generated: '2026-08-29'
method: searched
source: >-
  api.nuget.org registration metadata, registry.npmjs.org, and
  https://www.telerik.com/fiddlercore
provider: Fiddler
providerId: fiddler
description: >-
  First-party distributable libraries and skill packages for the Fiddler family.
  Registries probed on 2026-08-29: NuGet (api.nuget.org / azuresearch-usnc),
  npm (registry.npmjs.org), plus the provider's own download and FiddlerCore
  pages. Fiddler ships desktop software rather than a hosted API, so there is no
  conventional REST client-SDK family — the embeddable proxy engine FiddlerCore
  is the closest thing to an SDK the provider sells.
registries_probed:
  - registry: nuget
    result: 2 first-party helper packages published by Progress
  - registry: npm
    result: >-
      No Progress/Telerik-published Fiddler package. `fiddler-everywhere`,
      `fiddler-everywhere-reporter` and `@telerik/fiddler` are all absent; the
      unscoped `fiddler` package (v0.0.1, 2014) is a third-party stub, not
      Progress.
  - registry: pypi
    result: not probed — no Python distribution is documented by the provider
  - registry: maven
    result: not probed — no JVM distribution is documented by the provider
packages:
  - name: FiddlerCore
    official: true
    kind: sdk
    language: .NET / .NET Standard
    registry: none
    distribution: licensed download from the provider
    url: https://www.telerik.com/fiddlercore
    docs: https://www.telerik.com/support/fiddlercore
    version: null
    published: null
    note: >-
      The embeddable Fiddler proxy engine for .NET applications. It is sold and
      delivered as a licensed download, NOT through a public package registry —
      there is no NuGet listing for the engine itself, so no registry metadata
      endpoint exists to read a version or release date from. version/published
      are null because they were checked and nothing publishable was found, not
      because they were skipped.
  - name: FiddlerCore5.NetworkConnections
    official: true
    kind: library
    language: .NET
    registry: nuget
    url: https://www.nuget.org/packages/FiddlerCore5.NetworkConnections
    project_url: https://www.telerik.com/fiddler/fiddlercore
    authors: Progress
    version: 0.2.0
    published: '2023-03-14'
    description: >-
      Extensible solution for managing the proxy settings of network connections.
    note: >-
      First-party (authors "Progress", projectUrl telerik.com/fiddler/fiddlercore).
      DECAY SIGNAL: last published 2023-03-14 — over three years before this
      pass, and still at 0.2.0, while Fiddler Everywhere shipped 8.0.2 in July
      2026. The FiddlerCore satellite packages are not being maintained on the
      cadence of the flagship product.
  - name: BCMakeCert
    official: true
    kind: library
    language: .NET
    registry: nuget
    url: https://www.nuget.org/packages/BCMakeCert
    project_url: https://www.telerik.com/fiddler/fiddlercore
    authors: Progress
    version: 2.0.9
    published: '2023-03-14'
    description: >-
      Cryptography implementations based on the BouncyCastle C# API, used by the
      BCCertMaker certificate provider for FiddlerCore.
    note: >-
      First-party FiddlerCore dependency. Same 2023-03-14 publish date and same
      decay signal as FiddlerCore5.NetworkConnections.
  - name: fiddler-agent-tools
    official: true
    kind: agent-skills
    registry: github
    url: https://github.com/telerik/fiddler-agent-tools
    install: npx skills add telerik/fiddler-agent-tools/skills
    version: null
    published: '2026-08-03'
    published_field: last push to the default branch (master)
    note: >-
      Official Fiddler Everywhere Agent Skills, distributed from a Git repository
      rather than a package registry — there is no tag, release or registry
      metadata endpoint, so version is null. The `published` date is the
      repository's last push, which is the only dated signal available. The
      skills themselves are saved in skills/ and indexed in skills/_index.yml.
package_count: 4
official_package_count: 4
sdk_note: >-
  There is no HTTP client SDK because there is no hosted HTTP API. The agent
  integration path is the MCP server (mcp/fiddler-mcp.yml) plus the skills above,
  and the embedding path is FiddlerCore.