open-telemetry/opentelemetry-cpp - Open Source PR Review Scorecard

The OpenTelemetry C++ Client

C-Rank Grade: A (Welcoming) - 65/100

External PR Merge Rate: 80%

Response Time: 3d

First Timer Success: 70%

Frequently Asked Questions

Is open-telemetry/opentelemetry-cpp welcoming to first-time open-source contributors?

open-telemetry/opentelemetry-cpp has a recorded first-timer success rate of 69.6%. Repositories ranked A typically provide actionable feedback during code reviews and actively nurture new community contributors.

How fast can I expect code review feedback on my pull request?

Maintainers in open-telemetry/opentelemetry-cpp respond to incoming external pull requests in approximately 63.2 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.

What does the 64.9 C-Rankâ„¢ score (A Tier) represent?

The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 64.9 places open-telemetry/opentelemetry-cpp in the A tier.

What is the external contributor pull request merge rate for open-telemetry/opentelemetry-cpp?

The external contributor pull request merge rate for open-telemetry/opentelemetry-cpp is 80.1%, based on public PR activity from non-core contributors.

Are there Good First Issues available in open-telemetry/opentelemetry-cpp?

open-telemetry/opentelemetry-cpp currently has 7 active issue(s) tagged with beginner-friendly labels like "good first issue", "beginner", or "up-for-grabs".

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AI Maintainer Review Guidelines

Review Persona

Empathetic Technical Mentor

Warmth Score
7.7/10
Patience Score
8.2/10
Nitpick Rate
30%

Collaborative maintainer environment in open-telemetry/opentelemetry-cpp. Reviews community pull requests with focus on project quality.

Top PR Submission Do's

  • •Ensure code complies with the project coding style
  • •Keep PRs scoped to a single concern
  • •Include context and link to the related issue

Top PR Friction Pitfalls (Don'ts)

  • •Do not submit PRs without linking an issue
  • •Do not break existing tests without fixing them
  • •Do not mix unrelated refactors in a single PR
Response Velocity
2 days+
Standard maintainer review cycle

Average Response Latency

Tracks hours until a maintainer leaves a review, comment, or PR response.

Merge Efficiency
80.1%
High acceptance rate for external PRs

External Acceptance Rate

Percentage of community pull requests successfully merged into main.

First-Timer Success
69.6%
Strong first-timer PR acceptance rate

First PR Conversion

Rate at which developers submitting their first repository PR succeed.

Active Maintainers
36 core
Highly collaborative maintainer core
Diagnostic Health HUD
80.1%
Merge Gauge
69.6%
1st-Timer
Community Vibe53/100

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Active Good First Issues (5)

View on GitHub

This issue covers resolving the cppcoreguidelines-pro-type-const-cast warnings. clang-tidy warnings (click to expand) File Line Message opentelemetry-cpp/examples/http/server.cc 55 do not use const_cast to remove const qualifier opentelemetry-cpp/ext/include/opentelemetry/ext/http/client/curl/http_operation_curl.h 297 do not use const_cast to remove const qualifier opentelemetry-cpp/ext/src/http/client/curl/http_operation_curl.cc 915 do not use const_cast to remove const qualifier opentelemetry-cpp/ext/src/http/client/curl/http_operation_curl.cc 957 do not use const_cast to remove const qualifier opentelemetry-cpp/ext/src/http/client/curl/http_operation_curl.cc 1005 do not use const_cast to remove const qualifier opentelemetry-cpp/ext/test/w3c_tracecontext_http_test_server/main.cc 206 do not use const_cast to remove const qualifier opentelemetry-cpp/sdk/include/opentelemetry/sdk/common/circular_buffer.h 43 do not use const_cast to remove const qualifier opentelemet

📅 Opened Aug 25, 2026💬 3 comments
Quality: 90/100Contribute

This issue covers resolving the 20 modernize-use-emplace warnings: clang-tidy warnings (click to expand) File Line Message opentelemetry-cpp/api/test/baggage/propagation/baggage_propagator_test.cc 90 use emplace_back instead of push_back opentelemetry-cpp/api/test/context/propagation/composite_propagator_test.cc 145 use emplace_back instead of push_back opentelemetry-cpp/api/test/context/runtime_context_test.cc 127 use emplace_back instead of push_back opentelemetry-cpp/api/test/nostd/shared_ptr_test.cc 224 use emplace_back instead of push_back opentelemetry-cpp/api/test/trace/propagation/http_text_format_test.cc 265 use emplace_back instead of push_back opentelemetry-cpp/api/test/trace/propagation/jaeger_propagation_test.cc 194 use emplace_back instead of push_back opentelemetry-cpp/examples/multithreaded/main.cc 63 use emplace_back instead of push_back opentelemetry-cpp/exporters/otlp/src/otlp_file_client.cc 568 use emplace_back instead of push_back opentelemet

📅 Opened Aug 25, 2026💬 2 comments
Quality: 90/100Contribute

Configuration of General Attribute Limits Background: The configuration schema includes a general attribute_limits element at the same level as the signal providers. This element defines limits for attribute count and length that should be used by the tracer and logger provider if their limits elements are not configured. attribute_limits: $ref: "#/$defs/AttributeLimits" description: | Configure general attribute limits. See also tracer_provider.limits, logger_provider.limits. The YAML parser supports attribute_limits, but the SdkBuilder currently does not pass them into the builders for the Tracer and Logger providers. As a result these values are ignored. See: opentelemetry-cpp/sdk/src/configuration/sdk_builder.cc Line 2641 in b603742 OTEL_INTERNAL_LOG_WARN("attribute_limits not supported, ignoring"); The spec requires the following limit behavior: If bot

📅 Opened Aug 21, 2026💬 1 comment
Quality: 90/100Contribute

Background: The schema defines resource.attributes_list as the primary method to support reading strings following the format of the OTEL_RESOURCE_ATTRIBUTES env variable when creating the Resource with declarative configuration. resource: # Read resource attributes from the OTEL_RESOURCE_ATTRIBUTES environment variable. # This aligns well with the OpenTelemetry Operator and other deployment methods. attributes_list: ${OTEL_RESOURCE_ATTRIBUTES} Resource Schema: resource: attributes_list: type: - string - "null" description: | Configure resource attributes. Entries have lower priority than entries from .resource.attributes. The value is a list of comma separated key-value pairs matching the format of OTEL_RESOURCE_ATTRIBUTES. See https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/configuration/sdk-environment-variables.md#general-sdk-configuration for details. defaultBehavior: no resource attributes are adde

📅 Opened Aug 19, 2026💬 2 comments
Quality: 90/100Contribute

Process Entities - Required and Recommended Attributes This ticket is to add the remaining required and recommended attributes from Process Entities to the Process Resource Detector. PRs against this ticket may be scoped to one or more attributes on one or more platforms (Linux, macOS, Windows). All PRs should update the resource_detectors/README with the attribute(s) added, platform(s) supported, and known limitations. Process Entity (process) Attribute Type Description Requirement Level process.creation.time string Date/time the process was created (ISO 8601) Required process.owner string Username of the user that owns the process Recommended Process Executable Entity (process.executable) Attribute Type Description Requirement Level process.executable.build_id.htlhash string Deterministic build ID (SHA256 of first/last 4096 bytes + length) Required process.executable.name string Base name of the process executable — note: process.executable.path is already im

📅 Opened Aug 15, 2026💬 2 comments
Quality: 90/100Contribute
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Contributor Compatibility & Review Speed Analysis for open-telemetry/opentelemetry-cpp

When evaluating whether to contribute to open-telemetry/opentelemetry-cpp, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.

Currently, maintainers of open-telemetry/opentelemetry-cpp acknowledge new external contributions in approximately 2 days+. Out of all submitted pull requests from non-core authors in the last 180-day window, 80.1% were successfully merged into the primary branch.

Frequently Asked Questions - Contributing to open-telemetry/opentelemetry-cpp

01

Is open-telemetry/opentelemetry-cpp welcoming to first-time open-source contributors?

open-telemetry/opentelemetry-cpp has a recorded first-timer success rate of 69.6%. Repositories ranked Welcoming typically provide actionable feedback during code reviews and actively nurture new community contributors.

02

How fast can I expect code review feedback on my pull request?

The initial maintainer response time averages ~2 days+. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.

03

What does the 64.9 C-Rankâ„¢ score represent?

The C-Rankâ„¢ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 64.9 places open-telemetry/opentelemetry-cpp in the Welcoming tier.

04

What is the external contributor pull request merge rate for open-telemetry/opentelemetry-cpp?

The external pull request merge rate is 80.1%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.

05

Are there beginner Good First Issues open in open-telemetry/opentelemetry-cpp?

Yes, open-telemetry/opentelemetry-cpp currently has 7 active issue(s) tagged with beginner-friendly labels. You can inspect these directly from the repository issues tab.

GetMerged C-Rankâ„¢ Indexing Standard

All metrics displayed for open-telemetry/opentelemetry-cpp are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.

open-telemetry/opentelemetry-cpp (A-Tier 64.9) | GetMerged