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Decide which enrichment result wins in a waterfall

Resolves provider disagreements in your enrichment waterfall with explicit arbitration logic: verification over popularity, recency over rank, and a hard ban on blended values. Each field gets one winner (or an honest NONE), a source, and confidence — turning 'which vendor do we trust' from a vibe into a rule.

The prompt
You are a data-arbitration function running inside an enrichment waterfall. Multiple providers have returned values for the same field on the same record — they disagree, overlap, or came back empty — and your job is to pick the single value most likely to be correct, with a stated confidence. You are conservative: a wrong 'verified' value poisons everything downstream, while an honest empty just triggers the next fallback.

You will be given: the field being resolved (for example email, employee count, industry, or phone), the candidate values with the provider each came from, and any verification metadata provided (validation status, last-seen dates, catch-all flags).

Arbitration rules:

- Verification beats source count: one SMTP-validated email outranks three unverified agreements.
- Recency beats seniority: a value with a recent last-seen date outranks an older one, when dates are provided.
- For emails: a validated non-catch-all wins; a catch-all pattern match is medium confidence at best; role addresses (info@, sales@) lose to any personal address.
- For numeric fields like employee count: values within 20% of each other corroborate — pick the most recent or middle value; wildly divergent values without metadata to break the tie mean low confidence.
- Formatting is not evidence. A neatly formatted wrong value is still wrong.
- Never average, blend, or invent a compromise value. The winner must be one of the provided candidates, verbatim.

OUTPUT CONTRACT — follow exactly:

Return a single JSON object:
{"winner": "<one candidate value verbatim, or NONE>", "source": "<the provider that supplied the winner, or empty string>", "confidence": "<high | medium | low>", "reason": "<under 15 words>"}

- Return ONLY the JSON. No markdown fences, no commentary.
- If no candidates are provided, or every candidate fails the rules above, return winner NONE with empty source and low confidence.
- NONE is a respectable answer. It routes the row to the next enrichment step; a guessed winner routes it to a bounce.

How to use it

  1. 1

    Copy the prompt into Claude, ChatGPT, or any LLM — or into a Clay AI column placed after your provider columns.

  2. 2

    In Clay, map the field name plus each provider's result column (and validation columns where you have them) as the candidate inputs.

  3. 3

    Test against 30 records where you know ground truth — tune the arbitration rules, not individual outputs, when it misjudges.

  4. 4

    Gate sends on confidence: high proceeds, medium gets a verification step, NONE and low trigger the next waterfall source.

Best practices

  • Log winner-by-source over time; if one provider wins under 10% of contests you're paying for a source the arbitration has already voted off the island.

  • Add your own domain knowledge to the rules — for example 'provider X overcounts employees at agencies' — instead of correcting rows by hand.

  • Never let a medium-confidence email into a high-volume send without validation; the rules rank candidates, they don't replace an SMTP check.

Example: what this looks like in practice

A RevOps lead runs three email providers in a Clay waterfall; they disagree on 18% of 7,000 contacts. This prompt arbitrates each contested row: validated personal addresses win, catch-alls drop to medium, and 340 rows return NONE where every candidate was a role address or failed validation. The NONE rows route to a fourth, more expensive provider instead of the sequencer. Bounce rate on the resulting send lands at 1.1%, down from 4.3% the previous quarter when 'first provider wins' was the rule — and the winner-by-source log shows one provider winning 6% of contests, funding its replacement.

Best fit

Roles
RevOpsSales Leader
Company size
Startup (1–10)SMB (11–50)Mid-market (51–500)Enterprise (500+)
Audience
B2B
Industries
Any industry
Works with
Any LLM
Difficulty
Advanced

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Prompt FAQ

Frequently asked questions

Waterfall enrichment queries multiple data providers in sequence to maximize coverage — but providers overlap and disagree, so coverage without arbitration means silently keeping whichever value arrived first. Decision logic makes the choice explicit: verification status, recency, and field-specific rules pick a winner, and honest failures route to the next source instead of your sequencer.