Add agents.txt v1.0 at repo root

agents.txt

@@ -0,0 +1,71 @@
+# agents.txt - v1.0 open standard for AI agent contribution policy
+# https://github.com/barneywohl/agentpress/blob/main/docs/AGENTSTXT_SPEC.md
+
+[meta]
+spec_version = 1.0
+project = anthropic-sdk-python
+maintainer = anthropics/sdk team
+contact_for_agents = support@anthropic.com
+last_updated = 2026-05-13
+ai_disclosure_required = true
+license = MIT
+
+[allowed_actions]
+read_documentation
+read_source_code
+read_tests
+file_pull_request
+add_or_update_examples
+fix_typos_in_docs
+add_test_cases
+run_tests_in_ci
+run_linter
+
+[prohibited_actions]
+merge_to_main
+deploy_to_production
+publish_to_pypi
+modify_generated_code_without_human_review
+edit_openapi_spec_directly
+exfiltrate_secrets
+impersonation
+force_push_to_main
+bypass_codeowners
+
+[requires_human_approval]
+release_pull_requests
+version_bumps
+changes_touching = src/anthropic/_client.py, src/anthropic/_models.py, src/anthropic/types/**, src/anthropic/resources/**, .stats.yml, release-please-config.json, .release-please-manifest.json, pyproject.toml
+schema_or_api_surface_changes
+new_runtime_dependencies
+changes_to_ci_workflows = .github/workflows/**
+
+[entry_points]
+contributing = CONTRIBUTING.md
+quickstart = README.md
+architecture = api.md
+test_command = ./scripts/test
+lint_command = ./scripts/lint
+api_spec = api.md
+
+[disclosure]
+pr_label = agent-authored
+commit_trailer = Co-Authored-By: <agent-name> <agent-email>
+require_attribution_in_pr_body = true
+
+[verification]
+ci_runner = github_actions
+ci_workflow = .github/workflows/ci.yml
+expected_exit = 0
+
+[scope]
+single_purpose_pr = true
+
+[contact]
+escalation = https://github.com/anthropics/anthropic-sdk-python/issues
+escalation_email = support@anthropic.com
+
+[fyi]
+preferred_pr_size = small
+preferred_commit_style = conventional
+note = Most of this SDK is auto-generated by Stainless from an OpenAPI spec. The generator will never modify src/anthropic/lib/ or examples/ — those are the safest surfaces for agent contributions, alongside tests and docs. Release PRs are opened by stainless-app[bot]; do not duplicate or race them.