GILD verdict
Use Seer to diagnose errors from production telemetry.
Use Claude Code to implement and test the changes. To connect them, send Seer's root cause to a Claude agent or call Seer through Sentry's MCP server. Keep automatic handoff off on projects with a public DSN. On October 25, 2026, the CERT/CC note for CVE-2026-90999 still listed no vendor patch and no statement from Sentry.
Seer starts from a Sentry issue with the production telemetry already attached and can run before anyone asks. Claude Code starts from an engineer's prompt in a repository and sees production only through the tools you connect, such as Sentry's MCP server.
Choosing between Claude Code and Seer
Choose Claude Code if
- The bug report starts outside Sentry, or the fix needs exploration across the codebase with tests run locally before anyone opens a pull request.
- Your code is on Bitbucket, Azure DevOps, or self-hosted Git, which Seer does not support.
- You want one agent for features and fixes, included in Claude plans with no US$40 per-contributor add-on. Anthropic's MCP docs use Sentry's server as their example for reading errors.
Choose Seer if
- Your team already sends errors and traces to Sentry, along with logs. You want recurring issues diagnosed before an engineer opens them.
- You want fixes to start from a Sentry issue or Slack alert. Each project needs its own stopping point, at root cause, plan, or draft pull request.
- You want pull request review that predicts errors, inside the same per-contributor price as diagnosis and fixes.
Side by side
| Dimension | Claude Code | Seer |
|---|---|---|
| Where work starts | An engineer's prompt in the terminal, IDE extensions, desktop app, web, Slack, or CI | A Sentry issue. Seer runs automatically on issues with 10 or more events in the last 14 days and a high enough fixability score, or on demand from the issue page or a Slack alert |
| Production context | What you connect: MCP servers such as Sentry's, other CLIs, and the repository itself | Issue details, stack traces, traces and spans, logs, profiles, and linked repositories; Seer Agent can add Datadog and Google Cloud data |
| Who writes the fix | Claude Code edits the working tree, runs commands and tests, and commits under the permission mode you set | Seer drafts the change and opens a pull request on GitHub or GitLab, or hands its root cause and plan to a Claude, Cursor, or GitHub Copilot cloud agent |
| Team priceList prices in US dollars. Seer's Claude Agent handoff runs on your own Anthropic API key, so Anthropic bills that work separately. | Included in Claude plans. Pro: US$20 per month, or US$17 billed annually. Max: from US$100 per month. Team: US$25 per seat per month, or US$20 billed annually. Enterprise: US$20 per seat per month billed annually, plus usage at API rates | US$40 per active contributor per month, added to a Sentry Team plan at US$26 per month billed annually or US$29 monthly, or a Business plan at US$80 or US$89 |
| Git platforms | Any local repository; GitHub and GitLab automation through CI | GitHub.com and GitLab.com only; not Bitbucket, Azure DevOps, or self-hosted Git |
| Training on your data | Team, Enterprise, and API: not used for training. Free, Pro, and Max: used when the account's setting is on | Not used to train generative AI models unless your organization opts in |
| Unattended runs | Manual mode asks before edits and commands; auto mode lets a classifier approve or block actions, and organizations can turn it off | Automation can run Autofix and hand work to a coding agent without a person starting it; CVE-2026-90999 covers that handoff from events sent to a public DSN |
What practitioners report, side by side
Each product's figures come from its own practitioners, for the group you pick.
Overall signal
Leaders and teams rate Claude Code +75, 64 points above Seer at +11. Most of the gap is in praise, with 41 of Claude Code's 53 sources positive against 10 of Seer's 29. Claude Code has 1 negative and Seer 6.
The score counts the authors from leaders and teams that take a side, one vote each with their latest view, and is how far positive votes lead negative ones, per 100 votes, so Seer's +11 rests on votes split 9 positive, 13 mixed and 6 negative.
Each of Claude Code's authors wrote one source here, so each source is one vote. A lead of a fifth of the votes reads positive and a lead of half strong positive, with the same lines below zero. The dots show each source, positive, mixed, negative. Use a task pilot to measure accepted work and review time.
Footprint on the Agentic Software Development stack
They differ on seven of 12 layers. Claude Code owns four that Seer does not, and Seer owns two that Claude Code does not. Coverage is each product's placement on this stack, as its product page shows it. Core is a job the product owns; Supports and Touches are jobs it helps with. Coverage says nothing about how well a product does them.
| Layer | Claude Code | Seer |
|---|---|---|
| Plan | ||
| Work planning | Supports | Touches |
| Build | ||
| Codebase context | Core | Supports |
| Coding | Core | Supports |
| Agent runtime | Core | Touches |
| Tool execution | Core | Supports |
| Validate | ||
| Debugging | Supports | Core |
| Operate | ||
| Observability | Touches | Core |
The 5 layers where they match
| Layer | Claude Code | Seer |
|---|---|---|
| Validate | ||
| Testing | Supports | Supports |
| Code review | Supports | Supports |
| Application security | Touches | Touches |
| Ship | ||
| Source control | Touches | Touches |
| CI/CD | Touches | Touches |
What practitioners praise
Among leaders and teams, Claude Code alone has six praise themes that reach 5 sources from 3 authors. Codebase Understanding and Developer Experience lead, at 10 of 10 and 9 of 10. Code Review Catches reaches 5 sources from 3 authors only for Seer, at 10 of 16. Claude Code needs a pilot on the same repository tasks before you choose on it.
| Praised for | Claude Code | Seer |
|---|---|---|
| Codebase Understanding | 10 of 10 | Not a theme in its sources |
| Developer Experience | 9 of 10 | Not a theme in its sources |
| Large Refactors | 8 of 9 | Not a theme in its sources |
| Value for Money | 5 of 5 | Not a theme in its sources |
| Multi-Step Execution | 5 of 6 | Not a theme in its sources |
| Enterprise Administration | 4 of 5 | Not a theme in its sources |
| Code Review Catches | Not a theme in its sources | 10 of 16 |
Each count is the sources that praise a theme, or raise it as a concern, out of those that discuss it. A row pairs the two products when both carry a theme under the same or an equivalent name.
A count ending in "so far" has under 5 sources from 3 authors among leaders and teams. "Not a theme in its sources" means GILD found no theme of that name in that product's sources.
What practitioners raise as concerns
Among leaders and teams, Claude Code alone has five concern themes that reach 5 sources from 3 authors. Requires Strong Review and Inconsistent Results on Large Tasks lead, at 16 of 23 and 6 of 7. Platform & Setup Limits and Wrong Findings reach 5 sources from 3 authors only for Seer, at 6 of 6 and 5 of 6. Claude Code needs a pilot on the same repository tasks before you choose on either.
| Raised as a concern | Claude Code | Seer |
|---|---|---|
| Requires Strong Review | 16 of 23 | Not a theme in its sources |
| Inconsistent Results on Large Tasks | 6 of 7 | Not a theme in its sources |
| Context Management | 6 of 12 | Not a theme in its sources |
| Usage / Cost | 5 of 11 | Not a theme in its sources |
| Permissions & Safety | 2 of 10 | Not a theme in its sources |
| Platform & Setup Limits | Not a theme in its sources | 6 of 6 |
| Wrong Findings | Not a theme in its sources | 5 of 6 |
14 sources
- Sentry docs: Seer
- Sentry docs: Autofix
- Sentry docs: Pricing & Billing (Seer pricing)
- Sentry pricing
- Sentry docs: Claude Agent
- Sentry docs: AI Privacy Principles
- Sentry blog: Seer, the Sentry MCP and CLI, or your own coding agent (Oct 2, 2026)
- CERT/CC Vulnerability Note VU#212479: Sentry Seer (Sep 16, 2026)
- Claude pricing
- Claude Code docs: Platforms
- Claude Code docs: Costs
- Claude Code docs: Connect Claude Code to tools via MCP
- Claude Code docs: Security
- Claude Code docs: Data usage