# Estamp

**Canonical:** https://apis.io/providers/estamp/  
**APIs profiled:** 0

E-Stamp Corporation (eStamp) was a dot-com era Internet-postage company, a Canaan Partners seed-stage portfolio company that competed with Stamps.com to let users buy and print official U.S. Postal Service postage online. The company is defunct: on April 30, 2001 Stamps.com acquired E-Stamp's name, 31 Internet-postage patents, and the estamp.com domain, which today 301-redirects to stamps.com. There is no live company, product, developer portal, or API surface to enrich; this profile is retained as a historical portfolio-lead record.

## Kin Score — 5.0 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 5.0).

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

## 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).

## Tags

Company, Internet Postage, Postage, Shipping, E-Commerce, Defunct, Dot-Com Era, Acquired

---

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