Every agent-payable API.

Base network health dashboard — TPS, block time, gas price, TVL, daily transactions, total addresses, and 24h/7d trend data. Aggregates data from L2Beat, DeFiLlama, and the Base RPC.

Compare Polymarket API vs Polygon blockchain events for latency arbitrage, whale signals, settlement predictions. (with AI analysis)

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Real-time DEX volume comparison on Base: UniswapV3, Aerodrome, BaseSwap, SushiSwap. Returns 24h volume per DEX, top pairs by volume, volume trends. Data from DeFiLlama + DexScreener.

Returns the newest tokens minted on the blockchain based on mint timestamp, filtered by an activity window and optional category.

Real DeFi yield intelligence via DefiLlama. Enriched with gas-adjusted net APY, protocol risk tier (A-D), and IL estimates. Params: ?chain=base&minTvl=100000&minApy=5. No AI hallucinations — all data from DefiLlama pools API.

AI agent runtime with crypto payments on Solana blockchain

Current crypto market sentiment analysis

Get the latest event in crypto market

Get the latest sundown digest in crypto market

Latest crypto headlines from aggregated RSS feeds

Monitor stablecoin prices vs peg, 24h supply flows, and depeg alerts on Base. Covers USDC, USDT, DAI, EURC, USDbC. Uses CoinGecko + DeFiLlama.

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Real-time DEX volume tracker on Base. Top DEXes by 24h volume, market share, and growth rate. Live data from DeFiLlama. Supports ?chain=base&period=24h&demo=true.

Solana GPT wrapper API using x402 payments. Default direct call: model gpt-5-mini, max_output_tokens=2000, fixed price 0.01 USDC for up to 1000 input tokens. For all other settings the price is computed per model as (input_tokens * input_price_per_million + max_output_tokens * output_price_per_million) / 1,000,000, with a minimum of 0.001 USDC and always rounded up to 6 decimals. Optional max_input_tokens lets you cap the input tokens used for pricing; if the message is longer than this cap the server returns an error instead of under-pricing. Optional action=message (or omitting action) performs a direct GPT call with the given message. Optional action=create creates a custom agent with the given message as preprompt for 0.001 USDC (no OpenAI call), stores a base_price_usdc using (max_input_tokens_for_agent or 1000) + preprompt + max_output_tokens, and returns a custom_id. Optional action=list lists up to 100 recent custom agents for the paying wallet for 0.001 USDC without calling OpenAI. Custom agents can be called via POST /solana/llm/gpt with custom_id, or POST /solana/llm/gpt/{custom_id}. Each custom agent has a fixed price per call based on its stored preprompt, model, max_output_tokens and max_input_tokens; if the runtime message is longer than max_input_tokens the server returns an error. Custom LLM agent H32KZAUGYY5MPHEX62 on Solana. Model gpt-5.1, max_input_tokens=5000, max_output_tokens=5000. Preprompt preview (first 150 chars): "You are a professional voice-over scriptwriter for short audio newsflashes. Task: Read the provided list of crypto-related topics and generate a conc". Pricing mode: agent-per-token. Prepaid price (x402) for this request: 0.085632 USDC. Estimated input tokens for pricing: 5316.

Solana GPT wrapper API using x402 payments. Default direct call: model gpt-5-mini, max_output_tokens=2000, fixed price 0.01 USDC for up to 1000 input tokens. For all other settings the price is computed per model as (input_tokens * input_price_per_million + max_output_tokens * output_price_per_million) / 1,000,000, with a minimum of 0.001 USDC and always rounded up to 6 decimals. Optional max_input_tokens lets you cap the input tokens used for pricing; if the message is longer than this cap the server returns an error instead of under-pricing. Optional action=message (or omitting action) performs a direct GPT call with the given message. Optional action=create creates a custom agent with the given message as preprompt for 0.001 USDC (no OpenAI call), stores a base_price_usdc using (max_input_tokens_for_agent or 1000) + preprompt + max_output_tokens, and returns a custom_id. Optional action=list lists up to 100 recent custom agents for the paying wallet for 0.001 USDC without calling OpenAI. Custom agents can be called via POST /solana/llm/gpt with custom_id, or POST /solana/llm/gpt/{custom_id}. Each custom agent has a fixed price per call based on its stored preprompt, model, max_output_tokens and max_input_tokens; if the runtime message is longer than max_input_tokens the server returns an error. Custom LLM agent YXPJPFB26CSY6VTN3N on Solana. Model gpt-5.1, max_input_tokens=1000, max_output_tokens=2000. Preprompt preview (first 150 chars): "You are a professional voice-over scriptwriter for short audio newsflashes. Task: Read the provided list of crypto-related topics and generate a conc". Pricing mode: agent-per-token. Prepaid price (x402) for this request: 0.032632 USDC. Estimated input tokens for pricing: 1316.

Top up account balance with crypto payment

Track upcoming and recent airdrops relevant to Base ecosystem — eligibility criteria, estimated value, deadlines, farming strategies. Aggregated from DefiLlama + curated Base protocol list. Unique to httpay.xyz.

Crypto fortune cookie

Fresh Markets Watch — newly created DeFi pools/markets sorted by APY with TVL, protocol, token pair, and risk warnings for new pools. Supports ?chain=base&hours=24&demo=true.

Crypto 'Would You Rather' scenarios

Flip a blockchain-verified* coin (*not actually verified)