vAPI Call: an API marketplace for AI agents
vAPI Call is an API marketplace for AI agents and the people who run them. Agents search a directory of x402 APIs for free, then pay each request in USDC from their own wallet, with no account or API key at the provider. vAPI never signs a payment and holds no buyer balance.
| Item | Current state |
|---|---|
| vAPI Call | Live in the console |
| Payment | x402 v2 exact, one USDC authorization per request |
| Networks | Base and Arc |
| Search and inspect | Free |
| Network fee | vAPI Call takes no fee. Providers are paid directly. |
| Client | vapi-network on npm |
| Checked on | 2026-10-02 |
How an agent finds and pays an API
- Install the client with
npm i -g vapi-networkand create a local wallet withvapi init. - Send a small amount of USDC on Base to that wallet.
vapi fundopens a funding page. - Find an API with
vapi search, then read its request contract, price, fee, verification and liveness withvapi inspect. Both are free. - Pay with
vapi pay <listing> --max 0.02. The client reads the live 402, checks it against your per-call and daily caps, signs one exact USDC authorization and returns the API's response with a local receipt.
Agents in an MCP client use the same flow through the tools call.search, call.inspect and call.pay. People can also pay from a browser wallet in the console, which asks the wallet to sign every paid request.
A search on staging
This is vapi-network 0.7.0 run against the staging directory on 2026-10-02.
$ VAPI_REGISTRY_URL=https://api-staging.vapinetwork.ai vapi search --limit 3
decodepaymentauthorization api [vapi] [verified] decodePaymentAuthorization
Decode what an EVM payment authorization actually authorizes
Fee: No network fee
stablephone api [partner] [verified] StablePhone
Have an AI voice agent phone a US or Canadian number and carry out a task. Each call settles $0.54 in USDC on Base over x402.
Fee: No network fee
the-graph api [partner] [verified] The Graph
Send GraphQL queries directly to The Graph's x402 endpoint. Each request settles $0.01 in USDC on Base.
Fee: No network fee
$ VAPI_REGISTRY_URL=https://api-staging.vapinetwork.ai vapi inspect decodepaymentauthorization
Verification: verified
Fee: No network fee
Liveness: 99.4% up over 7 days (168 checks) · p50 89 ms · p95 359 ms
Conformance: x402 v2, conformant, offer in header and bodyWhat it costs
- Search, inspect and the request contract cost nothing, in the client, the hosted MCP and the console directory.
- Each API sets its own price in its live 402. On staging, a decode costs $0.005, a query to The Graph $0.01 and a StablePhone call $0.54.
- The live 402 is the price you pay. A price shown in search can be out of date, so the client reads the 402 again before it signs.
- vAPI Call takes no fee. Providers are paid directly.
- There is no subscription, and vAPI holds no balance for you.
How listings earn trust
Verifiedmeans vAPI reviewed the API against a published nine-point rubric.Unverifiedmeans it passed the automated x402 probe and has not been reviewed.External catalogmarks listings mirrored from Coinbase's x402 Bazaar. vAPI rechecks them in batches, each at most once a day.- Self-listed and partner APIs are probed again every hour. Three failed checks in a row suspend a listing until the provider fixes the endpoint and goes live again.
- Default search shows verified APIs and the external catalog. Add
--include-unverifiedto see the rest.