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 nullhack/temple8 --skill record-cassettegit clone --depth 1 https://github.com/nullhack/temple8Wrote 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/nullhack/temple8/record-cassette)<a href="https://agentmods.dev/skills/nullhack/temple8/record-cassette"><img src="https://agentmods.dev/badge/skills/nullhack/temple8/record-cassette/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/nullhack/temple8/record-cassette"><img src="https://agentmods.dev/badge/skills/nullhack/temple8/record-cassette.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 | $0.00028 | $0.00362 |
| Opus 5.5 | $0.00011 | $0.00145 |
| Sonnet 5.5 | $0.00006 | $0.00072 |
| Haiku 4.5 | $0.00003 | $0.00036 |
Grade A, and why
record-cassette 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 1mo 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.
What it actually says
Record Cassette
- Load [[software-craft/external-fixtures]] — the recorder and scrub-field kind-dispatch table.
- Execute the probe script and capture the real request/response with the transport-appropriate recorder.
- IF HTTP THEN record with vcrpy and
decode_compressed_response=Trueso gzip/br bodies are stored decoded, not opaque blobs per [[software-craft/external-fixtures]]. Dispatch the recorder on the service kind (HTTP API, external database, message queue, object storage, other) — the recorder is the one knob that varies per kind. - Scrub the cassette to deterministic and safe-to-commit. IF HTTP THEN
filter_headersstripsAuthorizationandbefore_record_responsestrips volatile headers —date,age,server,last-modified,content-encoding,transfer-encoding,vary,cf-ray,report-to,nel. Dispatch the scrub-field list on the service kind. - IF a cassette has an opaque/churning body or a leaked secret THEN it fails the external contract — re-scrub before commit.
- Append to the shared external-contracts notes the confirmed endpoint base, auth scheme, gotchas, AND the exact request shape captured per interaction (method, path, query parameters, required headers). The cassette is the contract and vcr matches on the request, so the implementer must reproduce this exact shape — record it explicitly, do not leave it implicit in the cassette.
- IF the live exchange contradicts the research or the interview THEN signal a mismatch.
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.
- 1mo ago First seen · 15 lines · 28 tokens per session scan A d01306a58f21
record-cassette is a skill published in the GitHub repository nullhack/temple8 (11 stars, last pushed 29d ago), licensed MIT. It adds 28 tokens to every session and 362 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.
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