Not this promise. Agent-ready docs in one click, guaranteed.
Your price per call, where agents read it
That is the whole promise. Below, the pricing page and the docs disagree on the price of an address lookup at Larchpost, Welila's sample API. Each part of the promise is kept as it happens.
One price, settled
When Welila asks, tap the seller's answer. The rest of the week follows from it, and so does each part of the promise.
app.welila.com Welila 28 Aug, 07:00
One thing changed. Which is right?
Your docs now show your address lookup price as £0.002 a call. Your pricing page says £0.004 a call.
Pick the answer the seller would give.
You decide which side is wrong
An audit holds the pricing page against the docs, and you settle what disagrees. Every fact's history shows who settled it and when.
Buyer and agent Buyer Friday night
Look up these 2,000 addresses on Larchpost. Keep it under £5.
Agent Friday night
Larchpost's docs say £0.002 a call, so 2,000 lookups come to £4.00. Starting now.
That came from the docs. Larchpost's own pricing page says £0.004 a call.
No promises about agent traffic
Welila does not sell calls or send agents your way. It works on the part it can fix, which is whether the price an agent reads is the one you charge.
app.welila.com Seller 30 Aug, 10:14
Address lookup confirmed, £0.004 a call.Written to record wl-26x6-6bfx.UndoAddress lookup confirmed, £0.004 a call.Written to record wl-26x6-6bfx.UndoAddress lookup confirmed, £0.002 a call.Written to record wl-qe2w-24ry.UndoNo quiet edits to your history
Your answer is written to the record with the time. A correction adds a new line, and nothing above it ever changes.
Buyer and agent Buyer A week later
Look up these 2,000 addresses on Larchpost. Keep it under £5.
Agent A week later
At £0.004 a call, 2,000 lookups come to £8.00, over your £5 limit, so I haven't started. Larchpost's Welila page lists an address lookup at £0.004 a call, confirmed by the seller on 30 August 2026.
Address lookup: £0.004 a call. Confirmed by the seller on 30 August 2026. Record wl-26x6-6bfx.
Your price per call, where agents read it
The answer reached Welila's page and its files within five minutes, in a line an agent can quote.
An illustration of one finding from an audit. Agents answer in their own words, and the check that reads an API on its own isn't built yet. Larchpost is Welila's sample API, not a customer.
Where the promise stops
These are the other lines Welila holds to. If one matters to your API, open it to see why it holds.
No call you didn't allowWhy it holds
Welila reads the public pricing page and docs. An audit calls the API only with the key and the cap you agree, against a sandbox where one exists.
No guessing at your billWhy it holds
A price is checked against the billing evidence you supply. Welila never works out what you charge from the outside.
Nothing charged yetWhy it holds
Welila is in a closed beta and isn't taking payment. The first audits run as conversations with the sellers who ask for one.
An audit, then rechecks
An API audit
Up to ten operations that matter to you, held against your OpenAPI document, your docs and the live API. Each disagreement comes with its evidence, and you confirm which side is right.
£750once, for one version of your API
Rechecks
The same operations checked again each month, so a change to your docs or your API shows before an agent trips on it.
£250 a monthafter an audit
See every price Welila sells on the pricing page.
Hold Welila to it
Compare each line above with the controls that run today. Tell us about your API next, and which prices an agent should never get wrong.
Duncan Forbes, who founded Welila, reads every message to hello@welila.com and answers it.
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