Check execution risk before placing a crypto trade. Submit a visible order book, trade side and notional; receive PASS, CAUTION or AVOID with estimated slippage, spread, fill ratio, visible liquidity and depth utilization. Built for autonomous trading agents that need a fast pre-trade liquidity and execution-risk check. Read-only: never places orders, accesses exchange accounts or gives investment advice.

corpusAI Cloud Pricing: Latest rental quotes for one GPU model across neo-clouds, marketplaces and other clouds.

Research brief for one crypto pair in a fixed JSON schema (brief-1.0): Kronos lean and 80% range, 48h news tone, realized volatility, 1-day VaR and expected shortfall, max drawdown, correlation to BTC, a news/forecast conflict flag and a short guarded rationale. Works for scheduled and on-demand pairs. Errors are never charged. Informational, not financial advice.

corpusAI Cloud Pricing: Every raw spot price-change event of a region for one UTC day, as a gzip TSV file.

Hacker News and Bluesky opinion split, NOT a poll: how public posts divide on a question. GET q; optional sides (2-4, default yes,no), window (1-30d). Returns JSON: per-side share with 95% interval and n, counts per source, links only (no text or usernames; Bluesky links include the account's public ID, DID), caveats. Refuses elections, health and a named person's conduct. Under 30 decided posts, refusals and errors: not charged.

Fusion Model. Internal reviewers examine the conversation and available tool results, then a final model returns the next OpenAI-compatible response, including tool calls when tools are provided. Supports repeated multi-turn calls, client-executed tools, and JSON responses. Internal review notes are not returned.

Argentine peso dollar rates in one GET with no parameters: oficial, blue, MEP, CCL, tarjeta and cripto with buy and sell quotes from DolarApi (open source, MIT), plus the gap percent between the crypto dollar and the official rate, source URL, read time and provider update time. Use this when an agent prices, converts or reports anything in Argentina and needs the real dollar, not only the official one. JSON, no model inference. Free sample at /api/dolar-ar/sample.

Wikipedia article summary: description, plain-text extract and canonical url. ?title=Bitcoin

Read any public web page as clean readable Markdown for RAG and LLM pipelines — main article text with nav/ads stripped, plus title. The reader/scraper building block for agents. ?url=https://example.com&max_chars=20000

corpusAI Cloud Pricing: Raw spot price-change events for one instance type.

Retrieve a stored secret by id + access token. Returns the decrypted value, label and read count.

Delete a stored secret by id + access token.

Time-boxed dead drop: like drop, but the value survives reads until it expires (TTL up to 7 days, default 24h), then is destroyed automatically.

Use when an agent must price an LLM call or pick the cheapest model. Input: model (up to 5, comma list) plus optional input_tokens, output_tokens, requests; or no model plus mode, provider, min_context, capabilities (vision, function_calling...). Output: JSON USD per 1M input/output tokens, cached/batch prices, context window, provider, capabilities, cost estimate or cheapest ranking, as_of + source commit. Example: ?model=gpt-4o&input_tokens=12000&output_tokens=800

Fact-check verdict written by Claude Haiku 5.5 (Anthropic) from real web sources: supported/contradicted/mixed/unverifiable, each source with its stance (supports/contradicts/neutral). Answer in a few seconds. Try GET /fact-check/sample. Independently monitored: lumierepaycheck.org/e?url=https://x402.agentindex.world/fact-check

Batch EU VAT validation via VIES (up to 100 per request)

corpusAI Cloud Pricing: One day's fixing for a ticker: median USD per GPU-hour of eligible quotes, with low, high and count.

Returns a per-day download time series for an npm package over a period from keyless api.npmjs.org — the raw signal for trend and growth-rate detection. Lets autonomous agents compute momentum/decline and feed agent-to-agent dependency-selection scoring. Ranking surface for trajectory. First call FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

corpusAI Cloud Pricing: Full monthly history for one instance type, back to 2014 for legacy AWS types.

Tool results (MCP servers, APIs, search, file reads) are untrusted content the agent re-reads. Detects a result that gives orders to the agent, strays from what the tool should return or asks to send data (tool poisoning). Returns allow, review or block.