# onlinecompiler-io

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

OnlineCompiler.io provides a Code Execution API that allows developers to run and judge code in 46 programming languages via a simple HTTP interface. The service offers a free tier with up to 100,000 runs per month and commercial plans, supports sandboxed execution, and includes features like test case evaluation, language selection, and result metrics. It targets developers building online judges, coding education platforms, assessments, and AI agents.

## Kin Score — 68.0 / 100 (exemplar)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 65.5 |
| Contract Governance | 79.1 |
| Operational Transparency | 46.8 |
| Developer Ergonomics | 51.7 |
| Access Clarity | 88.9 |

Regulatory layer — **Education & Research**: 27.3 (matched via tags).

## Agent readiness — 60.4 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | unknown |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | unknown |
| Agent Skills | unknown |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | distinct |

## APIs (5)

- **Code Execution API** — Run and judge code in 46 languages via HTTP endpoints. Supports sync and async execution, test cases, and language selection.
- **onlinecompiler-io Account API** — Usage and stored files of the calling key's account.
- **onlinecompiler-io Judge API** — Run one program against many tests and score it.
- **onlinecompiler-io Reference API** — Compilers, limits and health. No API key needed.
- **onlinecompiler-io Run API** — Run one program.

## Agentic access (1)

- **Onlinecompiler Io Agentic Access** — 8 operations · 3 acting

## Security (3)

- **Onlinecompiler Io Authentication** — 1 scheme
- **Onlinecompiler Io Domain Security** — TLSv1.3 · DMARC
- **Onlinecompiler Io Trust Center** — SOC 2, ISO 27001

## Plans (1)

- **Onlinecompiler Io Plans Pricing**

## Tags

Company, CodeExecution, API, DeveloperTools, Education, AI

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