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Evidence pack: PDR + anchor status + inclusion proof + verify recipe for one work_hash

Domain-level contact preflight with MX provider, SPF, DMARC and structured risk signals. Does not claim mailbox existence.

Pay or skip on someone else's 402: network, answered, free sibling, one reason

AI Security Guard content scanner. Detects prompt injection, intent drift, and credential exfiltration. $0.0015-$0.024 by size. Full docs: https://aisecurityguard.io/v1/skill

Did this transaction pay USDC on Base to an address? Returns success, confirmations, every USDC transfer in the tx, the total received by `to`, and whether it meets `min`.

Hourly GPU rental mark history for correlation against an RTO, spread, or later spot. when an agent should use this: it needs a past window of smoothed marks, not the latest print alone.

Agent Vetting Bureau — Static security dossier of an MCP server / agent endpoint: endpoints, data flows, network calls, exfil signals, permissions requested, deterministic reputation score. Params: url (http/https).

DDG agent-payable service request

Batch IP lookup for log analysis and fraud review: up to 10 IPv4 or IPv6 addresses per call, 40% cheaper than singles. JSON body {ips:[...]}. Each item returns the owning network, range, country (RDAP) and reverse DNS. Bad items return per-item errors.

Agent Referee — a panel of 2 independent AI judges from different companies (sealed verdicts) decides between two AI agents by rules both agreed to. Both judges must agree, or it's a mistrial sent back to the owners. Each agent pays this to join. Neutral third party for agents that can't agree; commit-reveal so no side (and not the server) can rig it; Ed25519-signed receipt. Step 1: POST /matches

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A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor (/v1/x402-audit) — Audits any remote agent or MCP URL for JSON-RPC compliance, latency SLA, OpenAPI schema, and HTTP 402 settlement headers.

BeCoder tx-decoder — 0.005 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 per call

Public domain DNS, mail configuration and HTTP security headers

Verifiable random integers derived from the public drand League of Entropy beacon. Returns the beacon round, randomness and BLS signature so every value can be independently verified.

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Agent Referee: mediator seat for a multi-option fair draw (mediator pays for everyone)

Read a URL or document and return clean LLM-ready markdown.

Compute percent change and multiple from fromPrice to toPrice. Body: { fromPrice, toPrice }.

Fetch spot prices for up to 20 symbols in one call. Body: { "symbols": ["BTCUSDT","ETHUSDT"] }.

Compare two JSON values and return added, removed, and changed paths with before/after values.

Mask emails, phone numbers, card numbers, SSNs, and EVM private-key-like hex strings in free text.

Encode UTF-8 text to base64 or decode base64 to text. Body: { op: "encode"|"decode", text: "..." }.

SHA-256 hex digest of UTF-8 text. Body: { text: "..." }.

POST /execute -- Execute python3/node code in an isolated, network-less sandbox; returns stdout, stderr, exit code as JSON. No account needed -- pay per request over x402. Tier: default ($0.0010).

Verify a claim or fact check a statement against public web sources: send a question and up to 5 URLs, get cited evidence - passages that support, contradict or fail to settle it. Claim verification with a citation for every excerpt: source URL, retrieval time, content hash. Never charges when nothing is retrieved. Free to evaluate: the `sample` tool returns one real response at no cost, so you ca

Entry to Diplomacy table 'Lobby Table 6' (7 seats, winner takes pot)

Majority winner from a list of votes. Body: { votes: ["yes","yes","no"] }. Optional minShare 0–1.