# Omise

**Canonical:** https://apis.io/providers/omise/  
**Website:** https://www.omise.co  
**APIs profiled:** 1

Omise (now Opn Payments, part of Opn) is a Southeast Asian online payment gateway serving Thailand, Japan, and Singapore. Its REST API lets developers accept card payments and local methods - PromptPay, TrueMoney, internet and mobile banking, installments, and QR wallets - through Charges, Tokens, Sources, and Customers, plus Refunds, Disputes, Transfers, Recipients, Schedules, Links, and Events/webhooks. Card data is tokenized on a separate PCI-scoped vault host. The company rebranded from Omise to Opn in 2022; the API keeps the api.omise.co and vault.omise.co hosts.

## Kin Score — 36.8 / 100 (thin)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (-0.6 from 37.4).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 55.7 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 35.7 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Payments**: 18.8 (matched via tags).

## Agent readiness — 21.5 (agent-aware)

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

## Access

Paid · Self-serve signup — onboarding: self-serve, pricing: paid, trial: no (confidence: high).

## APIs (13)

- **Omise Account API** — Account profile and balance.
- **Omise Cards API** — Cards saved against a customer.
- **Omise Charges API** — Core payment object - authorize, capture, reverse, expire.
- **Omise Customers API** — Saved customers and their reusable cards.
- **Omise Disputes API** — Cardholder chargebacks and evidence.
- **Omise Events API** — Account events backing webhooks.
- **Omise Links API** — Shareable payment links.
- **Omise Recipients API** — Bank-account recipients that transfers pay out to.
- **Omise Refunds API** — Full or partial refunds against a charge.
- **Omise Schedules API** — Recurring charges and transfers.
- **Omise Sources API** — Non-card / local payment method sources.
- **Omise Tokens API** — Single-use card tokenization on the vault host.
- **Omise Transfers API** — Payouts from your balance to a recipient bank account.

## Agentic access (1)

- **Omise Agentic Access** — 52 operations · 25 acting

## Security (2)

- **Omise Authentication** — http · 2 schemes
- **Omise Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Omise Plans Pricing**

## Tags

Payments, Payment Gateway, Thailand, Southeast Asia, Charges, Tokens, Sources, PromptPay, Cards, Fintech

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