# Send Billionverify Skill to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Then review README.md for any prerequisites, environment setup, or post-install checks. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Then review README.md for any prerequisites, environment setup, or post-install checks. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "billionverify-skill",
    "name": "Billionverify Skill",
    "source": "tencent",
    "type": "skill",
    "category": "开发工具",
    "sourceUrl": "https://clawhub.ai/billionverifier/billionverify-skill",
    "canonicalUrl": "https://clawhub.ai/billionverifier/billionverify-skill",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/billionverify-skill",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=billionverify-skill",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "README.md",
      "SKILL.md"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "slug": "billionverify-skill",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-30T12:17:49.590Z",
      "expiresAt": "2026-05-07T12:17:49.590Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=billionverify-skill",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=billionverify-skill",
        "contentDisposition": "attachment; filename=\"billionverify-skill-0.1.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null,
        "slug": "billionverify-skill"
      },
      "scope": "item",
      "summary": "Item download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this item.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/billionverify-skill"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/billionverify-skill",
    "downloadUrl": "https://openagent3.xyz/downloads/billionverify-skill",
    "agentUrl": "https://openagent3.xyz/skills/billionverify-skill/agent",
    "manifestUrl": "https://openagent3.xyz/skills/billionverify-skill/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/billionverify-skill/agent.md"
  }
}
```
## Documentation

### BillionVerify API Skill

Call the BillionVerify API to verify email addresses — single, batch, or bulk file processing.

### Setup

API key must be set in environment variable BILLIONVERIFY_API_KEY.
Get your API key at: https://billionverify.com/auth/sign-in?next=/home/api-keys

### Base URL

https://api.billionverify.com

### Authentication

All requests require an API key header:

-H "BV-API-KEY: $BILLIONVERIFY_API_KEY"

### Verify Single Email

curl -X POST "https://api.billionverify.com/v1/verify/single" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY" \\
  -H "Content-Type: application/json" \\
  -d '{
    "email": "user@example.com",
    "check_smtp": true
  }'

Response includes: status (valid/invalid/unknown/risky/disposable/catchall/role), score (0-1), is_deliverable, is_disposable, is_catchall, is_role, is_free, domain, domain_age, mx_records, domain_reputation, smtp_check, reason, suggestion, response_time, credits_used.

### Verify Batch Emails (max 50)

curl -X POST "https://api.billionverify.com/v1/verify/bulk" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY" \\
  -H "Content-Type: application/json" \\
  -d '{
    "emails": ["user1@example.com", "user2@example.com"],
    "check_smtp": true
  }'

### Upload File for Bulk Verification

Upload CSV, Excel (.xlsx/.xls), or TXT files (max 20MB, 100,000 emails):

curl -X POST "https://api.billionverify.com/v1/verify/file" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY" \\
  -F "file=@/path/to/emails.csv" \\
  -F "check_smtp=true" \\
  -F "email_column=email" \\
  -F "preserve_original=true"

Returns task_id for tracking the async job.

### Get File Job Status

Supports long-polling with timeout parameter (0-300 seconds):

curl -X GET "https://api.billionverify.com/v1/verify/file/{task_id}?timeout=30" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY"

Status values: pending, processing, completed, failed.

### Download Verification Results

Without filters returns redirect to full result file. With filters returns CSV of matching emails (filters combined with OR logic):

curl -X GET "https://api.billionverify.com/v1/verify/file/{task_id}/results?valid=true&invalid=true" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY" \\
  -L -o results.csv

Filter parameters: valid, invalid, catchall, role, unknown, disposable, risky.

### Get Credit Balance

curl -X GET "https://api.billionverify.com/v1/credits" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY"

### Create Webhook

curl -X POST "https://api.billionverify.com/v1/webhooks" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY" \\
  -H "Content-Type: application/json" \\
  -d '{
    "url": "https://your-app.com/webhooks/billionverify",
    "events": ["file.completed", "file.failed"]
  }'

The secret is only returned on creation — store it securely.

### List Webhooks

curl -X GET "https://api.billionverify.com/v1/webhooks" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY"

### Delete Webhook

curl -X DELETE "https://api.billionverify.com/v1/webhooks/{webhook_id}" \\
  -H "BV-API-KEY: $BILLIONVERIFY_API_KEY"

### Health Check (no auth required)

curl -X GET "https://api.billionverify.com/health"

### Credits & Billing

Invalid / Unknown: 0 credits (free)
All other statuses (valid, risky, disposable, catchall, role): 1 credit each

### Rate Limits

EndpointLimitSingle Verification6,000/minBatch Verification1,500/minFile Upload300/minOther endpoints200/min

### User Request

$ARGUMENTS
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: billionverifier
- Version: 0.1.0
## Source health
- Status: healthy
- Item download looks usable.
- Yavira can redirect you to the upstream package for this item.
- Health scope: item
- Reason: direct_download_ok
- Checked at: 2026-04-30T12:17:49.590Z
- Expires at: 2026-05-07T12:17:49.590Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/billionverify-skill)
- [Send to Agent page](https://openagent3.xyz/skills/billionverify-skill/agent)
- [JSON manifest](https://openagent3.xyz/skills/billionverify-skill/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/billionverify-skill/agent.md)
- [Download page](https://openagent3.xyz/downloads/billionverify-skill)