Link reviewed Browser Eval implementation without changing task inputs
Browse files- README.md +8 -8
- manifest.json +1 -1
README.md
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@@ -111,7 +111,7 @@ A method receives the task URL and prompt. Its response is checked against the t
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| Resources | Returned resource URLs, permitted variants, and target-only output requirements where declared |
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| Files | Delivered bytes, declared file type and integrity requirements |
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Contracts can combine these checks. A successful request, nonempty answer or long response alone does not establish task completion. The scorer keeps binary acceptance separate from text-quality diagnostics. Missing reference coverage remains unavailable. Exact requirements and thresholds are in each task; the [metrics guide](https://github.com/lexmount/browser-eval/blob/
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Web Fetch runs call the tested tools directly. An agent does not choose browser actions during execution. Preserve the requested initial-load scope: clicking, logging in, expanding hidden content or paginating changes the work unless a task explicitly permits it. In the article subset, a qualified displayed excerpt is scored as that excerpt, and changing feeds use their own post-collection contracts.
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@@ -163,14 +163,14 @@ From a Browser Eval checkout with [uv](https://docs.astral.sh/uv/getting-started
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```sh
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git clone https://github.com/lexmount/browser-eval.git
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cd browser-eval
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git checkout
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uv sync --frozen
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uv run --frozen python -m harness.benchmarks.data
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uv run --frozen lexbench-webfetch list
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uv run --frozen lexbench-webfetch validate
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```
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Browser Eval downloads the dataset revision selected by its [data lock](https://github.com/lexmount/browser-eval/blob/
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For tasks that need external reference inputs, obtain an approved matching copy and export a verified executable suite:
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--output /absolute/path/new-input-directory
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```
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The scorer's `--suite webfetch` exports the complete mixed suite containing all six viewer groups. It does not select only `web-pages`. Use task IDs or a predeclared filtered executable dataset to run one group. The other four viewer groups retain their own scorer suite IDs. Export verifies the declared inputs before writing a new directory. See [reference inputs and access](https://github.com/lexmount/browser-eval/blob/
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Score a saved response using its complete task definition:
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--case-ids static-simple --output /absolute/path/new-evidence
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```
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The HTTP baseline does not execute JavaScript. For browser setup and a report you can inspect, follow the [runnable local example](https://github.com/lexmount/browser-eval/blob/
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## Reporting and limitations
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Report passed/evaluated counts for the declared population, unavailable results and the selected benchmark and scorer revisions. Retain failed calls and timeouts. State timing boundaries, retry policy, local or remote execution, and conversion steps; keep all-call timing separate from timing conditional on success. Optional independent verification has its own disclosed scope and does not run automatically.
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Live sites change with location, time, session state and access policy. The suite emphasizes task-relevant stable content, but a frozen reference can still become outdated. Investigate source drift before changing a verdict. Updating task requirements or scoring code does not retroactively update an old measurement. Record the immutable dataset commit, task/reference hashes and scorer source identity with each experiment. Detailed collection, correction and reporting rules are maintained in the [Web Fetch guide](https://github.com/lexmount/browser-eval/blob/
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These are curated workloads, not a representative sample of every website. The article suite's initial-load scope does not measure hidden continuations or interaction-dependent content. Text and link checks do not measure visual fidelity or autonomous browser use. This dataset contains task inputs and requirements; it does not ship provider measurements or establish a standing browser ranking.
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@@ -222,11 +222,11 @@ The following projects have separate populations and terms; they are not subsets
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- [WebArena](https://github.com/web-arena-x/webarena) and [WebArena-Verified](https://github.com/ServiceNow/webarena-verified) supply interactive tasks and evaluators used in separate browser workflows.
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- [Lexbench-Headless-Browser](https://github.com/lexmount/Lexbench-Headless-Browser) evaluates headless-browser runtime and automation capabilities.
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For search evaluation, use [LexBench Web Search](https://huggingface.co/datasets/Lexmount/lexbench-websearch). [Moli](https://github.com/lexmount/moli) is one browser that can be evaluated with Web Fetch tasks, and [WebFetch CLI](https://github.com/lexmount/webfetch-cli) is a client for a hosted fetch service. Report creation and sharing are covered by [Browser Eval's reporting documentation](https://github.com/lexmount/browser-eval/blob/
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## Citation
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Cite Browser Eval and record the exact dataset revision used in your experiment. The canonical project citation is [CITATION.cff](https://github.com/lexmount/browser-eval/blob/
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```bibtex
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@software{browser_eval_2026,
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| Resources | Returned resource URLs, permitted variants, and target-only output requirements where declared |
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| Files | Delivered bytes, declared file type and integrity requirements |
|
| 113 |
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| 114 |
+
Contracts can combine these checks. A successful request, nonempty answer or long response alone does not establish task completion. The scorer keeps binary acceptance separate from text-quality diagnostics. Missing reference coverage remains unavailable. Exact requirements and thresholds are in each task; the [metrics guide](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/docs/metrics.md) explains their interpretation.
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Web Fetch runs call the tested tools directly. An agent does not choose browser actions during execution. Preserve the requested initial-load scope: clicking, logging in, expanding hidden content or paginating changes the work unless a task explicitly permits it. In the article subset, a qualified displayed excerpt is scored as that excerpt, and changing feeds use their own post-collection contracts.
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```sh
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git clone https://github.com/lexmount/browser-eval.git
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cd browser-eval
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git checkout f488414a6610a9871f3a6d2d8615b58090f16184
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uv sync --frozen
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uv run --frozen python -m harness.benchmarks.data
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uv run --frozen lexbench-webfetch list
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uv run --frozen lexbench-webfetch validate
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```
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+
Browser Eval downloads the dataset revision selected by its [data lock](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/harness/benchmarks/data-lock.json) and verifies the archive and file hashes. Public downloads require no access token. The [benchmark integration guide](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/docs/benchmarks.md) covers revision selection and offline caching.
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For tasks that need external reference inputs, obtain an approved matching copy and export a verified executable suite:
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|
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--output /absolute/path/new-input-directory
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```
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+
The scorer's `--suite webfetch` exports the complete mixed suite containing all six viewer groups. It does not select only `web-pages`. Use task IDs or a predeclared filtered executable dataset to run one group. The other four viewer groups retain their own scorer suite IDs. Export verifies the declared inputs before writing a new directory. See [reference inputs and access](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/docs/reference-inputs.md).
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Score a saved response using its complete task definition:
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--case-ids static-simple --output /absolute/path/new-evidence
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```
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+
The HTTP baseline does not execute JavaScript. For browser setup and a report you can inspect, follow the [runnable local example](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/examples/web_fetch/README.md). Formal comparisons use the certified workflow in the [Web Fetch evaluation guide](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/harness/web_fetch/README.md).
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## Reporting and limitations
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Report passed/evaluated counts for the declared population, unavailable results and the selected benchmark and scorer revisions. Retain failed calls and timeouts. State timing boundaries, retry policy, local or remote execution, and conversion steps; keep all-call timing separate from timing conditional on success. Optional independent verification has its own disclosed scope and does not run automatically.
|
| 209 |
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| 210 |
+
Live sites change with location, time, session state and access policy. The suite emphasizes task-relevant stable content, but a frozen reference can still become outdated. Investigate source drift before changing a verdict. Updating task requirements or scoring code does not retroactively update an old measurement. Record the immutable dataset commit, task/reference hashes and scorer source identity with each experiment. Detailed collection, correction and reporting rules are maintained in the [Web Fetch guide](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/harness/web_fetch/README.md).
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These are curated workloads, not a representative sample of every website. The article suite's initial-load scope does not measure hidden continuations or interaction-dependent content. Text and link checks do not measure visual fidelity or autonomous browser use. This dataset contains task inputs and requirements; it does not ship provider measurements or establish a standing browser ranking.
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|
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|
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- [WebArena](https://github.com/web-arena-x/webarena) and [WebArena-Verified](https://github.com/ServiceNow/webarena-verified) supply interactive tasks and evaluators used in separate browser workflows.
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| 223 |
- [Lexbench-Headless-Browser](https://github.com/lexmount/Lexbench-Headless-Browser) evaluates headless-browser runtime and automation capabilities.
|
| 224 |
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| 225 |
+
For search evaluation, use [LexBench Web Search](https://huggingface.co/datasets/Lexmount/lexbench-websearch). [Moli](https://github.com/lexmount/moli) is one browser that can be evaluated with Web Fetch tasks, and [WebFetch CLI](https://github.com/lexmount/webfetch-cli) is a client for a hosted fetch service. Report creation and sharing are covered by [Browser Eval's reporting documentation](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/docs/report-hosting.md).
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## Citation
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Cite Browser Eval and record the exact dataset revision used in your experiment. The canonical project citation is [CITATION.cff](https://github.com/lexmount/browser-eval/blob/f488414a6610a9871f3a6d2d8615b58090f16184/CITATION.cff).
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```bibtex
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@software{browser_eval_2026,
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manifest.json
CHANGED
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@@ -238,7 +238,7 @@
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"source_revision": "5a5b9367118dcc25f126ee16ef4de2d7c666f190",
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"tooling": {
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"repository": "https://github.com/lexmount/browser-eval",
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-
"revision": "
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},
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"track": "webfetch",
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"viewer": {
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"source_revision": "5a5b9367118dcc25f126ee16ef4de2d7c666f190",
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"tooling": {
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"repository": "https://github.com/lexmount/browser-eval",
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"revision": "f488414a6610a9871f3a6d2d8615b58090f16184"
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},
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"track": "webfetch",
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"viewer": {
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