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https://github.com/fabro-sh/fabro.git
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f5f921aa3c
## Summary
Workflow agents previously always received the `agent:run_tools` JWT
scope and had Fabro run tools registered unconditionally. This PR makes
Fabro run tool access an explicit per-run opt-in via `[run.agent]
fabro_tools = true`, defaulting to `false`.
## What changed
**Config layer** (`fabro-types`, `fabro-config`): `RunAgentSettings`
gains a `fabro_tools: bool` field (serialized with `#[serde(default)]`
for backward compatibility). The corresponding `RunAgentLayer` gets an
optional `fabro_tools: Option<bool>` that resolves to `false` when
absent. Layer merging follows the existing `Combine` macro semantics, so
a workflow-level `false` overrides a user-level `true`.
**Server** (`fabro-server`): `worker_command` gains an
`agent_fabro_tools_enabled: bool` parameter. The server reads
`run_state.spec.settings.run.agent.fabro_tools` from the stored run
before spawning `__run-worker`, then issues the worker JWT with either
`["run:worker"]` or `["run:worker", "agent:run_tools"]` accordingly.
`WorkerScopeSet::run_worker()` loses its `#[cfg(test)]` gate so it's
available in production paths.
**CLI worker** (`fabro-cli`): `FabroRunToolServices` construction is now
gated on `run_spec.settings.run.agent.fabro_tools` rather than being
unconditional. The resolved run spec already carries the setting, so no
env-var parsing is needed in the runner.
**Tests**: The single monolithic
`worker_command_always_sets_worker_token_env` test is replaced by two
focused tests — one confirming the default scope is `["run:worker"]`
only, and one confirming the opt-in scope includes `agent:run_tools`.
Shared assertion logic is extracted into
`assert_worker_command_passes_token_only_by_env` and
`worker_token_claims` helpers. Config resolver tests cover default,
explicit true/false, and layer-override behavior.
**Docs**: `[run.agent]` description and reference tables are updated; a
new `run-configuration.mdx` section explains the opt-in semantics before
the existing `[run.agent.mcps]` section.
### Plan Summary
- 1. Add `fabro_tools` to resolved and layered run config, with resolver
tests.
- 2. Gate worker JWT scope and pass setting from stored run state into
`worker_command`.
- 3. Gate CLI `FabroRunToolServices` construction on the resolved
setting.
- 4. Update docs generator sample and public reference/execution docs.
- 5. Full verification pass (nextest, fmt, clippy).
### Fabro Details
<details>
<summary>Ran 9 stages in 54m 4s for $15.21</summary>
| Stage | Duration | Cost | Retries |
|---|---|---|---|
| start | 0s | – | 0 |
| toolchain | 1s | – | 0 |
| preflight_compile | 2m 4s | – | 0 |
| preflight_lint | 2m 18s | – | 0 |
| implement | 28m 5s | $10.58 | 0 |
| simplify_opus | 12m 4s | $2.86 | 0 |
| simplify_gpt | 5m 19s | $1.77 | 0 |
| verify | 3m 37s | – | 0 |
| fmt | 3s | – | 0 |
| **Total** | **54m 4s** | **$15.21** | **0** |
</details>
<details>
<summary>Ran <code>ImplementPlan.fabro</code> (12 nodes and 15
edges)</summary>
```dot
digraph ImplementPlan {
graph [
goal="Implement and simplify",
model_stylesheet="
* { model: claude-opus-4-7; }
"
]
rankdir=LR
start [shape=Mdiamond, label="Start"]
exit [shape=Msquare, label="Exit"]
toolchain [label="Toolchain", shape=parallelogram, script="command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1", max_retries=0]
preflight_compile [label="Preflight Compile", shape=parallelogram, script="cargo check -q --workspace 2>&1", max_retries=0]
preflight_lint [label="Preflight Lint", shape=parallelogram, script="cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1", max_retries=0]
fix_lints [label="Fix Lints", prompt="The preflight lint step failed. Read the build output from context and fix all clippy lint warnings.", max_visits=3]
implement [label="Implement", prompt="Read the plan file referenced in the goal and implement every step. Make all the code changes described in the plan. Use red/green TDD."]
simplify_opus [label="Simplify (Opus)", prompt="@prompts/simplify.md"]
simplify_gpt [label="Simplify (GPT-55)", prompt="@prompts/simplify.md", model="gpt-55"]
verify [label="Verify", shape=parallelogram, script="cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1 && cargo nextest run --cargo-quiet --workspace --status-level fail 2>&1 && cargo dev docs refresh 2>&1 && cargo dev docs check 2>&1", goal_gate=true, retry_target="fixup"]
fixup [label="Fixup", prompt="The verify step failed. Read the build output from context and fix all clippy lint warnings, test failures, and generated docs errors.", max_visits=3]
fmt [label="Format", shape=parallelogram, script="cargo +nightly-2026-04-14 fmt --all 2>&1", max_retries=0]
start -> toolchain
toolchain -> preflight_compile [condition="outcome=succeeded"]
toolchain -> exit
preflight_compile -> preflight_lint [condition="outcome=succeeded"]
preflight_compile -> exit
preflight_lint -> implement [condition="outcome=succeeded"]
preflight_lint -> fix_lints
fix_lints -> preflight_lint
implement -> simplify_opus -> simplify_gpt -> verify
verify -> fmt [condition="outcome=succeeded"]
verify -> fixup
fixup -> verify
fmt -> exit
}
```
</details>
⚒️ Generated with [Fabro](https://fabro.sh)
---------
Co-authored-by: Fabro <noreply@fabro.sh>
Co-authored-by: fabro-agent <agent@fabro.local>
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| .. | ||
| src | ||
| tests/it | ||
| Cargo.toml | ||