The STALL

How to connect

• action-receipt

  Issue a self-verifying action receipt: sha256-chained record binding actor, action, subject, and result hash to a timestamp and nonce. Returns the receipt plus the exact recompute recipe so any third party can verify it offline. Durable proof for agent actions, dispute defense, and audit trails.

• activist-investor-intel

  SEC EDGAR Schedule 13D/13G beneficial ownership disclosures for US equities. Mode 1 (ticker): returns all 5%+ shareholders for a company — activist funds (13D) vs passive holders (13G), with ownership %, share count, and EDGAR filing URL. Mode 2 (recent): returns market-wide Schedule 13D disclosures in the last N days. Authoritative US government data, updated within minutes of SEC acceptance.

• address-intel

  On-chain intelligence for any Base network wallet. Classifies EOA vs contract, profiles USDC transfer activity over a configurable block window, scores payer diversity (distinct counterparties / total transfers, 0–100), detects sybil vanity-lookalike address clusters (same first-4 + last-4 hex chars), identifies x402 facilitator SKIM legs (same-block receive+re-send), and assigns a risk label (ORGANIC / ORGANIC_LIKELY / SEEDER_PATTERN / FACILITATOR_SKIM / SYBIL_CLUSTER / FRESH_WALLET / INACTIVE)

• address-security

  Wallet/address security and reputation check. Detects phishing, sanctions, cybercrime, money laundering, dark-web activity, and blacklisted wallets using GoPlus Labs + SlowMist + BlockSec data. Returns risk score (0-100) and per-flag breakdown. Supports Ethereum, Base, BSC, Polygon, Arbitrum, Optimism, Avalanche, and more.

• agent-access-check

  Checks whether a website is accessible and agent-friendly. Fetches robots.txt, .well-known/ai.txt, and sitemap.xml; inspects HTTP headers (CORS, CSP, rate-limit); and returns a readiness verdict. Useful for agents that need to decide whether to scrape, crawl, or interact with a domain before committing to a workflow. Returns allowed/blocked status, disallowed paths, crawl delay, AI-specific rules, and sitemap URL if present.

• agent-kya-score

  Know Your Agent (KYA) trust score for any EVM wallet. Returns a 0–100 score, tier (trusted/verified/unknown), sanctions screening result, per-dimension score breakdown (wallet age, activity, sanctions, ERC-8004 identity, KYB, tx history, trust bond, endpoint quality), on-chain attestations (Coinbase KYC, Gitcoin Passport, USDC balance), wallet stats (balance, tx count, estimated age), and per-transaction spending limits. Use before accepting payment from an agent or before dispatching a sub-agen

• agriculture-brief

  AI-synthesized US agricultural commodities market intelligence brief. Assembles 9 real-time signals from Yahoo Finance: corn futures (ZC=F), wheat (ZW=F), soybeans (ZS=F), live cattle (LE=F), lean hogs (HE=F), coffee arabica (KC=F), cotton (CT=F), agribusiness sector ETF (MOO), and Deere & Co (DE, farmer confidence proxy). Returns 52-week context, soy/corn ratio, wheat/corn spread, grain-regime and livestock-regime classification, plus a 200-word GPT-4o-mini narrative covering supply risk, domin

• ai-image-gen

  Generate an AI image from a text prompt using DALL-E 3. Returns a public URL for the image (hosted for 1 hour) plus the model's revised prompt. Supports vivid or natural style, and three aspect ratios: square (1024×1024), portrait (1024×1792), or landscape (1792×1024). $0.080/image — 20% below closest x402 competitor. Output is base64-encoded PNG or a direct URL depending on response_format.

• ai-pipeline-brief

  AI pipeline architecture brief: finds the best HuggingFace models for your ML task, validates or generates your cron schedule, and synthesizes a deployment guide — all in one call. Serves AI developers and agent builders who need model selection + scheduling together. Input: task description (e.g. 'classify customer sentiment hourly from social media feeds') plus optional HuggingFace pipeline task filter and schedule. Returns: top model recommendations, validated cron expression, pipeline steps,

• air-quality

  Real-time US AQI and pollutant readings for any lat/lon. Returns current AQI with category label (Good/Moderate/Unhealthy/Hazardous), PM2.5, PM10, nitrogen dioxide, ozone, carbon monoxide, dust levels, and UV index. Data from CAMS (Copernicus Atmosphere Monitoring Service), updated hourly. Use for health advisories, outdoor event planning, environment-sensitive routing, or regulatory compliance checks.

• analyst-ratings

  Wall Street analyst consensus and price targets for any US equity. Returns buy/hold/sell breakdown, mean recommendation score (1=Strong Buy, 5=Strong Sell), analyst count, and price target range (low/mean/median/high) with upside-to-target. Free Yahoo Finance data, no API key. Complements us-stock-price and equity-technicals with the analyst conviction layer.

• analyst-upgrades

  Analyst rating change history (upgrades, downgrades, initiations) for any US equity. Returns each firm, action, from/to grade, and date — up to 365 days back. Computes net sentiment (upgrades minus downgrades): positive = bullish momentum building. Pairs with analyst-ratings (current consensus) and earnings-estimates (forward EPS). Yahoo Finance, no API key.

• app-store-intel

  iOS App Store competitive intelligence: search apps by keyword, look up a specific app's profile (ratings, freshness, install tier, release notes), or fetch top-charts for a category (finance, productivity, games, etc.). Free iTunes API, no auth required. Covers the App Store gap in the developer-ecosystem cluster alongside npm-trends, pypi-intel, and github-intel.

• arxiv-intel

  Search arXiv preprints by query, filtered by field (title/abstract/author/all) and category. Returns title, authors (up to 6), abstract (first 600 chars), arXiv ID, PDF link, publish date, and subject categories. arXiv is the canonical source for AI/ML, CS, physics, math, and quantitative biology preprints — typically months ahead of peer-reviewed journals. Useful for AI research agents, literature scouts, competitive technique tracking, and grant-writing support. No API key required.

• audio-transcribe

  Transcribe audio from any publicly accessible URL using OpenAI Whisper. Supports mp3, mp4, m4a, wav, webm, ogg, flac, and wma up to 24 MB. Returns the full transcript text, detected language, and estimated duration in seconds. Optionally accepts an ISO 639-1 language hint to improve accuracy. Useful for processing voice memos, meeting recordings, podcast snippets, interview clips, and audio attached to social media. Undercuts orbisapi.com audio-transcription-api by 24%.

• aviation-weather

  Aviation weather (METAR + TAF) for any airport. Returns current conditions (temp, wind, visibility, ceiling, flight category VFR/MVFR/IFR/LIFR) plus 24–30 hour TAF forecast periods. Accepts IATA (JFK) or ICAO (KJFK) codes. Source: NOAA Aviation Weather Center — official, real-time, no API key.

• balance-sheet

  Quarterly or annual balance sheet history for any US public stock. Returns cash & equivalents, short-term investments, total assets, total debt, net debt, total liabilities, stockholders' equity, book value, retained earnings, goodwill & intangibles, tangible book value, working capital, and shares outstanding. Quarterly default (up to 8 periods); annual returns up to 4 fiscal years. Critical for EV calculation (market cap + net debt), leverage screening, and distress analysis. Pairs with income

• base-season

  Base chain season snapshot: total chain TVL, top 10 protocols by Base-native TVL, category breakdown, 7d trend, and top Base ecosystem tokens by market cap. No input required — agents use this for pre-trade orientation before DeFi, lending, or liquidity calls on Base.

• block-intel

  Returns block header data (number, hash, timestamp, gas used/limit, base fee, tx count, validator address) for any block on Base, Ethereum, or Arbitrum. Accepts block tag (latest/safe/finalized) or number. Free-RPC alternative to skills.onesource.io at 33% lower price — $0.002 vs $0.003.

• bonds-brief

  AI-synthesized fixed-income market brief. Assembles 9 signals: Treasury yield curve (3M/5Y/10Y/30Y from Yahoo Finance CBOE indices), 2Y yield + 10Y TIPS real yield + 10Y breakeven inflation (FRED), and HY/IG credit spreads (FRED ICE BofA). Returns 2Y-10Y inversion signal, real rate environment, credit regime, composite rate_environment classification (RECESSION_RISK_HIGH/INVERTED_CURVE_NORMAL_CREDIT/TIGHT_FINANCIAL_CONDITIONS/ACCOMMODATIVE/NEUTRAL/etc.), and ~200-word GPT-4o-mini briefing coveri

• breadcrumb-extractor

  Extracts structured breadcrumb navigation from a URL. Returns domain, ordered path segments with human-readable labels, query parameters as key-value pairs, and a formatted breadcrumb trail string. Identifies numeric IDs vs. named path segments. Pure URL parsing — zero external calls. Useful for agents that process sitemaps, navigation menus, or need to understand page hierarchy.

• btc-game-theory

  Bitcoin mining game theory and systems dynamics in one call. Returns: selfish-mining profitability threshold (Eyal-Sirer), 51%-attack electricity cost estimate, fee-vs-subsidy revenue split, difficulty epoch trajectory (expansion / contraction / neutral), Nash-equilibrium state for honest mining, and current epoch progress. Sourced from mempool.space and CoinGecko — no API key required. Use for miner-incentive analysis, network security assessment, and pre-investment regime detection.

• btc-miner-econ

  Bitcoin mining economics and fee-market game theory via mempool.space. Returns current fee rates and pressure tier, miner revenue split (subsidy vs fees), next difficulty adjustment (direction, magnitude, blocks remaining), mining pool concentration (top-3 hashrate share), and mempool backlog size. Useful for agents reasoning about BTC transaction timing, miner incentive structures, or on-chain network health.

• btc-systems-theory

  Seven-lens systems theory analysis of the Bitcoin network. Returns: (1) difficulty feedback loop state + regulator lag, (2) mempool stock-flow ratio and queue depth, (3) confirmation delay at economy/priority fee tiers, (4) fee nonlinearity index and hash-rate growth curvature, (5) Nakamoto coefficient (min pools for 51% consensus), (6) self-organization score for fee market equilibrium, (7) HHI mining concentration index and decentralization grade A–F. Sourced from mempool.space — no API key re

• capital-allocation-score

  Capital allocation quality assessment for any US public company. Returns ROIC (Return on Invested Capital), FCF yield, total shareholder yield (dividends + buybacks), CapEx intensity, and reinvestment rate. Synthesizes these into a letter grade (A–F) that answers: is management good at deploying the capital they generate? Designed to chain after equity-fundamentals and wacc-calculator to qualify management quality before setting DCF terminal growth assumptions.

• cash-flow-statement

  Full cash flow statement history for any US public stock — operating, investing, and financing sections. Returns: D&A, stock-based comp, working capital changes, operating CF, capex, acquisitions, investing CF, debt issuance/repayment, share buybacks, dividends paid, financing CF, free cash flow, beginning/ending cash, owner earnings (net income + D&A – capex), and cash conversion ratio. Quarterly default (up to 8 periods); annual returns up to 4 fiscal years. Completes the financial statement t

• cdp-market-depth

  Real-time Coinbase order book depth and market microstructure for any crypto trading pair (BTC-USD, ETH-USD, SOL-USD, etc.). Returns best bid/ask spread, 24h price stats (high, low, volume, % change), top-N bids and asks with cumulative notional, order pressure ratio (bid vs ask volume), and the last 5 executed trades. Sourced direct from Coinbase Advanced Trade API — exchange-native, not CoinGecko aggregator delay. Ideal for pre-execution analysis, spread-cost estimation, and market timing.

• chain-pulse

  Returns an Ethereum block header + current stablecoin depeg status in one call. Collapses the eth-block → stablecoin-watch 2-hop chain. Block fields: number, hash, miner, timestamp, gas_used, tx_count. Stablecoin fields: symbol, price, peg_deviation, depeg_status, composite alert level. Supports Ethereum, Base, Polygon, Arbitrum. Free upstreams (DRPC + DeFiLlama), no API key required.

• changelog-generate

  Converts commit messages to a keep-a-changelog release block. Groups feat/fix/perf/docs/security commits into Added/Fixed/Changed/Security sections. Returns versioned markdown or structured JSON. No API key — pure transform.

• chromatic-dispersion

  Fiber optic chromatic dispersion calculator. Computes dispersion coefficient D(λ) in ps/(nm·km), accumulated dispersion (ps/nm) over a fiber span, and dispersion slope for SMF-28, NZDSF, DSF, LEAF, DCF, and ULLSF fiber types. Optionally sweeps a wavelength range (C-band, L-band, or custom). Pure math — instant, zero API calls. Useful for optical network design, DWDM link budget, and dispersion compensation planning.

• city-lookup

  Search airports and cities by keyword, IATA code, or city name. Returns IATA/ICAO codes, coordinates, country, and timezone for each match — useful for travel planning, routing, and geographic enrichment.

• classic-novels

  Looks up classic and contemporary books by title, author, or ISBN via Open Library (748M+ editions). Returns publication year, subjects/genres, page count, cover images, and links to read online via Project Gutenberg or Internet Archive. Useful for research agents, reading recommendation workflows, literature analysis, and bibliographic data enrichment.

• clinical-trials

  Search ClinicalTrials.gov for clinical studies by condition, intervention, or keyword. Returns phase, status, enrollment, sponsor, and dates. NIH primary source — no markup. $0.005/call.

• code-api-surface

  Analyzes a code snippet and returns its API surface: HTTP routes (method + path), exported symbols, and middleware. Supports Express, FastAPI, Flask, Django, Spring Boot, ASP.NET, Rails, Gin. Pure static analysis — no code execution. Returns JSON with routes[], exports[], middleware[], lang, framework, and a plain-English summary. $0.10/call.

• code-test-detector

  Detects testing frameworks and test coverage presence in a code snippet or GitHub repository. For code snippets: identifies test functions, assertions, mocks, fixtures, and frameworks (Jest, pytest, go test, JUnit, RSpec, etc.). For GitHub repos: counts test files vs source files, surfaces config files, and gives a coverage verdict. No code execution — pure static analysis.

• commodity-futures

  Returns live price and intraday metrics for major commodity futures: crude oil, natural gas, gold, silver, copper, platinum, wheat, corn, soybeans, and coffee. Includes price, day high/low, 52-week range, previous close, exchange, and contract name. Filter by commodity name or category (energy/metals/agricultural). $0.010/call — Yahoo Finance free API, no key required.

• company-due-diligence

  AI-agent due diligence on any company. Queries SEC EDGAR for public company data (CIK, ticker, SIC, address, filing history) and optionally analyzes the company website for contact details, social profiles, and legitimacy signals. Returns a structured report with risk flags. Accepts company name plus optional domain.

• company-intel

  Returns SEC EDGAR due diligence data for any US public company by ticker symbol: legal name, CIK, SIC industry code and description, state of incorporation, fiscal year end, SEC filer category, primary business location, and 2-year filing history (10-K/10-Q/8-K counts and most-recent dates). Use before any agent task involving US public company identification, regulatory filing assessment, financial analysis, or industry classification. Free upstream: SEC EDGAR public API (US government data, no

• concentration-risk-score

  Returns a concentration-risk score for an x402 pay_to wallet: HHI, unique payer count, top-payer share, persistence across scans, and a risk tier (LOW / MEDIUM / HIGH / CRITICAL). An agent uses this to assess whether an endpoint is a single-agent dependency before building a workflow that depends on it.

• congressional-trades

  US Congressional stock trades (STOCK Act disclosures). Two modes: supply a ticker to get all congress member trades in that stock (with excess-return-vs-SPY performance), or omit ticker for recent market-wide congressional activity. Returns representative, party, chamber, transaction type, dollar range, dates, and historical performance vs. SPY. Sourced from Quiver Quant's STOCK Act aggregator — no API key required. $0.022/call.

• consumer-brief

  AI-synthesized US consumer health briefing. Fetches 8 FRED signals (Michigan sentiment, retail sales MoM, real PCE, real disposable income, savings rate, total/revolving consumer credit) and uses GPT-4o-mini to produce consumer posture, spending regime, confidence level, savings stress, credit dependency, 150-word narrative, dominant risk, and agent implication. One call collapses 8 FRED lookups + LLM synthesis for retail sector exposure, recession probability, and consumer credit risk.

• content-analyze

  AI-powered URL content analysis. Fetches a URL, extracts the readable article text, and returns structured intelligence: 2–3 sentence summary, key points, named entities with types, sentiment score, topic tags, content type classification, and credibility signals (has author/date/sources). Use for content intelligence pipelines, research synthesis, or automated brief generation. $0.012/call.

• content-moderation

  Classify text (and optional image URLs) for harmful content — hate speech, harassment, self-harm, sexual content, violence, and illicit instructions. Returns flagged status, risk level (NONE/LOW/MEDIUM/HIGH), flagged categories, per-category confidence scores, and an optional AI-generated safe rewrite.

• cot-positioning

  CFTC Commitment of Traders weekly positioning: large speculator (hedge fund) vs commercial hedger net long/short, week-over-week change, % of OI, 4-week trend, and a SPEC_LONG/SPEC_SHORT/NEUTRAL signal. Free CFTC source, updated Fridays.

• country-info

  Country information lookup by name, ISO code (alpha-2 or alpha-3), or capital city. Returns: official name, ISO codes, capital, population, area (km²), region, languages, currencies (code + symbol), borders, calling code, timezones, and flag image URL. Useful for international business agents, geographic enrichment, currency identification, and compliance workflows.

• credit-spreads

  Returns current US corporate credit spreads from ICE BofA indices via FRED (free, no API key): High Yield OAS, Investment Grade OAS, and BBB (lowest IG tier) OAS. Includes HY-IG differential and risk regime classification. Pairs with treasury-yields for complete fixed-income discount rate construction.

• cron-parser

  Parse and explain any Unix cron expression in plain English. Returns human-readable schedule description, field breakdown, and the next N run times (UTC). Supports @yearly/@monthly/@weekly/@daily/@hourly shortcuts. Zero external calls.

• cross-chain-bridge-status

  Live cross-chain bridge availability and route discovery. Given a from/to chain pair, returns all active bridges (Stargate, Across, CCTP, Relay, Squid, etc.), chain metadata, and bridge coverage breadth. Use before any cross-chain transfer or arbitrage to identify available routes. Free — powered by Li.Fi aggregator.

• crypto-brief

  AI-synthesized cryptocurrency market intelligence brief. Assembles 12 real-time signals from CoinGecko (BTC, ETH, SOL, BNB, XRP, DOGE, ADA, AVAX, LINK, UNI, MATIC, ATOM — price, 24h change, market cap, volume) plus the Alternative.me Fear & Greed Index. Returns crypto regime classification and a 200-word GPT-4o-mini narrative covering market sentiment, dominant signal, and agent decision implications.

• crypto-equity-brief

  AI-synthesized cross-market brief combining top crypto movers and equity performance — identifies how crypto and stock markets are moving together or diverging. Returns top crypto gainers/losers, equity prices, global crypto market stats, and a synthesized cross-market intelligence brief: market regime, key themes, risk signals, and standout assets in both markets. One call replaces separate crypto-top-movers + stock-price-multi lookups. Useful for agents doing portfolio monitoring, regime detec

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