x402 merchant

agent402.tools

Developer tools API on Algorand, paid per request with x402.

Endpoints584
Price per requestn/a
Outside payersn/a
Answer 4021 of 2

Overview

as of 2026-11-07

Seller wallet: C7IIHG7SPLPZ5H7ZT6HW3UV2OQMQQE6Y2HBNGZXSLRJULE42BEE2OY2XIE
Chains: Algorand
Hosts: agent402.tools
Categories: Developer tools135Market data103Onchain data84Other71AI models49Media39Web data38Identity29Search17Security11Agents4Commerce4
First seen: 2026-10-05 · last seen 2026-11-07

What we observed

Payments unknownAnswers 4022026-11-07Not claimed

See the readings

Endpoints

721 registered

https://agent402.tools/api/json-to-yaml
Convert JSON to YAML.
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/json-validate
Validate a JSON document against a JSON Schema (draft-07 subset) and get the list of violations. Supports type, required, properties, items, enum, const, min/max, length, pattern, format, anyOf/allOf/oneOf/not, addition…
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/jsonl
Convert between a JSON array and JSONL/NDJSON (one JSON object per line). mode: to-jsonl (array → lines) or from-jsonl (lines → array). For streaming records to and from agents and datasets.
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/jsonl
Convert between a JSON array and JSONL/NDJSON (one JSON object per line). mode: to-jsonl (array → lines) or from-jsonl (lines → array). For streaming records to and from agents and datasets.
AlgorandDeveloper tools
n/a/ request
2026-11-04
https://agent402.tools/api/jwt-decode
Decode a JWT without verification: header (algorithm), payload claims (subject, issuer, expiration), expiry status, and time remaining. (Decoding only - signatures are NOT verified.)
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/jwt-sign
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/jwt-verify
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/kalshi-event
Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …
AlgorandMarket data
n/a/ request
2026-10-27
https://agent402.tools/api/kalshi-live-data
The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…
AlgorandMarket data
n/a/ request
2026-10-27
https://agent402.tools/api/kalshi-markets
List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…
AlgorandMarket data
n/a/ request
2026-10-27
https://agent402.tools/api/kalshi-weather-index
Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …
AlgorandMarket data
n/a/ request
2026-10-27
https://agent402.tools/api/keywords
Top keywords and two-word phrases by frequency (stopwords removed). Cheap, deterministic signal for routing, tagging, and dedup.
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/l2-gas-comparison
Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/l2-tvl
Top L2s by Total Value Locked (TVL) from an open DeFi analytics API. Returns each L2 with TVL in USD, native token symbol, and market-data coin ids. Classification combines the source's parent-chain hint with a curated …
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/leap-year
Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.
AlgorandOther
n/a/ request
2026-10-27
https://agent402.tools/api/lei-lookup
Look up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entiti…
AlgorandOther
n/a/ request
2026-10-27
https://agent402.tools/api/levenshtein
Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/linear-regression
Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…
AlgorandOther
n/a/ request
2026-10-27
https://agent402.tools/api/llm
LLM inference proxy - send an OpenAI-format chat/completions request and get a response from GPT-4o-mini (or gpt-6-luna by its id). Supports vision (up to 2 image URLs, low detail) and structured output (response_format…
AlgorandAI models
n/a/ request
2026-10-27
https://agent402.tools/api/llm-context
Web search that returns READY-TO-USE grounding text, not links: for one query you get the passages an independent search index extracted from the pages it ranked, flattened into chunks with their source URL and title an…
AlgorandSearch
n/a/ request
2026-10-27
https://agent402.tools/api/llm-premium
LLM inference proxy (Premium tier) - o3 or gpt-5.6-terra reasoning models (default gpt-5.6-terra; the retired o3-mini and o4-mini ids are served by gpt-5.6-terra). Supports vision (up to 2 image URLs) and structured out…
AlgorandAI models
n/a/ request
2026-10-28
https://agent402.tools/api/llm-pro
LLM inference proxy (Pro tier) - GPT-4o or GPT-4.1 (or gpt-6.1-sol by its id). Supports vision (up to 2 image URLs) and structured output (response_format: json_object or json_schema). No API key needed; pay per call vi…
AlgorandAI models
n/a/ request
2026-10-27
https://agent402.tools/api/loan-payment
Compute the monthly (or per-period) payment on a fully-amortizing loan: mortgage, auto, student loan, business loan. Returns the periodic payment, total paid over the term, and total interest. Matches Excel's PMT(rate, …
AlgorandCommerce
n/a/ request
2026-10-27
https://agent402.tools/api/loop-gate
Should the loop run another iteration? Send the goal, the iteration that just finished (lastOutput, iteration), and optionally maxIterations, a budget { spentUsd, maxUsd }, the history of earlier iterations (up to 20 of…
AlgorandOther
n/a/ request
2026-10-27
https://agent402.tools/api/lorem
Placeholder text.
AlgorandDeveloper tools
n/a/ request
2026-11-04
https://agent402.tools/api/lorem
Placeholder text.
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/markdown-to-html
Render CommonMark + GFM markdown to HTML.
AlgorandWeb data
n/a/ request
2026-10-27
https://agent402.tools/api/mcp-package-check
The published facts about an npm package that ships an MCP server, read before running it: resolved version and publish date, package and version age, maintainer count, provenance attestation, install scripts (preinstal…
AlgorandSecurity
n/a/ request
2026-11-06
https://agent402.tools/api/mcp-package-check
The published facts about an npm package that ships an MCP server, read before running it: resolved version and publish date, package and version age, maintainer count, provenance attestation, install scripts (preinstal…
AlgorandSecurity
n/a/ request
2026-10-27
https://agent402.tools/api/media-info
Inspect any audio/video URL with ffprobe: container, duration, bitrate, and per-stream codec details (sample rate/channels for audio, resolution/fps for video) as JSON. Only audio is decoded: a video, image or subtitle …
AlgorandMedia
n/a/ request
2026-11-06
https://agent402.tools/api/media-info
Inspect any audio/video URL with ffprobe: container, duration, bitrate, and per-stream codec details (sample rate/channels for audio, resolution/fps for video) as JSON. Body: {"url":"https://…/file.mp4"}.
AlgorandMedia
n/a/ request
2026-10-28
https://agent402.tools/api/meta
Fetch page metadata for a URL: title, description, OpenGraph, Twitter cards, canonical URL, favicon.
AlgorandWeb data
n/a/ request
2026-10-27
https://agent402.tools/api/mev-block-payment
Look up the MEV-Boost payment for a specific slot or block number from a major MEV-Boost relay's public data API. Returns the builder, proposer, value paid in ETH, gas usage, and tx count. Returns found=false if the blo…
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/mev-builder-share
Builder market share aggregated over the last N MEV-Boost blocks from a major MEV-Boost relay's public data API. Returns per-builder block count, share percent, total ETH paid to proposers, and average per block. Use to…
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/mev-recent-blocks
Last N MEV-Boost-built blocks from a major MEV-Boost relay's public data API. For each block: slot, block number/hash, builder pubkey, proposer pubkey, gas used/limit, ETH paid to the proposer, and tx count. Use to moni…
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/mime
Look up a MIME type by file extension.
AlgorandOther
n/a/ request
2026-10-27
https://agent402.tools/api/moderate
Check text for harmful content using OpenAI moderation (omni-moderation-latest). Returns flagged status, category breakdown (harassment, hate, self-harm, sexual, violence, etc.), and confidence scores. No API key needed…
AlgorandAI models
n/a/ request
2026-10-27
https://agent402.tools/api/morse
Encode text to Morse code or decode it back. mode: encode (default) or decode. Words separated by ' / '.
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/moving-average
Compute simple (SMA) and exponential (EMA) moving averages over a numeric series. Returns one value per input position - the first (window-1) SMA values are null since there isn't enough history. EMA uses the standard a…
AlgorandMarket data
n/a/ request
2026-10-27
https://agent402.tools/api/multi-search
Run 2-5 web searches in one call with a 20% volume discount vs. individual searches. Each query returns ranked results (title, URL, snippet). Ideal for multi-faceted research or comparing sources on different aspects of…
AlgorandSearch
n/a/ request
2026-10-28
https://agent402.tools/api/multi-search
Run 2-5 web searches in one call with a 20% volume discount vs. individual searches. Each query returns ranked results (title, URL, snippet). Ideal for multi-faceted research or comparing sources on different aspects of…
AlgorandSearch
n/a/ request
2026-11-06
https://agent402.tools/api/nft-collection
Fetch NFT collection (ERC-721 / ERC-1155) metadata by contract address on Ethereum, Base, Polygon, Arbitrum, or Optimism: name, symbol, token type, total supply, deployer, OpenSea slug + image, floor (ETH), Twitter/Disc…
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/nft-floor
Get the current floor price for an NFT collection across OpenSea + LooksRare (Ethereum). Returns per-marketplace floor (ETH), collection URL, retrieval timestamp, and the cheapest cross-marketplace floor with the market…
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/nft-holdings
Return the NFTs owned by a wallet address on a given network. Each row carries the collection name, contract address, token ID, image URL (where available), and ERC-721 vs ERC-1155 standard. Up to 100 per call - paginat…
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/nft-metadata
Resolve the metadata for a single NFT: title, description, image URLs (original + cached CDN), attributes/traits, and the standard (ERC-721 vs ERC-1155). Useful when you have a contract+tokenId and need the display data…
AlgorandOnchain data
n/a/ request
2026-10-27
https://agent402.tools/api/npv
Compute the net present value of a stream of cashflows at a given discount rate. Index 0 is treated as t=0 (today, not discounted); indices 1..n are discounted by (1+rate)^t. Matches Excel's NPV but with the conventiona…
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/number-format
Format a number: thousands separators, fixed decimals, optional currency, or compact (1.2K / 3.4M).
AlgorandOther
n/a/ request
2026-10-27
https://agent402.tools/api/onchain-sql
Run read-only SQL against indexed, DECODED blockchain data - base.events (decoded logs with parameters), base.transactions, base.blocks, base.decoded_user_operations, base.transaction_attributions (builder codes), plus …
AlgorandOnchain data
n/a/ request
2026-11-04
https://agent402.tools/api/onchain-sql
Run read-only SQL against indexed, DECODED blockchain data - base.events (decoded logs with parameters), base.transactions, base.blocks, base.decoded_user_operations, base.transaction_attributions (builder codes), plus …
AlgorandDeveloper tools
n/a/ request
2026-10-27
https://agent402.tools/api/onchain-sql-schema
The table + column schema for the onchain-sql tool - every queryable table (base.events, base.transactions, base.blocks, base.decoded_user_operations, base.transaction_attributions, solana.instructions, …) with its colu…
AlgorandDeveloper tools
n/a/ request
2026-10-27

Evidence

as of 2026-11-07

Answers HTTP 402

1 of 2

1 of 2 probed endpoints answered HTTP 402 with a parseable payment payload

checked 2026-11-07

x402-style payments, 7-day window (Base)

unknown

unknown. not measured on this chain yet

no reading date

By chain

Chain	Seller wallet	Endpoints	Answers 402	x402-style payments
Algorand	C7IIHG7SPLPZ5H7ZT6HW3UV2OQMQQE6Y2HBNGZXSLRJULE42BEE2OY2XIE	584	1 of 2 probed endpoints answered HTTP 402 with a parseable payment payload 2026-11-07	unknown. not measured on this chain yet

One seller wallet, each chain read on its own. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.

Pricing

Lowest

n/a

per request, as registeredas of 2026-11-07

Median

n/a

per request, as registeredas of 2026-11-07

Highest

n/a

per request, as registeredas of 2026-11-07

Unknown. Prices are decoded only for USDC on Base and Solana.

Claim this merchant

Sign a message from the payout address C7IIHG7S…OY2XIE to claim this page. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.

The payment ledger covers Base only for now, so it is not offered for Algorand.

Data CC-BY-4.0, attribution: data by satohub.ai. Data: x402-list.com (CC BY 4.0). Data as of 2026-11-07. Appearing here is not an endorsement. Check an endpoint with the doctor.