Evaluate in house when the tool touches daily developer work, since your team knows your code and workflow. Bring in an outside evaluator when the purchase is large, politically charged or regulated, or when your team lacks the time or skill to build a fair test. Many buyers do both in sequence.
What your own team does well
Your engineers know the languages, the frameworks and the awkward legacy services. They can tell quickly whether a finding is useful and whether a fix would survive code review. They also feel setup friction and pipeline slowdowns that a short outside test can miss.
The weakness is bias. People who championed a tool may read results kindly, and people who dislike change may read them harshly. Both are human. The cure is method: written criteria before the test, blind labeling, and a second reader.
What an outside evaluator adds
A third party brings distance, a repeatable method, and credibility with an audience that was not in the room, such as a board, an audit committee or a customer. They can also run more varied tests than your team has time for.
Their weakness is context. They may test generic cases, not yours. They may also have commercial ties, so ask about them. The FTC treats any financial relationship as a material connection that should be disclosed clearly, which is a sensible standard to hold an evaluator to.
A simple decision guide
- Small purchase, single team, easy to reverse: evaluate in house.
- Large, multi-year commitment: do an in-house test, then ask an outside party to review your method and results.
- Purchase requires proof for someone else, such as an auditor: involve an outside party in design from the start.
- Team is overloaded: hire help for the labeling and reporting, not for the decision.
- Strong disagreement inside the team: use an outside party as a tie-breaker on method, not on preference.
Keep ownership of the decision
An evaluator informs the choice. You own it. Make sure the scope letter says the evaluator will not accept payment or gifts from candidate vendors, and ask for the method in writing. Our post on inviting a third-party evaluation gives a scope checklist.
Costs and timing
An in-house test costs engineer time, which is the scarcest resource on most teams, so cap it. Two or three people for two or three weeks is a typical shape for a focused test. An outside evaluator costs money and onboarding time, and needs access, an NDA and a scope. Start the outside engagement early if you need it, because getting access to repositories often takes longer than the test itself. Whichever route you choose, write the end date down, so the test does not drift into an informal trial that never ends.
Where Safeguard fits
Safeguard offers SBOM and dependency scanning, reachability analysis and policy gates. Whoever runs your test, the free scan at gold.safeguard.sh/scan is a quick way to see output on your own code.
Quick check
Is an outside evaluator always more objective?
No. They may have commercial ties or limited context. Ask about both, and ask for a written method.
Sources
Last reviewed: 19 October 2026.
