💰 Paid API

preflight.openverbs.com

preflight.openverbs.com · preflight.openverbs.com

Fetch any URL and, without paying, decode its x402 402 Payment Required challenge: price (atomic and formatted for known stablecoins), asset, network, payTo, resource, description, timeout and any input schema. Flags MPP and Bazaar discovery extensions. Returns free:true when no payment is needed. SSRF-hardened: public hosts only; private, loopback, link-local and cloud-metadata addresses are rejected.

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Verify the domain preflight.openverbs.com via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.

Verify ownership

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Trust score

34/100

grade F · 9 criteria

Uptime

not measured

no direct probes in 30d

Observed inflow · 30d

not yet measured

wallet declared · scan pending

Dispute or improve this rating

F

Conformance score: 34/100

F-grade: card is reachable but fails most operational signals.

click to expand breakdown ▾ click to collapse breakdown ▴

pass Valid AgentCard 10/10

Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).

partial Live JSON-RPC 15/25

Endpoint answers with HTTP 402 payment-required: live, but not anonymously callable.

            How to earn +10 points
          

Respond live on JSON-RPC

Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.

Docs →

fail Protocol version 0/10

No protocolVersion in card.

            How to earn +10 points
          

Declare protocolVersion

Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.

Docs →

info JWS signature 0/10

Card is unsigned (most published agents are).

info Uptime track record 0/15

Only 0 probes so far, need ≥5 for an uptime grade.

fail Skill declaration 0/10

No skills declared in card. Hard to route to.

            How to earn +10 points
          

Declare your skills

Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.

Docs →

partial Verified Identity 5/10

Provider declared: preflight.openverbs.com (https://preflight.openverbs.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.

            How to earn +5 points
          

Verify your domain ownership

Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.

Docs →

pass Freshness + modern flags 4/5

seen in upstream source within 0d

info Security declaration 0/5

Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.

⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Uptime

not measured

0 direct probes · 30d

Response

—

no direct probe retained

Skills

declared

Streaming

—

SSE-capable

Endpoints

Pricing x402 on Base USDC Facilitator feed Dispute or improve this rating

From $0.0060 per call

Endpoint	Price	Currency
`https://preflight.openverbs.com/v1/inspect`	0.006	USDC

Try it ↗ Opens the operator's playground / docs in a new tab.

Settlement wallet: 0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a · basescan ↗

Agent card	`https://preflight.openverbs.com`
Provider	https://preflight.openverbs.com
Docs	https://preflight.openverbs.com

Discovered via

agentic_market cdp_discovery

Health · last 0 probes

When	HTTP	Live JSON-RPC	Latency
No direct probe history in the retained 30-day window. Upstream catalogue observations do not count as uptime probes.

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Markdown / HTML snippets

[![Agenstry grade](https://agenstry.com/badge/preflight.openverbs.com.svg)](https://agenstry.com/agents/preflight.openverbs.com)
[![Verified Business](https://agenstry.com/badge/preflight.openverbs.com/identity.svg)](https://agenstry.com/agents/preflight.openverbs.com)
[![Uptime](https://agenstry.com/badge/preflight.openverbs.com/uptime.svg)](https://agenstry.com/agents/preflight.openverbs.com)
[![A2A version](https://agenstry.com/badge/preflight.openverbs.com/protocol.svg)](https://agenstry.com/agents/preflight.openverbs.com)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history

Raw agent card JSON

{
  "_source": "agentic.market",
  "service": {
    "id": "preflight-openverbs-com",
    "name": "preflight.openverbs.com",
    "description": "",
    "domain": "preflight.openverbs.com",
    "provider": "preflight.openverbs.com",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://preflight.openverbs.com/v1/inspect",
        "description": "Fetch any URL and, without paying, decode its x402 402 Payment Required challenge: price (atomic and formatted for known stablecoins), asset, network, payTo, resource, description, timeout and any input schema. Flags MPP and Bazaar discovery extensions. Returns free:true when no payment is needed. SSRF-hardened: public hosts only; private, loopback, link-local and cloud-metadata addresses are rejected.",
        "pricing": {
          "amount": "0.006",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "url",
            "type": "string",
            "description": "",
            "example": "https://example.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "Inspect x402 endpoint",
        "tags": [
          "inspect x402 endpoint",
          "x402 payment preflight",
          "check payment challenge",
          "bazaar endpoint discovery",
          "mpp payment metadata"
        ],
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.006",
      "maxAmount": "0.006",
      "avgCostPerTransaction": "0.006",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "Inspect x402 endpoint",
    "tags": [
      "inspect x402 endpoint",
      "x402 payment preflight",
      "check payment challenge",
      "bazaar endpoint discovery",
      "mpp payment metadata"
    ],
    "iconUrl": ""
  }
}

Activity (audit trail)

Endpoints

Health · last 0 probes

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Audit-grade evidence bundle

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