Endpoints live on MPP: mpp.sh/services

Locus

Sell your AI featuresby the call.

Locus Pro is the billing layer for agent platforms. Your users hold prepaid credits, and their agents spend them across 3352 API providers. Every call is metered at the price you set.

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Building an agent, not a platform? Pay With Locus →

Backed byBacked by Y CombinatorY Combinator
import { LocusCredits } from '@withlocus/credits'; const credits = new LocusCredits(process.env.LOCUS_CREDITS_SECRET_KEY); // lcr_... const res = await credits.callJson(  'tavily/search',  { query: 'agent-native billing' },  { user: 'user_123' },); res.data;         // raw Tavily JSON — drop-in with the provider SDK shaperes.cost.credits; // "117"  ← exact decimal string, charged at YOUR priceres.cost.balance; // "1883" ← exact decimal-string remaining balance

Real response headers: the meter rides on every call. Locus charges $0.09, your 30% markup takes it to 117 credits, and it lands on user_123.

Your margin

You buy at our price. You sell at yours.

Locus charges you a base price for every API call. You add a markup and charge your user the total. The difference is yours and never routes through Locus. Move the markup below to watch one real call reprice.

One search call, priced line by linetavily/search
What Locus charges you$0.0900
Your markup, at 30%+ $0.0270
What your user pays$0.1170

A bar split in two: $0.0900 is the base price Locus bills you and $0.0270 is the margin you keep, at a 30 percent markup.

Locus’s price$0.0900Your margin$0.0270
Drag to reprice the call

Sets your default markup, which any endpoint can override. The receipt, the bar and the monthly totals beside it all update as you move it.

What that adds up to

You keep $0.0270 every time this call runs. Over a month of them:

10,000 calls$270
100,000 calls$2,700
1,000,000 calls$27,000

Volumes are here for scale, not a forecast. What you keep per call is whatever markup you set, on every endpoint you enable.

Every call is a ledger row
Filterable by user, by API, or by the attribution metadata you stamp on the call.
Per-endpoint overrides
The slider sets your default. Any endpoint can carry its own markup, and the price previews before it goes live.
You keep the whole margin
The difference between our price and yours is collected by you. It never routes through Locus.
The catalog

3779 services. You pick the ones you sell.

15966 callable endpoints: 15539 fixed-price endpoints across 3352 providers, plus 427 live-quoted MPP and x402 endpoints. The catalog arrives switched off: you turn on what you want to resell, see the base price Locus charges you before you do, and set your markup on top.

Browse all endpoints →
AgentMail
Anthropic
Billboard
Brave Search
Browser Use
CoinGecko
Deepgram
DeepL
DeepSeek
Exa
Firecrawl
Google Gemini
Grok
Groq
Mistral AI
OpenAI
Perplexity
Replicate
ScreenshotOne
Stability AI
Suno
Tavily
VirusTotal
Wolfram|Alpha

24 of 3352 fixed-price providers · 15966 callable endpoints

  • Opt-in, endpoint by endpoint

    No endpoint charges usage until you switch it on. Enable a whole provider at once, or one endpoint at a time; where the two disagree, the endpoint setting wins.

  • Base prices before you commit

    Every endpoint lists what Locus charges you. Set a default markup, override it per endpoint, and preview the price your users will pay before it goes live.

  • One credential, every provider

    Your users never open a Tavily account or manage an OpenAI key. One Locus key reaches everything you have enabled, and the customer relationship stays yours.

How it works

Four steps, then it runs itself.

Credits allocate, burn and settle on their own, so one prepaid balance takes the place of the provider accounts and the invoicing you would otherwise run yourself.

01

Pick your catalog and prices

Enable APIs from the curated catalog with base prices visible. Set a default markup and per-endpoint overrides; effective prices preview instantly.

02

Your users hold credits

Fund your wholesale pool and allocate credits in your own denomination. Bill on your own Stripe at retail, or let users top up by card through the embedded widget.

03

Every call meters itself

Agents and apps burn credits at your price; the cost and remaining balance ride back in the response headers. An underfunded call returns 402 before anything happens.

04

Everything reconciles

Failed calls refund themselves, whichever way the call failed. Each burn is a ledger row you can filter by user, by API, or by the attribution metadata you set.

Locus Pro Use Cases

Four things platforms build with it.

Pick a use case to see the mechanics: usage-billed research tools, metered inference, priced MCP tools, or the embedded balance widget.

Explore Locus Pro →
The money flow
Your useruser_842pays your price
117 credits
▶
Your productacme-platformkeeps the margin
metered call
▶
Locustavily/searchburn + ledger row
base $0.09
▶
ProviderTavilywholesale
tavily/search · user_842−117burn
apollo/people/match · user_2c7−480502 burn
apollo/people/match · user_2c7+480refund

Every burn is a ledger row with the full price breakdown, filterable by user, API, and your own attribution metadata.

By the numbers

Built for scale, metered to the call.

Services on the catalog3,779

15966 callable endpoints: 15539 fixed-price endpoints across 3352 providers, plus 427 live-quoted MPP and x402 endpoints.

Metering now

tavily/search−117
groq/chat/completions−71
elevenlabs/text-to-speech−210
firecrawl/scrape−64
Before anything happens402

Never overdrawn

Burns are atomic against the balance. An underfunded call is refused before any money moves.

Of failed calls100%

Refund themselves

Upstream errors return the credits automatically, in every error branch, without a support ticket or a reconciliation run.

Charge per call, however many retries1

Idempotent by construction

Every burn requires an idempotency key; retries replay the original outcome instead of double-charging your users.

Pricing

The whole rate card.

Locus Pro is a single annual agreement, priced on your monthly provider spend. Every line of it is below.

Locus Pro · For enterpriseStarts with an 8-week paid pilot
$5,000/ month minimum

A 12-month production agreement. The monthly minimum is credited against each month’s usage; unused value expires monthly. No per-user or per-key fees.

Implementation pilot

An 8-week paid pilot validates the integration, economics, controls, and launch plan before production credentials are issued. Provider usage and payment-processing costs are separate.

$15,000

one-time

Platform fee

Marginal on monthly provider-cost basis: 5% of the first $100k, 4% of the next $400k, 3% above $500k. The monthly minimum is credited against it.

5% → 3%

marginal

Hosted endpoint prices

Existing hosted per-call WAPI prices do not change. Their embedded Locus component is disclosed and credited dollar-for-dollar, so it is never charged twice.

$0

change to per-call prices

Your markup

Set a default markup and per-endpoint overrides. The margin between our price and yours is collected by you and never routes through Locus.

100%

of the margin is yours

Talk to salesRead the docs

Already a customer? Sign in →

Pay With Locus · For developers

Pay per use. Nothing else.

There is no subscription and no minimum. Fund a wallet with USDC and pay the listed per-call price; every price is public.

$0/ month
Launch App →

Agents spend at machine frequency

A runaway loop can burn a month of margin before anyone opens a dashboard, so the limit has to hold before the call rather than surface on the invoice. Locus Pro checks the balance and the end user’s policy on every request, against a budget per user, a ceiling on any single charge and a cap on calls per loop, then returns 402 instead of spending past it.

Every burn lands as a ledger row stamped with your own attribution metadata, so you can trace what a run cost back to the user or the job that caused it.

Agents execute freely. The limits hold.

Vertical Tools

Agent-native tools built on Locus.

Build with Locus

Full-stack deployment, via API.

Spin up Railway apps, provision databases, and manage full deployments entirely through API calls. Your agent ships code without touching a dashboard.

  • Deploy from any git repo
  • Provision databases + services
  • Manage environments via API
  • Billed per operation to your wallet
Explore Build →
Checkout with Locus

Agent-native checkout.

A Stripe-style checkout SDK built for AI. Accept payments in your product and route funds directly into your own Locus wallet, wallet to wallet.

  • Drop-in SDK integration
  • Funds land in your Locus wallet
  • Spending controls apply automatically
  • One session for humans and agents
Explore Checkout →
Locus Founder

Your AI co-founder.

An AI co-founder that turns an idea into a running internet business over text — brand, storefront, ads, and customer email handled for you, powered by Locus payment infrastructure.

  • Idea to live business from a single chat
  • Website, ads, and customer email run for you
  • Anything customer-facing waits for your approval
  • Built and powered by Locus infrastructure
Meet Locus Founder →

These features are live now.

Build with Locus, Checkout with Locus, and the full API catalog are available in the app.

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FAQ

Frequently asked questions

Locus agent payment flow diagramLocus policy enforcement dashboard