AGENTS.mdA
AGENTS.md from pmatos/jsse is an AGENTS.md file: the standing instructions coding agents read in that repo.
mdr add pmatos/jsse/AGENTS.md@git:20261019.d60f0cePins git:20261019.d60f0ce in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 14 of 14 checks passed
- Kind
- AGENTS.md file
- Repository
- pmatos/jsse
- Path
AGENTS.md- Versions recorded
- 20
- Latest version
- git:20261019.d60f0ce, committed Oct 19, 2026
- First version recorded
- Oct 11, 2026
- Size
- 17,638 bytes
- Repository stars
- 73
- License
- MIT
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
# JSSE - JavaScript Engine in Rust ## Project Overview A from-scratch JavaScript engine implemented in Rust. No JS parser/engine libraries allowed as dependencies — every detail must be implemented by us. Utility crates (parsing combinators, math, etc.) are fine. **GitHub repo: `pmatos/jsse`** — always use this owner/repo for GitHub MCP calls. **Ultimate goal: 100% test262 pass rate.** ## Repository Layout - `spec/` — ECMAScript spec submodule (tc39/ecma262). **NEVER modify.** - `test262/` — Test suite submodule (tc39/test262). **NEVER modify.** - `tests/` — Custom tests that don't fit test262. ## Key Rules 1. **Never modify** files in `spec/` or `test262/` submodules. 2. No importing a JS parser or engine crate. Implement everything from scratch. 3. Dependencies for parsing utilities, math, etc. are allowed. 4. When implementing a feature, identify relevant test262 tests to validate against. 5. The spec is the ultimate source of truth with respect to JavaScript. Use it to determine the syntax and semantics of operations. 6. For debugging and comparison, `node` is available as a reference engine. Authority order: (1) ECMAScript spec, (2) test262, (3) node. …
Read the whole file at its exact version.
How to install
mdr add pmatos/jsse/AGENTS.md@sha256:b07573d1788e7ff8The line at the top of this page pins the label git:20261019.d60f0ce, 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_5hrihvdo5w6vkszv)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 20 versions of this file, between Oct 11, 2026 and Oct 19, 2026, more than one a day. Its first recorded version is graded B and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261019.d60f0ce latest | 2026-10-19 | d60f0ce | 17,638 B | A | view · diff |
| git:20261019.a217156 | 2026-10-19 | a217156 | 51,583 B | B | view · diff |
| git:20261019.ced9e3f | 2026-10-19 | ced9e3f | 50,057 B | B | view · diff |
| git:20261018.c133514 | 2026-10-18 | c133514 | 49,804 B | B | view · diff |
| git:20261018.ead00de | 2026-10-18 | ead00de | 49,289 B | B | view · diff |
| git:20261017.c2e370b | 2026-10-17 | c2e370b | 47,306 B | B | view · diff |
| git:20261017.9dc51be | 2026-10-17 | 9dc51be | 46,346 B | B | view · diff |
| git:20261016.5784ea9 | 2026-10-16 | 5784ea9 | 45,241 B | B | view · diff |
| git:20261016.9ae23c6 | 2026-10-16 | 9ae23c6 | 44,974 B | B | view · diff |
| git:20261016.00bb965 | 2026-10-16 | 00bb965 | 44,404 B | B | view · diff |
| git:20261014.47e29a2 | 2026-10-14 | 47e29a2 | 41,113 B | B | view · diff |
| git:20261014.02e155e | 2026-10-14 | 02e155e | 40,240 B | B | view · diff |
| git:20261014.7a6f334 | 2026-10-14 | 7a6f334 | 39,724 B | B | view · diff |
| git:20261014.787d642 | 2026-10-14 | 787d642 | 38,951 B | B | view · diff |
| git:20261013.d27735e | 2026-10-13 | d27735e | 38,773 B | B | view · diff |
| git:20261012.8fade38 | 2026-10-12 | 8fade38 | 26,468 B | B | view · diff |
| git:20261012.34201ab | 2026-10-12 | 34201ab | 26,436 B | B | view · diff |
| git:20261012.ea5c615 | 2026-10-12 | ea5c615 | 25,192 B | B | view · diff |
| git:20261012.4fa14fa | 2026-10-12 | 4fa14fa | 24,707 B | B | view · diff |
| git:20261011.9703e35 | 2026-10-11 | 9703e35 | 24,192 B | B | view |
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (17638 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
pmatos/jsse · 73 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5hrihvdo5w6vkszv GET https://markdownregistry.com/api/v1/resolve?ref=pmatos/jsse/AGENTS.md GET https://markdownregistry.com/api/v1/blob/b07573d1788e7ff810cefdbe7bb211ba9e3a08c4f33813c0540d43af07dcca61
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: how to write a good AGENTS.md · AGENTS.md vs CLAUDE.md · which agent file does what.