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fidelius

Stores API keys for projects in the macOS keychain and injects them into commands run by AI agents, so no .env file is needed.

Actively maintained

Developer toolsSecurityFor developers
blisslabs.dev ↗Launched on Product Hunt · Oct 15, 2026
Open blisslabs.devAlternativesSet it up for my teamIs fidelius yours? Claim the card →
At a glanceswept Oct 15, 2026

≈ 5visits/mo

Emerging · estimate, read Oct 15, 2026

For
Mac developers running AI agents who need API keys kept out of .env files
Activity
Actively maintainedsite updated 2 weeks ago
Runs as
Desktop app
Used for
  • Replace plaintext .env files with keychain-stored API keys
  • Group API keys by project in the macOS keychain
  • Run AI agent commands with secrets injected at runtime
Worth knowingcomputed from what we read · each with its source
  • Publishes llms.txt, a file written for AI assistantsblisslabs.dev ↗
  • Launched on Product Hunt on Oct 15, 2026Product Hunt ↗
Alternatives in Developer toolsby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Questions this page answers
  • What is fidelius?

    Stores API keys for projects in the macOS keychain and injects them into commands run by AI agents, so no .env file is needed. It is listed in the Atlas under Developer tools.

  • Who is fidelius for?

    Mac developers running AI agents who need API keys kept out of .env files

  • Do people use fidelius?

    Emerging: ≈ 5 visits/mo · estimate, 2026-10.

  • Is fidelius still maintained?

    Actively maintained: site updated 2 weeks ago.

  • What are alternatives to fidelius?

    In Developer tools, by use: Postman, Warp, Reflect AI, PostHog, Cosmic, SurrealDB.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

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