: PrivacyPolicy
  url: https://fullseam.com/privacy
- type: TermsOfService
  url: https://fullseam.com/terms
- type: GitHubOrganization
  url: https://github.com/FullSeam
- type: Security
  url: https://fullseam.com/security
- type: Compliance
  url: https://fullseam.com/security
- type: TrustCenter
  url: security/fullseam-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/fullseam-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/fullseam-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence