# Antithesis

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

Antithesis is an autonomous software testing platform that finds deep bugs in mission-critical systems using deterministic simulation and continuous fuzzing. It runs your entire system inside a deterministic hypervisor, injects faults and network partitions, explores reachable states, and reproduces any bug perfectly for time-travel "multiverse" debugging and automated root-cause analysis. Teams integrate through language SDKs (Go, Java, C/C++, Python, JavaScript, Rust, .NET) that define always/sometimes properties and assertions, package their software with Docker Compose or Kubernetes, then launch tests through a webhook/REST API or the snouty CLI. It is used to harden databases, distributed systems, blockchains, and financial trading infrastructure.

## Kin Score — 32.3 / 100 (thin)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (+0.0 from 32.3).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 0.0 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 78.6 |
| Commercial Clarity | 35.5 |
| Access Clarity | 35.5 |

## Agent readiness — 10.4 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

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

## APIs (1)

- **Antithesis Platform API (Webhooks)** — Programmatic access to the Antithesis autonomous testing platform via tenant-scoped webhook endpoints. POST /basic_test launches a test run; POST /debugging starts a multiverse ...

## Security (2)

- **Antithesis Authentication** — http/openIdConnect · 4 schemes
- **Antithesis Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Company, Developer Tools, Testing, Software Testing, Deterministic Simulation, Fuzzing, Reliability, Distributed Systems, SDK

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