Web answers with citations from Exa: a cited answer to a question

Web answers with citations from Exa: a cited answer to a question. Call it when an agent needs a sourced answer rather than raw search results, with no API key or account. Served by SingIt.

1 route settlement-verified · $0.006 USDC/request · 1 endpoint · Data · base network · x402 protocol

Verified routes

• POST /v1/exa/answer (What is x402 · $0.006 · Verified with a $0.006 test payment on 1 Nov 2026 · receipt

Other routes are unverified.

Networks: Base (settlement-verified), Solana (accepted)

Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.

url https://payapi.market/mcp

Listing facts

Provider

LLM chat completions API, OpenAI-compatible: one endpoint for 100+ models

Hosted at

ask.singitai.app

Category

Data

Price

$0.006 USDC per request

Payment networks

Base, Solana

Settlement-verified

1 route, last checked 2026-11-01

Listed on PayAPI Market

2026-11-01

Try Web answers with citations from Exa: a cited answer to a question

Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.

curl -i -X POST "https://ask.singitai.app/v1/exa/answer (What is x402"

About this API

Web answers with citations from Exa: a cited answer to a question is listed in the Data category with pricing at $0.006 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-11-01. View receipt on Basescan.

Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.

This API exposes 1 endpoint.

Questions about this API

What does Web answers with citations from Exa: a cited answer to a question do?

Web answers with citations from Exa: a cited answer to a question. Call it when an agent needs a sourced answer rather than raw search results, with no API key or account. Served by SingIt. It is provided by LLM chat completions API, OpenAI-compatible: one endpoint for 100+ models.

How much does Web answers with citations from Exa: a cited answer to a question cost?

Web answers with citations from Exa: a cited answer to a question is priced at $0.006 USDC per request, paid per call with no subscription. Verified with a $0.006 test payment on 1 Nov 2026. The exact amount for each call is in the HTTP 402 response before any money moves.

Do I need an API key or account to use Web answers with citations from Exa: a cited answer to a question?

No. Web answers with citations from Exa: a cited answer to a question uses the x402 protocol, so an agent pays per request in USDC on Base, Solana and gets the response, with no API key, account or signup.

Has Web answers with citations from Exa: a cited answer to a question been verified?

Yes, 1 route. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-11-01.

How does an AI agent find Web answers with citations from Exa: a cited answer to a question?

Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.

More Data APIs · Browse the marketplace · List your own API

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