Research verification infrastructure

Pay only when your agent needs an answer.

Verify citations, extract evidence, compare claims, score sources, and build research briefs for $0.01–$0.10 per request. No account. No subscription. USDC settlement over x402 on Base Mainnet.

Integrate now Inspect all 10 APIs

Every paid route first returns HTTP 402 with exact payment requirements. x402 client libraries can authorize payment and retry automatically.

10live paid APIs

$0.01lowest entry price

BaseMainnet USDC

● ● ●

# Clone the repository and install
npm install

# Fund a dedicated Base wallet with USDC
# Never use a high-value wallet private key

EVM_PRIVATE_KEY=0x... npm run buy:verify

# Result
HTTP 200
Payment settled
Structured verification returned

What buyers get

One HTTP call. One exact price. One structured result.

Send evidence

Submit a factual claim, topic, or public source URL using JSON.

Pay automatically

The client handles the 402 challenge, signs the exact USDC payment, and retries.

Use the answer

Receive machine-readable JSON for your agent, pipeline, application, or research workflow.

Live catalog

Ten specialized research tools.

Product	Endpoint	Price
Citation verification	`POST /verify-citation`	$0.01
Evidence extraction	`POST /extract-evidence`	$0.02
Claim comparison	`POST /compare-claims`	$0.03
Source credibility	`POST /score-source`	$0.03
Research brief	`POST /research-brief`	$0.10
Fact check	`POST /fact-check`	$0.04
Timeline extraction	`POST /extract-timeline`	$0.04
Conflict detection	`POST /detect-conflicts`	$0.05
Statistical claim check	`POST /check-statistics`	$0.05
Research questions	`POST /generate-research-questions`	$0.03

For AI agents

Use the OpenAPI document, machine manifest, Bazaar discovery metadata, or the included MCP bridge.

For developers

Use the automatic-paying Node buyer examples or call the REST endpoints from any x402-compatible client.

For research systems

Insert verification, evidence extraction, and source-quality checks directly into RAG and due-diligence pipelines.

Fastest integration path

Start with the one-cent citation verifier.

Run the buyer example, complete one real payment, inspect the structured result, then move the endpoint into your application.

Open integration docs View agent manifest