SYSTEM all green source merlot.org queue 12,491 pages p99 latency 184ms dataflirt.com · scraper/merlot-org
RUN * 14 active pipelines * merlot.org live

MERLOT OER data,
at warehouse scale.

We extract learning materials, peer reviews, discipline classifications, and author profiles from MERLOT. Delivered as clean JSON, CSV, or Parquet to S3, BigQuery, or Snowflake on your cadence.

Resources extracted
98.4K /run
Peer reviews
34.2K /run
Authors mapped
18.9K /run
Active pipelines
14
Uptime
99.98%
Data Dictionary

Every field we extract from merlot.org

Structured, schema-consistent data across all major object types — delivered clean, typed, and ready to query.

Complete list of extractable fields for Learning Materials objects from merlot.org. All fields typed and schema-versioned.

material_idtitleexternal_urlauthor_namematerial_typedate_addedprimary_disciplinesub_disciplinecreative_commons_licensetarget_audiencelanguageaverage_ratingpeer_review_count
learning_materials
● 200 OK
"material_id": "M124981",
"title": "Introduction to Quantum Mechanics",
"author_name": "Dr. Sarah Jenkins",
"material_type": "Simulation",
"primary_discipline": "Science and Technology",
"creative_commons_license": "CC BY-NC-SA",
"average_rating": 4.5,
"peer_review_count": 3
# material_idtitleexternal_urlauthor_namematerial_typedate_added
1
2
3

Complete list of extractable fields for Peer Reviews objects from merlot.org. All fields typed and schema-versioned.

review_idmaterial_idreviewer_namereviewer_profile_urlreview_dateoverall_ratingcontent_quality_ratingpotential_effectiveness_ratingease_of_use_ratingreview_text
peer_reviews
● 200 OK
"review_id": "PR89231",
"material_id": "M124981",
"reviewer_name": "Prof. Alan Turing",
"overall_rating": 5.0,
"content_quality_rating": 5.0,
"ease_of_use_rating": 4.5,
"review_date": "2023-11-14",
"review_text": "Excellent simulation that accurately demonstrates wave-particle duality."
# review_idmaterial_idreviewer_namereviewer_profile_urlreview_dateoverall_rating
1
2
3

Complete list of extractable fields for Author Profiles objects from merlot.org. All fields typed and schema-versioned.

member_idnameaffiliationrolejoined_datesubmitted_materials_countauthored_materials_countcomments_countprofile_url
author_profiles
● 200 OK
"member_id": "U45192",
"name": "Dr. Sarah Jenkins",
"affiliation": "University of Bristol",
"role": "Faculty",
"joined_date": "2018-04-22",
"authored_materials_count": 14,
"submitted_materials_count": 29
# member_idnameaffiliationrolejoined_datesubmitted_materials_count
1
2
3

Complete list of extractable fields for Discipline Taxonomy objects from merlot.org. All fields typed and schema-versioned.

category_idnameparent_categorymaterial_countmember_countdescriptioncategory_urllast_updated
discipline_taxonomy
● 200 OK
"category_id": "C912",
"name": "Physics",
"parent_category": "Science and Technology",
"material_count": 4821,
"member_count": 1205,
"category_url": "https://www.merlot.org/merlot/materials.htm?category=2513",
"last_updated": "2023-12-01T10:00:00Z"
# category_idnameparent_categorymaterial_countmember_countdescription
1
2
3

Complete list of extractable fields for Search Results objects from merlot.org. All fields typed and schema-versioned.

keyworddiscipline_filterpositionmaterial_idtitleauthorratingmaterial_typedate_addedscraped_at
search_results
● 200 OK
"keyword": "thermodynamics",
"discipline_filter": "Engineering",
"position": 1,
"material_id": "M99214",
"title": "Thermodynamics Fundamentals",
"rating": 4.2,
"material_type": "Tutorial",
"scraped_at": "2023-12-15T08:30:12Z"
# keyworddiscipline_filterpositionmaterial_idtitleauthor
1
2
3

Capabilities

Extract the entire MERLOT academic corpus

Our MERLOT scraper navigates complex academic taxonomies, extracts nested peer reviews, and normalises user-submitted metadata into clean, queryable datasets.

Full OER Extraction

Title, author, material type, target audience, and language metadata extracted for every learning resource.

License Tracking

Parse Creative Commons licensing details and usage rights directly from the material metadata.

Peer Review Corpus

Extract structured peer reviews, including composite scores for content quality, effectiveness, and ease of use.

Taxonomy Mapping

Reconstruct MERLOT's deep discipline hierarchy, mapping every material to its primary and secondary academic categories.

Author Intelligence

Scrape member profiles, institutional affiliations, and contribution histories for faculty network analysis.

External Link Validation

Optionally resolve and validate external OER URLs to detect link rot and flag unavailable resources.

Search & Filter Scraping

Run targeted extractions based on specific keywords, material types, or academic disciplines.

User Ratings & Comments

Capture community ratings, member comments, and discussion threads attached to learning materials.

Scheduled Updates

Run continuous pipelines to capture new submissions and updated peer reviews at a weekly or monthly cadence.

// engagement pipeline

From academic taxonomy to warehouse record

Brief in. Clean data out.

Define Scope
d 0

Provide specific disciplines, keywords, or request a full database extraction. We design the schema together.

Pipeline Build
d 2–4

We configure Scrapy crawlers, handle pagination limits, and map the unstructured metadata for merlot.org.

Validation & QA
d 4–6

Schema validation, null-rate checks, and taxonomy verification before full launch.

Delivery
ongoing

JSON, CSV, or Parquet pushed to your S3 bucket, BigQuery dataset, or Snowflake stage on agreed cadence.

Under the hood

How our MERLOT pipeline handles the hard parts

Extracting data from academic repositories involves navigating deep hierarchies and cleaning highly variable user inputs. Here is how we manage the complexity.

pipeline-monitor · merlot.org · live ● active
// fingerprinting
Identity rotation
TLS fingerprintrandomised
User-agentrotated
IP poolresidential
Challenges blocked0
// pagination
Page coverage
48,291 pages queued running
// observability
Pipeline health
99.9%
uptime
142ms
p99 lat
0.3%
null rate
2
alerts
Taxonomy traversal
Deep hierarchical category mapping

MERLOT organises materials into complex, multi-level academic disciplines. Our crawlers traverse this hierarchy recursively, ensuring every material is tagged with its full lineage, from broad category down to specific sub-discipline.

Metadata normalisation
Cleaning user-submitted fields

OER metadata is often submitted by users, leading to inconsistent formatting in author names, affiliations, and material types. We apply regex-based cleaning and standardisation rules during the extraction phase to deliver a normalised dataset.

Link rot detection
Validating external OER availability

MERLOT acts as a directory; the actual learning materials are hosted externally. Our pipeline can optionally perform HTTP HEAD requests on external URLs to verify if the resource is still online, flagging dead links in the final dataset.

Change detection
Only re-scrape updated materials

For ongoing pipelines, we maintain a hash index of last-seen values per material. Subsequent runs only push diffs for new materials or updated peer reviews, reducing downstream processing load.

Monitoring & alerting
24/7 pipeline health

Every run emits structured logs to our observability stack. We alert on null-rate spikes, schema drift, and coverage drops, responding before you notice.

Applications

Who uses MERLOT data and how

Teams across industries use merlot.org data to build competitive products and smarter operations.

01
EdTech Content Aggregation

Learning management systems (LMS) and educational platforms ingest MERLOT metadata to populate their own resource directories.

02
Academic Research & NLP

Researchers use the peer-review corpus and material descriptions to train natural language processing models on academic text.

03
Curriculum Development

Instructional designers track available OERs within specific disciplines to build cost-effective, open-access course structures.

04
OER Quality Assessment

Institutions analyse composite peer-review scores and user ratings to recommend high-quality materials to their faculty.

05
Faculty Network Analysis

Universities map author affiliations and co-authorship patterns to understand collaboration across institutions.

06
Library Discovery Systems

University libraries integrate structured MERLOT records into their catalogue search systems for broader resource discovery.

Why DataFlirt

"MERLOT contains decades of curated educational resources, but extracting structured taxonomy and peer-review data requires parsing highly variable, user-submitted metadata."

Most teams underestimate the complexity of academic repositories. Extracting MERLOT requires deep taxonomy traversal, normalising unstructured metadata across thousands of disciplines, and managing external link rot. DataFlirt handles the extraction logic so your engineers can focus on building educational tools, not maintaining scrapers.

Technical Spec

MERLOT scraper: technical capabilities

Everything supported by our merlot.org scraper — rendered SPA elements, auth walls, rate-limit evasion and beyond.

Taxonomy mapping
Full reconstruction of primary and secondary academic disciplines
Supported
Peer review extraction
Capture of granular scores (content, effectiveness, ease of use) and full text
Supported
External link validation
HTTP HEAD checks to flag dead external OER links
Supported
Creative Commons parsing
Extraction and standardisation of license types
Supported
Change detection (diffs)
Hash-based diff: only emit records with changed fields since last run
Supported
Webhook delivery
HTTP POST per record or batch
Supported
Member email addresses
Personal contact information is hidden behind privacy walls
Partial
Private workspace materials
Draft materials and private member collections require authentication
Partial
Infrastructure

Infrastructure powering the MERLOT pipeline

Open-source tooling on proven cloud infra — no vendor lock-in, full observability.

ScrapyPlaywrightPython 3.12RedisPostgreSQLApache AirflowAWS LambdaS3CloudWatch2CaptchaCapSolverResidential ProxiesDockerKubernetesGrafanaPrometheus
Scrapy + Playwright Stack

Scrapy handles crawl orchestration, deduplication, and retry logic. Playwright handles JavaScript rendering for dynamic UI elements. Combined via scrapy-playwright middleware.

Residential Proxy Infrastructure

We maintain pools of residential ISP proxies to ensure consistent access and avoid rate limits during large-scale taxonomy traversal.

Cloud-Native Orchestration

Pipelines run on AWS Lambda and ECS. Airflow handles scheduling, dependency management, and SLA alerting. All state stored in managed Postgres.

Output & Delivery

Your data, your destination

Data delivered to where your team already works — no new tooling required.

JSON
Newline-delimited or nested arrays
CSV
Flat file with typed columns
XLS
Excel compatible format for smaller datasets
Parquet
Columnar format for BigQuery, Snowflake, Athena
AWS S3
Direct bucket delivery
Webhook
HTTP POST per record
API
REST endpoint for querying extracted records
PostgreSQL
Upsert into your existing schema
S3
Direct bucket delivery — compatible with any data lake
// faq

Common questions.

About merlot.org scraping, legality, and pipeline operations.

Ask us directly →
Is scraping MERLOT legal?

Scraping publicly available metadata from MERLOT is generally permissible. DataFlirt targets only public, non-authenticated material listings, peer reviews, and author profiles. We do not extract private workspace data or circumvent authentication walls.

How do you handle MERLOT's category hierarchy?

Our spiders are built to recursively traverse the entire discipline taxonomy. Every extracted material record includes an array of its parent categories, ensuring you retain the full academic context.

Can you check if the learning materials are still online?

Yes. Because MERLOT links out to external sites, link rot is common. We can configure the pipeline to perform lightweight HTTP validation on the external URLs and append a status code to your dataset.

How fresh is the data?

We typically run full catalogue refreshes on a weekly or monthly cadence, depending on client requirements. Incremental updates for specific high-velocity disciplines can be scheduled daily.

Do you extract the actual learning materials (PDFs, videos)?

No. We extract the structured metadata, peer reviews, and URLs pointing to the materials. Downloading and hosting the underlying external files falls outside our standard metadata extraction service.

Can I request a sample dataset before committing?

Absolutely. We provide a sample run of up to 500 materials or a specific academic sub-discipline during the scoping process, allowing you to validate schema fit and data quality.

$ dataflirt scope --new-project --source=merlot.org ready

Tell us what
to extract.
We do the rest.

20-minute scoping call. Pilot dataset within the week. Production within two. Whether you need a full OER database dump or continuous updates for specific academic disciplines, we scope, build, and operate the pipeline. Tell us what you need.

hello@dataflirt.com · Bengaluru · IST · typical reply < 4h
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