compare-trajectories SKILL.md skillA
compare-trajectories from understudylabs/orchestra-agent-tools is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add understudylabs/orchestra-agent-tools/compare-trajectories@git:20260719.1185398Pins git:20260719.1185398 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- understudylabs/orchestra-agent-tools
- Path
skills/compare-trajectories/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260719.1185398, committed Jul 19, 2026
- First version recorded
- Jun 9, 2026
- Size
- 10,306 bytes
- Repository stars
- 19
- License
- MIT
Use when you need to know HOW two model runs differ behaviorally on the same tasks, not just THAT one scores higher — per-task trajectory diffing that classifies the gap as persistence/recovery, knowledge, or format/parsing. "why does the bigger model pass these", "is this gap RL-shaped", "diff these two trajectory runs", "where do the trajectories diverge", "what would distillation buy me". The behavioral complement to compare-model-sweep.
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
# Compare Trajectories Use this worker when [`../compare-model-sweep/SKILL.md`](../compare-model-sweep/SKILL.md) has already told you *that* model A and model B score differently on a frozen eval, and the next question — the one that decides whether to spend RL budget — is **HOW their trajectories differ, step by step, on the same tasks.** A pass-rate delta is a scalar; it cannot tell you whether the stronger model wins because it tries longer, because it knew the right endpoint, or because the weaker model's tool-calls were malformed. Those three answers point at three different fixes — RL, retrieval/world-knowledge, or decoding/prompt — and only a per-task trajectory diff separates them. This skill aligns two (or more) run exports by task id, builds the outcome-delta matrix, computes behavioral divergence on shared tasks, **classifies each reachable-gap task**, and counts how many clean warm-start trajectories the comparison yields. It reads trajectory JSON that already exists on disk; it does not run models. To produce the trajectories, run [`../run-local-model-lab/SKILL.md`](../run-local-model-lab/SKILL.md) or …
Read the whole file at its exact version.
How to install
mdr add understudylabs/orchestra-agent-tools/compare-trajectories@sha256:f2ce215676583043The line at the top of this page pins the label git:20260719.1185398, 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_lbkxkme5pv4igvnu)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jun 9, 2026 and Jul 19, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260719.1185398 latest | 2026-07-19 | 1185398 | 10,306 B | A | view · diff |
| git:20260619.75e83db | 2026-06-19 | 75e83db | 9,981 B | A | view · diff |
| git:20260609.050d8ac | 2026-06-09 | 050d8ac | 10,068 B | A | view · diff |
| git:20260609.64eea13 | 2026-06-09 | 64eea13 | 9,940 B | A | view · diff |
| git:20260609.14cd52c | 2026-06-09 | 14cd52c | 9,398 B | A | view |
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 (10306 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
understudylabs/orchestra-agent-tools · 19 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lbkxkme5pv4igvnu GET https://markdownregistry.com/api/v1/resolve?ref=understudylabs/orchestra-agent-tools/compare-trajectories GET https://markdownregistry.com/api/v1/blob/f2ce21567658304398e1e78da6eda7c309bf3f84c6387b18de8eb76ce4019b27
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.