# Mainframe

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

Mainframe (Mainframe Group, Inc.) is a software development and marketing services company building products for the decentralized finance (DeFi) ecosystem. It offers three service areas — Risk Management (protocol parameter optimization and stability), Development (DeFi and blockchain financial solutions), and Marketing (brand reach and audience engagement) — and has produced projects including Hifi, Pooled NFT, Sheet Heads, and Crown Ribbon. It was surfaced as a portfolio company of a16z and Techstars and added to the API Evangelist network. Mainframe itself publishes only a three-page Webflow marketing site, with no API host and no developer portal (api., docs. and developer.mainframe.co do not resolve), and its MainframeHQ GitHub organization has zero public repositories. Its developer surface lives under its Hifi product instead — the docs.hifi.finance protocol documentation (footer copyright "Mainframe Group Inc."), the github.com/hifi-finance organization, five first-party npm packages in the @hifi scope, and a GraphQL subgraph schema for the Hifi lending protocol. That surface is a smart-contract SDK rather than an HTTP API — there is no REST API and no OpenAPI anywhere — and it has gone quiet, with the newest package release dated 2024-01-12 and the documented GraphQL endpoint on The Graph's retired hosted service returning HTTP 404.

## Kin Score — 21.8 / 100 (emerging)

Scored 2026-08-19 under rubric 0.12.0. Trend: flat (-1.1 from 22.9).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 37.8 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 21.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| 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 |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (1)

- **Hifi Protocol Subgraph** — The Graph subgraph that indexes the Hifi fixed-rate, fixed-term lending protocol — vaults, collateral and debt positions, listed bonds and collaterals, AMM pools and swaps — and...

## Security (1)

- **Mainframe Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Mainframe Plans Pricing**

## Tags

Company, DeFi, Blockchain, Web3, NFT, Software Development, Marketing, Lending, GraphQL, Smart Contracts, Subgraph, Ethereum

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