# Fiddler

**Canonical:** https://apis.io/providers/fiddler/  
**Website:** https://www.telerik.com/fiddler  
**APIs profiled:** 3

Fiddler by Telerik (Progress Software) is a suite of HTTP debugging proxy tools for capturing, inspecting, modifying, and replaying HTTP and HTTPS traffic between computers. The product family includes Fiddler Everywhere (cross-platform), Fiddler Classic (Windows), and Fiddler Jam (browser-based collaboration tool) for API debugging, performance testing, and web development workflows.

## Kin Score — 17.8 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 17.8).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 32.9 |
| Access Clarity | 32.9 |

## Agent readiness — 3.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (3)

- **Fiddler Everywhere** — Fiddler Everywhere is a cross-platform web debugging proxy for macOS, Windows, and Linux. It captures HTTP and HTTPS traffic, provides API composition capabilities, and includes...
- **Fiddler Classic** — Fiddler Classic is the original free Windows-based HTTP debugging proxy for logging all HTTP and HTTPS traffic between a computer and the Internet. It supports traffic inspectio...
- **Fiddler Jam** — Fiddler Jam is a browser-based troubleshooting solution that enables non-technical users to capture HTTP traffic logs and share them with development teams for collaborative deb...

## Security (2)

- **Fiddler Domain Security** — TLSv1.3 · HSTS · DMARC
- **Fiddler Vulnerability Disclosure** — Bugcrowd · security.txt · contact published

## Plans (1)

- **Fiddler Plans Pricing**

## Tags

API Debugging, HTTP Debugging, HTTP Proxy, Performance Testing, Traffic Inspection, Web Development

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