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xAPI
The vision

The tool layer for
every AI agent.

We give AI agents one key to discover, pay for, and use any API in the world — starting with a live marketplace of 500+ APIs, billed per call.

10M+ requests served 1,700 users Live in production
EASY Residency 2026 · Demo Day
The problem

Agents have a brain. Getting them hands is manual, slow, and priced wrong.

Fragmentation

Hundreds of platforms

Search, social, on-chain data — every capability lives behind its own portal, its own docs, its own key.

Manual bottleneck

A human does the signup

Someone registers, verifies, and pastes keys site by site. The agent can't onboard itself.

Cost mismatch

Monthly plans, one call

Subscriptions priced for human teams. An agent needing one call pays for a whole month — or goes without.

An agent that needs 20 tools needs 20 accounts, 20 keys, and 20 subscriptions — hours of human work, mostly wasted. So agents ship with a frozen toolset, and tool-use stays the bottleneck of agentic AI.

The solution

One key. One meter.
Zero setup.

xAPI is a marketplace and a metered gateway in one. The agent searches a catalog, reads a typed schema, calls the endpoint — and the gateway meters and settles that single call.

  • →No signup, ever. One key reaches every API in the catalog.
  • →Per-call billing. Fiat via Stripe, or crypto via x402 — an agent pays with its own wallet.
  • →Every surface. CLI · MCP · Agent Skills · Web console.
# discover → inspect → call
$ npx xapi-to search "token price"
$ npx xapi-to get crypto.token.price
$ npx xapi-to call crypto.token.price \
  --input '{"symbol":"BTC"}'
# one key bills the whole call
hours of human setup
Zero
Time for an agent to reach a new tool.
$20–200 / month / tool
Per call
What that capability actually costs to use.
frozen at build time
Runtime
When an agent picks up a new capability.
Live demo

One sentence in.
Three APIs called.

No signup, no keys, no setup — the agent finds the tools it needs and pays for each call as it goes.

  • 01Plain language, straight into Claude Code
  • 02The agent picks its own tools from the catalog
  • 03X → LinkedIn — chained across APIs, billed per call
  • 04Full answer in 24 seconds
The unfair edge

Agents don't just buy tools — they ship them.

Every marketplace dies on supply cost. Ours is zero marginal cost: one install, and any coding agent onboards an API by itself — no forms, no BD calls, no admin approving anything.

01

Install the skill

npx skills add xapi-labs/xapi-provider

→
02

Point at your API

The agent writes the OpenAPI spec, auth, and per-call pricing for you.

→
03

AI auto-review

Sandbox-tested and promoted automatically — no human in the loop.

→
04

Live & earning

80% of every call, withdrawn as USDC on BNB Chain / Base.

PER_CALL · PER_TOKEN · PER_RESOURCE Scoped keys — every permission opt-in Versioning & rollback via API
Traction

Not a prototype — live in production.

10M+
requests served through the gateway
500+
APIs live in the catalog
1,700
users
3.4×
user growth since June
500 → 1,000 → 1,700
Business customers
MEXCMEXC
42 Space42 Space
HertzFlowHertzFlow
Shipped & running

Surfaces

Platform · MCP · CLI · Skill

Payments

x402 + Stripe, both live

Gateways

Data APIs + AI models

Provider economy

Earnings + USDC payout

Business model

We take 20% of every call — and supply grows itself.

20%
Platform take on every call. Providers keep 80%.
5%
Referral rebate — a built-in viral loop.
2 rails
x402 (USDC) + Stripe (fiat).
$0
Our cost to onboard a new API. The agent does it.
The flywheel

Agents self-onboard APIs

At zero cost to us.

→

A deeper catalog

Attracts more agents.

→

More calls

Make listing more lucrative.

→

More providers

And the loop turns again.

Every turn is usage revenue. North star: weekly active keys × calls per key.

Competition

The agentic RapidAPI — pay-as-you-go, and open.

Direct integrationRapidAPIOpenRouterxAPI
Discovery✗ manual researchhuman marketplacemodel catalog✓ runtime search + schema
Access✗ an account per APIone account, human plansone key, models only✓ one key or agent wallet
Billingper-provider contracts✗ subscriptionspay-as-you-go✓ per call — fiat or x402
Scopeany API — you build itany APIAI models onlyany API + AI models
Who can supplyn/acuratedcurated✓ anyone — even agents

Direct integration is still the default — and it's why agents ship with a frozen toolset. RapidAPI proved the marketplace, OpenRouter proved unified metering, x402 proved machine payments. We're the only one holding catalog, execution, and settlement together — and the only one where supply onboards itself.

The team

Three full-stack engineers. Everything you just saw, we built.

Marketplace, metered gateway, x402 + Stripe payments, CLI, MCP server, agent skills — shipped to production by three people.

0xAA
0xAA
Founder · PhD candidate, Computational Neuroscience, Peking University. Founder of WTF Academy.
daxiong
daxiong
Founding engineer · Full-stack — gateway, billing, and provider console.
glacierluo
glacierluo
Founding engineer · Full-stack — agent surfaces: CLI, MCP, and skills.
20k+ GitHub stars 10k+ developers taught into Web3 180k followers on X We run our own provider skill

We onboarded the first APIs by hand, hit every edge case ourselves, then wrote the provider skill so agents could do it without us — everything since has been onboarded by agents. We didn't design that pipeline from theory. We automated our own bottleneck, and the catalog kept growing.

The ask & roadmap

Raising $__M to become the clearing layer for the agent economy.

Twelve months, three milestones — each one unlocks the next turn of the flywheel.

Supply · 0–6 mo

10,000 APIs

Scale AI auto-review so agents onboard the long tail themselves.

Demand · 3–9 mo

10× active keys

Ship into MCP directories and every major agent framework.

Rails · 6–12 mo

Agents paying agents

Agent wallets + x402 by default — machine-to-machine commerce, settled per call.

Try it now → xapi.to npx xapi-to npx skills add xapi-labs/xapi-provider