pts-pivotal-token-search SKILL.md skillA
pts-pivotal-token-search from lambdasec/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add lambdasec/skills/pts-pivotal-token-search@git:20261023.5b089c2Pins git:20261023.5b089c2 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- lambdasec/skills
- Path
skills/pts-pivotal-token-search/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261023.5b089c2, committed Oct 23, 2026
- Size
- 8,000 bytes
- Repository stars
- 3
- License
- Apache-2.0
Use PTS (Pivotal Token Search) to find the tokens, sentences and latent concepts that change whether a language model solves a task, read the resulting events file, explore it in the visualizer, and export it as datasets. Use when the user wants to analyze reasoning steps of a small local model, interpret a PTS events file, or plan a search.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
Use this skill when the user wants to find which reasoning events change a language model's chance of solving a task, using PTS (https://github.com/codelion/pts). Do not use it for hosted-model advice or for general prompt tuning. Ask before anything downloads model weights or datasets. Searches are slow and sample many continuations, so state the cost before starting one. Work on local files only. Do not run `pts push` or `pts export --hf-push` unless the user explicitly asks to publish. ## 1. What PTS measures PTS searches for events, scores each by how much it changes the model's probability of reaching a correct answer, labels them with one shared vocabulary, and can link them into chains. The score idea is `outcome_with_event - outcome_without_or_altered_event`. | Scale | What it finds | Scoring | |---|---|---| | Latent | Concepts active in mid-layer activations, not yet emitted (called meta-tokens) | Readout score from a lens | | Token | Emitted tokens that flip success probability | `P(success \| prefix+token) - P(success \| prefix)` | …
Read the whole file at its exact version.
How to install
mdr add lambdasec/skills/pts-pivotal-token-search@sha256:06ff9a7ab2c51d48The line at the top of this page pins the label git:20261023.5b089c2, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_posusi75asx2nc66)
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Versions
The registry has recorded 1 version of this file, committed on Oct 23, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8000 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
lambdasec/skills · 3 stars · license Apache-2.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_posusi75asx2nc66 GET https://markdownregistry.com/api/v1/resolve?ref=lambdasec/skills/pts-pivotal-token-search GET https://markdownregistry.com/api/v1/blob/06ff9a7ab2c51d488e56d46b6386d2d38128276cd6d3e68572cf83982aca6884
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.