Xpersona

Crawler Summary

openclaw answer-first brief

Send physical USPS mail via API, paid with Solana USDC --- name: openclaw description: "Send physical USPS mail via API, paid with Solana USDC" --- OpenClaw — Send physical mail via Mailclaw API You are OpenClaw, a Claude Code skill for sending physical mail via the Mailclaw API (https://www.mailclaw.xyz). What you do Help the user compose and send a letter through USPS using the Mailclaw API. You accept a PDF file or plain text, recipient/sender addresses, and a service Published capability contract available. No trust telemetry is available yet. Last updated 3/1/2026.

Freshness

Last checked 3/1/2026

Best For

Contract is available with explicit auth and schema references.

Not Ideal For

openclaw is not ideal for teams that need stronger public trust telemetry, lower setup complexity, or more explicit contract coverage before production rollout.

Evidence Sources Checked

editorial-content, capability-contract, runtime-metrics, public facts pack

CardFactsSnapshotContractTrust
Claim this agent
Agent DossierGitHubSafety: 89/100

openclaw

Send physical USPS mail via API, paid with Solana USDC --- name: openclaw description: "Send physical USPS mail via API, paid with Solana USDC" --- OpenClaw — Send physical mail via Mailclaw API You are OpenClaw, a Claude Code skill for sending physical mail via the Mailclaw API (https://www.mailclaw.xyz). What you do Help the user compose and send a letter through USPS using the Mailclaw API. You accept a PDF file or plain text, recipient/sender addresses, and a service

OpenClawself-declared

Public facts

6

Change events

1

Artifacts

0

Freshness

Mar 1, 2026

Verifiededitorial-contentNo verified compatibility signals

Published capability contract available. No trust telemetry is available yet. Last updated 3/1/2026.

Schema refs publishedTrust evidence available

Trust score

Unknown

Compatibility

OpenClaw

Freshness

Mar 1, 2026

Vendor

Matts8008

Artifacts

0

Benchmarks

0

Last release

Unpublished

Executive Summary

Key links, install path, and a quick operational read before the deeper crawl record.

Verifiededitorial-content

Summary

Published capability contract available. No trust telemetry is available yet. Last updated 3/1/2026.

View Source

Setup snapshot

git clone https://github.com/matts8008/mailclaw-skill.git
  1. 1

    Setup complexity is LOW. This package is likely designed for quick installation with minimal external side-effects.

  2. 2

    Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Evidence Ledger

Everything public we have scraped or crawled about this agent, grouped by evidence type with provenance.

Verifiededitorial-content
Vendor (1)

Vendor

Matts8008

profilemedium
Observed Mar 1, 2026Source linkProvenance
Compatibility (2)

Protocol compatibility

OpenClaw

contractmedium
Observed Feb 24, 2026Source linkProvenance

Auth modes

api_key

contracthigh
Observed Feb 24, 2026Source linkProvenance
Artifact (1)

Machine-readable schemas

OpenAPI or schema references published

contracthigh
Observed Feb 24, 2026Source linkProvenance
Security (1)

Handshake status

UNKNOWN

trustmedium
Observed unknownSource linkProvenance
Integration (1)

Crawlable docs

6 indexed pages on the official domain

search_documentmedium
Observed Apr 15, 2026Source linkProvenance

Release & Crawl Timeline

Merged public release, docs, artifact, benchmark, pricing, and trust refresh events.

Self-declaredagent-index

Docs Update

Docs refreshed: Sign in to GitHub · GitHub

search_documentmedium

Fresh crawlable documentation was indexed for the official domain.

Observed Apr 15, 2026

Artifacts Archive

Extracted files, examples, snippets, parameters, dependencies, permissions, and artifact metadata.

Self-declaredGITHUB OPENCLEW

Extracted files

0

Examples

2

Snippets

0

Languages

typescript

Parameters

Executable Examples

text

curl -s -X POST https://www.mailclaw.xyz/api/v1/preview \
     -H "Content-Type: application/json" \
     -d '{"content": {...}, "service": "..."}'

text

curl -s -X POST https://www.mailclaw.xyz/api/v1/jobs \
     -H "Content-Type: application/json" \
     -d '{"email": "...", "to": {...}, "from": {...}, "content": {...}, "service": "..."}'

Docs & README

Full documentation captured from public sources, including the complete README when available.

Self-declaredGITHUB OPENCLEW

Docs source

GITHUB OPENCLEW

Editorial quality

ready

Send physical USPS mail via API, paid with Solana USDC --- name: openclaw description: "Send physical USPS mail via API, paid with Solana USDC" --- OpenClaw — Send physical mail via Mailclaw API You are OpenClaw, a Claude Code skill for sending physical mail via the Mailclaw API (https://www.mailclaw.xyz). What you do Help the user compose and send a letter through USPS using the Mailclaw API. You accept a PDF file or plain text, recipient/sender addresses, and a service

Full README

name: openclaw description: "Send physical USPS mail via API, paid with Solana USDC"

OpenClaw — Send physical mail via Mailclaw API

You are OpenClaw, a Claude Code skill for sending physical mail via the Mailclaw API (https://www.mailclaw.xyz).

What you do

Help the user compose and send a letter through USPS using the Mailclaw API. You accept a PDF file or plain text, recipient/sender addresses, and a service tier, then submit the job.

User input

The user will provide arguments: $ARGUMENTS

If arguments are empty or vague, ask the user what they want to mail and to whom. For example: "/openclaw send a certified letter to Gabe Newell at Valve asking when Half-Life 3 is coming out"

Flow

  1. Gather info — Ask the user (if not provided):

    • What to send: a PDF file path or text content
    • To address: name, street, city, state, zip (or country for international)
    • From address: name, street, city, state, zip
    • Email address for updates
    • Service tier (default: certified)

  2. Preview — Call the preview endpoint first to show page count and pricing:

    curl -s -X POST https://www.mailclaw.xyz/api/v1/preview \
  -H "Content-Type: application/json" \
  -d '{"content": {...}, "service": "..."}'

  3. Confirm — Show the user:

    • Page count
    • Total price (USD/USDC)
    • Service type
    • To/From addresses Ask for confirmation before submitting.

  4. Submit — Create the job:

    curl -s -X POST https://www.mailclaw.xyz/api/v1/jobs \
  -H "Content-Type: application/json" \
  -d '{"email": "...", "to": {...}, "from": {...}, "content": {...}, "service": "..."}'

  5. Report — Show the user:

    • Job ID
    • Payment address (Solana USDC)
    • Amount to pay
    • Expiry time (30 min)
    • How to check status: curl https://www.mailclaw.xyz/api/v1/jobs/<id>

Content handling

  • If the user provides a file path to a PDF, read it and base64-encode it for content.pdf
  • If the user provides text (or asks you to write a letter), use content.text
  • Max 60 pages. Base price covers 3 pages, +$1/page after that.

Service tiers

| Value | Description | Price | |-------|-------------|-------| | first_class | USPS First Class (domestic) | $4.80 | | certified | Certified Mail (domestic, default) | $9.40 | | certified_return_receipt | Certified + Return Receipt | $16.00 | | international | International First Class | $9.45 |

Important notes

  • No authentication required — the API is public
  • Payment is in USDC on Solana (currently devnet)
  • No refunds — whatever gets sent will be printed and mailed
  • The envelope is hand-addressed and photographed; photo available for 3 days
  • Rate limit: 10 requests per minute

Contract & API

Machine endpoints, protocol fit, contract coverage, invocation examples, and guardrails for agent-to-agent use.

Verifiedcapability-contract

Endpoints

Dossier APISnapshot APIContract APITrust API

Contract coverage

Status

ready

Auth

api_key

Streaming

No

Data region

global

Protocol support

OpenClaw: self-declared

Requires: openclew, lang:typescript

Forbidden: none

Guardrails

Operational confidence: medium

Contract is available with explicit auth and schema references.
Trust confidence is not low and verification freshness is acceptable.
Invocation examples
curl -s "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/snapshot"
curl -s "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/contract"
curl -s "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/trust"

Reliability & Benchmarks

Trust and runtime signals, benchmark suites, failure patterns, and practical risk constraints.

Missingruntime-metrics

Trust signals

Handshake

UNKNOWN

Confidence

unknown

Attempts 30d

unknown

Fallback rate

unknown

Runtime metrics

Observed P50

unknown

Observed P95

unknown

Rate limit

unknown

Estimated cost

unknown

No benchmark suites or observed failure patterns are available.

Media & Demo

Every public screenshot, visual asset, demo link, and owner-provided destination tied to this agent.

Missingno-media
No screenshots, media assets, or demo links are available.

Related Agents

Neighboring agents from the same protocol and source ecosystem for comparison and shortlist building.

Self-declaredprotocol-neighbors
GITHUB_REPOSactivepieces

Rank

70

AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents

Traction

No public download signal

Freshness

Updated 2d ago

OPENCLAW
GITHUB_REPOScherry-studio

Rank

70

AI productivity studio with smart chat, autonomous agents, and 300+ assistants. Unified access to frontier LLMs

Traction

No public download signal

Freshness

Updated 5d ago

MCPOPENCLAW
GITHUB_REPOSAionUi

Rank

70

Free, local, open-source 24/7 Cowork app and OpenClaw for Gemini CLI, Claude Code, Codex, OpenCode, Qwen Code, Goose CLI, Auggie, and more | 🌟 Star if you like it!

Traction

No public download signal

Freshness

Updated 6d ago

MCPOPENCLAW
GITHUB_REPOSCopilotKit

Rank

70

The Frontend for Agents & Generative UI. React + Angular

Traction

No public download signal

Freshness

Updated 23d ago

OPENCLAW
Agent hubMore from this sourceOpenClaw agents
Machine Appendix

Contract JSON

{
  "contractStatus": "ready",
  "authModes": [
    "api_key"
  ],
  "requires": [
    "openclew",
    "lang:typescript"
  ],
  "forbidden": [],
  "supportsMcp": false,
  "supportsA2a": false,
  "supportsStreaming": false,
  "inputSchemaRef": "https://github.com/matts8008/mailclaw-skill#input",
  "outputSchemaRef": "https://github.com/matts8008/mailclaw-skill#output",
  "dataRegion": "global",
  "contractUpdatedAt": "2026-02-24T19:42:00.161Z",
  "sourceUpdatedAt": "2026-02-24T19:42:00.161Z",
  "freshnessSeconds": 4420515
}

Invocation Guide

{
  "preferredApi": {
    "snapshotUrl": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/snapshot",
    "contractUrl": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/contract",
    "trustUrl": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/trust"
  },
  "curlExamples": [
    "curl -s \"https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/snapshot\"",
    "curl -s \"https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/contract\"",
    "curl -s \"https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/trust\""
  ],
  "jsonRequestTemplate": {
    "query": "summarize this repo",
    "constraints": {
      "maxLatencyMs": 2000,
      "protocolPreference": [
        "OPENCLEW"
      ]
    }
  },
  "jsonResponseTemplate": {
    "ok": true,
    "result": {
      "summary": "...",
      "confidence": 0.9
    },
    "meta": {
      "source": "GITHUB_OPENCLEW",
      "generatedAt": "2026-04-16T23:37:15.203Z"
    }
  },
  "retryPolicy": {
    "maxAttempts": 3,
    "backoffMs": [
      500,
      1500,
      3500
    ],
    "retryableConditions": [
      "HTTP_429",
      "HTTP_503",
      "NETWORK_TIMEOUT"
    ]
  }
}

Trust JSON

{
  "status": "unavailable",
  "handshakeStatus": "UNKNOWN",
  "verificationFreshnessHours": null,
  "reputationScore": null,
  "p95LatencyMs": null,
  "successRate30d": null,
  "fallbackRate": null,
  "attempts30d": null,
  "trustUpdatedAt": null,
  "trustConfidence": "unknown",
  "sourceUpdatedAt": null,
  "freshnessSeconds": null
}

Capability Matrix

{
  "rows": [
    {
      "key": "OPENCLEW",
      "type": "protocol",
      "support": "unknown",
      "confidenceSource": "profile",
      "notes": "Listed on profile"
    }
  ],
  "flattenedTokens": "protocol:OPENCLEW|unknown|profile"
}

Facts JSON

[
  {
    "factKey": "docs_crawl",
    "category": "integration",
    "label": "Crawlable docs",
    "value": "6 indexed pages on the official domain",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  },
  {
    "factKey": "vendor",
    "category": "vendor",
    "label": "Vendor",
    "value": "Matts8008",
    "href": "https://github.com/matts8008/mailclaw-skill",
    "sourceUrl": "https://github.com/matts8008/mailclaw-skill",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-03-01T06:03:26.472Z",
    "isPublic": true
  },
  {
    "factKey": "protocols",
    "category": "compatibility",
    "label": "Protocol compatibility",
    "value": "OpenClaw",
    "href": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/contract",
    "sourceUrl": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/contract",
    "sourceType": "contract",
    "confidence": "medium",
    "observedAt": "2026-02-24T19:42:00.161Z",
    "isPublic": true
  },
  {
    "factKey": "auth_modes",
    "category": "compatibility",
    "label": "Auth modes",
    "value": "api_key",
    "href": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/contract",
    "sourceUrl": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:42:00.161Z",
    "isPublic": true
  },
  {
    "factKey": "schema_refs",
    "category": "artifact",
    "label": "Machine-readable schemas",
    "value": "OpenAPI or schema references published",
    "href": "https://github.com/matts8008/mailclaw-skill#input",
    "sourceUrl": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:42:00.161Z",
    "isPublic": true
  },
  {
    "factKey": "handshake_status",
    "category": "security",
    "label": "Handshake status",
    "value": "UNKNOWN",
    "href": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/trust",
    "sourceUrl": "https://xpersona.co/api/v1/agents/matts8008-mailclaw-skill/trust",
    "sourceType": "trust",
    "confidence": "medium",
    "observedAt": null,
    "isPublic": true
  }
]

Change Events JSON

[
  {
    "eventType": "docs_update",
    "title": "Docs refreshed: Sign in to GitHub · GitHub",
    "description": "Fresh crawlable documentation was indexed for the official domain.",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  }
]

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