Harpd Agent API

{
  "agent_id": "harpd_agent_api",
  "name": "Harpd Agent API",
  "url": "https://harpd.com/developers/agents/",
  "logo": "https://www.google.com/s2/favicons?domain=harpd.com&sz=128",
  "niche": null,
  "category": null,
  "short_summary": "Machine-first API and MCP server providing AI product search, rankings, comparisons, research, model cost optimization, and dataset queries for autonomous agen…",
  "task_performed": "unclear",
  "inputs_accepted": [],
  "outputs_produced": [],
  "integrations_available": [],
  "protocols_or_interfaces": [
    "X402",
    "MCP",
    "A2A"
  ],
  "industry_fit": [],
  "autonomy_level": "unclear",
  "human_approval_needed": "unclear",
  "pricing_model": "unclear",
  "price": {
    "observed": true,
    "billing": "one-time",
    "source_kind": "vendor",
    "currency": "USD",
    "lowest_monthly_usd": null,
    "monthly_usd": null,
    "headline": "$0.01 per call; $0.05 per call (usage-based; prepaid credit $10 USD)",
    "commercial": {
      "rates": [
        {
          "line": "Product comparison",
          "per": "per call",
          "text": "$0.01 per call"
        },
        {
          "line": "Model cost optimisation",
          "per": "per call",
          "text": "$0.05 per call"
        },
        {
          "line": "Product research",
          "per": "per call",
          "text": "$0.05 per call"
        },
        {
          "line": "Dataset query",
          "per": "per call",
          "text": "$0.02 per call"
        }
      ],
      "currency": "USD",
      "notes": [
        "prepaid credit: $10 USD (funding, not a subscription)"
      ],
      "lines": [
        {
          "name": "10 Credit Pack",
          "price": "$10 USD",
          "kind": "credit_purchase",
          "unit": "credit",
          "billed": "one_off"
        },
        {
          "name": "50 Credit Pack",
          "price": "$50 USD",
          "kind": "credit_purchase",
          "unit": "credit",
          "billed": "one_off"
        },
        {
          "name": "100 Credit Pack",
          "price": "$100 USD",
          "kind": "credit_purchase",
          "unit": "credit",
          "billed": "one_off"
        },
        {
          "name": "500 Credit Pack",
          "price": "$500 USD",
          "kind": "credit_purchase",
          "unit": "credit",
          "billed": "one_off"
        },
        {
          "name": "1,000 Credit Pack",
          "price": "$1,000 USD",
          "kind": "credit_purchase",
          "unit": "credit",
          "billed": "one_off"
        },
        {
          "name": "Product comparison",
          "price": "0.01 USDC",
          "kind": "usage_rate",
          "unit": "call",
          "billed": "usage"
        },
        {
          "name": "Model cost optimisation",
          "price": "0.05 USDC",
          "kind": "usage_rate",
          "unit": "call",
          "billed": "usage"
        },
        {
          "name": "Product research",
          "price": "0.05 USDC",
          "kind": "usage_rate",
          "unit": "call",
          "billed": "usage"
        },
        {
          "name": "Dataset query",
          "price": "from 0.02 USDC",
          "kind": "usage_rate",
          "unit": "call",
          "billed": "usage"
        }
      ]
    },
    "summary": "$0.01 per call; $0.05 per call (usage-based; prepaid credit $10 USD). Harpd offers prepaid USD credit packs with no monthly subscription, while its agent API charges per paid call in USDC.",
    "confidence": "high",
    "source_url": "https://harpd.com/pricing",
    "checked_at": "2026-10-24T01:59:54.566Z",
    "amount": null,
    "display": null,
    "plans": [
      {
        "name": "10 Credit Pack",
        "price": "$10 USD",
        "usage": true,
        "period": "one-time",
        "persona": "individual",
        "highlights": [
          "10 credits",
          "One-time Stripe payment",
          "Credits do not expire"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      },
      {
        "name": "50 Credit Pack",
        "price": "$50 USD",
        "usage": true,
        "period": "one-time",
        "persona": "pro",
        "highlights": [
          "50 credits",
          "One-time Stripe payment",
          "Credits do not expire"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      },
      {
        "name": "100 Credit Pack",
        "price": "$100 USD",
        "usage": true,
        "period": "one-time",
        "persona": "team_sme",
        "highlights": [
          "100 credits",
          "One-time Stripe payment",
          "Credits do not expire"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      },
      {
        "name": "500 Credit Pack",
        "price": "$500 USD",
        "usage": true,
        "period": "one-time",
        "persona": "enterprise",
        "highlights": [
          "500 credits",
          "One-time Stripe payment",
          "Credits do not expire"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      },
      {
        "name": "1,000 Credit Pack",
        "price": "$1,000 USD",
        "usage": true,
        "period": "one-time",
        "persona": "enterprise",
        "highlights": [
          "1,000 credits",
          "One-time Stripe payment",
          "Credits do not expire"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      },
      {
        "name": "Product comparison",
        "price": "0.01 USDC",
        "usage": true,
        "period": "usage",
        "persona": "individual",
        "highlights": [
          "Per API call",
          "Compares 2–8 products"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      },
      {
        "name": "Model cost optimisation",
        "price": "0.05 USDC",
        "usage": true,
        "period": "usage",
        "persona": "individual",
        "highlights": [
          "Per API call",
          "Optimizes model cost"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      },
      {
        "name": "Product research",
        "price": "0.05 USDC",
        "usage": true,
        "period": "usage",
        "persona": "individual",
        "highlights": [
          "Per API call",
          "Structured research with evidence"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      },
      {
        "name": "Dataset query",
        "price": "from 0.02 USDC",
        "usage": true,
        "period": "usage",
        "persona": "individual",
        "highlights": [
          "Per API call",
          "Priced in row bands"
        ],
        "promo_note": null,
        "price_promo": null,
        "price_annual": null
      }
    ],
    "source": "render+llm"
  },
  "trust_or_rating_signal": [],
  "evidence_quality": "unclear",
  "entity_type": "agent_api_endpoint",
  "regulated_data_suitability": "unclear",
  "evidence_urls": [
    "https://harpd.com/developers/agents/"
  ],
  "last_checked": "2026-10-24",
  "profile_checked": null,
  "price_checked": "2026-10-24",
  "how_to_connect": {
    "website": "https://harpd.com/developers/agents/",
    "docs": null,
    "mcp": null,
    "a2a": null,
    "api": null,
    "protocols": [
      "x402",
      "MCP",
      "A2A"
    ],
    "install": null,
    "repository": null,
    "note": "Speaks x402, MCP, A2A but publishes no endpoint we could verify — check the docs/website."
  },
  "deployment": {
    "model": "unknown",
    "both_offered": false,
    "hosted_endpoint": null,
    "install": null,
    "note": "No deployment evidence held — Agentery has no endpoint, install instruction or directory attribute for this listing.",
    "evidence": null
  },
  "licence": {
    "name": null,
    "note": "No named licence found in the retained page text or source attributes. A public repository alone does not establish an open-source licence.",
    "evidence": null
  },
  "evidence_checks": {
    "price": {
      "source_url": "https://harpd.com/pricing",
      "last_observed_day": "2026-10-24",
      "age_days": 1,
      "verified_day": null,
      "note": "from the listing's current price record; no separate page-text verification is held"
    },
    "agent_card": {
      "status": "unknown",
      "note": "no Agent Card URL recorded for this listing"
    },
    "endpoint": {
      "status": "unknown",
      "note": "endpoint not yet checked"
    }
  },
  "product_group": null,
  "liveness": {
    "probed": true,
    "alive": true,
    "endpoint_kind": "site",
    "latency_ms": 326,
    "uptime_7d": 1,
    "checked_at": "2026-10-24T02:36:39.573Z",
    "consecutive_failures": 0,
    "status": "alive"
  },
  "price_extras": {
    "free_tier": null,
    "unit_cost": null
  },
  "reported_success": null,
  "a2a_check": {
    "checked_on": "2026-10-16",
    "card_url": "https://harpd.com/.well-known/agent-card.json",
    "card_name": "Harpd",
    "declared_version": null,
    "endpoint": null,
    "skills": [
      "read_dataset",
      "lookup_claim",
      "search_citations",
      "read_methodology"
    ],
    "findings": [
      {
        "label": "Interface",
        "value": "No A2A JSON-RPC interface declared (transport: unknown)",
        "ok": false
      },
      {
        "label": "Protocol version",
        "value": "Not stated in the agent card",
        "ok": null
      }
    ],
    "vendor_published": null,
    "note": "Automated check of the vendor's public A2A agent card and endpoint. The check reads the card and sends an empty JSON-RPC request; it delivers no message. Vendor quotes are copied word for word from the card or its documentation."
  },
  "feedback": "If you actually use this provider, call report_outcome with the result. Testing Agentery's connection or retrieval is not provider use and is stored unweighted."
}