# Ressl

**Canonical:** https://apis.io/providers/ressl-ai/  
**Website:** https://simulation.ressl.ai  
**APIs profiled:** 2

Ressl (ressl.ai) is a Y Combinator-backed platform that provisions hosted mock SaaS APIs for AI agents and evaluations. Its control-plane API lets you list the mock providers your organization is granted (for example jira, salesforce, slack, plus UI clones of Gmail Business and LinkedIn) and create a short-lived snapshot of one provider that returns a public HTTPS base URL your agent can call - no real customer tenant required. Snapshots carry deterministic or seeded synthetic data and expire on a TTL (default one hour, up to seven days). Control traffic runs on simulation.ressl.ai; provisioned mock traffic is served from *.mock.ressl.cc. Ressl helps teams train, benchmark, and deploy autonomous agents by giving them realistic SaaS surfaces to act against safely.

## Kin Score — 40.3 / 100 (developing)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 40.3).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 61.5 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 61.9 |
| Commercial Clarity | 13.2 |
| Access Clarity | 13.2 |

## Agent readiness — 41.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | verified |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | yes |
| 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 (2)

- **Ressl Providers API** — Discover mock SaaS providers granted to your organization
- **Ressl Snapshots API** — Provision short-lived hosted mock SaaS APIs

## MCP servers (1)

- **Ressl MCP Server**

## Security (2)

- **Ressl Ai Authentication** — apiKey/http · 2 schemes
- **Ressl Ai Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Mock APIs, API Testing, AI Agents, Agent Evaluation, Sandbox, Developer Tools, Synthetic Data, Software-as-a-Service

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