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Cybersecurity · head to head

Endor Labs vs Sigstore

Endor Labs logo

Endor Labs

Cybersecurity

Security and AI agent governance for code and supply chain

From
Free
Rated
-
Full reviewWebsite
Sigstore logo

Sigstore

Cybersecurity

Free public signing and transparency infrastructure for open source artifacts

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Endor Labs pricing requires contacting sales, no transparent rates; Sigstore the security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • They diverge on capability: Endor Labs covers AI coding agent governance, Sigstore covers Fulcio.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Endor Labs and Sigstore actually diverge.

Attributes where Endor Labs and Sigstore differ
AttributeEndor LabsSigstore
Pricing modelSeat-based per contributing developer with volume discountsOpen source, public instance free to use
PlatformsWeb, CLI, IDEWeb, Linux, macOS, Windows, Self-hosted
Founded2021Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Endor Labs

  • AI coding agent governance
  • SAST scanning
  • Secrets detection
  • Reachability analysis
  • Open source dependency scanning
  • Package firewall
  • MCP server integration

Only in Sigstore

  • Fulcio
  • Rekor
  • Keyless signing
  • Multi-language clients
  • Timestamp authority
  • Neutral governance

What people use each for

The jobs each tool is most often brought in to do.

Endor Labs

  • Securing AI coding agent outputs before deploymentnot Sigstore
  • Reducing SAST false positives with reachability analysisnot Sigstore
  • Managing open source supply chain risknot Sigstore
  • Enforcing security policies in CI/CD pipelinesnot Sigstore

Sigstore

  • Open source projects signing releases without running a certificate authoritynot Endor Labs
  • Organisations meeting a signed-artifact requirement without buying a signing productnot Endor Labs
  • Publishing provenance that a consumer can verify independently of younot Endor Labs
  • Self-hosting the same components where a public log is unacceptablenot Endor Labs

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Endor Labs

  • Pricing requires contacting sales, no transparent rates
  • Developer tier lacks UI and historical scan data
  • Free tier limited to local scanning only
  • Seat-based model may become expensive for large teams

Sigstore

  • The security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • It is a 99.5 percent objective with no service level agreement, which permits several hours of downtime a month and offers no remedy. A pipeline that signs on every build has taken a hard dependency on a free service with no contract behind it.
  • Log scale is a live engineering problem rather than a theoretical one. The active shard holds billions of entries, the log has already been sharded twice, and sharding version 1 requires stopping traffic, which is why a replacement was built.
  • Ten-minute certificates make trust depend on log availability. Verifying an older signature relies on the log entry proving it was made inside that window, so a lost or unreachable entry can render a valid artifact unverifiable.
  • Migration debt is substantial and ongoing. Version 2 of the log is generally available but not the public default, the signing client has an announced breaking release ahead, some official clients lag the new log format, and a post-quantum migration is named as the next break after that.

Pricing, plan by plan

Endor Labs

Free
  • DeveloperFree
    • Local scanning
    • Read-only vulnerability data
    • No UI, policies, or scan history

Sigstore

Free
  • Public good instanceFree
    • Free to everyone with no contract
    • 99.5 percent availability objective, not an agreement
    • 100KB cap per attestation upload
  • Self-hostedFree
    • Apache-2.0
    • Run your own Fulcio and Rekor
    • Rekor v2 available for self-hosters

Which should you pick?

Choose Endor Labs if

  • You need ai coding agent governance.
  • You want to start without paying.
  • You work on Web, CLI, IDE.
  • You also want sast scanning.
Endor Labs review

Choose Sigstore if

  • You need fulcio.
  • You want to start without paying.
  • You work on Web, Linux, macOS, Windows, Self-hosted.
  • You also want rekor.
Sigstore review

Questions people ask

Is Endor Labs or Sigstore better?
Neither clearly leads. Endor Labs starts at Free and Sigstore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Endor Labs or Sigstore?
Endor Labs starts at Free and Sigstore at Free.
Does Endor Labs or Sigstore run on more platforms?
Endor Labs runs on Web, CLI, IDE. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
Can I use Endor Labs for free?
Both have a free tier, so you can try either at no cost before committing.
What is Endor Labs best used for?
Endor Labs is most often used for securing ai coding agent outputs before deployment, reducing sast false positives with reachability analysis, managing open source supply chain risk, enforcing security policies in ci/cd pipelines. Of those, securing ai coding agent outputs before deployment and reducing sast false positives with reachability analysis are not what Sigstore is typically brought in for.
What can Endor Labs do that Sigstore cannot?
Endor Labs covers AI coding agent governance, SAST scanning, Secrets detection, Reachability analysis. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

Endor Labs: What is the difference between Endor Labs Developer and paid tiers?

Developer tier is free and provides local scanning via MCP server with read-only vulnerability access and no UI. Paid tiers (Core and Pro) add team features like policy enforcement, enterprise integrations, reporting, and scan history.

Source
Sigstore: Is the public instance really free?

Yes, with no contract and no paid tier. That is also the weakness: a 99.5 percent objective with no agreement, no remedy and support through Slack.

Endor Labs: How does Endor Labs define seats for pricing?

Seats are calculated per contributing developer (those with commits in monitored repositories within the last 90 days). Volume discounts apply as team size grows.

Source
Sigstore: Has the public log moved to Rekor v2?

No. Version 2 reached general availability in October 2025 and self-hosters can use it, but the public instance still defaults to version 1 and the project has said it will for the foreseeable future.

Endor Labs: Does Endor Labs support on-premises deployment?

The platform is cloud-based SaaS by default. Enterprise customers should contact sales to discuss custom deployment options.

Source
Sigstore: Does Sigstore make my dependencies safe?

No, and this is a category error worth avoiding. It tells you who published something. It has no knowledge of what the artifact contains or whether it is vulnerable.

Sigstore: What are the rate limits?

Not published. Only the 100KB cap per attestation upload is documented, so do not design a high-volume pipeline around assumed throughput.

Sigstore: Should we self-host it?

If a public record of every signature is unacceptable, or if a free service with no agreement cannot sit in your build path, then yes. Otherwise the public instance is what most projects use.

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