{"adoption": {"forks": 94, "observed_at": "2026-08-28T04:06:55.585128+00:00", "stars": 2486}, "canonical_url": "https://ross.abutalabs.com/products/mcaptcha", "card": {"archived": false, "artifact_type": "service", "description": "A no-nonsense CAPTCHA system with seamless UX | Backend component", "domain": ["security", "web-development", "privacy", "self-hosted"], "enriched": true, "function": ["security", "rate-limiting", "http-server", "web-framework", "self-hosted"], "health_score": 52, "homepage": "https://demo.mcaptcha.org", "language": "Rust", "license": "AGPL-3.0", "license_family": "copyleft", "maturity": "active", "member_repos": ["mCaptcha/mCaptcha"], "name": "mCaptcha/mCaptcha", "platform": ["self-hosted", "rust"], "pushed_at": "2025-10-07T08:47:27+00:00", "repo": "mCaptcha/mCaptcha", "stars": 2486, "tags": ["captcha", "proof-of-work", "anti-spam", "ddos-protection", "bot-protection", "privacy-respecting", "actix-web", "linux", "docker", "web-server"], "topics": ["mcaptcha", "captcha", "proof-of-work", "privacy", "self-hosted", "rust", "actix-web", "spam-protection", "ddos-protection", "ddos-mitigation", "self-host"], "urls": [], "use_cases": ["protect a website form from spam bots without annoying image CAPTCHAs", "mitigate DDoS attacks by making requests computationally expensive for clients", "replace Google reCAPTCHA with a self-hosted, tracking-free alternative", "add bot protection to a login or signup flow with seamless UX", "rate limit abusive traffic using variable proof-of-work difficulty"], "what_it_is": "mCaptcha is a self-hosted, privacy-respecting CAPTCHA system that uses SHA-256 proof-of-work to rate-limit users instead of image puzzles. This repository is the backend service that validates proofs of work and issues tokens for websites to verify.", "when_to_avoid": ["you need accessibility features for users on low-powered devices where PoW computation is slow", "you prefer a managed SaaS CAPTCHA with zero infrastructure", "you need a CAPTCHA that blocks fully automated headless browsers with high compute resources"], "when_to_choose": ["you need a privacy-focused CAPTCHA with no user tracking", "you want to self-host your bot protection instead of relying on third parties", "you prioritize seamless UX over interactive puzzles", "you need DDoS mitigation that scales difficulty with attack load"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/mcaptcha", "repo": "mCaptcha/mCaptcha", "role": "main", "score": 43}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:55.585128+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T02:28:02.638348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f3222cc9f1fcc43eb3ffb7b3025c28b0cce11205690034ca55662a026d5ddaa0", "fetched_at": "2026-08-28T04:06:55.585128+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mCaptcha/mCaptcha"}, {"content_hash": "e9ea0018ae041a1ce805fb618b8c8f9f104b4c43a2071448cd68594262055be1", "fetched_at": "2026-08-29T10:09:54.737488+00:00", "kind": "homepage", "missing": false, "url": "https://demo.mcaptcha.org"}, {"content_hash": "096e5a03c152f60ec07964b8c53f4f45e176cab49132d9225de008c9451f5996", "fetched_at": "2026-08-29T10:09:54.746288+00:00", "kind": "site_page", "missing": false, "url": "https://mcaptcha.org/about"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 45, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 2003, "days_push": 330, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 43, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}