Assay

agent402.tools

Utilities514 endpointsagent402.tools

Cryptographic hash of a text string. Algorithms: sha256 (default), sha512, sha1, md5. Returns hex and base64 digests.

Pays to C7IIHG7SPLPZ5H7ZT6HW3UV2OQMQQE6Y2HBNGZXSLRJULE42BEE2OY2XIE

Pays elsewhere2 rerouted · 22h ago2 above list8 of 514 failing
$0.001 – $1.50
USDC
Score
None yetno buyer reviews yet
Positive
None yetno buyer reviews yet
Paid calls
2,0894 distinct payers
Verified
22h ago506 of 514 as listed
On-chain
C7IIHG7S…OY2XIEpayout address on Algorand
All514With a finding8Free with proof of work12

514 of 514 endpoints

  • POST

    /api/openapi-search

    Search operations in an OpenAPI 3.x or Swagger 2.x spec against a free-text query. Tokenizes the query (lowercase, alphanumeric runs), scores each operation by which fields the tokens match — operationId +3, path +3, tags +2, summary +2, descripti...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/openapi-security-summary

    Resolve authentication requirements across an OpenAPI 3.x or Swagger 2.x document. Returns the catalog of security schemes (`components.securitySchemes` in OpenAPI 3, `securityDefinitions` in Swagger 2) verbatim, the document-level default, and th...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/openapi-to-curl

    Build a runnable curl command for one operation in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operationId (preferred) or by method + path, substitute path parameters using the spec's example values, include required query and head...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/openapi-validate-payload

    Validate a JSON payload against the request or response schema for one operation in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operationId or method+path; choose `part: "request"` or `part: "response"` (status defaults to the firs...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/pdf-info

    Inspect a PDF without downloading the whole thing into your model: page count, title, author, subject, creator, producer, creation/modification dates, encryption flag, and byte size. Body: {"url":"https://…/file.pdf"}.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/polymarket-market

    Get full detail for a single Polymarket market by slug or id. Returns question, description, outcome prices (implied probabilities), volume, liquidity, end date, resolution status, and CLOB token ids needed for orderbook + history lookups.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/polymarket-orderbook

    Live CLOB orderbook for a Polymarket outcome token. Returns top N bids (highest first), top N asks (lowest first), best bid/ask, mid-price, and spread. Use a clobTokenId from polymarket-market or polymarket-search.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/polymarket-price-history

    Historical odds (implied probabilities) for a Polymarket outcome token. Returns timestamped price samples with first/last/min/max summary. Useful for: tracking probability shifts around events, computing realized volatility, backtesting prediction...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/polymarket-search

    Search active Polymarket markets by keyword. Returns the top matches sorted by 24h volume, with question, current outcome prices (implied probabilities), volume, liquidity, end date, and CLOB token ids for orderbook lookups.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
    Try it
  • GET

    /api/public-holidays

    Public holidays for a country and year via Nager.Date (keyless, 100+ countries): date, local name, English name, nationwide flag, and holiday types. Pairs with /api/business-days and /api/country-info. ?country=US&year=2026

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
    Try it
  • GET

    /api/qr

    free with PoW

    Generate a QR code PNG from any text or URL. ?text=…&size=256 (128-1024).

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/readability

    Flesch Reading Ease score and Flesch–Kincaid grade level for English text, plus word/sentence/syllable counts.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/redact

    Mask emails, phone numbers, credit-card-like numbers, IPs, and SSNs in text. Returns the redacted text and counts by type.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/robots-check

    Fetch a site's robots.txt and answer: may this user-agent crawl this path? Returns the matched rule and all declared sitemaps.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
    Open below

    Call it from here

    POST /api/robots-check

    Assay builds the request this listing describes, sends it, and shows you exactly what comes back — including when what comes back is a complaint.

    The request, built from the listing

    POST https://agent402.tools/api/robots-check

{"url":"https://example.com/some/page","userAgent":"MyAgent"}

    Declared inputsurluseragent

    Listed at $0.002. If it demands payment, you will see its live terms — this site cannot settle them.

    This page holds no key and cannot move money. Paid verification runs in an isolated worker with the only signing account, under the spend ceiling published in the methodology.

  • POST

    /api/selector-lookup

    Resolve a 4-byte function selector or a 32-byte event topic hash to its known human-readable Solidity signatures, via the openchain.xyz signature database with 4byte.directory as fallback. Unknown selectors return {found:false} with an empty list,...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/srt-convert

    Convert subtitles between SRT, WebVTT, plain text, and JSON cues. Send SRT or VTT text (auto-detected) — or a JSON cues array [{start,end,text}] with times in ms — and the target format. Deterministic, pure CPU.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
    Try it
  • POST

    /api/text-diff

    Line-by-line diff of two texts (LCS). Returns unified-style ops and change counts. Up to 2000 lines per side.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/totp

    Compute the current TOTP code (RFC 6238, 30s period, SHA-1, 6 digits) from a base32 secret. Useful for agents that must complete 2FA flows they are authorized for.

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/unshorten-url

    Follow a short link's redirect chain (bit.ly, t.co, youtu.be, tracking links, …) without downloading any page body: returns the final URL, the final HTTP status, and every hop with its status code and Location target. Capped at 5 redirects; every ...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
    Try it
  • POST

    /api/wallet-balance

    Look up the native coin balance (ETH/MATIC) plus every ERC-20 holding for a wallet address on Ethereum, Base, Polygon, Arbitrum, or Optimism. Returns clean decimal balances (already scaled by token decimals) plus symbol and contract — ready to dis...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
    Try it
  • GET

    /api/wallet-balances

    All token balances for any address in one call, from Coinbase's indexed data API — ERC-20 + native on EVM, SPL on Solana; no per-token contract calls, no RPC wrangling. Networks: base, ethereum, base-sepolia, solana, solana-devnet. Symbols/decimal...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/wallet-transactions

    Return the most recent asset transfers (incoming + outgoing) for a wallet address — native coin, ERC-20, ERC-721, ERC-1155 — already merged and sorted newest first. Each row carries the block, tx hash, counterparty, asset, and decimal value. Cap i...

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
    Try it
  • POST

    /api/xml-to-json

    Parse XML into a JSON object tree (attributes under _attrs, text under _text; repeated elements become arrays).

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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  • POST

    /api/yaml-to-json

    Parse YAML into JSON (safe schema — no code execution).

    as listed22h agoagent402.tools

    $0.002
    per call, USDC
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Buyer reviews

none yet · a review costs a settlement

Nobody has bought from agent402.tools through an address that came back to write about it. Rather than print an empty box, this page hands the position to the evidence it does have — Assay’s own verification record, immediately below.

  1. 01

    Pay the merchant

    Call one of their endpoints and settle the 402 challenge in USDC on Algorand mainnet. That transfer is the whole credential.

  2. 02

    Sign the settlement

    Connect the address that sent it and sign a message naming this merchant, that transaction and your score. Assay stores no account and no password.

  3. 03

    The receipt travels with it

    Your review renders with its transaction id linked to the public explorer, so anyone can re-derive that you were a customer. One settlement buys one review.

Assay’s own prober is barred from reviewing, and the exclusion is a row in the database rather than a claim in a footer. Own this payout address? Claim the listing

Verification record

last sweep 22h ago · 514 of 514 covered

Nobody has reviewed agent402.tools yet — a review attaches to a payout address and opens once a buyer has settled with it, because a settlement is the only thing that proves a reviewer was a customer. Until then this is the evidence Assay has: calls it made itself, and what came back.

What the last sweep found

answered as listed
506 answered as listed
answered, but not as listed
8 answered, but not as listed
  • Pays elsewhere2 endpoints
    • /api/route/execute
    • /api/route/execute-max
  • Price mismatch6 endpoints
    • /api/stock-quotelists $0.01, demands $0.003
    • /api/skill/domain-intellists $0.25, demands $0.075
    • /api/answerlists $0.03, demands $0.08
    • and 3 more

List every endpoint with a finding · checked 22h ago

Settled payments

Delivered for free, on proof of work

12 of this merchant’s endpoints accept a few milliseconds of CPU instead of money. Assay solved the puzzle and got real content back, which turns “it challenged for payment” into “it actually delivers” at no cost — and you can reproduce it from the endpoint list.

List the 12 you can call for nothing

Also in utilities

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