STAGINGThis is a preview of nitrograph.com. Actions here hit the production API.
Catalog

Every agent-payable API.

The companies you know, and thousands of endpoints your agent will discover. The catalog groups the network's 25,000+payable services under the companies that operate them — one company row can carry many service endpoints. Placement can't be bought.

All APIs

21,753 APIs
APICompanyCategoryPrice / callStatus
HALOWERK Agent Tools
Turns SenML (JSON or CBOR) and LwM2M TLV into one record shape: resolved name, unit, absolute timestamp, typed value. Optionally puts every series on a shared time axis with a chosen interval and fill rule (last value, bucket mean, linear). Works only on the payload you pass: no device is contacted, nothing is stored, the same request returns the same bytes. TLV carries no type on the wire; unmapped resource ids come back as opaque base64 with a warning instead of a guess.
halowerk.com-$0.002listed
HALOWERK Energy
Aktuelle CO2-Intensität des deutschen Strommix.
halowerk.com-$0.001listed
HALOWERK Energy
Cheapest end-to-end x402 purchase test. Always returns a 402 challenge without payment and the current full NegPrice decision after a valid USDC payment.
halowerk.com-$0.001listed
HALOWERK Energy
Battery, EV, and trading agents buy this endpoint to receive calibrated 2h/4h/6h negative-price probabilities, reviewed threshold profiles and an executable response policy.
halowerk.com-$0.001listed
HALOWERK Energy
Trading and dispatch agents buy this endpoint to obtain the current German EPEX spot price for immediate decisions.
halowerk.com-$0.001listed
HALOWERK Europe Land
Combined share of permanent water, herbaceous wetland and mangrove classes. The service evaluates a 60 metre local analysis grid around one coordinate and returns standardized units across all 30 covered countries.
halowerk.com-$0.003listed
HALOWERK kettenwerk
Checks one address on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB Smart Chain against the open verification registry and against the chain itself. For a proxy the answer is deliberately split in two: whether the proxy is verified says almost nothing, whether the implementation it currently points to is verified is the real question, and both are reported separately with the implementation address read from the EIP-1967 storage slot, the EIP-1167 clone pattern or an implementation() call —
halowerk.com-$0.004listed
HALOWERK marktwerk
Returns the visible order book of Binance, Coinbase, Kraken, OKX or Bybit for one BASE/QUOTE pair. Levels come as [price, size] with bids descending and asks ascending. depth[] states how much turnover sits within 0.5, 1 and 2 percent of the mid per side, in the quote currency, and additionally as depth_usd where the quote is a US dollar unit. group_bps folds levels into price bands whose price is the size weighted average of the band, for agents that do not want a thousand rows. The exchange up
halowerk.com-$0.002listed
HALOWERK marktwerk
Reads the public perpetual data of Binance USDⓈ-M Futures, Bybit linear and OKX swaps for one BASE/QUOTE pair. Settlement intervals differ per exchange and per contract, so annualized_pct is only computed after normalising to the interval that exchange actually uses, and the formula is part of the answer. current_rate and predicted_rate are strictly separate: where an exchange publishes no forecast, predicted_rate stays null and the reason is named instead of reusing the current rate. next_settl
halowerk.com-$0.002listed
HALOWERK marktwerk
Answers the timing question an agent has before it schedules anything against a regulated exchange: is the main session running, and if not, when does it start. Covers XETR, XFRA, XNYS, XNAS, XLON, XPAR, XAMS, XSWX, XTKS and XHKG with pre trading, main session, post trading, half days and the holidays of 2026 and 2027. Time zones are resolved through IANA names and Intl at the queried instant, never through a fixed offset to UTC, because summer time starts and ends on different dates in the Euro
halowerk.com-$0.002listed
HALOWERK marktwerk
Returns the raw public trade tape of Binance, Coinbase, Kraken, OKX or Bybit for one BASE/QUOTE pair, oldest first, exactly as the exchange reports it — no smoothing, no merging of prints. side is the side of the aggressor: reported directly by Kraken, OKX and Bybit, derived from the maker flag at Binance, and inverted from the maker side at Coinbase; side_source names which case applies. Where an exchange does not publish it, side is "unbekannt" and side_inferred stays false rather than guessin
halowerk.com-$0.002listed
HALOWERK x402werk
Asks every known facilitator what it supports and measures how long that answer takes. Reachability, supported chains, supported assets, supported schemes and the current response time are measured live on every call. Limits, and they are the important part: error rate over 24 hours, uptime over 7 days and latency percentiles CANNOT be delivered. They require a series of own measurements every few minutes, and this service keeps no such series - a single call cannot produce a p95. Those fields s
halowerk.com-$0.003listed
HALOWERK x402werk
Checks vouchers of a payment channel by computation only - nothing is ever claimed, redeemed or refunded. Signatures are verified cryptographically against the address each voucher claims to be signed by, in EIP-712 form when the typed data is supplied, otherwise as a plain message signature. Double spending is the expensive case and is checked in full: every voucher id occurring more than once is reported with all its occurrences and whether the duplicates agree on the amount. Sums are added up
halowerk.com-$0.006listed
HMAC data
Compute a keyed HMAC of some data with a secret key — the standard way to sign and verify webhooks (Stripe, GitHub, etc.) and API requests. Data and key may each be utf8/hex/base64/base64url; the tag is returned as hex/base64/base64url.
openverbs.com-$0.002listed
HMAC of a message under a key
HMAC of a message under a key — Genesis402 / UnyKorn Operator Network
unykorn.org-$0.002listed
HOTP (counter-based)
Generate an RFC 4226 counter-based HMAC one-time password from a base32 secret and counter. Configurable digits (6–10, default 6) and algorithm (SHA1/SHA256/SHA512, default SHA1). An invalid base32 secret is a clean 400.
openverbs.com-$0.004listed
HS Code Suggest
Map a short product description to likely HS chapter/heading hints (electronics, apparel, coffee, pharma, …). Keyword table only — not a binding customs classification; confirm before filing.
com.tr-$0.005listed
HTML Named Decode API
Call when an agent needs text decoded with html-named. No network and no LLM. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/html-named-decode first.
syntexa.ch-$0.008listed
HTML Named Encode API
Call when an agent needs text encoded with html-named. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/html-named-encode first.
syntexa.ch-$0.007listed
HTML Numeric Decode API
Call when an agent needs text decoded with html-numeric. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/html-numeric-decode first.
syntexa.ch-$0.01listed
HTML Numeric Encode API
Call when an agent needs text encoded with html-numeric. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/html-numeric-encode first.
syntexa.ch-$0.009listed
HTML Sanitize API
Call when an agent needs HTML sanitized to an allowlist of tags and safe URLs. No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/html-sanitize first.
syntexa.ch-$0.003listed
HTML To Markdown API
Convert an HTML document to clean Markdown for LLM ingestion: strips scripts, styles and navigation chrome, preserves headings, lists, tables and links. Deterministic for identical input.
chainverdict.xyz-$0.002listed
HTML To Md API
Call when an agent already has HTML and needs clean markdown. No network. Optional url is a base for relative links only. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/html-to-md first.
syntexa.ch-$0.002listed
HTML To Md API
Convert a supplied HTML string into deterministic, LLM-ready Markdown. Preserves headings, links, lists, emphasis, and code without fetching a URL or invoking an AI model. Input is bounded to 2,000,000 characters.
benlab.download-$0.005listed
HTML To Text API
Call when an agent needs HTML converted to plain text (scripts and styles removed). No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/html-to-text first.
syntexa.ch-$0.001listed
HTML entity decode
Decode HTML entities (named, decimal and hex numeric references) back into plain text.
openverbs.com-$0.002listed
HTML entity encode
Encode text to HTML entities so it can be safely embedded in markup. By default uses hex numeric references; set useNamedReferences for named entities (&, ©) or encodeEverything to encode every character.
openverbs.com-$0.002listed
HTML to PDF
Render a URL or raw HTML string to PDF. Returns pdf_base64 (base64 PDF; decode to get raw bytes) and page_count. Provide url OR html, never both. Supports format (A4/Letter/Legal), landscape boolean, and margin settings (top/bottom/left/right in CSS units). Use for invoices, reports, or printable document generation.
agentsvc.io-$0.0045listed
HTTP Get API
SSRF-safe public GET with status, headers, and size-capped JSON/text body for agent tool use
vendsdk.com-$0.004listed
HTTP Head API
Public URL status, latency, and response header subset for uptime and health agents
vercel.app-$0.002listed
HTTP Head API
Public URL status, latency, and response header subset for uptime and health agents
vendsdk.com-$0.002listed
HTTP Headers API
Call when an agent needs response headers from an SSRF-safe HEAD or GET of a public URL. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/http-headers first.
syntexa.ch-$0.003listed
HTTPX Declared dependencies
HTTPX Declared dependencies: Live PyPI declared dependencies for HTTPX. Package name can be overridden.
datapackvibe.com-$0.01listed
HTTPX Latest release summary
HTTPX Latest release summary: Live PyPI latest release summary for HTTPX. Package name can be overridden.
datapackvibe.com-$0.01listed
HTTPX Recent release history
HTTPX Recent release history: Live PyPI recent release history for HTTPX. Package name can be overridden.
datapackvibe.com-$0.01listed
Hacker News Full Archive Search API
Hacker News full-archive search: stories, comments, Show HN and Ask HN with points, comment counts and URLs
hf.space-$0.005listed
Hacker News Search
Search Hacker News stories and comments by query, sorted by relevance or date (Algolia HN).
24klabs.ai-$0.002listed
Hacker News Search API
Hacker News search: stories or comments, by relevance or recency — Genesis402 / UnyKorn Operator Network
unykorn.org-$0.002listed
Hacker News front page right now
Hacker News front page right now — Genesis402 / UnyKorn Operator Network
unykorn.org-$0.001listed
Hackernews API
Delivers real-time trending technology articles, developer discussions, and venture announcements directly from HackerNews.
dt0ur.online-$0.05listed
Hallucination Rate API
Tokenizes each claim and its supplied evidence, removes a small declared English stop-word list, and reports the fraction of unique claim tokens present in evidence. Coverage below a supplied threshold is flagged. This is lexical grounding screening only: overlap does not prove truth, low overlap does not prove hallucination, and the service does not retrieve or validate evidence.
halowerk.com-$0.004listed
Hamming distance
Hamming distance — the number of positions at which two EQUAL-LENGTH strings differ — plus a normalized similarity. Strings of unequal length are a clean 400.
openverbs.com-$0.004listed
Handshake API
Generate a random handshake sequence (numbers and symbols) for secure connections.
vercel.app-$0.001listed
Harvest Window API
Adds simple degree-days from caller-supplied daily temperatures to an existing accumulation, then marks days that meet a supplied maturity threshold, crop-moisture interval and maximum rain constraint. It does not obtain a forecast, model crop physiology, inspect a field or guarantee harvestability.
halowerk.com-$0.003listed
Hash A Text With Sha 256, Sha 384, Sha 512 Or Sha 1 API
Hash a text with SHA-256, SHA-384, SHA-512 or SHA-1: hex and base64 digests, for checksums, deduplication and content fingerprints.
manylives.me-$0.001listed
Hash API
Compute SHA-256, SHA-512, SHA-1 or MD5 checksum for UTF-8 text and return hex plus Base64 digests. Use for compute sha256 checksum, integrity verification, content fingerprints, cache keys, deduplication and agent pipelines.
railway.app-$0.001listed
Hash API
Computes a SHA-256, SHA-512, or MD5 hash digest of provided text.
dt0ur.online-$0.01listed
Hash Digest
Compute cryptographic digests of a string. POST {"input":"...","algorithms":["sha256"]} and receive one hex digest per requested algorithm. Supports sha256, sha512 and keccak256. Deterministic, no storage, no upstream calls.
onrender.com-$0.001listed
Hash Text API
Hash text: keccak-256 (Ethereum) and SHA-256, plus byte length. POST JSON {"text": "…"} up to 20,000 characters. Pure computation, nothing stored, no cache.
higgsfield.app-$0.001listed
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