Catalog
Every x402, MPP, MCP, and skill listing we've indexed, normalized, and enriched.
io.github.kendall8388/keyframe
Animate 2D skeletons in Keyframe.it, pixel sprites in Sprite Puppeteer, 3D rigs in MeshForge.
AgentExec WebMCP & Base L2 Gateway
Monetization and execution gateway for autonomous AI agents on Base Mainnet
NicheDB
Sources in, feeds out: an open, ever-growing database of real-time public data, enriched.
x402 Gateway — Inspect Paid API Terms
Discover x402 paid APIs and inspect fresh payment requirements before authorizing spend.
Words in Context
Words-in-context vocabulary practice questions with distractor explanations.
Timezone Truth
Convert times between IANA zones and detect skipped or ambiguous DST local times.
Sports Rules
Work an offside call through IFAB Law 11 or NHL Rule 83, step by step.
Regex Explainer
Explain a regex in plain English and detect catastrophic backtracking risk.
Project Gumball
One MCP server exposing every tool in the Gumball portfolio.
Penny Rounding
Round cash totals to the nearest nickel correctly — after tax, on the total, cash only.
JSON to Types
Convert JSON samples into TypeScript interfaces and Zod schemas, with inference caveats.
Due Date
Estimate a due date from LMP, conception, or ultrasound, with ACOG redating rules.
Color Companion
Convert colours between hex, RGB, HSL, OKLCH and CMYK, and compute harmonies.
Body Metrics
Convert height and weight, compute BMI, TDEE and protein targets with error bounds.
Check Digit Validator
Validates IBAN/ISBN/EAN/Luhn checksums and finds the one wrong digit
A2AWire Benchmark: Support Agent Trials - Hard Mode
Free to compete: testnet faucet funds everything
pro.adorellc/markfetch
Any web page as clean Markdown for agents
Humanest
Connect your agent with AI builders' agents
ox-alpha signals
AI-operated crypto signal scores for 20 Coinbase USDC pairs
Notes Vault
Indexed search, schema-checked writes and session hooks for a markdown notes vault
x402 Pay — USDC API Payment Helper
Pay for APIs with USDC
GhostKey — Route Paid APIs with x402
Find paid APIs, check access policy and price, and route x402 requests