# io.github.LumiRx/5arz-proof-of-human (remote · mcp.5arz.com)

Prove a real, unique human performed an action; mint a signed, verifiable Proof-of-Human credential.

- Trust score: 68/100 (medium)
- Change this week: +2
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.5arz.com`: 68/100 (this document), [markdown](https://verifymcp.io/servers/lumirx-5arz-proof-of-human/mcp.md), [page](https://verifymcp.io/servers/lumirx-5arz-proof-of-human/mcp)

## Channel facts

- Endpoint: `https://mcp.5arz.com`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 66/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 6 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 75/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 768 tokens (~128/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http lumirx-5arz-proof-of-human https://mcp.5arz.com/
```

### Codex

```toml
[mcp_servers.lumirx-5arz-proof-of-human]
url = "https://mcp.5arz.com/"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "lumirx-5arz-proof-of-human": {
      "type": "remote",
      "url": "https://mcp.5arz.com/",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add lumirx-5arz-proof-of-human --url https://mcp.5arz.com/ --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  lumirx-5arz-proof-of-human:
    url: "https://mcp.5arz.com/"
```

### Other

```json
{
  "mcpServers": {
    "lumirx-5arz-proof-of-human": {
      "type": "http",
      "url": "https://mcp.5arz.com/"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 67, −1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 68, +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.

### 2026-07-28 (score 67, +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.

### 2026-07-27 (score 66, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 65)

First indexed and scored.

## MCP tools (6)

### `register_agent` (~124 tokens)

Register an agent (get a 5arz API key)

Create a 5arz API key so your agent can request proof-of-human credentials. Every new key includes a 20-verification free tier (no card). Pass mode:"test" for an unlimited free sandbox key (arz_test_…) whose credentials are marked test:true — never treat test credentials as production proof. The key is shown once; store it.

Input parameters:

- `contactEmail` (string, required): Contact email for the account.
- `mode` (string): live for production keys; test for an unlimited free sandbox key.
- `name` (string, required): Your company or agent name.

### `verify_human` (~236 tokens)

Verify a human (mint a PoHF credential)

Mint a signed Proof-of-Human-Fulfillment (PoHF) credential attesting a real, unique, attentive human performed an action. Provide sessionId to attest work fulfillment, or memberId to attest personhood (anti-sybil, optionally wallet-bound). Spends 1 credit (free inside the 20-verification tier; unlimited for test keys). Returns an ES256 JWT that anyone can verify against the public JWKS — pass it to check_credential. Requires an API key (Authorization: Bearer, or the apiKey argument).

Input parameters:

- `apiKey` (string): Optional: pass your key here if your client cannot set the Authorization header.
- `memberId` (string): Member to attest as a unique live human (personhood path).
- `sessionId` (string): Verified session to attest (work-fulfillment path).
- `wallet` (string): Optional EVM address to bind for on-chain isVerifiedHuman() gating (personhood path).
- `walletNonce` (string): Optional wallet challenge nonce.
- `walletSig` (string): Optional EIP-191 personal_sign of the wallet challenge.

### `check_credential` (~87 tokens)

Verify a PoHF credential (no 5arz trust required)

Independently verify a 5arz PoHF JWT: checks the ES256 signature against the live public JWKS and validates expiry/not-before, then returns valid/invalid plus the decoded claims. No API key needed — this is pure cryptographic verification you could also do with any standard JWT library.

Input parameters:

- `pohf_jwt` (string, required): The compact JWT string returned by verify_human.

### `get_vhh_index` (~59 tokens)

Get the Verified-Human-Hour index ($/hr)

Return the current Verified-Human-Hour (VHH) index — the benchmark price of one hour of verified human work/attention, in USD. Free, no API key. Useful for pricing verified-human data and as a citable benchmark.

### `buy_credits` (~132 tokens)

Buy a prepaid verification pack

Get a Stripe checkout link for a prepaid verification pack: starter (100 / $49), growth (1,000 / $299), or scale (10,000 / $1,999). Credits post on payment. Test keys skip this (unlimited). For pay-per-call settlement, 5arz also supports x402. Requires an API key.

Input parameters:

- `apiKey` (string): Optional: pass your key here if your client cannot set the Authorization header.
- `pack` (string, required): starter=100/$49, growth=1,000/$299, scale=10,000/$1,999.

### `get_balance` (~48 tokens)

Check remaining verifications

Return remaining prepaid verification credits, plus lifetime purchased/consumed. Requires an API key.

Input parameters:

- `apiKey` (string): Optional: pass your key here if your client cannot set the Authorization header.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/lumirx-5arz-proof-of-human/mcp#diagnostics

## Score history

- 2026-08-03: 68
- 2026-08-02: 68
- 2026-08-01: 67
- 2026-07-31: 67
- 2026-07-30: 68
- 2026-07-29: 67
- 2026-07-28: 67
- 2026-07-27: 66
- 2026-07-26: 65

## Links

- Remote endpoint: https://mcp.5arz.com/
- Website: https://5arz.com/agentic-commerce
- Changelog RSS feed: https://verifymcp.io/servers/lumirx-5arz-proof-of-human/mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/lumirx-5arz-proof-of-human/mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/lumirx-5arz-proof-of-human/mcp