telnyx-x402-payment

telnyx-x402-payment is a skill for Claude Code from team-telnyx/ai. It costs 40 tokens per session (4,926 once invoked), scanned A, original, MIT.

A payment workflow for adding funds to a Telnyx account with USDC, a cryptocurrency token, on the Base blockchain. It covers getting a price quote, signing the payment, and submitting it for settlement through the x402 payment protocol.

In plain words
What is it for?
Use it to quote and submit USDC payments for Telnyx account funding when x402 payments are enabled for the account.
Why use it?
It gives you the required steps and account prerequisites for this specific cryptocurrency funding flow, including an API key and a wallet holding USDC on Base.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the telnyx-platform plugin — 92 skills, 1 agent, 3 hooks shipped together

Good fit Use it to quote and submit USDC payments for Telnyx account funding when x402 payments are enabled for the account.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/team-telnyx/ai/telnyx-x402-payment
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add team-telnyx/ai --skill telnyx-x402-payment
Clone the repo
git clone --depth 1 https://github.com/team-telnyx/ai

Made for: Claude Code.

Or install telnyx-platform, the plugin that ships this one along with the rest of its 92 skills, 1 agent, 3 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for telnyx-x402-payment

README.md
[![agentmods](https://agentmods.dev/badge/skills/team-telnyx/ai/telnyx-x402-payment/github.svg)](https://agentmods.dev/skills/team-telnyx/ai/telnyx-x402-payment)
Your own site
<a href="https://agentmods.dev/skills/team-telnyx/ai/telnyx-x402-payment"><img src="https://agentmods.dev/badge/skills/team-telnyx/ai/telnyx-x402-payment/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/team-telnyx/ai/telnyx-x402-payment"><img src="https://agentmods.dev/badge/skills/team-telnyx/ai/telnyx-x402-payment.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,926 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 7 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high YARA Match · line 3
    YARA rule matched a hack tool or exploit indicator (offensive tools, reconnaissance, privilege escalation, or exploit frameworks).
    Fix: Remove offensive tool references and exploit code. Legitimate agent skills should not contain penetration testing tools, exploit frameworks, or reconnaissance utilities.
  • medium Data Exfiltration · line 40
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 40
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 198
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 277
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 282
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 282
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00040 $0.04926
Opus 5 $0.00020 $0.02463
Sonnet 5 $0.00008 $0.00985
Haiku 4.5 $0.00004 $0.00493

Measured 6d ago against content hash 5683ab94816b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

telnyx-x402-payment scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- curl
providers/claude/plugins/telnyx-platform/skills/telnyx-x402-payment/SKILL.md · 408 lines

How it starts

The opening of the file, as written. The whole thing — 408 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Telnyx x402 Cryptocurrency Payment

Fund a Telnyx account with USDC on the Base blockchain using the x402 payment protocol. The flow has three steps: get a quote, sign the payment client-side, and submit for settlement.

Feature Flag: x402 payments are gated behind the X402_PAYMENTS_ENABLED feature flag. If not enabled for the account, the API returns 403 Forbidden.

Prerequisites

  • Telnyx API key (TELNYX_API_KEY)
  • Crypto wallet with USDC on Base network (chain ID: eip155:8453)
  • USDC contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Environment Variables

Variable Required Description
TELNYX_API_KEY Yes Telnyx API v2 key

Step 1: Get a Quote

Request a quote for the USD amount to fund. Per-payment minimum and maximum limits apply; they are configurable and may change, and the API's 422 error messages state the current values. Quotes expire after 5 minutes.

curl -s -X POST "https://api.telnyx.com/v2/x402/credit_account/quote" \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"amount_usd": "50.00"}' | jq .

Response:

{
  "data": {
    "id": "quote_abc123",
    "record_type": "quote",
    "amount_usd": "50.00",
    "amount_crypto": "50000000",
    "network": "eip155:8453",
    "expires_at": "2026-03-09T19:00:00Z",
    "payment_requirements": {
      "x402Version": 2,
      "resource": {
        "url": "payment:quote_abc123",
        "description": "Payment of $50.00 USD",
        "mimeType": "application/json"
      },
      "accepts": [
        {
          "scheme": "exact",
          "network": "eip155:8453",
          "amount": "50000000",
          "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "payTo": "0xRecipientAddress",
          "maxTimeoutSeconds": 300,
          "extra": {
            "quoteId": "quote_abc123",
            "facilitatorUrl": "https://www.x402.org/facilitator",
            "name": "USD Coin",
            "version": "2"
          }
        }
      ]
    }
  }
}

Read the full file on GitHub · 408 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 408 lines · 40 tokens per session scan A 5683ab94816b

Subscribe to this mod's changes

telnyx-x402-payment is a skill published in the GitHub repository team-telnyx/ai (213 stars, last pushed today), licensed MIT. It adds 40 tokens to every session and 4,926 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.

Related

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