---
target: "bird"
lane: cli
tier: registry
scorecard_url: "https://anc.dev/score/bird"
markdown_url: "https://anc.dev/score/bird/md"
json_url: "https://anc.dev/score/bird/json"
negotiate: "Accept: text/markdown or Accept: application/json on https://anc.dev/score/bird serve the twin and the JSON"
---

# bird

Rust CLI for the X (Twitter) API

**Score:** 99% pass rate
**Principles:** 7/8 met

## Embed the badge

This score (99%) clears the [badge floor](https://anc.dev/badge) (70%). Copy this into your README:

```markdown
[![agent-native](https://anc.dev/badge/bird.svg)](https://anc.dev/score/bird)
```

| Status | Audit | Principle | Evidence |
|--------|-------|-----------|----------|
| PASS | Help flag produces useful output | [P3](https://anc.dev/p3) |  |
| PASS | Version flag works (`--version` plus short alias) | [P3](https://anc.dev/p3) |  |
| PASS | Version flag works (`--version` plus short alias) | [P3](https://anc.dev/p3) |  |
| PASS | Structured output support | [P2](https://anc.dev/p2) |  |
| PASS | Rejects invalid arguments | [P4](https://anc.dev/p4) |  |
| PASS | Quiet mode available | [P7](https://anc.dev/p7) |  |
| PASS | Handles SIGPIPE gracefully | [P6](https://anc.dev/p6) |  |
| PASS | Non-interactive by default | [P1](https://anc.dev/p1) |  |
| SKIP | Non-interactive gate flag advertised in --help | [P1](https://anc.dev/p1) | target satisfies P1 via alternative gate (help-on-bare or stdin-primary) |
| PASS | Flags advertise env-var bindings in --help | [P1](https://anc.dev/p1) |  |
| SKIP | Pager-using CLI ships --no-pager escape hatch | [P6](https://anc.dev/p6) | no pager signal (less/more/$PAGER/--pager) in --help |
| PASS | Respects NO_COLOR | [P6](https://anc.dev/p6) |  |
| PASS | Secret-bearing flags expose stdin or *-file companion | [P1](https://anc.dev/p1) |  |
| PASS | Structured-output CLI exposes its schema at runtime | [P2](https://anc.dev/p2) |  |
| PASS | --json / --jsonl short aliases for --output | [P2](https://anc.dev/p2) |  |
| WARN | Subcommand verbs follow community-standard names | [P6](https://anc.dev/p6) | 16/31 subcommand(s) follow standard verb names. Non-standard: me, post, put, bookmarks, profile, thread, watchlist, usage, tweet, like, unlike, repost, unrepost, dm, cache. MAY-tier — community-standard verbs (get/list/create/update/delete) help agents predict subcommand behavior across CLIs. |
| PASS | Skill bundle has install path (`tool skill install [<host>]`) | [P8](https://anc.dev/p8) |  |
| PASS | `skill install --all` for multi-runtime install | [P8](https://anc.dev/p8) |  |
| PASS | `skill update` / `skill upgrade` for bundle refresh | [P8](https://anc.dev/p8) |  |
| PASS | `--raw` flag for pipe-safe unformatted output | [P2](https://anc.dev/p2) |  |
| PASS | `--output` advertises additional formats beyond text/json | [P2](https://anc.dev/p2) |  |
| PASS | `examples` subcommand or `--examples` flag for curated usage patterns | [P3](https://anc.dev/p3) |  |
| PASS | `--color` flag for explicit color control | [P6](https://anc.dev/p6) |  |
| PASS | `--verbose` flag for diagnostic escalation | [P7](https://anc.dev/p7) |  |
| PASS | `--limit` / `--max-results` flag for list operations | [P7](https://anc.dev/p7) |  |
| PASS | Cursor-based pagination flags for list traversal | [P7](https://anc.dev/p7) |  |
| PASS | `--help` advertises default values for flags | [P1](https://anc.dev/p1) |  |
| PASS | Rich-TUI affordance for TTY contexts | [P1](https://anc.dev/p1) |  |
| PASS | Short `-h` summary differs from `--help` long form | [P3](https://anc.dev/p3) |  |
| SKIP | Input-accepting commands read from stdin when no file is given | [P6](https://anc.dev/p6) | no input-accepting subcommand detected (process/parse/convert/transform/analyze/validate/format/lint/audit); vacuous skip for the conditional SHOULD. |
| PASS | Subcommand naming follows a consistent verb/noun convention | [P6](https://anc.dev/p6) |  |
| PASS | `--timeout` flag for long-running operations | [P7](https://anc.dev/p7) |  |
| PASS | Bad invocation exits with structured usage-error code (2) | [P2](https://anc.dev/p2) |  |
| PASS | Error messages include a hint or remediation phrase | [P4](https://anc.dev/p4) |  |
| PASS | Errors emit JSON envelope with discriminant + type id + message roles under `--output json` | [P2](https://anc.dev/p2) |  |
| PASS | `--output json` produces JSON-formatted errors | [P4](https://anc.dev/p4) |  |
| PASS | JSON success and error envelopes share their non-payload key set | [P2](https://anc.dev/p2) |  |
| PASS | Each subcommand's `--help` ships at least one invocation example | [P3](https://anc.dev/p3) |  |
| PASS | Help text pairs human and `--output json` example invocations | [P3](https://anc.dev/p3) |  |
| PASS | Command-list entries name the command without repeating the binary name | [P3](https://anc.dev/p3) |  |
| PASS | Operations are subcommands, not verb-shaped flags | [P6](https://anc.dev/p6) |  |
| PASS | Destructive subcommands require `--force` or `--yes` | [P5](https://anc.dev/p5) |  |
| PASS | Read and write surfaces are both visible in subcommand list | [P5](https://anc.dev/p5) |  |
| PASS | Help text advertises TTY-aware verbosity behavior | [P7](https://anc.dev/p7) |  |

**Repo:** [brettdavies/bird](https://github.com/brettdavies/bird)
**Language:** Rust
**Version scored:** 0.2.0
**Audit date:** 2026-10-05 18:44:47 UTC
**Duration:** 391ms
**Platform:** `linux/x86_64`
**Mode:** command
**Anc build:** 0.6.0
**Install:** `brew install brettdavies/tap/bird`

## Reproduce locally

```bash
anc audit --command bird --output json
```