fix(agent_loop): let tinytools' fence policy decide fenced calls on the unary path - #225
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Included review availability: This review used your included allowance. Your plan provides up to 2 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughText-dialect recovery now delegates fenced-markup handling to ChangesFenced XML tool-call recovery
Priority: ⬇️ Low Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix Suggested reviewers: Merge Risk: 🟡 Moderate · up to A user-influenced reply containing a tool-call example in a bare fence may trigger an offered tool, although host approval controls can block it. Resolve or explicitly accept this execution risk before merging. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to Bare-fenced tool-call text in non-streamed responses can now trigger tools where it previously did not. Existing tool permissions still apply, but a quoted example could be mistaken for an intended call. Retained concerns
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A rabbit checks the fenced-call trail Comment |
Tiny Sweeper reviewThis pull request removes the fenced-code safety guard that prevented text-dialect tool recovery from parsing markup inside fenced code blocks. The fence policy is now delegated to `tinytools-agent`, which protects only language-tagged fences. Bare fences are treated as potential tool calls and are recovered. The review found that this change introduces a safety hazard by allowing quoted tool examples inside bare fences to be executed, and recommended against merging. State: Changes requested Review snapshot
Completeness: Complete What changedThe changes remove the `text_dialect_markup_only_in_fenced_code` function and its call in `recover_text_dialect_calls`. The documentation for `TextDialectRecovery` is updated to describe the new fence policy. Unit and integration tests are added and updated to verify the new behavior on both unary and streamed paths. Features
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How this fits togetherflowchart LR
n0["OutputRetryPolicy<br/>changed"]:::changed
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classDef changed fill:#0d4429,stroke:#238636,color:#e6edf3
classDef impacted fill:#161b22,stroke:#6e7681,color:#c9d1d9
classDef flagged fill:#5a1e02,stroke:#d93f0b,color:#ffffff
classDef blocking fill:#67060c,stroke:#f85149,color:#ffffff
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Inline comments:
Review comments at
@crates/tinyagents-integration-tests/tests/e2e_tool_dialects.rs:
- Line 1358: Configure the one-call RunLimits in the harness setup to use
StopWithPartial, then retain the result from the streamed or non-streamed
harness invocation and assert it is Ok. Keep the existing dispatch-count
assertion.
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crates/tinyagents-harness/src/agent_loop/run_loop.rscrates/tinyagents-harness/src/runtime/types.rscrates/tinyagents-integration-tests/tests/e2e_tool_dialects.rs
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Requesting changes: 2 lane(s) blocking, worst finding is high.
Fix or reply to the findings below and push. The next review clears this automatically once they are gone — you should not need to dismiss anything by hand.
$0.0076 · 95,713 in / 6,907 out · 3,828 cached (4%) · ladder/vectors, gpt-5.6-luna, deepseek/deepseek-v4-flash · 711 embedded
critique: $0.0035 · 49,288 in / 1,506 out · 2,036 cached (4%) · gpt-5.6-luna, deepseek/deepseek-v4-flash
security: $0.0029 · 41,466 in / 1,632 out · 1,792 cached (4%) · gpt-5.6-luna
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priority: p1
…he unary path text_dialect_markup_only_in_fenced_code skipped text-call recovery entirely when every <tool_call line sat inside a ``` fence. It ran only on the unary/batch path; the stream scrubber already applies tinytools-agent's protected ranges, which protect language-tagged fences (quoted examples) and deliberately leave bare fences parseable (small models wrap real calls in them). The same bare-fenced call was therefore dispatched when streamed and dropped when not. Remove the guard so both paths use tinytools' one policy. The I-2 unit test now quotes its example under a ```xml fence, which tinytools protects. Refs tinyhumansai/openhuman#6732
…partial stop The one-call cap used the default Error behaviour and the run's result was discarded, so a failed run could still pass on the dispatch count. Stop with partial output and require Ok. Refs tinyhumansai/openhuman#6732
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Requesting changes: 1 lane(s) blocking, worst finding is high.
Fix or reply to the findings below and push. The next review clears this automatically once they are gone — you should not need to dismiss anything by hand.
$0.0218 · 189,412 in / 15,011 out · 9,686 cached (5%) · ladder/vectors, gpt-5.6-luna, deepseek-v4-flash · 711 embedded
critique: $0.0125 · 93,888 in / 4,613 out · 6,105 cached (7%) · gpt-5.6-luna, deepseek-v4-flash
security: $0.0084 · 62,331 in / 1,850 out · 3,581 cached (6%) · gpt-5.6-luna
tests: $0.0004 · 15,362 in / 3,019 out · 0 cached (0%) · deepseek-v4-flash
description: $0.0002 · 7,037 in / 3,033 out · 0 cached (0%) · deepseek-v4-flash
1 participant
Refs tinyhumansai/openhuman#6732
Problem
text_dialect_markup_only_in_fenced_code(run_loop.rs) skipped text-call recovery entirely whenever every line containing<tool_callsat inside a```fence. It ran only on the unary/batch path (recover_text_dialect_calls). The stream scrubber already appliestinytools-agent's protected ranges, which:```xml,```text), so a quoted example is never parsed;So the same bare-fenced call was dispatched when streamed and dropped when unary. The guard also added nothing for tagged fences, because tinytools already protects those on both paths.
Change
tinytools-agent's single decision, on both paths.text_dialect_markup_inside_a_fenced_code_block_is_never_recoverednow quotes its example under```xml. Its doc notes that a bare fence is unprotected.TextDialectRecoverydocs: they no longer claim "fenced code is always skipped". They state the tinytools policy and note thatAutois consulted on the unary path only; the stream scrubber does not consult it (openhuman#6733, filed separately as a product decision).Tests (
e2e_tool_dialects.rs, each asserting unary and streamed,max_model_calls: 1)a_bare_fenced_call_is_dispatched_unary_and_streameda_language_tagged_fenced_call_is_not_dispatched_unary_or_streamedrun_loop.rsfails exactly the bare-fence unary assertion (left 0, right 1).agent_loop/test.rs,native_tool_calling_model_does_not_execute_quoted_text_dialect_markup) is unchanged and green.Autostill skips unary recovery for a native model.Lanes run locally:
cargo fmt --all -- --checkcargo clippy -p tinyagents-harness -p tinyagents-integration-tests --all-targets -- -D warningstinyagents-integration-tests, in fulltinyagents-harness --lib(1366 passed)Notes
773c0432, head6d3f1d68).recover_text_dialect_callsmerged cleanly: the guard is gone, and fix(agent_loop): nudge when a text-dialect tool block is claimed but undecodable #224's&recovery.droppedargument is kept. On main the only conflict was the shared tail ofe2e_tool_dialects.rs, and that file was rebuilt as main's file plus this PR's block. After the rebase, all 9 of fix(agent_loop): nudge when a text-dialect tool block is claimed but undecodable #224's and this PR's dialect tests are present and green. The full integration package passes,harness --libpasses (1371), and the revert-check against main'srun_loop.rsstill fails exactly the unary bare-fence assertion.TextDialectRecovery(openhuman#6733).Summary by CodeRabbit
Behavior Changes
Tests
CI note: tinysweeper/review on bc91f44 failed with "did not finish within 900s" (bot-side timeout, no findings); advisory, not a required check.