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.
npx skills add egocen-vivideo/vivideo-toolchain --skill handle-limits-and-errorsgit clone --depth 1 https://github.com/egocen-vivideo/vivideo-toolchainWrote 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.
[](https://agentmods.dev/skills/egocen-vivideo/vivideo-toolchain/handle-limits-and-errors)<a href="https://agentmods.dev/skills/egocen-vivideo/vivideo-toolchain/handle-limits-and-errors"><img src="https://agentmods.dev/badge/skills/egocen-vivideo/vivideo-toolchain/handle-limits-and-errors/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.
<a href="https://agentmods.dev/skills/egocen-vivideo/vivideo-toolchain/handle-limits-and-errors"><img src="https://agentmods.dev/badge/skills/egocen-vivideo/vivideo-toolchain/handle-limits-and-errors.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00040 | $0.00655 |
| Opus 5 | $0.00020 | $0.00328 |
| Sonnet 5 | $0.00008 | $0.00131 |
| Haiku 4.5 | $0.00004 | $0.00065 |
Grade A, and why
handle-limits-and-errors scanned grade A with 0 findings 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 11d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Handle Vivideo errors, limits & retries
Every Vivideo error is structured: { error: { code, kind, message, retryable, request_id, retry_after_seconds?, details?, links? } }. Branch on code/kind, never on message text. Keep request_id for support.
By kind
-
rate_limited(HTTP 429) — you're sending too fast.- Wait
retry_after_seconds, then retry the same request. The client already backs off, but if you see this, slow your own loop down. Don't fan out parallel calls.
- Wait
-
insufficient_credits(402) — not enough credits.- Not retryable. Tell the user to buy credits at
links.buy_credits. Don't retry the create.
- Not retryable. Tell the user to buy credits at
-
upgrade_required/free_limit_reached(403) — needs a premium plan (or the one free video is used).- Not retryable. Give
links.upgrade. A free account's create returns apreviewinstead of rendering — seerender_previewafter they upgrade.
- Not retryable. Give
-
duplicate(duplicate_request/idempotency_in_flight, 409) — an identical create is already in flight.- Don't create again. Use the existing video (
details.existing_video_idif present) or wait and check status. Send anidempotency_keyto make retries safe — seeavoiding-duplicate-generations.
- Don't create again. Use the existing video (
-
invalid_request(400, incl.unknown_model,invalid_url) — bad input.- Not retryable as-is. Read
details.allowed/details.fieldand fix the input, then retry once with a valid value.
- Not retryable as-is. Read
-
auth(401) — missing/invalid/revoked key.- Not retryable. Ask the user to set a valid
VIVIDEO_API_KEY/ runvivideo configure.
- Not retryable. Ask the user to set a valid
-
server(5xx /upstream_error) andnetwork(timeout) — transient.- Retryable with backoff. The client retries a bounded number of times automatically; if it still fails, tell the user and keep the
request_id.
- Retryable with backoff. The client retries a bounded number of times automatically; if it still fails, tell the user and keep the
Retry rules
- Retry only when
retryable: true(rate_limited, server, network). - Honor
retry_after_secondson 429. - Bounded attempts + exponential backoff (the client does this; don't add your own tight retry loop on top).
- Never retry
insufficient_credits,upgrade_required,auth, or an unchangedinvalid_request.
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.
- 11d ago First seen · 42 lines · 40 tokens per session scan A 00ec62e3d6ab
handle-limits-and-errors is a skill published in the GitHub repository egocen-vivideo/vivideo-toolchain (0 stars, last pushed 1mo ago), licensed MIT. It adds 40 tokens to every session and 655 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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