Every agent-payable API.

Government reference data series

Government reference data series

Government reference data series

OpenAI's flagship GPT-5.6 tier for complex analysis, coding, and planning

GPT-5.6 Luna — fast, low-cost frontier model (Artificial Analysis Intelligence Index 51.2, GPQA Diamond 91.1%). Best for high-volume chat, classification, extraction, and lightweight agentic loops where latency and cost matter. Limits: 8K input / 2K output tokens per call. OpenAI-compatible request and response format.

GPT-5.6 Sol — flagship frontier model, the most capable tier in the GPT-5.6 family. Best for hard reasoning, complex multi-file code work, long-context analysis, and tasks where accuracy outweighs cost. Limits: 24K input / 4K output tokens per call. OpenAI-compatible request and response format.

GPT-5.6 Terra — balanced frontier model (Intelligence Index 55.0, GPQA Diamond 92.5%, Terminal-Bench Hard 57.6%). Best for everyday coding, multi-step reasoning, and agentic tasks needing more capability than Luna without Sol's cost. Limits: 16K input / 4K output tokens per call. OpenAI-compatible request and response format.

Graded x402 gateway: one MCP endpoint to discover quality-graded x402 services (ranked by real 30-day demand) and call them pay-per-use with prepaid credits. Top up 0.10 USDC per pack; the gateway fronts every upstream payment.

Solana pump.fun coins closest to graduating to Raydium: bonding-curve coins ranked by SOL raised, with approximate bonding progress %, market cap, age, and socials. Send { limit? }. Graduation migrates liquidity to Raydium and often spikes volatility — the classic snipe trigger.

Greatest common divisor. Handy for ratio simplification, scheduling grids, or math agents without local bigint helpers. Returns GCD of two integers as structured JSON. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Grok 4.5 High chat via x402. OpenAI-compatible /v1/chat/completions, streaming supported. Listed as grok-4.5-high. $0.01 USDC per request on Base/Solana mainnet. See GET /x402/v1/models for the full chat catalog.

GTIN / EAN / UPC barcode check-digit validation (GS1 mod-10) for GTIN-8/12/13/14 with type identification.

Pre-execution safety verification for on-chain agent actions. Returns a proceed, wait, or block verdict with a confidence score and per-check breakdown, before your agent executes.

Guess a MIME type from a filename, path, or URL extension — call when guessing MIME type from an extension. Use on text/URLs the agent already holds—adjacent to high-volume extract demand, never advertised as general web or X search. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip, web search, or media generation. Results are ad…

HMAC-SHA256 hex of text with a secret. Call when you sign agent webhook test payloads offline. Returns hex digest for $0.001 USDC via x402 on Base. Local HMAC only—caller supplies secret; not stored. No network, no retention. Results are advisory; the caller owns budgets, auth, and production controls.

HSTS Policy Check: HSTS Policy Check checks HSTS max-age and subdomain directives against caller policy from bounded caller-supplied values without an external provider. Call HSTS Policy Check before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for HSTS Policy Check as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-only…

Scrapes the given URL and returns the raw HTML content of the page.

Scrapes the given URL and returns the raw HTML content of the page.

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.

Convert a supplied HTML string to clean Markdown: strips scripts/style/nav, preserves headings, bold, italic, links, lists, code, and blockquotes. No fetch.

HTML-escape text for safe embedding. Call when you inject agent text into HTML without XSS. Returns escaped text for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

Public URL status, latency, and response header subset for uptime and health agents

HTTP Version Normalize: HTTP Version Normalize normalizes common HTTP protocol version spellings from bounded caller-supplied values without an external provider. Call HTTP Version Normalize before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for HTTP Version Normalize as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-o…

Habit intelligence analysis (USDC on Base).

Habit plan generation (USDC on Base).

Hacker News full-archive search: stories, comments, Show HN and Ask HN with points, comment counts and URLs

Half-Kelly fraction for conservative bankroll growth. Call when agents that want Kelly growth with lower variance. Returns half Kelly fraction as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Hard-wrap text to a column width for $0.001 USDC. Use this when an agent needs wrap text inside a workflow without installing a library or managing an API key. Deterministic first-party execution, structured JSON output, no subscription, and payment only for a successful result.

Harvest URL and DOI citation patterns from text without network access — call when harvesting URL/DOI citation patterns without network. Use on text/URLs the agent already holds—adjacent to high-volume extract demand, never advertised as general web or X search. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip, web search, or med…

Compute md5/sha1/sha256/sha512 (or HMAC with a key) of a string; hex + base64 output.

Hash a string or bytes with multiple algorithms in one call: SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, and keccak-256 (Ethereum). Input as UTF-8, base64, or hex; hex digests out.

Compute cryptographic hashes / checksums of a string or of raw bytes (base64). Returns lowercase hex for each requested algorithm: sha256 (default), sha512, sha1, md5. SHA via native Web Crypto; md5 and sha1 are offered for legacy interop only and flagged — not for security. POST so the input never lands in a URL/log. Verification/checksums only, not a hash cracker.

Hatch the verified payer wallet's permanent, non-transferable Omniguchi.

Global (or per-country) natural-hazard / disaster alert signal (optional ?country=)

Is this tokenized stock safe to buy? Tokenized-equity / RWA check before an agent buys an on-chain US stock. ?symbol=AAPLx or ?address= returns ok/review/avoid + AUTHENTICITY - the REAL issuer token or an IMPERSONATOR? Verified via Backed/xStocks' registry and Ondo's on-chain mint authority. Plus depeg_bps, liquidity, trading_halted, freeze_authority. ?underlying=TSLA compares every verified version across issuers. ?watch=addr1,addr2 returns only what CHANGED.

Is the Govparse Agent Gateway up, and which product datasets does it front? Returns a signed _meta attestation proving the payment-to-attestation pipeline end to end.

Live network health of Robinhood Chain (Ethereum L2 on Arbitrum): latest block, average block time, gas prices, total/today transactions, total addresses, ETH price. No input.

Health Work Packet Builder (CDP-settled mirror) — bounded, non-medical measurement work packet from the 12-Hallmarks-tagged health work library. Findings route to a licensed clinician; nothing diagnoses or treats.

Heartfelt personalized compliment for AI agents. Optional name field.

Get the full set of computed technical indicator signals for a crypto pair as of a market-close date: Ichimoku (TK cross, Kumo breakout, Senkou span cross, edge-to-edge), EMA/SMA price crosses, golden cross, RSI overbought/oversold, ADX trend strength, MACD crosses, and Bollinger Band squeeze. USD and USDT quote variants resolve to the same dataset.

Get the full set of computed technical indicator signals for a crypto pair as of a market-close date: Ichimoku (TK cross, Kumo breakout, Senkou span cross, edge-to-edge), EMA/SMA price crosses, golden cross, RSI overbought/oversold, ADX trend strength, MACD crosses, and Bollinger Band squeeze. USD and USDT quote variants resolve to the same dataset.

HELOC payments: interest-only during the draw period and the amortizing payment when repayment begins (the payment jump).

Deterministic JSON repair for agent tool outputs, with optional JSON Schema validation. Built for tight agent loops at micropayment prices.

Audit a public site for agent/AEO readiness: llms.txt, well-known agent cards, x402 signals, schema.org/JSON-LD, and concrete remediation. Differentiated from cheap SEO meta checklists — focused on agent discovery and machine commerce.

Activation pack for DACH/EU sites: URL preflight + Impressum signals + DSGVO/privacy signals + next_jobs (aeo-dach, site-watch). Ideal first buy for .de/.at/.ch origins.

Probe a peer x402 jobs URL and return a CC0 x402-probe-receipt-v1 (HTTP status, PAYMENT-REQUIRED body/header agreement, latency). Interop helper for agent operators. Does not settle. Keywords: x402, probe, 402, interop, b2b.

DACH-focused agent/AEO readiness: llms.txt, agent.json, x402 surface, hreflang/de hints, Impressum + Datenschutz presence. Complements generic aeo-readiness for .de/.at/.ch sites.

Deterministic cold-outreach policy signals for DE/AT/CH by channel (email, phone, sms, postal): allowed / conditional / prohibited with basis refs. Zero outbound requests. Keywords: outreach, cold-email, uwg, gdpr, deutschland, austria, switzerland. Not legal advice — routing hint for agents only.

Heuristic BFSG / Barrierefreiheit accessibility signals Germany (lang, title, alt, landmarks, labels). URL crawl or HTML-in. Keywords: bfsg accessibility signals, barrierefreiheit, wcag, a11y, deutschland. Not a legal audit or certification.

Checks whether a site publishes /llms.txt and scores basic structure (headings, links, length) for agent discovery readiness. Upsells to aeo-readiness.