Agent directory
Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.
Why this order?
api.tag-per-track.cloud
Tag-per-Track: Agentic-First Musical Audio Analysis API. Extracts BPM, Key, Mood, Genres, Instruments AND Lyrics from audio URLs.
x402-taskmgmt-poc.theliminalguy.workers.dev
Computed next-actions plan: unblocked tasks, blocked tasks + reasons, critical path
signalsfeed.com
Economic indicators and real-time macroeconomic data API for AI agents. Covers GDP, CPI, inflation, unemployment, interest rates, treasury yields, Federal Reserve and central bank policy, commodities, equities, AI, and semiconductors. Struc…
x402-realestate-poc.theliminalguy.workers.dev
Computed sold-price summary for a UK postcode (count, min/max/median/avg price, date range, property-type breakdown), derived from HM Land Registry Price Paid Data
agentkit0.com
Fetch any URL and return clean text, title, description, Open Graph tags, canonical, favicon, headings, word count, reading time. Ideal for LLM agents building summaries or doing research. Edge-cached 5min. POST JSON { url, maxTextLen? }.
revert.wtf
Paid hosted deterministic explanation for EVM/RPC/wallet/UserOperation/x402 errors. Send raw pasted error JSON, text, or revert bytes.
timecapsule.0000402.xyz
Pay $0.05 USDC to seal up to 100 KB of text until a future date. Content is inaccessible via GET /open/{token} until unlock_at passes. An optional label is visible before unlock via GET /status/{token}. Max unlock date: 10 years from now. N…
numberintel.dev
Phone number static intelligence: E.164 normalization, format validity, NANP plausibility checks, geography, timezones and current local time for any US/CA number.
agent-card-validator-mcp.mtree.workers.dev
Paid agent card and well-known validator route for autonomous agents. Returns JSON with provenance, route-specific evidence, and machine-readable fields. Price 0.03 USDC on Base via x402. Demo/preview: https://agent-card-validator-mcp.mtree…
ai-agent-hub-1.onrender.com
Fetch a URL and extract structured data (title, links, images, or metadata)
clearcut.agentic.clawca.sh
Removes the background from an image URL and returns a hosted transparent PNG URL.
deposit.now
dev.gavedu.com
api.seerium.xyz
News prediction market API and crypto news feed for agents. Matches global headlines to Polymarket questions, catalysts, and market context.
lex.chainverdict.xyz
Scan a block of text (brief, memo, agent draft), extract every citation, structurally check each, and return a fabrication risk flag with per-citation verdicts.
api.bakebakebake.no
Buy the next Machine Relics Genesis ERC-721 on Base Sepolia. Pay test USDC over x402; the NFT is minted exactly once per accepted payment signature.
api.posttosource.com
Convert a Twitter/X, LinkedIn, Medium, Substack, Beehiiv, or public Notion page URL into clean markdown.
api.unland.dev
kronos.forgemesh.io
protocol-tvl.hergertsynthora.com
Total Value Locked for any DeFi protocol, per-chain breakdown, historical trend via DefiLlama. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.
endpoint-intelligence-edge.ldbertoldi.workers.dev
Perform fresh TCP service identification against a public IP address or hostname and port. Returns protocol, detected service, software product, version and CPE information where observable.
avt-x402.ttsempelis.workers.dev
AV/IT device integration facts for AI agents writing drivers and integrations: control protocol family, transport, TCP/UDP port, connection notes and field-tested gotchas for professional audio-video, lighting, shading and network devices (…
safe-to-trade.hergertsynthora.com
Pre-trade go/no-go verdict in one signed x402 call. 0.03 USDC on Base.
api.stackgoai.com
Extract structured public business contact information from any public business website. Returns company name, emails, phone numbers, social profiles, postal addresses, and contact pages as structured JSON. $0.05 per request via x402 on Bas…
tempfile.0000402.xyz
Pay $0.02 USDC to store a file for 7 days. Send filename, optional content_type, and base64-encoded file bytes as JSON. Max file size: 10 MB. Returns a token and a stable GET URL. Network: Base Mainnet. Each request stores one file and retu…
www.moltbillboard.com
walcert.globalscoreagent.com
Grade wallet portfolio quality (usable vs spam/dust, concentration, tiers) A-F. POST wallet_address; signed certificate. $0.05 USDC.
energybilltoolkit.co.uk
Place Distance tool: Search for places by name — returns coordinates, population, country, and admin region.
api.greyridgesignals.ai
Token security / honeypot detector for a Base mainnet ERC-20: EIP-1967/1822 proxy + upgradeability detection, bytecode dispatcher scan for mint/pause/blacklist/fee-setter/ownership selectors, owner() renouncement check, and a live eth_call …
x402-dataviz-poc.theliminalguy.workers.dev
Render a bar/line/area chart to SVG (v2 discovery probe)
music.jamesbpollack.com
Search the James B. Pollack music catalog by mood, BPM, key, year, or similarity
reg.chainverdict.xyz
Structural check of a content-credential manifest: claim generator, assertions, the c2pa.actions history, whether a digitalSourceType actually declares trained-algorithmic media, and whether it is signed at all. Does not verify the signatur…
api.verifyproceed.com
Policy-driven pre-execution decision for autonomous agents, based on custom verification checks.
signal.keelbase.io
Complete latest daily Keelbase Signal records and full synthesis.
byshovel.com
Submit a project to ByShovel for a custom research / data-acquisition quote. Lands in the same intake queue as the web form.
jsonrecon.com
Return the Schema.org structured data already published on a public web page. Navigation-only results are marked low information so agents can choose Full extraction. $0.005 USDC per successful request on Base. Call /check before paying. Pa…