Pay-per-call AI agent on Questflow for developer/software tasks via x402 micropayments on Base.
What it does
This x402 endpoint exposes a Questflow AI agent accessible at `qrn:agent:68cd37a11e25c97d05356aad`. The agent is described in its payment challenge as "The AI-powered developer platform to build, scale, and deliver secure software." It accepts a POST request with a JSON body containing an `input` string (your message to the agent) and returns a `response` string. Payment is handled via the x402 protocol on the Base network using USDC (asset `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`), with a maximum cost of 100,000 base units per call (0.10 USDC assuming 6-decimal USDC) and a timeout of up to 1,200 seconds.
Questflow is a platform for building and deploying AI agents ("Clones") that operate autonomously across onchain markets such as Polymarket, Pump.fun, OKX, and Opinion Labs. The broader platform focuses on crypto-native AI agents with their own wallets and tokens. However, this specific endpoint's description suggests it is oriented toward software development assistance rather than market trading. Because no dedicated API documentation, OpenAPI spec, or detailed agent capability description was found, the exact scope of what this agent can do beyond accepting a text prompt and returning a text response is unclear.
The endpoint is live and returns a valid x402 challenge on POST. The output schema is simple: one required input field (`input`: string) and one output field (`response`: string). No authentication beyond the x402 payment header is required.
Capabilities
Use cases
- —Sending natural-language prompts to an AI agent and receiving text responses via micropayment
- —Integrating a pay-per-call AI assistant into automated workflows or agent pipelines
- —Programmatic access to a Questflow-hosted AI agent without subscription or API key
Fit
Best for
- —Developers wanting pay-per-use AI agent access on Base via x402
- —Agent-to-agent communication pipelines that need a simple text-in/text-out interface
- —Crypto-native applications that prefer onchain micropayments over traditional billing
Not for
- —Users needing detailed, documented API with rich tooling or function-calling capabilities
- —High-volume, low-latency use cases (max timeout is 1200 seconds per call)
- —Anyone requiring a free or traditional API-key-authenticated endpoint
Quick start
curl -X POST https://api.questflow.ai/x402/agent/qrn:agent:68cd37a11e25c97d05356aad \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{"input": "Explain how to set up a CI/CD pipeline."}'Example
Request
{
"input": "Explain how to set up a CI/CD pipeline."
}Response
{
"response": "To set up a CI/CD pipeline, start by choosing a CI/CD tool such as GitHub Actions, GitLab CI, or Jenkins..."
}Endpoint
Quality
The endpoint is live with a valid x402 challenge and a clear output schema, but there is no API documentation, no OpenAPI spec, and the agent's actual capabilities are undocumented. The existing description appears to be a generic tagline rather than a precise description of what this specific agent does.
Warnings
- —No API documentation or OpenAPI spec found; /docs, /api, /pricing, /README all return 404
- —The agent description ('AI-powered developer platform to build, scale, and deliver secure software') appears generic and may not accurately reflect the agent's actual capabilities
- —The Questflow landing page focuses on crypto market trading clones, which contradicts the developer-platform description — the agent's true purpose is unclear
- —Response content and quality cannot be verified without making a paid call
Citations
- —The endpoint returns a valid x402 challenge with USDC on Base network, maxAmountRequired 100000, and 1200s timeouthttps://api.questflow.ai/x402/agent/qrn:agent:68cd37a11e25c97d05356aad
- —The output schema specifies a POST method with an 'input' string field and a 'response' string outputhttps://api.questflow.ai/x402/agent/qrn:agent:68cd37a11e25c97d05356aad
- —Questflow platform focuses on AI Clones that aggregate onchain markets like Polymarket, Pump.fun, OKX, and Opinion Labshttps://api.questflow.ai
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://api.questflow.ai/x402/agent/qrn:agent:68cd37a11e25c97d05356aad