browser4-experience SKILL.md skillA
browser4-experience from platonai/browser4 is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add platonai/browser4/browser4-experience@git:20261002.1a5faa7Pins git:20261002.1a5faa7 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- platonai/browser4
- Path
skills/browser4-experience/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261002.1a5faa7, committed Oct 2, 2026
- First version recorded
- Aug 26, 2026
- Size
- 13,132 bytes
- Repository stars
- 1,164
- License
- Apache-2.0
Use experience_save to persist task traces, experience_query to recall them on revisit, and experience_list to inspect stored knowledge. Reuses selectors, extraction patterns, and blocker awareness across sessions.
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
# Progressive Experience Memory (PEM)
The PEM system makes Browser4 **progressively smarter**: each successfully completed task deposits reusable knowledge so that future tasks — identical, similar, or on similar sites — complete faster with fewer steps.
## 1. Core Loop
```
Before task ──▶ experience_query ──▶ Get stored selectors, steps, blockers
│ │
▼ ▼
Execute task P1: Replay directly
│ P2: Verify then replay
▼ P3: Hint mode (verify all)
After task ──▶ experience_save ──▶ P4: Advisory only
P5: Cold start (no knowledge)
```
### Copy-Paste Template
The experience tools are **MCP tools** called by the agent during `browser4-cli agent run`. The agent should call them as part of its tool set:
```bash
# Before starting a task — the agent calls experience_query to check prior knowledge
# After completing a task — the agent calls experience_save to persist what it learned
browser4-cli agent run "Go to https://amazon.com/dp/test and extract product details"
…Read the whole file at its exact version.
How to install
mdr add platonai/browser4/browser4-experience@sha256:757b71349aecbc16The line at the top of this page pins the label git:20261002.1a5faa7, 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_3xzvfy2ari3laz55)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Aug 26, 2026 and Oct 2, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261002.1a5faa7 latest | 2026-10-02 | 1a5faa7 | 13,132 B | A | view · diff |
| git:20260912.695100d | 2026-09-12 | 695100d | 12,566 B | A | view · diff |
| git:20260910.8eabd1a | 2026-09-10 | 8eabd1a | 8,093 B | A | view · diff |
| git:20260909.15e6ea1 | 2026-09-09 | 15e6ea1 | 9,055 B | A | view · diff |
| git:20260826.ac7c2f1 | 2026-08-26 | ac7c2f1 | 7,315 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 (13132 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
platonai/browser4 · 1,164 stars · license Apache-2.0 · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3xzvfy2ari3laz55 GET https://markdownregistry.com/api/v1/resolve?ref=platonai/browser4/browser4-experience GET https://markdownregistry.com/api/v1/blob/757b71349aecbc16f4d6c824b64ae21a21bbbdd36bad5d9f14cff17eb7ead559
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.