# Esker

**Canonical:** https://apis.io/providers/esker/  
**Website:** https://www.esker.com/  
**APIs profiled:** 3

Esker is a software company that automates document-driven business processes for the Office of the CFO, with cloud solutions spanning Source-to-Pay (accounts payable, procurement) and Order-to-Cash (order management, credit, collections, e-invoicing), plus document delivery, fax (VSI-Fax) and terminal emulation products. Its site describes them as document automation and order management software that helps businesses cut costs and increase efficiencies. Developers integrate through the Esker on Demand Web Services API (SOAP/WSDL session, submission and query services), documented at doc.esker.com.

## Kin Score — 31.6 / 100 (thin)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 75.0 |
| Contract Quality | 0.0 |
| Contract Governance | 18.2 |
| Operational Transparency | 18.4 |
| Developer Ergonomics | 42.9 |
| Access Clarity | 36.8 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 39.2 (matched via fallback).

## Agent readiness — 20.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | no |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | na |

## APIs (3)

- **Esker on Demand Session Service** — Entry point of the Esker on Demand Web Service: retrieves the service bindings (GetBindings) and opens or closes an authenticated session (Login, Logout, GetSessionInformation)....
- **Esker on Demand Submission Service** — Manages documents and submits them to Esker on Demand for processing and delivery (fax, mail, email and other transports). SOAP 1.1 service (urn:SubmissionService2); the docs re...
- **Esker on Demand Query Service** — Queries and manages documents already submitted to Esker on Demand: query transports, attachments and statistics, download files, approve, cancel and resubmit. SOAP 1.1 service ...

## Security (3)

- **Esker Authentication** — 1 scheme
- **Esker Domain Security** — TLSv1.3 · DMARC
- **Esker Trust Center** — ISO 27001, HIPAA, GDPR

## Plans (1)

- **Esker Plans Pricing**

## Tags

Company, Accounts Payable, Order-to-Cash, Source-to-Pay, Document Automation, E-Invoicing, Procurement, SOAP

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