overcast-pinpoint

overcast-pinpoint is a skill for Claude Code from kdr/overcast. It costs 37 tokens per session (847 once invoked), scanned A, original, Apache-2.0.

A video-search skill for locating the time range where a specific event occurs in a video, then checking the result against visible video frames. It narrows the search from the whole clip to a small verified window.

In plain words
What is it for?
Preparing a video for analysis, finding likely moments, checking candidate frames, narrowing the timing, and reporting a verified time window with a key frame.
Why use it?
It avoids relying on a guessed timestamp and provides visual evidence for when the event actually happens.

Skill for Claude Code

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

Part of the overcast plugin — 35 skills, 1 hook shipped together

Good fit Preparing a video for analysis, finding likely moments, checking candidate frames, narrowing…

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Install with agentmods
npx agentmods add skills/kdr/overcast/overcast-pinpoint
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 kdr/overcast --skill overcast-pinpoint
Clone the repo
git clone --depth 1 https://github.com/kdr/overcast

Made for: Claude Code.

Or install overcast, the plugin that ships this one along with the rest of its 35 skills, 1 hook.

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 overcast-pinpoint

README.md
[![agentmods](https://agentmods.dev/badge/skills/kdr/overcast/overcast-pinpoint.svg)](https://agentmods.dev/skills/kdr/overcast/overcast-pinpoint)
Your own site
<a href="https://agentmods.dev/skills/kdr/overcast/overcast-pinpoint"><img src="https://agentmods.dev/badge/skills/kdr/overcast/overcast-pinpoint.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 847 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00037 $0.00847
Opus 5 $0.00018 $0.00424
Sonnet 5 $0.00007 $0.00169
Haiku 4.5 $0.00004 $0.00085

Measured 7d ago against content hash a39c799e0a6c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

overcast-pinpoint 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 7d 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.

skills/overcast-pinpoint/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

overcast-pinpoint

Use this skill to answer "exactly when does X happen?" in a clip and back it with evidence the model actually looked at. It mirrors the temporal-search pattern from the VLM video literature (T* / VideoAgent): score cheaply over the whole clip, then spend expensive VLM calls only on a few candidate frames and zoom in. Use the broad overcast skill and overcast/reference/verbs.md for exact flags.

Two rules that make the answer trustworthy:

  • Report a window, not a frame. Frame-exact localization is unreliable; emit [t1-t2] plus one verified keyframe.
  • Every timestamp must trace to a frame you see-verified. Never emit a time the model merely guessed — models answer correctly while grounding on the wrong moment, so confirm by looking at the frame.

Workflow

  1. Make the clip local and get a record id (see frame:// needs media on disk — capture a remote clip first). watch also gives per-shot timestamped content to search:
overcast doctor --json
overcast case init --json
overcast watch ./clip.mp4 --json         # -> video.analysis record id (REC)
  1. Get COARSE candidates cheaply (pick what's available):
overcast ask "moments where <X> happens, with timestamps" --json      # over watch shots/notes
overcast grid ./clip.mp4 --count 16 --json                            # one contact sheet ...
overcast see <montage-path> --prompt "which numbered cells show <X>? give cell numbers" --json
overcast similar search "<X>" --index <basic-clip-id> --json          # if a local CLIP index exists
overcast ask "moments <X> happens" --index <media-descriptions-id> --probe --json  # remote index

For grid, translate the chosen cell number to a time via the grid record's payload.cells[n].at (don't trust a model-guessed time). CLIP/shots only SHORTLIST — CLIP is weak on actions/order — so verify next.

  1. VERIFY + zoom on each candidate time T (expensive, precise):
overcast see frame://REC@T --prompt "Is <X> happening here? answer yes/no and what you see" --json
# refine: sample T-d and T+d, halve d each round until adjacent frames flip yes<->no
overcast see frame://REC@<T-2> --prompt "Is <X> happening?" --json
overcast see frame://REC@<T+2> --prompt "Is <X> happening?" --json

Read the full file on GitHub · 80 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. 7d ago First seen · 80 lines · 37 tokens per session scan A a39c799e0a6c

Subscribe to this mod's changes

overcast-pinpoint is a skill published in the GitHub repository kdr/overcast (16 stars, last pushed 3d ago), licensed Apache-2.0. It adds 37 tokens to every session and 847 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 2026-08-30.