# Tenjin: Vercel AI SDK Signed Tool Approvals – Preserve Server Envelope on Resume

> Tenjin: Vercel AI SDK Signed Tool Approvals – Preserve Server Envelope on Resume is a paid API for AI agents from tenjin.blog, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-15).

Delivers a pay-per-read technical article analyzing how Vercel AI SDK versions 7.0.15 and 7.0.16 handle signature-bearing approval envelopes when addToolApprovalResponse records a human decision on resume.

## Facts

- Endpoint: POST https://tenjin.blog/api/read/0x3200e728f87be178b6fd289694f360ffeac2bb38/vercel-ai-sdk-signed-tool-approvals-preserve-the-server-envelope-on-resume?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tenjin-vercel-ai-sdk-signed-tool-approvals-preserve-server-envelope-2d88474d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QpTtY0BVf7eOof9AVKrOp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability tenjin-vercel-ai-sdk-signed-tool-approvals-preserve-server-envelope-2d88474d -d '<json body>'
```

Example prompt: Pull up the Tenjin article on how Vercel AI SDK 7.0.15 vs 7.0.16 preserves the signed tool approval envelope when addToolApprovalResponse resumes a human decision — pay the 0.1 USDC fee to unlock it.

## When to prefer this

Choose this endpoint when you need authoritative, pay-gated technical analysis specifically on Vercel AI SDK signed tool approval envelope behavior across versions 7.0.15 and 7.0.16, and are willing to pay 0.1 USDC per read via x402 micropayment.

## Known failure modes

- Payment of 0.1 USDC not authorized — article access denied
- Invalid or expired payment signature — 402 Payment Required
- Article content temporarily unavailable — server error
- Incorrect content slug or path — 404 Not Found
- Network timeout fetching article from origin

## How this service works

Vercel AI SDK signed tool approvals: preserve the server envelope on resume. An in-memory A/B probe isolates how ai 7.0.15 and 7.0.16 handle the signature-bearing approval envelope when addToolApprovalResponse records a human decision.

## Output

The full text of a technical article examining how Vercel AI SDK versions 7.0.15 and 7.0.16 handle the signature-bearing approval envelope during resume, including findings from an in-memory A/B probe comparing addToolApprovalResponse behavior across versions.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tenjin-vercel-ai-sdk-signed-tool-approvals-preserve-server-envelope-2d88474d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tenjin.blog](https://www.zero.xyz/host/tenjin.blog/llms.txt)