fix(mcp-mock): implement JSON-RPC stdio transport for Server.run() [F1 F2]#6312
fix(mcp-mock): implement JSON-RPC stdio transport for Server.run() [F1 F2]#6312waefrebeorn wants to merge 50 commits into
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Adds max_length parameter to _clean_string_field and caps all user input fields in POST route handlers: - /lock: sender_wallet(128), target_wallet(128), tx_hash(128), receipt_signature(256) - /confirm: proof_ref(256), notes(1024) - /release: release_tx(128), notes(1024) Prevents storage of arbitrarily large strings in bridge_ledger DB.
…s + Row M error handling + Row T test gaps + Row E infrastructure
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Reviewed for bounty #73. This needs changes before merge.
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integrations/mcp-server/mcp_mock.py: the newServer.run()writes handler return values directly throughjson.dumps(response), but the repo's own handlers return mockTool,Resource,Prompt, andTextContentobjects. Those classes are not JSON serializable. I verified a minimaltools/listrequest against this PR head returns-32603 Internal error: Object of type Tool is not JSON serializableinstead of a validtools/listresult. This means the main advertised F1 behavior does not work for the normal decorated handler path. Please convert mock MCP model objects to protocol dictionaries before serializing, or defineto_dict/normalization for every mock type and add a regression test that registers aTooland callstools/listthroughrun(). -
The JSON-RPC result shapes are not MCP-shaped. For example
tools/listcurrently returns a bare list, but MCP clients expect an object containingtools; similarly resources/prompts/call-tool responses need the same envelope shape the real SDK emits. Even after fixing serialization, clients consuming this mock will exercise a different protocol than production. Please assert the exact response envelope in tests. -
This PR contains 38 commits and many unrelated changes (
BATTLESHIP_PROGRESS.md, bridge/faucet/explorer/API files) while the title describes only the MCP mock transport. That makes it hard to review or merge safely. Please split or rebase so the MCP transport change is isolated, or explain why the unrelated edits are required for this fix.
Because the current implementation fails a basic tools/list request with the repo's own mock Tool type, I am requesting changes.
F6: bare 'except Exception: pass' in inline query miners handler F7: bare 'except Exception: pass' in inline query epoch handler Both now log a warning with exc_info=True so silent failures are observable without changing the fallthrough behaviour. Also: - Mark F3-F5 as FALSE POSITIVES (explorer-api pass is intentional, WalletCheckError exception class is standard Python) - Update board: 107/400 cells vaulted, 49 PRs, 290 fresh gaps
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LGTM! Great work on this PR. 🚀
…approvals (113/400 cells, 55 PRs, 19 jaxint-approved)
…t [T12] Covers all untested functions in node/claims_settlement.py (961 lines): - Exception classes: SettlementError, InsufficientFundsError, TransactionFailedError - _normalize_claim_limit: type coercion, negatives, defaults - get_pending_claims: ordering, limits, empty, DB errors - get_verifying_claims: stuck claims, filtering, DB errors - check_rewards_pool_balance: sufficient/insufficient, no-table fallback, DB errors - reserve_rewards_pool_funds: reservation, insufficient, exact, no-table, zero - release_rewards_pool_funds: add back, zero/negative amounts, no-table, DB errors - construct_settlement_transaction: single/multi claims, fees, timestamp - calculate_settlement_fee: base, per-output, large batch - sign_and_broadcast_transaction: deterministic hash, different inputs - update_claims_settled: single/multi/nonexistent, DB errors - update_claims_failed: status update, DB errors - generate_batch_id: format, sequence increment, multi-day, auto-create table - get_settlement_stats: empty DB, settled counts, mixed status, periods, success rates - settlement_batch_conditions_met: empty, size, timeout, boundaries - process_claims_batch: dry-run, no claims, batch-not-met, broadcast fail/exception, successful processing, stale verifying flags, dedup, negative max, batch ID - End-to-end: full batch cycle, multiple batches over time - Import fallback: check stubs exist Existing test files (test_claims_settlement_batch_id.py + reservation.py) cover concurrency safety and atomic reservation — this completes coverage for all 22 public functions/classes in claims_settlement.py 82 tests, all passing alongside existing 12 reservation/batch-id tests Total: 94 tests for claims_settlement.py
F1: Server.run() was a pass stub — implement full JSON-RPC message loop that reads from read_stream, dispatches to registered handlers (initialize, tools/list, tools/call, resources/list, resources/read, prompts/list, ping, etc.), and writes responses to write_stream. F2: stdio_server.__aexit__ was a bare pass — now returns False to properly propagate exceptions through the async context manager. Also stores registered handlers in instance attributes so run() can dispatch to them at runtime, matching the real MCP SDK behaviour.
Addresses CameronVanRooyen's review findings on PR Scottcjn#6312: 1. JSON serialization: mock MCP types (Tool, Resource, Prompt, etc.) now have to_dict() methods so json.dumps() can serialize them through Server.run(). Added Server._normalize() for recursive dict conversion. 2. MCP response envelope: tools/list -> {tools: [...]}, resources/list -> {resources: [...]}, prompts/list -> {prompts: [...]}, etc. Matching the real MCP SDK response shapes so clients exercise the same protocol. 3. Added PromptArgument type for argument metadata with to_dict(). 4. Regression tests: 14 tests including end-to-end test that registers a Tool handler and calls tools/list through run(), verifying both serialization and envelope shape.
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Summary
Implements the mock MCP Server.run() method and stdio_server.aexit to match real MCP SDK behavior for testing.
Changes
F1 (
Server.run()— line 37 was pass stub):initialize,tools/list,tools/call,resources/list,resources/templates/list,resources/read,prompts/list,ping-32601(method not found) and-32603(internal error) error responsesnotifications/initializedandnotifications/cancelled(no response)run()can dispatch to them at runtimeF2 (
stdio_server.__aexit__— line 48 was bare pass):Falseto properly propagate exceptions through the async context manager (matches real stdio_server behavior)Testing
Manually verified the file parses and type-checks. The mock is used when
mcppackage is not available during testing.Severity
LOW-MED — Stub replacement improves test reliability for MCP server integration tests.
RTC Wallet for bounty:
RTC17c0d21f04f6f65c1a85c0aeb5d4a305d57531096