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chefcohen/corroborate-mcp (corroborate-mcp)

corroborate-mcp · v0.1.0 · scanned

What changed in the harness

Selection accuracy 100→100, token cost up 3%, unconfirmed writes 100%→100%.

Category breakdown

Where the score comes from.

Earned points across the four signals Gradable measures. Safety and Legibility are scored out of 30; Economics and Discoverability are scored out of 20.

01Safety

30.0 / 30

30.0 out of 30
02Legibility

29.8 / 30

29.8 out of 30
03Economics

20.0 / 20

20.0 out of 20
04Discoverability

17.9 / 20

17.9 out of 20

Highest-impact fix

Estimated gain +2 points

Make target tools discoverable on the first call

Clarify tool names, decision boundaries, and required argument schemas so an agent can choose and construct the target call without exploratory steps.

Description evidence

Defects and rewrites.

1 defect found across the exposed tool descriptions. Suggested rewrites make purpose, inputs, boundaries, and returns easier for an agent to understand.

Tool Defect types Suggested rewrite
find_sources
params_unexplained
Multi-engine news/source search (Google News, GDELT, Hacker News) for a query: returns a deduped list of {outlet, domain, url, date}. Use when you want raw coverage to judge yourself, not a scored verdict — the cheaper primitive under corroborate_claim. query is the search query or claim to find sources for; window_days limits the lookback window in days; max_sources caps how many evidence sources are returned. Keyless, read-only.

Selection evidence

Confusable tool pairs.

0 pairs where similar names or overlapping descriptions may send an agent toward the wrong tool.

Tool A Tool B Confidence Why they collide
No confusable tool pairs were flagged in this assessment.

Compare the field

One score is useful.
The evidence makes it actionable.

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