Every agent-payable API.

Social Twitter — an agent-callable social twitter service, payable over x402 (USDC on Base). Provided via palmyr.ai.

Sol Usd — an agent-callable sol usd service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.01 USD per call.

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 T6G59ANZRFBKRHXTHG on Solana. Model gpt-5-mini, max_input_tokens=12500, max_output_tokens=7500. Preprompt preview (first 150 chars): "Give me the 5 raw output from the most important new topics in this output also add the image link to every post :". Pricing mode: agent-per-token. Prepaid price (x402) for this request: 0.027516 USDC. Estimated input tokens for pricing: 12538.

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 J38T6ZGANCNB8SLZJZ on Solana. Model gpt-5-mini, max_input_tokens=5000, max_output_tokens=5000. Preprompt preview (first 150 chars): "can yes extract the atrifact url from this output, only reply with the image url nothing else". Pricing mode: agent-per-token. Prepaid price (x402) for this request: 0.017013 USDC. Estimated input tokens for pricing: 5031.

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. This specific request uses model gpt-5-mini with max_output_tokens=700. Pricing mode: per-token. Prepaid price (x402) for this request: 0.002261 USDC. Estimated input tokens for pricing: 401.

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.

Solana → Base USDC microbridge. This request will accept a payment of 12.350000 USDC on Solana to the bridge wallet and, after a 2.5% commission of approximately 0.308750 USDC, will attempt to deliver around 12.041250 USDC on Base to the specified receiver. If the Base transfer cannot be completed after 2 attempts, the bridge refunds the full original amount on Solana; if the refund also fails after 3 attempts, the bridge is marked as failed and manual support is required.

Space Satellite — an agent-callable space satellite service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.00144 USD per call.

Spark — an agent-callable spark service, payable over x402 (USDC on Base). Provided via x420.dev. Priced around 1 USD per call.

UK Stamp Duty Land Tax (SDLT) calculator with first-time buyer relief and surcharges.

Stocks Company News — an agent-callable stocks company news service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.001 USD per call.

Stocks Earnings Surprises — an agent-callable stocks earnings surprises service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.001 USD per call.

Stocks Metrics — an agent-callable stocks metrics service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.001 USD per call.

Stocks Patents — an agent-callable stocks patents service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.001 USD per call.

Stocks Peers — an agent-callable stocks peers service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.001 USD per call.

Stratalize — attested finance, legal, healthcare, and compliance intelligence. Signed, independently verifiable receipt on every call (trust.stratalize.com/verify). Salary benchmarks by job title — p25, p50, p75 wage estimates with state and industry adjustments across 50+ role families. Source: BLS Occupational Employment Statistics, latest release. Use when setting compensation ranges or evaluating a job offer

Critical-minerals supply-concentration & US import-reliance signal

Summarize text into its key sentences with extractive frequency scoring, returns top sentences in original order plus compression stats. text summarization, summarize text, tldr, article summary, key sentences, extractive summarizer

The list of US federal agencies from the Federal Register API, no key. Returns agency names, ids, and slugs. For AI agents resolving and navigating US agencies.

Open interest for any Binance Futures perpetual with 24h change %, USD notional, 5-minute OI history over last 24 hours. AI agent leverage buildup detector, squeeze-setup finder, funding-pressure precursor, position monitoring, perp OI API.

Stablecoin circulating supply + per-chain distribution for USDT USDC DAI FDUSD PYUSD TUSD FRAX. Total supply, by-chain breakdown (Ethereum Tron BSC Solana Base Arbitrum), peg deviation, 30d supply change. AI agent dollar liquidity migration tracker, capital flow API.

Summarize a URL or pasted text into 3-5 concise bullets. $0.01 USDC.

TRUST-VETTED token intelligence — price + market data PLUS a scam/rug-risk read on the project behind the coin (legit site? brand-new domain? red flags?). Only DYOE combines market data + trust. Input: ?symbol=

Tax Vat — an agent-callable tax vat service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.001 USD per call.

TCGPlayer current prices for every card in a set — useful for set value tracking and sealed Pokemon / Magic / Yu-Gi-Oh product pricing.

Test payment #2 - Agent service

Pay 27d61ea1 8e1d 4c9e A3e7 Ebb379278327 — an agent-callable pay 27d61ea1 8e1d 4c9e a3e7 ebb379278327 service, payable over x402 (USDC on Base). Provided via clawpay.ai. Priced around 0.01 USD per call.

Pay 7ac146af 6698 4970 B775 1e821d6d7fe0 — an agent-callable pay 7ac146af 6698 4970 b775 1e821d6d7fe0 service, payable over x402 (USDC on Base). Provided via clawpay.ai. Priced around 0.01 USD per call.

Pay F43c716c C41c 45c8 B535 E7137a0b22f9 — an agent-callable pay f43c716c c41c 45c8 b535 e7137a0b22f9 service, payable over x402 (USDC on Base). Provided via clawpay.ai. Priced around 0.01 USD per call.

Test payment - Clawpay demo

Testnet demo endpoint for x402 resource discovery

Text diff / text comparison / diff two strings / line diff / word diff / character diff / file diff / text patch / unified diff format / compare strings / git diff style / text difference. Compare two texts, return added/removed/unchanged segments. Line, word, or char granularity.

The active deepnets watchlist - high-volume tokens that passed the safety screen, with current safety data.

The Tavily provides comprehensive web search and data extraction capabilities through four powerful tools: tavily-search for real-time web search, tavily-extract for intelligent data extraction from web pages, tavily-map for creating structured website maps, and tavily-crawl for systematic website exploration. This server enables AI assistants to access current web information, extract relevant data, and navigate complex web structures efficiently. | Powered by Questflow

The coins trending right now — for trading & research agents. Input: (none)

Timezone converter / convert time between timezones / UTC to PST EST GMT IST JST / world clock / international time / time zone calculator. Convert any datetime between any two IANA timezones (America/New_York, Asia/Tokyo, Europe/London, etc.).

Token security analysis: holder concentration, liquidity locks, risk scoring. (with AI analysis)

Token-centric whale accumulation view with net capital flows and top holders. (with AI analysis)

Token-centric whale accumulation view with net capital flows and top holders. (with AI analysis)

Top Uniswap V3 liquidity pools on Ethereum ranked by total value locked in USD, each with token pair, fee tier, TVL and all-time volume, from a subgraph behind an API key. For market overview and routing. top pools, largest pools, uniswap tvl ranking, deepest liquidity, dex pools

Top Zora Launchpad tokens by trading volume (Base only). (with AI analysis)

Top gainers & losers (24h) across the top 100 coins — for trading agents. Input: (none)

Top token holders and whale concentration for an ERC20 on Base, estimated from recent Transfer events, with each holder's percentage. token holders, holder distribution, whale concentration, top holders, token ownership, holder analysis

Top tokens ranked by market cap with price, volume, and supply metrics. (with AI analysis)

Top up account balance with crypto payment

Total supply, name, symbol and decimals for any ERC20 token contract on Ethereum, Base, Arbitrum, Optimism or Polygon. token supply, erc20 total supply, circulating supply, token info, coin supply

Trace the first incoming transfer that funded a Base address: funder address, asset, amount, block and time. Pairs with x402 dewash for sybil cluster and burner wallet analysis. wallet funding source, first funder, who funded this wallet, sybil detection, wallet provenance, burner cluster

Track Base network fee trends over time — avg gas per block, cheapest hours, L1 vs L2 comparison. Useful for agents timing their transactions.

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.