# EngFlow

**Canonical:** https://apis.io/providers/engflow/  
**Website:** https://www.engflow.com  
**APIs profiled:** 1

EngFlow provides remote build execution, remote caching, CI runners, and a Build & Test UI that accelerate large-scale software builds for Bazel, BuildStream, Goma, Pants, Soong, CMake, and Buck2. EngFlow clusters expose a gRPC / Protocol Buffers API surface — the open Remote Execution API (REAPI v2) and Remote Asset API, plus EngFlow's own cluster, IAM, authentication, event store, result store, secret, notification, and resource-usage services, all published as Protocol Buffer interface definitions in the EngFlow/engflowapis repository. Clusters authenticate via mTLS, cluster-issued JWT bearer tokens, OIDC federation, SAML, GitHub tokens, and basic auth, and provision users over SCIM 2.0. EngFlow was founded by former Google/Bazel engineers and is backed by a16z.

## Kin Score — 44.4 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 44.4).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 28.2 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 18.4 |
| Developer Ergonomics | 73.2 |
| Commercial Clarity | 52.6 |
| Access Clarity | 52.6 |

## Agent readiness — 25.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| 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 (1)

- **EngFlow Cluster API (gRPC)** — The EngFlow cluster gRPC / Protocol Buffers API surface — cluster info, IAM (roles/policies/users/groups), authentication, event store and result store build-event streaming, se...

## MCP servers (1)

- **EngFlow MCP Server**

## Security (2)

- **Engflow Authentication** — mutualTLS/http-bearer/oauth2/openIdConnect/saml/http-basic/scim · 7 schemes
- **Engflow Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Remote Execution, Remote Caching, Build Systems, Bazel, CI/CD, Developer Tools, gRPC, Protocol Buffers, DevOps, Continuous Integration

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