Harpd Agent Data
REMOTE · API.HARPD.COM · SCANNED SEP 29
Live rankings and pricing for 10,000+ AI products and LLMs. Free tier; paid data via x402.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security66
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability66
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 869 tokens (~124/item across 7 items; 7 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability check failed: schema churn in the 11 days we've observed: 3 tool removals, 0 breaking changes, 0 auth/transport breaks, 3 additions. See how to fix → Fail
Tool Coverage74
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 11% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the Harpd Agent Data MCP server?
Harpd Agent Data is a hosted endpoint at https://api.harpd.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · api.harpd.com
claude mcp add --transport http com-harpd-agent-data 'https://api.harpd.com/mcp'
{
"mcpServers": {
"com-harpd-agent-data": {
"url": "https://api.harpd.com/mcp"
}
}
} {
"servers": {
"com-harpd-agent-data": {
"type": "http",
"url": "https://api.harpd.com/mcp"
}
}
} [mcp_servers.com-harpd-agent-data] url = "https://api.harpd.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-harpd-agent-data": {
"type": "remote",
"url": "https://api.harpd.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-harpd-agent-data --url 'https://api.harpd.com/mcp' --transport streamable-http
mcp_servers:
com-harpd-agent-data:
url: "https://api.harpd.com/mcp" {
"McpServers": {
"com-harpd-agent-data": {
"Transport": "http",
"Url": "https://api.harpd.com/mcp"
}
}
} assistant mcp add com-harpd-agent-data -t streamable-http -u 'https://api.harpd.com/mcp'
{
"mcpServers": {
"com-harpd-agent-data": {
"type": "http",
"url": "https://api.harpd.com/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 23 Sept 26 −3
- Stability: 0.13 → fail ▼ security
- A breaking change shipped without a version bump: still 1.0.0 ▼ security
- Tool “compare_products” was removed ▼ security
- Tool “optimize_model” was removed ▼ security
- Tool “research_products” was removed ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- New tool “harpd_compare” functional
- New tool “harpd_optimize” functional
- New tool “harpd_research” functional
- 22 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
- 18 Sept 26 65
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 29 Sept 2026 · Probed https://api.harpd.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=harpd.com | CN=WE1,O=Google Trust Services,C=US | 20 Sept 2026 | 19 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 657e2e7ae1cb56913ec93de6d0a661c |
| SANs: harpd.com, api.harpd.com, *.api.harpd.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of api.harpd.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| harpd.com. | present | 2371 | 13 | Verified |
| api.harpd.com. | Verified address RRset verified with the apex keys |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| content-security-policy | default-src 'none'; frame-ancestors 'none'; base-uri 'none' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.harpd.com/mcp | Verified | 200 | |
| http (plaintext) | http://api.harpd.com/mcp | Served over HTTP | 200 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_historical_data Harpd historical rank intelligence ~163
The rank history of one AI product over 3, 6 or 12 months: position over time, rank movement, best and worst position, and the archived period results. This is the one thing a single page view of the board cannot tell an agent — whether a position is rising or falling. PAID: 0.05 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/rank/
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | – |
| period | string | – | – |
| product | string | yes | Harpd product slug, e.g. "claude". |
| scope | string | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
get_rank Harpd AI product rankings ~70
Free Harpd Rank board for any scope and category, in the unified agent envelope. FREE: no payment, no API key, no account required. Canonical: https://harpd.com/rank/
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | – |
| limit | integer | – | – |
| scope | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
No examples provided.
harpd_compare Harpd AI product comparison ~103
Head-to-head comparison of 2–8 AI products: category, published rank, list pricing where the product is a priced model, and the material differences between them. PAID: 0.01 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/compare/
| Name | Type | Req | Description |
|---|---|---|---|
| products | array | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
harpd_optimize Harpd AI model cost optimization ~149
Given a task and the model currently running it, returns cheaper candidate models that still clear the task quality floor, with per-call and projected monthly savings, the performance trade-off, a confidence value and the evidence behind every number. PAID: 0.01 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/developers/agents/
| Name | Type | Req | Description |
|---|---|---|---|
| constraints | object | – | – |
| current_model | string | yes | – |
| max_cost | number | – | – |
| monthly_calls | integer | – | – |
| task | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
harpd_research Harpd AI product research ~105
A structured research answer over the Harpd catalog: matching products, category distribution, price bands, evidence per claim and the sources behind them. PAID: 0.05 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/research/
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| query | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
search_products Harpd AI product search ~73
Free keyword search over the published Harpd AI product catalog, with category filters and stable machine-readable results. FREE: no payment, no API key, no account required. Canonical: https://harpd.com/products/
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | – |
| limit | integer | – | – |
| q | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | – |
| meta | object | yes | – |
No examples provided.
verify_agent_payment Harpd testnet payment smoke test ~137
A deliberately trivial paid product that exists so an agent can prove its whole x402 payment path — 402 challenge, signing, settlement, receipt — before it spends anything on data. Costs $0.01 and returns the request it received plus the settlement receipt. PAID: 0.01 USDC per call, settled over x402 on Base. This tool returns HTTP 402 with x402 payment requirements when no payment is attached; sign the payment and retry. Canonical: https://harpd.com/developers/agents/
| Name | Type | Req | Description |
|---|---|---|---|
| echo | string | – | Any string; returned unchanged so the caller can correlate the round trip. |
Structured output declared, but exposes no named fields.
No examples provided.
What is the Harpd Agent Data MCP server?
Harpd Agent Data is an MCP server listed in the public MCP registry as com.harpd/agent-data. Live rankings and pricing for 10,000+ AI products and LLMs. Free tier; paid data via x402. This page covers its hosted endpoint (https://api.harpd.com/mcp).
Is the Harpd Agent Data MCP server safe to use?
Harpd Agent Data scores 64 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Harpd Agent Data MCP server expose?
Harpd Agent Data exposes 7 tools: get_historical_data, get_rank, harpd_compare, harpd_optimize, harpd_research, and 2 more. Their descriptions and schemas cost roughly 800 tokens of context every time the server is loaded.
Does the Harpd Agent Data MCP server require authentication?
No. We connected to Harpd Agent Data without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Harpd Agent Data MCP server still maintained?
Harpd Agent Data is still listed as active in the MCP registry. We last reached this channel on 29 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.