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fix(search): stop re-offering search a session cannot use - #7004
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A resolvable credential made the managed route look reachable, so a core that is offline, firewalled, out of balance or holding a dead key answered every call with "unavailable right now" and the agent kept trying. The verdict is now final for the session: the message tells the model to stop, the result is tagged as a permanent failure, and the session's three web tools share the latch so later calls answer without a module round-trip. Closes tinyhumansai#6991
Tiny Sweeper reviewTiny Sweeper reviewed this change across 6 lane(s) and found 3 active actionable finding(s). Detailed lane evidence and any incomplete work are listed below. State: Changes requested Review snapshot
Completeness: Complete What changedThe review could not produce a supported behavioral summary; inspect the cited changed surface and lane details below. FeaturesNone identified with supported citations. TestsNo supported feature-to-test mapping was produced. Test execution is not inferred. Findings
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Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 9 remain after this review. 📝 WalkthroughWalkthroughTinySearchTool records the provider configuration signature when search returns ChangesSearch Exhaustion Behavior
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant Agent
participant TinySearchTool
participant SearchModule
Agent->>TinySearchTool: Call search
TinySearchTool->>SearchModule: Execute search for current configuration
SearchModule-->>TinySearchTool: Return UNAVAILABLE
TinySearchTool->>TinySearchTool: Record exhausted configuration signature
TinySearchTool-->>Agent: Return failed result with stop-calling message
Agent->>TinySearchTool: Call search again with the same configuration
TinySearchTool-->>Agent: Return failed result without executing search
Suggested reviewers: Merge Risk: ⚪ Minimal · up to The signature concern does not block search recovery under a changed effective provider configuration. No actionable merge-blocking issue is established. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change does not demonstrably expand access or weaken the existing privacy restriction. Its main risk is that search can remain blocked after credentials or provider settings have been repaired. Retained concerns
Security review detailsSecurity Blast Radius
Trust Boundaries and Controls
Resilience and Maintainability Implications
🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation Issue Resolution Make the exhaustion decision prevent further calls across the session’s offered search tools, and coordinate concurrent calls so only one reaches the module before the first exhaustion verdict is recorded. Add tests that exercise an actual UNAVAILABLE response and verify sequential and concurrent calls across the search tools do not make additional module calls.
A rabbit taps the search-call gate, Comment ✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
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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.
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critique: $0.0050 · 97,264 in / 4,627 out · 6,330 cached (7%) · gpt-5.6-luna, glm-5.3-flash
security: $0.0047 · 82,129 in / 4,212 out · 7,464 cached (9%) · gpt-5.6-luna
tests: $0.0028 · 40,069 in / 8,245 out · 4,608 cached (12%) · glm-5.3-flash
description: $0.0006 · 9,239 in / 649 out · 0 cached (0%) · glm-5.3-flash
e2e: $0.0003 · 38,779 in / 1,143 out · 10,368 cached (27%) · glm-5.3-flash
| )) | ||
| } | ||
| Err(error) => { | ||
| if exhausts_providers(&error) { |
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Allow provider configuration changes to recover search
Deferred tools resolve live configuration on each call, and the module contract says provider or login changes are honored without rebuilding the session. After any UNAVAILABLE response, however, this latch permanently refuses all subsequent calls, so a user who adds a key, restores connectivity, or changes the provider during the session still receives SEARCH_EXHAUSTED_MESSAGE and cannot recover. Do not make this state permanent across live configuration changes; either clear/version the latch when the effective search configuration changes or avoid latching the deferred tool path.
[RULE] stale-session-state ·
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Fixed in 4726dd8. This was the right call and the contract I broke is documented at the top of this very file: every call re-reads the live config "so a provider or login change is honoured on the next call without rebuilding the session". A permanent latch made that false.
The refusal is now keyed to a provider signature rather than latched: provider_signature hashes the tool's role order plus every provider's resolved enabled / usable / key_configured / managed_available / route, and the recorded verdict only answers a later call whose signature matches. Add a key, switch a route, sign in, and the signature moves, so the next call goes through to the module.
the_refusal_answers_only_for_the_configuration_that_failed pins it: the tool records a failure against a key-less config, then the same tool with a Brave key set is not refused.
| /// Only the "every provider is unavailable" verdict qualifies. A rate limit | ||
| /// clears on its own, and a low balance or a rejected argument has its own | ||
| /// message telling the caller what to change, so neither latches. | ||
| pub(crate) fn exhausts_providers(error: &str) -> bool { |
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Latch only errors that prove every provider is unavailable
UNAVAILABLE is a coarse error code, but this function turns any error carrying it into a permanent session-wide latch. A single provider-specific, route-specific, transient, or otherwise recoverable unavailable response will therefore make all search tools return SEARCH_EXHAUSTED_MESSAGE without attempting the module again. Classify exhaustion from the module's explicit all-providers verdict (or include the affected provider/route in the state), rather than equating the generic error code with permanent exhaustion.
[RULE] overbroad-error-classification ·
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Addressed in 4726dd8, though by narrowing the scope rather than by reclassifying the code.
I can't classify exhaustion more precisely from here: UNAVAILABLE is what the module hands back, and a finer "all providers, this route" verdict would have to come from tinysearch, which owns provider dispatch. So instead of treating the coarse code as a session-wide fact, it is now recorded against the configuration and the tool it happened on, and it stops answering as soon as either changes.
What that buys for the transient case you describe: the verdict no longer survives any configuration change, and it never applies to a second tool. A transient outage under an unchanged configuration still costs the rest of that tool's calls in the session, which is the trade the issue asked for ("make the failure final for the session"). If you would rather it expire on time instead, say so and I will add that instead — it is a small change, but it is a different promise and I did not want to pick it unilaterally.
| /// live session do: the roles are three declarations over the same | ||
| /// providers, so one of them finding nothing settles it for all three. | ||
| pub fn recorded_batch(specs: impl IntoIterator<Item = ToolSpec>) -> Vec<Self> { | ||
| let exhausted = Arc::new(AtomicBool::new(false)); |
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Scope the exhaustion latch to the affected search route
This latch is shared by every tool returned from build_search_tools, and once any tool reports UNAVAILABLE, the early-return path prevents all of them from trying again for the rest of the session. That is too broad for the documented provider-tool presentation: one provider-specific failure can disable unrelated providers, and adding a key or recovering from a transient outage cannot restore search without rebuilding the session. Scope the state to the provider/route that failed, or invalidate it when the live configuration or provider availability changes.
[RULE] shared-state-latch ·
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Fixed in 4726dd8. The shared latch is gone: build_search_tools is back to plain TinySearchTool::new per spec, recorded_batch is removed, and each tool carries its own record keyed by its own signature — which includes its role order, so two roles drawing on different providers cannot speak for each other.
one_tools_dead_providers_do_not_answer_for_another covers it: a verdict recorded on web_search_tool leaves web_answer_tool free to call.
Worth flagging the cost, since the issue asked for the opposite: in a session where nothing can answer, the agent now makes one call per offered search tool instead of one in total.
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Resolved — the review agent found this finding fixed in the new code, as of 4726dd8.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
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Review comments at
@crates/openhuman-core/src/agent/session_host/recorded_tools.rs:
- Around line 138-155: Update rehydrate_search_tools so live tools created
through build_search_tools and recorded tools created through recorded_batch
share the same exhaustion latch. Preserve the current role selection and
rebuilding behavior while ensuring an UNAVAILABLE result from either group
prevents the other group from issuing another search-module request.
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The latch was session-wide and permanent, which broke this module's contract that every call re-reads the live config so a provider or login change is honoured without rebuilding the session: a key added after the failure stayed refused. It now records the provider signature the call failed under — role order plus every provider's resolved reachability — and refuses only a repeat under that same signature. Per tool, so one tool's dead providers cannot answer for another's.
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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.
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security: $0.0027 · 48,512 in / 1,846 out · 3,732 cached (8%) · gpt-5.6-luna
tests: $0.0002 · 22,782 in / 367 out · 0 cached (0%) · glm-5.3-flash
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e2e: $0.0012 · 12,139 in / 2,598 out · 0 cached (0%) · glm-5.3-flash
| /// Only the "every provider is unavailable" verdict qualifies. A rate limit | ||
| /// clears on its own, and a low balance or a rejected argument has its own | ||
| /// message telling the caller what to change, so neither latches. | ||
| pub(crate) fn exhausts_providers(error: &str) -> bool { |
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Latch only errors that prove every provider is unavailable
This treats every error carrying tinysearch.provider_unavailable as proof that no provider can answer, but the error code alone does not establish that all providers for this request were attempted and failed. A single-provider outage or an unavailable fallback can therefore permanently mark the whole tool exhausted and make subsequent calls return the stop message without trying a still-usable provider. Preserve provider-exhaustion information from the module result and latch only that aggregate verdict.
[RULE] error-classification ·
| } | ||
| } | ||
| for provider in super::providers::resolve(config) { | ||
| provider.id.hash(&mut hasher); |
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Detect replacement of an already configured provider key
The signature records only whether a key is configured, not which key is configured. If a dead or revoked key is replaced with a valid key, both configurations produce the same signature, so the prior UNAVAILABLE result remains latched and search continues to be refused. Include a non-secret fingerprint of the effective credential, or otherwise invalidate the latch when the credential value changes.
[RULE] stale-cache ·
| options: ToolCallOptions, | ||
| ) -> anyhow::Result<ToolResult> { | ||
| let config = self.live_config().await?; | ||
| // Re-read per call, so a key added or a provider switched mid-session |
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Read live configuration before applying the exhaustion latch
For tools created by build_search_tools, live_config() returns the cloned spawn-time Arc<Config> rather than loading current configuration. After an unavailable result is cached, adding a key or switching providers therefore leaves the signature unchanged and causes every subsequent call to be refused, despite the comment and the documented recovery contract. Make normal tools resolve the current configuration per call, or otherwise invalidate/update the cached configuration when settings change.
[RULE] stale-configuration-cache ·
| // Re-read per call, so a key added or a provider switched mid-session | ||
| // clears an earlier refusal instead of outliving it. | ||
| let signature = self.provider_signature(&config); | ||
| if self.is_exhausted_for(signature) { |
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Drive the search-exhaustion refusal through the agent harness end to end
This change's external surface is what the model sees when search is dead: the replacement of the old "unavailable right now" verdict with SEARCH_EXHAUSTED_MESSAGE ("Do not call it again"), the latch that answers a repeat call from the recorded verdict instead of reaching the search module, and the retagging of that verdict from ToolResult::error to ToolResult::failed so the harness does not treat it as retryable. All of it is covered by unit tests that call TinySearchTool::execute directly; nothing drives it through the running system. harness-search-tool-flow.spec.ts covers S3.2/S3.4 only on the happy path, where the mock backend serves results, and the lexical candidate scan shows no e2e file mentioning provider_unavailable, exhaustion or the new refusal text. A test would have to: point the search settings at a configuration whose providers all return tinysearch.provider_unavailable from the mock backend, send a prompt that makes the mock LLM emit web_search_tool (or web_answer_tool) twice in one conversation, and assert the second call is refused with the stop-message and produces no second request to the search module — the exact agent-behaviour #6991 says the hidden run depends on. Without it, a regression that makes the latch never fire or the message revert to a retry hint would pass CI silently.
[RULE] e2e-uncovered ·
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Summary
Problem
providers::backend_credential_availablecounts the managed route as reachable wheneverresolve_backend_credential(config).is_ok(). It asks whether a credential resolves, never whether the search backend can be reached, soresolve_withmarks the managed providers usable andconfigured_tool_specsoffers the tools. Any deployment with a credential and no working search — offline, firewalled, out of balance, dead key, or a bench container whose only route out is the inference proxy — offers them on every turn and fails every call.The old message made it worse:
"right now" reads as an invitation to retry, and nothing recorded that the answer had already been given. In the DeepSWE-10 run cited on the issue the agent called search three times on one task — once for prior art, twice in parallel after hitting an ambiguous line in the spec — got the same refusal each time, then guessed, and the guess was the reading the hidden test rejected.
Solution
Options 1 and 2 from the issue, not 3.
user_facing_errorreturns one constant for the exhaustion verdict,SEARCH_EXHAUSTED_MESSAGE, which says search is not available in this session and not to call it again. The result also goes back asToolResult::failed, which tagsToolErrorKind::Failed— "permanent; do not retry" — instead of the untaggedToolResult::error. Nothing in the harness reads that tag today, so the wording is what does the work now; the tag is the contract-level statement of the same thing, for a harness that starts honouring it.exhausts_providersdecides what is final, and only the "every provider is unavailable" verdict qualifies. A rate limit clears on its own; a low balance and a rejected argument each already carry a message naming what to change. None of those latch.The verdict is stored as the provider signature it failed under, not as a bare flag.
provider_signaturehashes the tool's role order plus every provider's resolvedenabled/usable/key_configured/managed_available/ route, and a later call is refused only when its freshly computed signature matches the recorded one. That keeps this module's documented contract — every call re-reads the live config, so a provider or login change is honoured without rebuilding the session — which a permanent latch would have broken: a key added after the failure would have stayed refused for the rest of the thread.It is recorded per tool rather than shared across the session's tools. The roles draw on different provider orders and the
all_toolspresentation can offer provider-specific tools beside them, so a shared verdict would let one provider's outage disable providers that were never tried.Two notes for review:
provider_unavailableis final for that tool under that configuration. That is the trade the issue asks for ("make the failure final for the session"), narrowed: it never crosses a configuration change or another tool. The cost, which runs against the issue's second acceptance line, is that a session where nothing can answer now makes one call per offered search tool rather than one in total — the alternative was refusing tools on evidence that was never about their providers.UNAVAILABLEis as precise as this layer gets. A finer "all providers, this route" verdict would have to come from tinysearch, which owns provider dispatch; scoping by configuration and by tool is what can be done host-side without guessing.Submission Checklist
search/tools_tests.rs: the verdict tells the model to stop and drops the retry hint, only the exhaustion verdict is final (rate limit, balance, invalid arguments and unclassified all excluded), a tool starts with nothing recorded, adding a provider key clears a recorded refusal, one tool's verdict leaves another free to call, and a refused call returnsToolErrorKind::Failedwithout reaching the module. The existing message assertion was updated to the new wording.exhausts_providers, and the shared-batch constructor.N/A: no feature row added, removed or renamed; this is the failure path of an existing one.## Related—N/A: no matrix feature IDs involved.docs/RELEASE-MANUAL-SMOKE.md) —N/A: no change to release artifacts or the cut process.Closes #NNNin the## RelatedsectionImpact
Behaviour changes only on the failure path. A deployment with working search sees no difference: the same tools, the same results, and
rate_limited/insufficient_balance/invalid_argumentskeep their own messages and stay retryable. A deployment where search cannot work now spends one call learning that instead of one per turn, and stops paying for repeated module round trips. No RPC shape, config key or wire contract changes, and no new dependency — the latch isstd::sync::atomic.Related
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Commit & Branch
fix/6991-search-tool-unavailable4726dd8f7b(revision ofbc75c6f55fafter review)Validation Run
pnpm --filter openhuman-app format:check—N/A: no frontend or formatted file changed; the diff is three Rust files.pnpm typecheck—N/A: no TypeScript changed.RUST_MIN_STACK=16777216 cargo test -p openhuman --lib search::→ 91 passed, 0 failed;--lib recorded_tools→ 10 passed, 0 failed. Restoring the old wording while keeping the new API fails 2 tests, which is the pin on the message.cargo fmt --check -p openhumanclean;cargo clippy -p openhuman --lib -- -D warningsexit 0 with no diagnostics, and again with the product feature set (--no-default-features --features "$(bash scripts/ci/product-features.sh)") exit 0.N/A: no Tauri shell code changed.Validation Blocked
command:N/Aerror:N/Aimpact:N/ABehavior Changes
Parity Contract
role_tools_are_built_for_usable_byok_providers,no_tools_when_search_is_off_or_nothing_is_usable, themodules::search::config_testsset and the render suite all pass unchanged.recorded_tools_keep_their_declarationstill holds, so a rehydrated tool keeps its recorded declaration byte for byte.Duplicate / Superseded PR Handling
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