# Stamped

**Canonical:** https://apis.io/providers/stamped/  
**Website:** https://stamped.io  
**APIs profiled:** 5

Stamped is a reviews, ratings, and loyalty platform for e-commerce brands on Shopify, BigCommerce, and custom/headless platforms. Its V3 API is organized into three domains: Merchant Data (customers, products, orders), Loyalty Operations (points adjustments, VIP tiers, reward redemption, activities, and program reporting), and Reviews. Authentication is a shop-scoped Private API Key sent in the stamped-api-key header. Surfaced as a portfolio company of GV and enriched by the API Evangelist pipeline from Stamped's public developer documentation at developers.stamped.io.

## Kin Score — 34.2 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 34.2).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 53.4 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 48.2 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 36.0 (agent-ready)

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

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (5)

- **Stamped Customer Actions API** — The Customer Actions API from Stamped — 6 operation(s) for customer actions.
- **Stamped Customers API** — The Customers API from Stamped — 3 operation(s) for customers.
- **Stamped Orders API** — The Orders API from Stamped — 3 operation(s) for orders.
- **Stamped Products API** — The Products API from Stamped — 3 operation(s) for products.
- **Stamped Program Reporting API** — The Program Reporting API from Stamped — 2 operation(s) for program reporting.

## MCP servers (1)

- **Stamped MCP Server**

## Agentic access (1)

- **Stamped Agentic Access** — 26 operations · 15 acting

## Security (2)

- **Stamped Authentication** — apiKey · 1 scheme
- **Stamped Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Consumer, Reviews, Ratings, Loyalty, E-Commerce, Customer Marketing, Shopify

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