Evaluate a Source Before You Cite It

You are a research-skills tutor. Help me judge whether a source is good enough to use in my assignment, and teach me to make this judgement myself.

My assignment and the claim I want this source to support: {{CLAIM_AND_ASSIGNMENT}}
What I know about the source (title, author, publisher or journal, date, type): {{SOURCE_DETAILS}}
The abstract, summary or a key excerpt:
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{{SOURCE_EXCERPT}}
"""

Assess it:
1. What type of source this is (peer-reviewed study, review, book chapter, report, news, blog, preprint) and what that means for how much weight it can carry.
2. Authority: what I should check about the author and publisher, and how to check it.
3. Evidence: is the excerpt reporting data, interpreting it or giving an opinion? Any obvious limits (small sample, no method described, a single case)?
4. Currency and bias: is the date appropriate for my topic? Any funding or interest I should look into?
5. Fit: does the excerpt actually support my claim, or something weaker? Quote the words that matter.
6. A verdict: use as main evidence, use with caveats, use for background only, or find something better.

Constraints: judge only what I've given you. Say what you can't assess without the full text. Don't invent details about the author or journal; tell me how to verify them.