AGENTS.md@sdkA
AGENTS.md@sdk from vercel-labs/fx is an AGENTS.md file: the standing instructions coding agents read in that repo.
mdr add vercel-labs/fx/sdk/AGENTS.md@git:20261017.dc007cePins git:20261017.dc007ce in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 14 of 14 checks passed
- Kind
- AGENTS.md file
- Repository
- vercel-labs/fx
- Path
sdk/AGENTS.md- Versions recorded
- 23
- Latest version
- git:20261017.dc007ce, committed Oct 17, 2026
- First version recorded
- Aug 11, 2026
- Size
- 12,441 bytes
- Repository stars
- 3,489
- License
- Apache-2.0
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
# WebAssembly SDK instructions These instructions apply to work under `sdk/` and supplement the repository-level `AGENTS.md`. This file is maintainer guidance, not consumer documentation. Keep setup and the supported public surface in `sdk/README.md`. Keep exact API shapes in `sdk/fx-sdk.js`, its tests, and the declarations in `sdk/types/`. Add details here only when they help an agent choose the right owner, preserve a non-obvious invariant, or run the right proof. The native Node-API architecture and security model are documented in `sdk/NAPI.md`. ## Start from the correct owner The SDK has two WebAssembly surfaces and one shared JavaScript host layer: | Concern | Source of truth | | --- | --- | | Shared loader, host imports, adapters, and public JavaScript exports | `sdk/fx-sdk.js` | | Headless ACP composition for `fx-core.wasm` | `src/wasm_core_main.zig` | | Interactive terminal entry point for `fx-term.wasm` | `src/wasm_term_main.zig` and `runWasmTerminal` in `src/main.zig` | | Native and WebAssembly capability policy | `src/core/hosts/runtime_profile.zig` | | Host-backed terminal session persistence | `src/core/app/app_session_runtime.zig` and `sdk/fx-sdk.js` | …
Read the whole file at its exact version.
How to install
mdr add vercel-labs/fx/sdk/AGENTS.md@sha256:5c19e3ccfcb6cd60The line at the top of this page pins the label git:20261017.dc007ce, 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_swt5egwhwpaa7pfl)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 23 versions of this file, between Aug 11, 2026 and Oct 17, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261017.dc007ce latest | 2026-10-17 | dc007ce | 12,441 B | A | view · diff |
| git:20261017.6584534 | 2026-10-17 | 6584534 | 12,247 B | A | view · diff |
| git:20261015.4e1056d | 2026-10-15 | 4e1056d | 11,336 B | A | view · diff |
| git:20261015.9fbdb1d | 2026-10-15 | 9fbdb1d | 12,256 B | A | view · diff |
| git:20261015.7513b2c | 2026-10-15 | 7513b2c | 12,256 B | A | view · diff |
| git:20261014.542f00b | 2026-10-14 | 542f00b | 11,130 B | A | view · diff |
| git:20261014.9534bf7 | 2026-10-14 | 9534bf7 | 11,142 B | A | view · diff |
| git:20261013.d0fcacb | 2026-10-13 | d0fcacb | 11,140 B | A | view · diff |
| git:20261013.871e93d | 2026-10-13 | 871e93d | 10,460 B | A | view · diff |
| git:20261013.e73bc45 | 2026-10-13 | e73bc45 | 10,959 B | A | view · diff |
| git:20261013.354a332 | 2026-10-13 | 354a332 | 10,950 B | A | view · diff |
| git:20261012.fcff927 | 2026-10-12 | fcff927 | 10,762 B | A | view · diff |
| git:20261009.9fdbeb4 | 2026-10-09 | 9fdbeb4 | 10,082 B | A | view · diff |
| git:20261009.8de5bf9 | 2026-10-09 | 8de5bf9 | 10,005 B | A | view · diff |
| git:20261007.b0d83eb | 2026-10-07 | b0d83eb | 9,501 B | A | view · diff |
| git:20261007.607b163 | 2026-10-07 | 607b163 | 8,555 B | A | view · diff |
| git:20261003.2777fe3 | 2026-10-03 | 2777fe3 | 8,560 B | A | view · diff |
| git:20261001.c6b629e | 2026-10-01 | c6b629e | 7,955 B | A | view · diff |
| git:20260901.3f59a59 | 2026-09-01 | 3f59a59 | 7,960 B | A | view · diff |
| git:20260820.e04ca39 | 2026-08-20 | e04ca39 | 7,964 B | A | view · diff |
| git:20260817.1fc58ed | 2026-08-17 | 1fc58ed | 7,893 B | A | view · diff |
| git:20260816.09deb7f | 2026-08-16 | 09deb7f | 7,783 B | A | view · diff |
| git:20260811.439f83c | 2026-08-11 | 439f83c | 7,718 B | A | view |
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (12441 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
vercel-labs/fx · 3,489 stars · license Apache-2.0 · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_swt5egwhwpaa7pfl GET https://markdownregistry.com/api/v1/resolve?ref=vercel-labs/fx/sdk/AGENTS.md GET https://markdownregistry.com/api/v1/blob/5c19e3ccfcb6cd608471553941e7c06d1c3ba31829c2e6706a579aa14eb704ed
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Guides: how to write a good AGENTS.md · AGENTS.md vs CLAUDE.md · which agent file does what.