# Ithaca

**Canonical:** https://apis.io/providers/ithaca/  
**Website:** https://www.ithaca.xyz  
**APIs profiled:** 0

Ithaca is a crypto-infrastructure company (backed by Paradigm) building open-source developer tooling to accelerate the crypto frontier. Its flagship product, Porto, is a TypeScript SDK for passwordless authentication and payments on the web — letting applications and wallets create, manage, and interact with next-generation Ethereum accounts (keychains with passkeys, permissions, subscriptions, and native cross-chain interoperability) without passwords, extensions, seed phrases, or API keys. The stack also includes the Account smart contracts (Solidity), the Relay cross-chain transaction router and RPC server (Rust) for EIP-7702 accounts, and Odyssey, an experimental open-source Layer 2 testnet. The Ithaca team has since joined Tempo (tempo.xyz), and the Porto product is sunsetting on 2026-07-24 with users moving to porto.sh.

## Kin Score — 15.5 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 15.5).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 28.9 |
| Developer Ergonomics | 40.5 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

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

## 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).

## Security (2)

- **Ithaca Domain Security** — TLSv1.3 · HSTS
- **Ithaca Vulnerability Disclosure** — contact published

## Tags

Company, Crypto Infrastructure, Ethereum, Authentication, Payments, Account Abstraction, Smart Contracts, Web3, SDK, Cross-Chain

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