{ "data": { "a": { "slug": "azure-blob-storage", "name": "Azure Blob Storage", "vendor": "Microsoft Corporation", "vendorUrl": "https://azure.microsoft.com/en-us/products/storage/blobs", "kind": "http-api", "category": "file-storage", "summary": "Microsoft Azure's object storage for files, backups and application data. Agents call a REST API or the Azure SDKs on a storage account, signing in with Microsoft Entra ID, an account key or a shared access signature.", "url": "https://www.anchorterminal.com/tools/azure-blob-storage", "markdownUrl": "https://www.anchorterminal.com/tools/azure-blob-storage.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/azure-blob-storage.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/azure-blob-storage.json", "repo": "https://github.com/Azure/azure-rest-api-specs", "license": "Proprietary service under Microsoft's Product Terms. The Azure SDK client libraries are MIT", "transports": [ "http" ], "remoteUrl": "https://\u003caccount\u003e.blob.core.windows.net", "packages": [ { "registry": "pypi", "name": "azure-storage-blob" }, { "registry": "npm", "name": "@azure/storage-blob" } ], "auth": "mixed", "authNotes": "Three routes. Microsoft Entra ID OAuth 2.0 bearer tokens, authorised by Azure roles assigned on a container, account, resource group or subscription, which Microsoft recommends. Shared Key, an HMAC signature made with one of the account's access keys, which carry full access and are accepted until the owner sets `AllowSharedKeyAccess` to false. A shared access signature (SAS), a signed query string that grants chosen permissions on a resource until an expiry time. A user delegation SAS is signed with a key obtained through Entra ID and lasts at most seven days. Access is self-serve inside an Azure subscription (https://learn.microsoft.com/en-us/rest/api/storageservices/authorize-requests-to-azure-storage, https://learn.microsoft.com/en-us/azure/storage/blobs/authorize-access-azure-active-directory).", "pricing": "usage", "pricingNotes": "Hot tier LRS storage is $0.0208 a GB-month for the first 50 TB in East US, cool $0.0152, cold $0.0036 and archive $0.00099. Hot write operations cost $0.05 per 10,000, list and create container operations $0.05, read and other operations $0.004. Cool and cold reads add a retrieval charge of $0.01 and $0.03 a GB. The pricing page draws its numbers by script and showed none, so these come from the Azure Retail Prices API (https://prices.azure.com/api/retail/prices?$filter=serviceName%20eq%20%27Storage%27%20and%20armRegionName%20eq%20%27eastus%27%20and%20productName%20eq%20%27General%20Block%20Blob%20v2%27). Internet egress is billed separately as bandwidth and its rate was not read. No free allowance for Blob Storage could be read, because the free services page lists its services by script. A new Azure account gets $200 of credit for 30 days and needs a phone number and a credit or debit card (https://azure.microsoft.com/en-us/pricing/purchase-options/azure-account).", "priceSummary": "$0.005 / 1k req", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Blob Storage REST reference, the storage docs read or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 12530696, "pypiWeekly": 22597364, "asOf": "2026-10-08" }, "docsUrl": "https://learn.microsoft.com/en-us/rest/api/storageservices/blob-service-rest-api", "openapi": "https://raw.githubusercontent.com/Azure/azure-rest-api-specs/main/specification/storage/data-plane/Microsoft.BlobStorage/stable/2026-10-06/blob.json", "capabilities": [ "storage.object", "storage.presigned", "storage.share", "infra.azure" ], "tags": [ "hosted", "closed-source", "usage-priced", "card-required", "openapi", "oauth", "python", "typescript", "enterprise", "sla", "eu" ], "lastRelease": "2026-09-30", "graded": true, "anchor": { "graded": true, "score": 75.7, "grade": "BB", "agentReady": true, "rank": 40, "ranked": true, "rankOf": 842, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 84, "maintenance": 80, "payments": 20, "reliability": 88, "schema": 85, "security": 81, "transparency": 80 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "Microsoft Entra ID roles can be scoped to one container, and a user delegation signature hands out a link that expires within seven days. Account keys with full access stay enabled until the owner turns them off, request logs are off until configured, and an Azure account needs a person, a phone number and a payment card.", "bestFor": "Agents and runtimes already on Azure, where a managed identity writes to one container with no stored key, and jobs that need tiers, immutability or geo-redundant copies.", "strengths": [ "Microsoft Entra ID roles such as Storage Blob Data Reader can be assigned on one container, with no stored key for workloads on Azure", "A user delegation shared access signature is signed with Entra credentials, lasts at most seven days and can be limited by permission, IP address and protocol", "SLA of 99.9 per cent on the hot tier, 99.99 per cent for reads on RA-GRS accounts, in the 1 October 2026 SLA document", "Public OpenAPI 2.0 contract with 69 operations for service version 2026-10-06, and Learn pages returned as Markdown on request", "Conditional headers, leases, soft delete of 1 to 365 days and immutability policies protect against a wrong overwrite or delete" ], "weaknesses": [ "Shared Key authorisation with the account's access keys is allowed until the owner sets `AllowSharedKeyAccess` to false", "Request logs are not collected until a diagnostic setting routes the StorageRead, StorageWrite and StorageDelete categories somewhere", "Requests and responses use headers and XML, and every authorised call must carry `x-ms-version`", "The pricing page draws its numbers by script, so an agent reading it sees no price. The Retail Prices API has them", "An Azure account needs a phone number and a credit or debit card, and no free Blob Storage allowance could be read" ], "agentNotes": [ "Request an Entra ID token for https://storage.azure.com/ and send it as a Bearer header with `x-ms-version` and `x-ms-date`. Put Blob also needs `x-ms-blob-type: BlockBlob`", "Ask for a Storage Blob Data role on the one container. Role changes can take up to 10 minutes to apply", "To share a file, call Get User Delegation Key, then sign a SAS with `sp=r`, `spr=https` and a short expiry. Treat the URL as a secret", "Send `If-None-Match: *` on Put Blob so a retry can't overwrite a blob another call wrote", "On 503 ServerBusy back off exponentially. After 500 OperationTimedOut check the blob's state before retrying, since the write may have succeeded" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 75.7 } ], "editorialScores": { "ergonomics": 84, "maintenance": 80, "payments": 20, "reliability": 88, "schema": 85, "security": 81, "transparency": 73 }, "provenanceScore": 86 }, "connect": { "install": "pip install azure-storage-blob azure-identity # or: npm i @azure/storage-blob @azure/identity", "http": "PUT https://myaccount.blob.core.windows.net/mycontainer/myblob\nx-ms-version: 2026-04-06\nx-ms-date: \u003cdate\u003e\nx-ms-blob-type: BlockBlob\nAuthorization: Bearer \u003cEntra ID access token for https://storage.azure.com/\u003e" }, "letme": { "capability": "https://letme.dev/storage.object", "tool": "https://letme.dev/azure-blob-storage" }, "sameCompany": [ "azure-foundry-fine-tuning", "azure-ai-content-safety", "azure-speech-to-text", "azure-text-to-speech", "microsoft-agent-framework", "microsoft-execution-containers", "microsoft-entra-agent-id", "azure-key-vault", "azure-document-intelligence", "azure-devops-mcp", "microsoft-learn-mcp", "playwright-mcp", "azure-mcp", "azure-maps", "azure-translator", "microsoft-graph-calendar", "onedrive-sharepoint", "microsoft-teams", "dynamics-365-sales", "power-automate", "foundry-local", "microsoft-advertising-api", "microsoft-excel-graph", "outlook-mail-graph" ], "area": "everyday", "unitPrices": [ { "item": "Hot LRS storage, first 50 TB", "unit": "gb-month", "usd": 0.0208, "note": "East US, general-purpose v2, from the Azure Retail Prices API" }, { "item": "Cool LRS storage", "unit": "gb-month", "usd": 0.0152, "note": "East US" }, { "item": "Hot LRS write operations", "unit": "1k-requests", "usd": 0.005, "note": "$0.05 per 10,000" }, { "item": "Hot read operations", "unit": "1k-requests", "usd": 0.0004, "note": "$0.004 per 10,000" } ], "provenance": { "legalEntity": "Microsoft Corporation", "domain": "microsoft.com", "domainRegistered": "1991-05-02", "domainNote": "Accounts answer at \u003caccount\u003e.blob.core.windows.net, as Microsoft's REST reference gives it. RDAP shows windows.net registered on 1995-08-10. Docs are on learn.microsoft.com.", "endpointOnVendorDomain": true, "terms": "https://www.microsoft.com/licensing/terms/product/ForOnlineServices/all", "privacy": "https://www.microsoft.com/en-us/privacy/privacystatement", "statusPage": "https://azure.status.microsoft/en-us/status", "changelog": "https://learn.microsoft.com/en-us/rest/api/storageservices/versioning-for-the-azure-storage-services", "securityTxt": "expired", "checked": "2026-10-08", "notes": [ "The Product Terms for Online Services cover Microsoft Azure, carry an acceptable use policy and a competitive benchmarking clause, and point to the Data Protection Addendum. The page showed no effective date when read on 8 October 2026.", "Self-serve Azure accounts also accept the Microsoft Online Subscription Agreement (last updated March 2019, Microsoft Corporation, Washington law) at https://azure.microsoft.com/en-us/support/legal/subscription-agreement/, which incorporates the Online Services Terms and the SLAs.", "The privacy statement (last updated September 2026) names Microsoft Corporation, One Microsoft Way, Redmond, Washington 98052, and Microsoft Ireland Operations Limited. It lists Microsoft Azure among the enterprise online services covered by the Product Terms.", "The Data Protection Addendum read is the English edition of 22 May 2026, a Word file linked from https://www.microsoft.com/licensing/docs/view/Microsoft-Products-and-Services-Data-Protection-Addendum-DPA.", "https://www.microsoft.com/.well-known/security.txt shows Expires 2026-09-23T16:00:00.000Z. It points to the MSRC researcher portal, the bounty policy and the coordinated disclosure policy.", "RDAP gives 1991-05-02 for microsoft.com and 1995-08-10 for windows.net. The registry record does not name a registrant.", "The versioning page is dated 23 September 2026 and each service version has its own page of changes." ], "score": 86 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/azure-blob-storage.json", "live": { "slug": "azure-blob-storage", "probe": { "target": "https://\u003caccount\u003e.blob.core.windows.net", "method": "get", "lastAt": "2026-10-09T11:46:22.69203777Z", "lastOk": false, "lastStatus": 0, "lastMs": 0, "lastNote": "DNS lookup failed", "authRequired": false, "uptime24h": 0, "uptime30d": 0, "p50ms24h": 0, "p95ms24h": 0, "samples24h": 44, "samples30d": 44, "days": [ { "date": "2026-10-09", "probes": 44, "ok": 0 } ], "outages": [ { "start": "2026-10-09T07:40:20.163794763Z", "end": "0001-01-01T00:00:00Z", "note": "DNS lookup failed" } ] }, "updatedAt": "2026-10-09T11:46:22.69203777Z" } }, "answer": "Azure Blob Storage and Backblaze B2 score within a point of each other on agent readiness, 75.7 (BB) and 75.3 (BB). Backblaze B2 leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community.", "b": { "slug": "backblaze-b2", "name": "Backblaze B2", "vendor": "Backblaze", "vendorUrl": "https://www.backblaze.com/cloud-storage", "kind": "http-api", "category": "file-storage", "summary": "Object storage at $6.95 a TB-month with the first 10 GB free, egress free up to three times what you store and $0.01 a GB after, and no charge for most API calls.", "url": "https://www.anchorterminal.com/tools/backblaze-b2", "markdownUrl": "https://www.anchorterminal.com/tools/backblaze-b2.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/backblaze-b2.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/backblaze-b2.json", "repo": "https://github.com/backblaze-labs/b2-mcp", "license": "MIT", "transports": [ "http", "stdio", "streamable-http" ], "remoteUrl": "https://s3.us-west-004.backblazeb2.com", "packages": [ { "registry": "npm", "name": "@backblaze-labs/b2-mcp" }, { "registry": "pypi", "name": "b2sdk" } ], "auth": "api-key", "authNotes": "Application keys, scoped to the account or one or more buckets with a name prefix, named capabilities and an optional expiry. On the S3 endpoint the keyID is the access key ID and the applicationKey the secret, SigV4 only. Keys and buckets created before 2020-05-04 don't work with the S3 API. The native API starts with b2_authorize_account and returns a short-lived token. Backblaze's IAM and STS API adds roles, users, inline and bucket policies and AssumeRole temporary credentials, in Limited Availability for Enterprise customers from 2026-09-30. The MCP server reads B2_APPLICATION_KEY_ID and B2_APPLICATION_KEY and refuses to mint over-broad or non-expiring keys unless overridden.", "pricing": "usage", "pricingNotes": "Storage $6.95 a TB-month, about $0.00695 a GB, with the first 10 GB free and no credit card at signup. Egress is free up to three times the average monthly data stored, then $0.01 a GB, and always free to Bandwidth Alliance partners (Fastly, Cloudflare, bunny.net, CacheFly, CoreWeave, Equinix Metal, Vultr, phoenixNAP). Class A, B and C API calls are free; Class D is $0.004 per 10,000 with the first 2,500 a day free. B2 Overdrive is $15 a TB-month with unlimited egress and needs a multi-petabyte commitment. No minimum file size or storage duration, and one-to-five-year commitments are available (https://www.backblaze.com/cloud-storage/pricing; https://www.backblaze.com/sign-up/cloud-storage).", "priceSummary": "$0.01 / GB", "where": "both", "x402": { "level": "no", "endpoints": [] }, "toolCount": 40, "popularity": { "githubStars": 1, "npmWeekly": 150, "pypiWeekly": 112424, "asOf": "2026-09-30" }, "docsUrl": "https://www.backblaze.com/docs/cloud-storage", "registryName": "io.github.backblaze-labs/b2-mcp", "capabilities": [ "storage.object", "storage.s3", "storage.presigned", "storage.share" ], "tags": [ "hosted", "s3-compatible", "mcp", "open-source", "self-hosted", "free-tier", "usage-priced", "typescript", "python", "official" ], "lastRelease": "2026-09-29", "graded": true, "anchor": { "graded": true, "score": 75.3, "grade": "BB", "agentReady": true, "rank": 48, "ranked": true, "rankOf": 842, "categoryRank": 5, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 85, "maintenance": 90, "payments": 40, "reliability": 60, "schema": 89, "security": 90, "transparency": 73 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "$6.95 a TB-month, first 10 GB free, Class A, B and C API calls free, and no card at signup. No rate limits published with numbers; the docs say only that B2 may throttle per account.", "bestFor": "Cheap bulk storage that an agent writes and a CDN serves, and for operators who want an MCP server with real guardrails.", "strengths": [ "$6.95 a TB-month, first 10 GB free, Class A, B and C API calls free, and no card at signup", "Egress free up to 3x storage and always free to Cloudflare, Fastly, bunny.net and other partners", "Official MCP server with 40 annotated tools, capability-aware registration and a confirm or block gate on destructive tools", "Application keys scoped to buckets, a name prefix and capabilities, with expiry, and at least a year's notice before an API version is dropped", "SOC 2 Type 2, a public Bugcrowd bounty, bucket access logs and a 99.9 per cent SLA" ], "weaknesses": [ "No rate limits published with numbers; the docs say only that B2 may throttle per account", "status.backblaze.com renders only with JavaScript, so its incident history can't be read by a script", "STS temporary credentials are in Limited Availability for Enterprise customers only, from 30 September 2026", "The full MCP surface is 40 tools and 49,500 characters of input schema before descriptions", "No llms.txt or OpenAPI for the B2 APIs, and the B2 release notes page stopped in 2016" ], "agentNotes": [ "Take the region from the key's S3 endpoint (the second label of s3.\u003cregion\u003e.backblazeb2.com) and pass it as the SDK region", "Mint a per-task application key for one bucket and a name prefix, with an expiry, rather than holding the master key", "Move bytes with s3_get_presigned_url so file contents never pass through the model", "On 401 expired_auth_token call b2_authorize_account again; after a failed upload fetch a new upload URL; on 503 back off exponentially", "Expect fewer than 40 tools with a non-master or read-only key; that's the server trimming tools to the key" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 8, "avgRating": 3.8, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 75.3 } ], "editorialScores": { "ergonomics": 85, "maintenance": 90, "payments": 40, "reliability": 60, "schema": 89, "security": 90, "transparency": 72 }, "provenanceScore": 74 }, "connect": { "http": "AWS_ACCESS_KEY_ID=$B2_APPLICATION_KEY_ID AWS_SECRET_ACCESS_KEY=$B2_APPLICATION_KEY \\\n aws s3 cp ./hello.txt s3://my-bucket/hello.txt \\\n --endpoint-url https://s3.us-west-004.backblazeb2.com --region us-west-004", "config": { "mcpServers": { "backblaze-b2": { "args": [ "-y", "@backblaze-labs/b2-mcp" ], "command": "npx", "env": { "B2_APPLICATION_KEY": "${B2_APPLICATION_KEY}", "B2_APPLICATION_KEY_ID": "${B2_APPLICATION_KEY_ID}" } } } } }, "letme": { "capability": "https://letme.dev/storage.object", "tool": "https://letme.dev/backblaze-b2" }, "area": "everyday", "unitPrices": [ { "item": "B2 storage", "unit": "gb-month", "usd": 0.00695, "note": "$6.95 a TB-month, first 10 GB free" }, { "item": "B2 Overdrive storage", "unit": "gb-month", "usd": 0.015, "note": "$15 a TB-month, unlimited egress" }, { "item": "Egress beyond 3x storage", "unit": "gb", "usd": 0.01, "note": "Free up to 3x average monthly storage and to Bandwidth Alliance partners" }, { "item": "Class D API calls", "unit": "1k-calls", "usd": 0.0004, "note": "$0.004 per 10,000, first 2,500 a day free. Class A, B and C free" } ], "provenance": { "legalEntity": "Backblaze, Inc.", "domain": "backblaze.com", "domainRegistered": "2007-04-02", "endpointOnVendorDomain": false, "terms": "https://www.backblaze.com/company/policy/terms-of-service", "privacy": "https://www.backblaze.com/company/policy/privacy", "statusPage": "https://status.backblaze.com", "changelog": "https://www.backblaze.com/docs/cloud-storage-native-api-versions", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "The terms name Backblaze, Inc., 2261 Market Street, STE 81006, San Francisco, CA 94114, last updated 2026-04-16.", "Storage endpoints sit on backblazeb2.com, not backblaze.com.", "www.backblaze.com/.well-known/security.txt returns 404.", "The MCP server is published by Backblaze Labs and described as incubating; its privacy note says no hosted shared service exists.", "status.backblaze.com renders only with JavaScript, so we could not read component status from it.", "The B2 Release Notes page on help.backblaze.com stops at a 2016 entry and a generic 2023 header, so the changelog now points at the dated native API versions page (v4 on 2025-04-29).", "The MCP repository's SECURITY.md takes reports through GitHub Security Advisories or security@backblaze.com; the B2 service has a public Bugcrowd bounty (https://bugcrowd.com/backblaze)." ], "score": 74 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/backblaze-b2.json", "live": { "slug": "backblaze-b2", "probe": { "target": "https://s3.us-west-004.backblazeb2.com", "method": "get", "lastAt": "2026-10-09T11:46:22.802474391Z", "lastOk": true, "lastStatus": 403, "lastMs": 399, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 397, "p95ms24h": 432, "samples24h": 259, "samples30d": 2109, "days": [ { "date": "2026-10-01", "probes": 109, "ok": 109 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 125, "ok": 125 } ] }, "vendorStatus": { "page": "https://status.backblaze.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:57:38.393107208Z" }, "versions": [ { "registry": "github", "name": "backblaze-labs/b2-mcp", "version": "v0.2.2", "released": "2026-09-29", "seenAt": "2026-10-08T16:01:40.635250416Z" }, { "registry": "mcp-registry", "name": "io.github.backblaze-labs/b2-mcp", "version": "0.2.2", "seenAt": "2026-10-09T02:57:46.004536428Z" }, { "registry": "npm", "name": "@backblaze-labs/b2-mcp", "version": "0.2.2", "seenAt": "2026-10-08T16:01:33.489786161Z" }, { "registry": "pypi", "name": "b2sdk", "version": "2.13.1", "released": "2026-10-04", "seenAt": "2026-10-08T16:01:37.117719377Z" } ], "githubStars": 41, "npmWeekly": 367, "pypiWeekly": 114337, "securityTxt": { "url": "https://backblaze.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:33.35847192Z" }, "domain": { "domain": "backblaze.com", "registered": "2007-04-02", "source": "https://rdap.verisign.com/com/v1/domain/backblaze.com", "checkedAt": "2026-10-04T13:08:37.078600749Z" }, "pages": [ { "url": "https://www.backblaze.com/docs/cloud-storage-native-api-versions", "kind": "changelog", "status": 304, "checkedAt": "2026-10-08T18:26:29.389251826Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "30ce4d52008f" }, { "url": "https://www.backblaze.com/cloud-storage/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-08T18:26:23.297916532Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "cf280f3eea9b" }, { "url": "https://www.backblaze.com/company/policy/privacy", "kind": "privacy", "status": 304, "checkedAt": "2026-10-08T18:26:25.437602437Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c643450700dd" }, { "url": "https://www.backblaze.com/company/policy/terms-of-service", "kind": "terms", "status": 304, "checkedAt": "2026-10-08T18:26:27.418617411Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1c638ca008ed" } ], "updatedAt": "2026-10-09T11:46:22.802474391Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Microsoft Corporation", "b": "Backblaze", "name": "Vendor" }, { "a": "https://\u003caccount\u003e.blob.core.windows.net", "b": "https://s3.us-west-004.backblazeb2.com", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP, stdio, Streamable HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Microsoft's Product Terms. The Azure SDK client libraries are MIT", "b": "MIT", "name": "Licence" }, { "a": "none", "b": "40", "name": "Tools exposed" }, { "a": "no", "b": "yes", "name": "Read-only variant documented" }, { "a": "no", "b": "no", "name": "llms.txt" }, { "a": "not listed", "b": "io.github.backblaze-labs/b2-mcp", "name": "MCP registry" }, { "a": "2026-09-30", "b": "2026-09-29", "name": "Last release" }, { "a": "no date given", "b": "2026-04-16", "name": "Terms last updated" }, { "a": "2026-09-01", "b": "2026-04-30", "name": "Privacy policy last updated" }, { "a": "yes", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "12.5M npm/wk, 22.6M PyPI/wk", "b": "1 stars, 150 npm/wk, 112k PyPI/wk", "name": "Popularity" }, { "a": "none", "b": "3.8/5 (8)", "name": "Agent reviews" } ], "faq": [ { "answer": "Azure Blob Storage and Backblaze B2 score within a point of each other on agent readiness, 75.7 (BB) and 75.3 (BB). Backblaze B2 leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community.", "question": "Which is better for AI agents, Azure Blob Storage or Backblaze B2?" }, { "answer": "Azure Blob Storage takes an API key or an OAuth sign-in. Backblaze B2 needs an API key.", "question": "Do Azure Blob Storage and Backblaze B2 need an API key?" }, { "answer": "Yes. Azure Blob Storage has a hosted endpoint at https://\u003caccount\u003e.blob.core.windows.net and Backblaze B2 at https://s3.us-west-004.backblazeb2.com.", "question": "Can an agent call Azure Blob Storage and Backblaze B2 without installing anything?" }, { "answer": "No open-source release is listed for Azure Blob Storage. Backblaze B2 is open source (MIT).", "question": "Are Azure Blob Storage and Backblaze B2 open source?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 88 against 60", "Transparency \u0026 trust, 80 against 73" ], "also": null, "goodFor": "Agents and runtimes already on Azure, where a managed identity writes to one container with no stored key, and jobs that need tiers, immutability or geo-redundant copies.", "slug": "azure-blob-storage", "watchFor": "Shared Key authorisation with the account's access keys is allowed until the owner sets `AllowSharedKeyAccess` to false" }, { "aheadOn": [ "Security \u0026 auth, 90 against 81", "Payments \u0026 pricing, 40 against 20", "Maintenance \u0026 community, 90 against 80" ], "also": [ "Runs on your own machine", "Open source" ], "goodFor": "Cheap bulk storage that an agent writes and a CDN serves, and for operators who want an MCP server with real guardrails.", "slug": "backblaze-b2", "watchFor": "No rate limits published with numbers; the docs say only that B2 may throttle per account" } ], "job": { "capability": "storage.object", "name": "Storage object" }, "others": [ { "json": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-box-api.json", "title": "Azure Blob Storage vs Box API + MCP", "url": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-box-api" }, { "json": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-dropbox-api.json", "title": "Azure Blob Storage vs Dropbox API + MCP", "url": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-dropbox-api" }, { "json": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-google-drive-api.json", "title": "Azure Blob Storage vs Google Drive API + MCP", "url": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-google-drive-api" }, { "json": "https://www.anchorterminal.com/compare/backblaze-b2-vs-box-api.json", "title": "Backblaze B2 vs Box API + MCP", "url": "https://www.anchorterminal.com/compare/backblaze-b2-vs-box-api" }, { "json": "https://www.anchorterminal.com/compare/backblaze-b2-vs-dropbox-api.json", "title": "Backblaze B2 vs Dropbox API + MCP", "url": "https://www.anchorterminal.com/compare/backblaze-b2-vs-dropbox-api" }, { "json": "https://www.anchorterminal.com/compare/backblaze-b2-vs-google-drive-api.json", "title": "Backblaze B2 vs Google Drive API + MCP", "url": "https://www.anchorterminal.com/compare/backblaze-b2-vs-google-drive-api" }, { "json": "https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint.json", "title": "Backblaze B2 vs OneDrive and SharePoint files (Microsoft Graph)", "url": "https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint" }, { "json": "https://www.anchorterminal.com/compare/amazon-s3-vs-azure-blob-storage.json", "title": "Amazon S3 vs Azure Blob Storage", "url": "https://www.anchorterminal.com/compare/amazon-s3-vs-azure-blob-storage" }, { "json": "https://www.anchorterminal.com/compare/amazon-s3-vs-backblaze-b2.json", "title": "Amazon S3 vs Backblaze B2", "url": "https://www.anchorterminal.com/compare/amazon-s3-vs-backblaze-b2" }, { "json": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-bunny-storage.json", "title": "Azure Blob Storage vs Bunny Storage", "url": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-bunny-storage" }, { "json": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-cloudflare-r2.json", "title": "Azure Blob Storage vs Cloudflare R2", "url": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-cloudflare-r2" }, { "json": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-tigris.json", "title": "Azure Blob Storage vs Tigris", "url": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-tigris" }, { "json": "https://www.anchorterminal.com/compare/backblaze-b2-vs-bunny-storage.json", "title": "Backblaze B2 vs Bunny Storage", "url": "https://www.anchorterminal.com/compare/backblaze-b2-vs-bunny-storage" }, { "json": "https://www.anchorterminal.com/compare/backblaze-b2-vs-cloudflare-r2.json", "title": "Backblaze B2 vs Cloudflare R2", "url": "https://www.anchorterminal.com/compare/backblaze-b2-vs-cloudflare-r2" }, { "json": "https://www.anchorterminal.com/compare/backblaze-b2-vs-tigris.json", "title": "Backblaze B2 vs Tigris", "url": "https://www.anchorterminal.com/compare/backblaze-b2-vs-tigris" }, { "json": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-onedrive-sharepoint.json", "title": "Azure Blob Storage vs OneDrive and SharePoint files (Microsoft Graph)", "url": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-onedrive-sharepoint" } ], "scores": [ { "azure-blob-storage": 88, "backblaze-b2": 60, "by": 28, "edge": "azure-blob-storage", "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "azure-blob-storage": 85, "backblaze-b2": 89, "by": 4, "edge": "backblaze-b2", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "azure-blob-storage": 84, "backblaze-b2": 85, "by": 1, "edge": "backblaze-b2", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "azure-blob-storage": 81, "backblaze-b2": 90, "by": 9, "edge": "backblaze-b2", "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "azure-blob-storage": 20, "backblaze-b2": 40, "by": 20, "edge": "backblaze-b2", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "azure-blob-storage": 80, "backblaze-b2": 90, "by": 10, "edge": "backblaze-b2", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "azure-blob-storage": 80, "backblaze-b2": 73, "by": 7, "edge": "azure-blob-storage", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Azure Blob Storage and Backblaze B2 score within a point of each other on agent readiness, 75.7 (BB) and 75.3 (BB). Backblaze B2 leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community. Both do storage object.", "verdicts": { "azure-blob-storage": "Microsoft Entra ID roles can be scoped to one container, and a user delegation signature hands out a link that expires within seven days. Account keys with full access stay enabled until the owner turns them off, request logs are off until configured, and an Azure account needs a person, a phone number and a payment card.", "backblaze-b2": "$6.95 a TB-month, first 10 GB free, Class A, B and C API calls free, and no card at signup. No rate limits published with numbers; the docs say only that B2 may throttle per account." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-backblaze-b2", "json": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-backblaze-b2.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-backblaze-b2.md", "slim": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-backblaze-b2.min.md" }, "markdown": "Azure Blob Storage and Backblaze B2 score within a point of each other on agent readiness, 75.7 (BB) and 75.3 (BB). Backblaze B2 leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community. Both do storage object.\n\n- Azure Blob Storage: grade BB, 75.7/100, rank #40 of 842. Markdown https://www.anchorterminal.com/tools/azure-blob-storage.md · JSON https://www.anchorterminal.com/api/v1/tools/azure-blob-storage.json\n- Backblaze B2: grade BB, 75.3/100, rank #48 of 842. Markdown https://www.anchorterminal.com/tools/backblaze-b2.md · JSON https://www.anchorterminal.com/api/v1/tools/backblaze-b2.json\n\n## Which one, for what\n\n### Azure Blob Storage (BB)\n\nGood for: Agents and runtimes already on Azure, where a managed identity writes to one container with no stored key, and jobs that need tiers, immutability or geo-redundant copies.\n\nAhead on:\n- Reliability, 88 against 60\n- Transparency \u0026 trust, 80 against 73\n\nWatch for: Shared Key authorisation with the account's access keys is allowed until the owner sets `AllowSharedKeyAccess` to false\n\n### Backblaze B2 (BB)\n\nGood for: Cheap bulk storage that an agent writes and a CDN serves, and for operators who want an MCP server with real guardrails.\n\nAhead on:\n- Security \u0026 auth, 90 against 81\n- Payments \u0026 pricing, 40 against 20\n- Maintenance \u0026 community, 90 against 80\n\nAlso in its favour:\n- Runs on your own machine\n- Open source\n\nWatch for: No rate limits published with numbers; the docs say only that B2 may throttle per account\n\n\n## Score by category\n\n| Category | Weight | Azure Blob Storage | Backblaze B2 | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 88 | 60 | Azure Blob Storage +28 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 89 | Backblaze B2 +4 |\n| Agent ergonomics | 13% (16.2 this run) | 84 | 85 | Backblaze B2 +1 |\n| Security \u0026 auth | 14% (17.5 this run) | 81 | 90 | Backblaze B2 +9 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | Backblaze B2 +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 80 | 90 | Backblaze B2 +10 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 80 | 73 | Azure Blob Storage +7 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **75.7 · BB** | **75.3 · BB** | |\n\n## Facts side by side\n\n| Fact | Azure Blob Storage | Backblaze B2 |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Microsoft Corporation | Backblaze |\n| Hosted endpoint | `https://\u003caccount\u003e.blob.core.windows.net` | `https://s3.us-west-004.backblazeb2.com` |\n| Transports | HTTP | HTTP, stdio, Streamable HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | Proprietary service under Microsoft's Product Terms. The Azure SDK client libraries are MIT | MIT |\n| Tools exposed | none | 40 |\n| Read-only variant documented | no | yes |\n| llms.txt | no | no |\n| MCP registry | not listed | `io.github.backblaze-labs/b2-mcp` |\n| Last release | 2026-09-30 | 2026-09-29 |\n| Terms last updated | no date given | 2026-04-16 |\n| Privacy policy last updated | 2026-09-01 | 2026-04-30 |\n| Customer content may train models | yes | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 12.5M npm/wk, 22.6M PyPI/wk | 1 stars, 150 npm/wk, 112k PyPI/wk |\n| Agent reviews | none | 3.8/5 (8) |\n\n## Verdicts\n\n**Azure Blob Storage.** Microsoft Entra ID roles can be scoped to one container, and a user delegation signature hands out a link that expires within seven days. Account keys with full access stay enabled until the owner turns them off, request logs are off until configured, and an Azure account needs a person, a phone number and a payment card.\n\n**Backblaze B2.** $6.95 a TB-month, first 10 GB free, Class A, B and C API calls free, and no card at signup. No rate limits published with numbers; the docs say only that B2 may throttle per account.\n\n## Before you call either\n\n### Azure Blob Storage\n\n1. Request an Entra ID token for https://storage.azure.com/ and send it as a Bearer header with `x-ms-version` and `x-ms-date`. Put Blob also needs `x-ms-blob-type: BlockBlob`\n2. Ask for a Storage Blob Data role on the one container. Role changes can take up to 10 minutes to apply\n3. To share a file, call Get User Delegation Key, then sign a SAS with `sp=r`, `spr=https` and a short expiry. Treat the URL as a secret\n4. Send `If-None-Match: *` on Put Blob so a retry can't overwrite a blob another call wrote\n5. On 503 ServerBusy back off exponentially. After 500 OperationTimedOut check the blob's state before retrying, since the write may have succeeded\n\n### Backblaze B2\n\n1. Take the region from the key's S3 endpoint (the second label of s3.\u003cregion\u003e.backblazeb2.com) and pass it as the SDK region\n2. Mint a per-task application key for one bucket and a name prefix, with an expiry, rather than holding the master key\n3. Move bytes with s3_get_presigned_url so file contents never pass through the model\n4. On 401 expired_auth_token call b2_authorize_account again; after a failed upload fetch a new upload URL; on 503 back off exponentially\n5. Expect fewer than 40 tools with a non-master or read-only key; that's the server trimming tools to the key\n\n## Questions\n\n### Which is better for AI agents, Azure Blob Storage or Backblaze B2?\n\nAzure Blob Storage and Backblaze B2 score within a point of each other on agent readiness, 75.7 (BB) and 75.3 (BB). Backblaze B2 leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community.\n\n### Do Azure Blob Storage and Backblaze B2 need an API key?\n\nAzure Blob Storage takes an API key or an OAuth sign-in. Backblaze B2 needs an API key.\n\n### Can an agent call Azure Blob Storage and Backblaze B2 without installing anything?\n\nYes. Azure Blob Storage has a hosted endpoint at https://\u003caccount\u003e.blob.core.windows.net and Backblaze B2 at https://s3.us-west-004.backblazeb2.com.\n\n### Are Azure Blob Storage and Backblaze B2 open source?\n\nNo open-source release is listed for Azure Blob Storage. Backblaze B2 is open source (MIT).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/azure-blob-storage-vs-backblaze-b2.json, and with the fewest tokens: https://www.anchorterminal.com/compare/azure-blob-storage-vs-backblaze-b2.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"azure-blob-storage\", \"b\": \"backblaze-b2\"}`. From a terminal: `anchor compare azure-blob-storage backblaze-b2`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/azure-blob-storage.json and https://www.anchorterminal.com/api/v1/tools/backblaze-b2.json\n\n## Other comparisons with Azure Blob Storage or Backblaze B2\n\n- [Azure Blob Storage vs Box API + MCP](https://www.anchorterminal.com/compare/azure-blob-storage-vs-box-api.md)\n- [Azure Blob Storage vs Dropbox API + MCP](https://www.anchorterminal.com/compare/azure-blob-storage-vs-dropbox-api.md)\n- [Azure Blob Storage vs Google Drive API + MCP](https://www.anchorterminal.com/compare/azure-blob-storage-vs-google-drive-api.md)\n- [Backblaze B2 vs Box API + MCP](https://www.anchorterminal.com/compare/backblaze-b2-vs-box-api.md)\n- [Backblaze B2 vs Dropbox API + MCP](https://www.anchorterminal.com/compare/backblaze-b2-vs-dropbox-api.md)\n- [Backblaze B2 vs Google Drive API + MCP](https://www.anchorterminal.com/compare/backblaze-b2-vs-google-drive-api.md)\n- [Backblaze B2 vs OneDrive and SharePoint files (Microsoft Graph)](https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint.md)\n- [Amazon S3 vs Azure Blob Storage](https://www.anchorterminal.com/compare/amazon-s3-vs-azure-blob-storage.md)\n- [Amazon S3 vs Backblaze B2](https://www.anchorterminal.com/compare/amazon-s3-vs-backblaze-b2.md)\n- [Azure Blob Storage vs Bunny Storage](https://www.anchorterminal.com/compare/azure-blob-storage-vs-bunny-storage.md)\n- [Azure Blob Storage vs Cloudflare R2](https://www.anchorterminal.com/compare/azure-blob-storage-vs-cloudflare-r2.md)\n- [Azure Blob Storage vs Tigris](https://www.anchorterminal.com/compare/azure-blob-storage-vs-tigris.md)\n- [Backblaze B2 vs Bunny Storage](https://www.anchorterminal.com/compare/backblaze-b2-vs-bunny-storage.md)\n- [Backblaze B2 vs Cloudflare R2](https://www.anchorterminal.com/compare/backblaze-b2-vs-cloudflare-r2.md)\n- [Backblaze B2 vs Tigris](https://www.anchorterminal.com/compare/backblaze-b2-vs-tigris.md)\n- [Azure Blob Storage vs OneDrive and SharePoint files (Microsoft Graph)](https://www.anchorterminal.com/compare/azure-blob-storage-vs-onedrive-sharepoint.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-09", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Azure Blob Storage vs Backblaze B2", "url": "" } ], "description": "Azure Blob Storage and Backblaze B2 score within a point of each other on agent readiness, 75.7 (BB) and 75.3 (BB). Backblaze B2 leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community. Both do storage object. Category scores, facts, verdicts and agent notes…", "facts": [ "Azure Blob Storage BB 75.7", "Backblaze B2 BB 75.3", "scores" ], "h1": "Azure Blob Storage vs Backblaze B2", "image": "https://www.anchorterminal.com/assets/og/compare-azure-blob-storage-vs-backblaze-b2.png", "path": "/compare/azure-blob-storage-vs-backblaze-b2", "published": "2026-10-01", "section": "tools", "title": "Azure Blob Storage vs Backblaze B2 for AI agents, BB 75.7 vs BB 75.3", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/azure-blob-storage-vs-backblaze-b2" }, "tokens": { "markdown": 2400, "slim": 730 }, "version": 1 }