# paypal/PayPal-PHP-Server-SDK — health index 59/100 (Moderate)

> Inspection of the public repository paypal/PayPal-PHP-Server-SDK by inspect.software. It holds a health index of 59 out of 100, placing it in the Moderate band. The index is a signal derived from publicly visible practice, not a warranty, a security audit, or an endorsement, and it is independent of payment.

- Repository: https://github.com/paypal/PayPal-PHP-Server-SDK
- Report page: https://inspect.software/software/paypal/PayPal-PHP-Server-SDK
- Full JSON report: https://inspect.software/api/repositories/paypal/PayPal-PHP-Server-SDK/report
- Badge: https://raw.githubusercontent.com/inspect-software/badges/main/v1/p/paypal/PayPal-PHP-Server-SDK.svg
- Inspected: 2026-08-21
- Methodology: metrics 2.10.0, report schema 0.34.0 (https://inspect.software/methodology.md)

## Category summary

| Category | Weight | Index | Band |
|---|---|---|---|
| Vitality | 21% | 63/100 | Moderate |
| Community & Adoption | 17% | 65/100 | Good |
| Sustainability & Governance | 23% | 70/100 | Good |
| Engineering Quality | 19% | 41/100 | Weak |
| Security | 16% | 46/100 | Weak |
| AI Readiness | 4% | 19/100 | Critical |

The weighted overall 56 is calibrated to 59 on the published index scale (record calibration 2026-08-02).

## Repository facts

| Field | Value |
|---|---|
| Description | The PayPal Server SDK provides integration access to the PayPal REST APIs. |
| Classification | library |
| Homepage | https://developer.paypal.com/serversdk/php/getting-started/how-to-get-started |
| Primary language | PHP |
| Stars | 63 |
| Forks | 18 |
| Created | 2024-08-26 |
| Last push | 2026-08-21 |
| Latest release | 2.4.0 |
| Commits (last year) | 9 |
| Bus factor | 2 |
| Topics | api-integration, checkout, orders, payments, paypal, php, server-sdk, subscriptions, transaction-search, vault |

## Published packages

| Registry | Package | Latest | Monthly downloads |
|---|---|---|---|
| packagist | paypal/paypal-server-sdk | 2.3.0 | 146,604 |

## Vitality — 63/100 (Moderate)

Is the project alive — is code being written and are releases shipping? Weight: 21% of the overall index.

### Development activity — 52/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Push recency | met | 36 / 36 | last push 0 days ago |
| Commit cadence | partial | 4.8 / 36 | 7/52 weeks with commits |
| Commit volume | partial | 9 / 18 | 9 commits in the last year |
| OpenSSF Scorecard: Maintained | partial | 2 / 10 | 3 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 2 |

### Release discipline — 80/100 (Excellent)

Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ships releases | partial | 16.2 / 27 | 14 version tags (no GitHub releases) |
| Release recency | met | 36 / 36 | latest release 0 days ago |
| Release cadence | partial | 19.8 / 27 | a release every ~74.6 days |
| OpenSSF Scorecard: Signed-Releases | excluded | 0 / 10 | no releases found |

### Abandonment — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Project is still maintained | met | 100 / 100 | last human commit 2 days ago |

## Community & Adoption — 65/100 (Good)

Does the project have users, downloads, attention, and a welcoming setup for contributors? Weight: 17% of the overall index.

### Popularity & adoption — 46/100 (Weak)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Stars | partial | 29.1 / 60 | 63 stars |
| Forks | partial | 10.3 / 25 | 18 forks |
| Watchers | partial | 6.4 / 15 | 15 watchers |

### Community health — 79/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 22.5 / 22.5 | — |
| License | partial | 16.9 / 22.5 | license file present, not a recognized license |
| CONTRIBUTING guide | met | 18 / 18 | — |
| Code of conduct | met | 13.5 / 13.5 | — |
| Issue template | not met | 0 / 7.2 | — |
| PR template | not met | 0 / 6.3 | — |

### Ecosystem adoption (downloads) — 77/100 (Good)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Monthly downloads | partial | 68.9 / 80 | 146,604 downloads/month across packagist |
| Registry dependents | partial | 8 / 20 | 15 packages depend on it |

## Sustainability & Governance — 70/100 (Good)

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep? Weight: 23% of the overall index.

### Maintainer resilience (bus factor) — 47/100 (Weak)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Bus factor | partial | 25.2 / 54 | 2 contributor(s) cover half of all commits |
| Commit distribution | partial | 13 / 22.5 | top contributor authored 42% of commits |
| Contributor breadth | partial | 5.4 / 13.5 | 4 contributors |
| OpenSSF Scorecard: Contributors | partial | 3 / 10 | project has 1 contributing companies or organizations -- score normalized to 3 |

### Issue & PR responsiveness — 47/100 (Weak)

Excluded from scoring (no data or not applicable): Issue resolution, Newcomer PR acceptance. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Issue resolution | excluded | 0 / 42 | no issues or no data |
| PR acceptance | partial | 13.6 / 30 | 15/33 decided PRs merged |
| Newcomer PR acceptance | excluded | 0 / 13 | no first-time contributor's PR decided in 30d |
| OpenSSF Scorecard: Code-Review | partial | 7.5 / 15 | Found 10/17 approved changesets -- score normalized to 5 |

### Ownership & stewardship — 98/100 (Exceptional)

Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Ownership backing | met | 30 / 30 | organization-owned |
| Verified domain | excluded | 0 / 20 | verified-domain status not read for this organization |
| Owner reach | partial | 23.7 / 25 | 1,997 followers of paypal |
| Track record | met | 25 / 25 | 163 public repos, account ~15 yr old |

### Package maintenance — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Published & resolvable | met | 25 / 25 | 1 package(s) on packagist |
| Publish recency | met | 35 / 35 | latest publish 76 days ago |
| Version history | met | 20 / 20 | 13 published versions |
| Not deprecated | met | 20 / 20 | active, not deprecated or yanked |

## Engineering Quality — 41/100 (Weak)

Are baseline engineering and documentation practices in place? Weight: 19% of the overall index.

### Engineering practices — 1/100 (Critical)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| CI workflows | not met | 0 / 24 | — |
| Tests present | not met | 0 / 24 | — |
| Linter config | not met | 0 / 16 | — |
| Pre-commit hooks | not met | 0 / 9.6 | — |
| .editorconfig | not met | 0 / 6.4 | — |
| OpenSSF Scorecard: CI-Tests | not met | 0 / 20 | 0 out of 13 merged PRs checked by a CI test -- score normalized to 0 |

### Documentation — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| README | met | 30 / 30 | — |
| Documentation directory | met | 25 / 25 | — |
| Documentation / homepage site | met | 15 / 15 | https://developer.paypal.com/serversdk/php/getting-started/how-to-get-started |
| Repository description | met | 10 / 10 | — |
| Topics | met | 10 / 10 | 10 topics |
| Wiki | met | 10 / 10 | — |

## Security — 46/100 (Weak)

Are visible security and supply-chain practices strong, with no malicious dependency and no unresolved high-risk jurisdiction exposure? Weight: 16% of the overall index.

### Security posture — 33/100 (At Risk)

Excluded from scoring (no data or not applicable): Dangerous-Workflow, Packaging, Pinned-Dependencies, Signed-Releases, Token-Permissions. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Binary-Artifacts | met | 7.5 / 7.5 | no binaries found in the repo |
| Branch-Protection | not met | 0 / 7.5 | branch protection not enabled on development/release branches |
| CI-Tests | not met | 0 / 2.5 | 0 out of 13 merged PRs checked by a CI test -- score normalized to 0 |
| CII-Best-Practices | not met | 0 / 2.5 | no effort to earn an OpenSSF best practices badge detected |
| Code-Review | partial | 3.8 / 7.5 | Found 10/17 approved changesets -- score normalized to 5 |
| Contributors | partial | 0.8 / 2.5 | project has 1 contributing companies or organizations -- score normalized to 3 |
| Dangerous-Workflow | excluded | 0 / 10 | no workflows found |
| Dependency-Update-Tool | not met | 0 / 7.5 | no update tool detected |
| Fuzzing | not met | 0 / 5 | project is not fuzzed |
| License | partial | 2.2 / 2.5 | license file detected |
| Maintained | partial | 1.5 / 7.5 | 3 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 2 |
| Packaging | excluded | 0 / 5 | packaging workflow not detected |
| Pinned-Dependencies | excluded | 0 / 5 | no dependencies found |
| SAST | not met | 0 / 5 | SAST tool is not run on all commits -- score normalized to 0 |
| Security-Policy | not met | 0 / 5 | security policy file not detected |
| Signed-Releases | excluded | 0 / 7.5 | no releases found |
| Token-Permissions | excluded | 0 / 7.5 | No tokens found |
| Vulnerabilities | met | 7.5 / 7.5 | 0 existing vulnerabilities detected |

### Dependency advisories — 100/100 (Exceptional)

Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 1 resolved dependencies against OSV; 7 could not be assessed (no resolved version, an unsupported ecosystem, or beyond the reported package list). This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. Reachability is not analyzed.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Direct dependencies free of known advisories | met | 35 / 35 | no direct dependency carries a known advisory |
| Indirect dependencies free of known advisories | excluded | 0 / 25 | transitive set not separable from development and test dependencies in this scope |
| No advisories left outstanding | excluded | 0 / 40 | no advisory carries a publication date |

### Malicious dependencies — 100/100 (Exceptional)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| No dependency reported as a malicious package | met | 100 / 100 | no dependency is reported as a malicious package |

### High-Risk Jurisdiction Exposure — 100/100 (Exceptional)

Only high-confidence self-published location evidence affects this multiplier. Ambiguous matches are review-only; country evidence is not proof of nationality, citizenship, legal registration, malicious intent, or sanctions status.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Policy exposure multiplier | met | 100 / 100 | no confirmed policy-scope location match |

## AI Readiness — 19/100 (Critical)

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight: agent tooling is a real maintenance signal, but its absence must never gate the top of the scale (calibration saturates at raw 91, so 100/100 remains reachable with AI Readiness at zero).

### Agent context & guidance — 25/100 (At Risk)

Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Agent instructions | not met | 0 / 45 | no CLAUDE.md / AGENTS.md / editor rules |
| Machine-readable docs (llms.txt) | met | 15 / 15 | llms.txt served by the project website (https://developer.paypal.com/llms.txt) |
| Legible commit history | excluded | 0 / 40 | no data |

### Verify loop (build / test / typecheck) — 1/100 (Critical)

Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance, OpenSSF Scorecard: Pinned-Dependencies. Remaining weights renormalized.

| Criterion | Status | Points | Detail |
|---|---|---|---|
| One-command bootstrap | not met | 0 / 18 | — |
| Automated tests | not met | 0 / 22 | — |
| Lint / format config | not met | 0 / 11 | — |
| Static type checking | not met | 0 / 11 | — |
| Reproducible environment | not met | 0 / 10 | — |
| Demonstrated agent practice | excluded | 0 / 10 | no data |
| Automated maintenance | excluded | 0 / 8 | no data |
| OpenSSF Scorecard: Pinned-Dependencies | excluded | 0 / 10 | no dependencies found |

### Code legibility for models — 55/100 (Moderate)

| Criterion | Status | Points | Detail |
|---|---|---|---|
| Type-checkable code | not met | 0 / 45 | PHP without a type-check config |
| Manageable file sizes | partial | 54.9 / 55 | 1/677 source files over 60KB |

## Collection warnings

- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token

## What this report is

inspect.software measures public repositories against a single published, versioned methodology and reports the result as a 1–100 health index. Findings are signals derived from what is visible in public repository data — they are not a security audit, a warranty, or an endorsement, and no result depends on payment.

- Methodology, formulas and weights: https://inspect.software/methodology.md
- What a result does and does not claim: https://inspect.software/wiki/signals-not-warranties.md
- Rating bands: https://inspect.software/wiki/scoring-bands.md
- Corrections: https://inspect.software/contact.md
- Index of all documents: https://inspect.software/llms.txt