Changelog

Coding Agent Capture, and Gateway Billing

LangWatch captures Copilot from its CLI wrapper, its app login agent and VS Code Chat, and there is a LangWatch plugin for Claude Code. Gateway spend gets a billing pipeline with webhooks and reconciliation.

LangWatch Team · August 9, 2026 · 3.11.0

What You Can Do Now

See what your coding agents are doing

  • Capture Copilot across three surfaces: the CLI wrapper, the app login agent, and VS Code Chat.

  • Capture the conversation from a plain codex run, not just the wrapper.

  • Install a first-class LangWatch plugin for Claude Code, built on Agent Plugins 1.0, and it keeps itself up to date from every wrapped run.

  • Review session economics, with the repositories and pull requests behind each session.

Bill and reconcile gateway spend

  • A billing-grade spend pipeline with a webhook endpoints platform and a reconciliation surface, plus anchored cycles and idempotency keys.

  • A budget now applies to the traffic it was scoped to, and each route states which key it requires.

  • One filter vocabulary across both spend reads, and grouping that no longer double-counts.

  • Routing-policy and cache-rule edits propagate through the change feed.

Self-host with your own identity and email

  • AWS Cognito and OneLogin join the supported self-hosted SSO providers.

  • One switch for email, with SMTP and Resend gateways, outbound proxy support, and a self-hosting page walking through setup.

  • Sign-up recovers when the account already exists.

Turn traces into datasets

  • A trace edit overlay, and an annotation-queue-to-dataset workflow, so review work becomes training or evaluation data.

  • Oversized spans spool to S3 by default, so configured storage means no truncation.

  • The Events column in Traces V2 reads real events, and a category with no result no longer shows as a passing zero.

Build against the API

  • The REST API the SDKs actually call is now published as reference docs, with route coverage gated in CI.

Model providers

  • Google Agent Platform is now part of the Gemini provider, reachable through either endpoint.

  • Test a credential you have already saved, and an extra header no longer wipes stored Azure credentials.

Housekeeping you will feel

  • Seven production defects found in a five-day error review, fixed.

  • We stopped tracing every Redis command, which had been 93 percent of all spans.

  • The legacy Ragas evaluators are gone.

  • Seat changes no longer get blocked by a personal workspace, and refusals say what was refused.

Screenshots

Coding-agent sessions, with the repositories and pull requests behind them.

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Repository capture in the sessions lens.

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The billing events ledger.

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Self-hosted SSO through Cognito.

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The trace edit overlay with its annotations column.

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REST API reference, published from what the SDKs call.

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Notes

  • Three app releases this week: 3.9.0, 3.10.0 and 3.11.0, plus python-sdk 1.2, typescript-sdk 1.5, mcp-server 2.0 and langevals 3.0.

  • mcp-server 2.0 is a major: every request to the standalone HTTP server is now authorized.

  • Performance: resident memory cut on the server, content-hashed assets can be served from a CDN, and prod entrypoints are bundled to run on node rather than tsx.