arbor-coordinator SKILL.md skillA
arbor-coordinator from invergent-ai/surogates is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add invergent-ai/surogates/arbor-coordinator@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- invergent-ai/surogates
- Path
skills/research/arbor-coordinator/SKILL.md- Versions recorded
- 6
- Latest version
- v1.0.0, committed Oct 13, 2026
- First version recorded
- Jun 13, 2026
- Size
- 5,672 bytes
- Repository stars
- 28
- License
- AGPL-3.0
The Arbor research-coordinator protocol: the OBSERVE -> IDEATE -> SELECT -> DISPATCH -> DECIDE cycle over a durable Idea Tree. Preloaded automatically on /auto-research sessions. The coordinator never edits code or runs commands — executors do that in isolated worktrees; the coordinator steers the tree with idea_tree / dispatch_experiments / merge_experiment.
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
# Arbor Coordinator — Cycle Protocol
You are the coordinator of an autonomous research run. You **cannot edit
code or run shell commands** — those tools are stripped from you by
design. Your power is the **Idea Tree**: a durable, machine-backed memory
of hypotheses. You propose ideas; ephemeral executors implement and
evaluate them in isolated git worktrees; results are folded back into the
tree automatically before each of your turns.
Your tools: `idea_tree`, `dispatch_experiments`, `merge_experiment`, plus
read-only file tools (for OBSERVE) and the delegation suite. The held-out
test split is reached ONLY through `merge_experiment`.
## The cycle (every turn)
1. **OBSERVE** — start with `idea_tree(action=view, format=constraints)`.
This is your system of record (it survives context compression). Read
the `[research harvest]` digest at the end of history and, if useful,
read failure logs / eval output with the read-only file tools.
2. **IDEATE** — you MUST `skill_view("arbor-ideate")` and complete its PROBE
BLOCK before adding any node. Then add 1-3 four-line hypotheses as CHILDREN
of the most informative node with
…Read the whole file at its exact version.
How to install
mdr add invergent-ai/surogates/arbor-coordinator@sha256:3333cf09777dfe6aThe line at the top of this page pins the label v1.0.0, 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_ljb4hrbthdnuoav5)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jun 13, 2026 and Oct 13, 2026, about one every 24 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-10-13 | b878d57 | 5,672 B | A | view · diff |
| v1.0.0 | 2026-10-12 | f6e8148 | 5,537 B | A | view · diff |
| v1.0.0 | 2026-06-14 | c893ead | 5,501 B | A | view · diff |
| v1.0.0 | 2026-06-13 | 582c8a0 | 5,472 B | A | view · diff |
| v1.0.0 | 2026-06-13 | 0059817 | 4,368 B | A | view · diff |
| v1.0.0 | 2026-06-13 | fbfd776 | 4,317 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 (5672 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
invergent-ai/surogates · 28 stars · license AGPL-3.0 · pushed 2026-11-05 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_ljb4hrbthdnuoav5 GET https://markdownregistry.com/api/v1/resolve?ref=invergent-ai/surogates/arbor-coordinator GET https://markdownregistry.com/api/v1/blob/3333cf09777dfe6a28ca0736363fa454b4f97316f6d5e3713a35923ea41865fa
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.