# FIXSIM

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

FIXSIM provides a FIX Protocol testing platform offering sandbox environments, certification tools, and live FIX message simulation. It enables OMS/EMS vendors and broker‑dealers to validate session logic, replay messages, and automate regression testing without installations or sales calls. The service includes free trials, pricing details, tutorials, and extensive resources for FIX protocol developers.

## Kin Score — 44.2 / 100 (developing)

Scored 2026-11-13 under rubric 0.28.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 51.5 |
| Contract Governance | 22.0 |
| Operational Transparency | 14.3 |
| Developer Ergonomics | 47.6 |
| Access Clarity | 51.1 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 18.6 (matched via fallback).

## Agent readiness — 19.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | derived |
| 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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | no |
| Operation Distinctiveness | distinct |
| MCP Tool Quality | na |

## Access

Paid — onboarding: unknown, pricing: paid, trial: no (confidence: high).

## APIs (10)

- **FIXSIM Executions In API** — The ExecutionsIn API from FIXSIM — 4 operation(s) for executionsin.
- **FIXSIM Executions Out API** — The ExecutionsOut API from FIXSIM — 5 operation(s) for executionsout.
- **FIXSIM Instances API** — The Instances API from FIXSIM — 1 operation(s) for instances.
- **FIXSIM Orders In API** — The OrdersIn API from FIXSIM — 5 operation(s) for ordersin.
- **FIXSIM Orders Out API** — The OrdersOut API from FIXSIM — 6 operation(s) for ordersout.
- **FIXSIM Raw Messages API** — The RawMessages API from FIXSIM — 1 operation(s) for rawmessages.
- **FIXSIM Securities API** — The Securities API from FIXSIM — 1 operation(s) for securities.
- **FIXSIM Sessions API** — The Sessions API from FIXSIM — 3 operation(s) for sessions.
- **FIXSIM Session Settings API** — The SessionSettings API from FIXSIM — 1 operation(s) for sessionsettings.
- **FIXSIM SSO API** — The Sso API from FIXSIM — 4 operation(s) for sso.

## Agentic access (1)

- **FIXSIM Agentic Access** — 84 operations · 40 acting

## Security (2)

- **FIXSIM Authentication** — apiKey · 1 scheme
- **FIXSIM Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **FIXSIM Plans Pricing**

## Tags

FIX, FIX Protocol, Testing, Sandbox, Financial Services

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