Blixtworks MCP Server

POST /categorize // or /caption /ocr /embed { "image": "https://…/photo.jpg" } → 402 with payment details → pay in USDC → { "results": [ { "label": "cat", "score": 0.91 }, … ] } Any x402 client handles payment automatically. Machine-readable spec: openapi.json

Tools

• List tools and prices (free)

  Free: every Blixtworks tool with price, inputs and description (63 tools). Optionally filter by group.

• Run a free sample (free)

  Free: runs the real CLIP model on a sample image so you can judge output quality before paying.

• How to pay (free)

  Free: exact payment steps, the receiving address, and how credit works.

• Check remaining credit (free)

  Free: how much unspent credit a wallet address currently has with this endpoint.

• Redeem a payment into credit (free)

  Turn a USDC payment you already made into credit you can spend across multiple tool calls. Pass the transaction hash.

• categorize ($0.02)

  Zero-shot image categorization (CLIP). POST {"image": "<https url or data URI>", "labels": ["optional", "custom"]} -> ranked labels with confidence scores. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• caption ($0.02)

  Image captioning. POST {"image": "<https url or data URI>"} -> one-sentence natural-language description. Costs $0.02 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• ocr ($0.03)

  OCR (English). POST {"image": "<https url or data URI>"} -> extracted text with confidence score. Costs $0.03 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• embed ($0.015)

  CLIP image embedding. POST {"image": "<https url or data URI>"} -> 512-dim vector for similarity search. Costs $0.015 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• hash ($0.005)

  Cryptographic hashes. POST {"text": "...", "algorithms": ["sha256","md5"]} -> hex digests (default md5, sha1, sha256, sha512). Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• hmac ($0.005)

  HMAC signature. POST {"text": "...", "key": "...", "algorithm": "sha256"} -> hex and base64 signature. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• uuid ($0.005)

  Generate UUIDs. POST {"count": 5, "version": "v4"} -> list of UUIDs (max 100). Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• base64 ($0.005)

  Base64 encode or decode. POST {"text": "...", "mode": "encode"|"decode", "urlSafe": false} -> result. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• slugify ($0.005)

  URL-safe slug from any text. POST {"text": "Hällö Wörld!"} -> {"slug": "hallo-world"}. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• case_convert ($0.005)

  Convert text case. POST {"text": "...", "to": "camel"|"snake"|"kebab"|"pascal"|"upper"|"lower"|"title"} -> converted text. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• text_stats ($0.005)

  Text statistics. POST {"text": "..."} -> characters, words, sentences, paragraphs, reading time, top words. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• regex ($0.005)

  Test a regular expression and extract matches. POST {"text": "...", "pattern": "\\d+", "flags": "g"} -> matches with groups and indices. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• diff ($0.01)

  Compare two texts. POST {"a": "...", "b": "...", "mode": "lines"|"words"|"chars"} -> unified diff plus added/removed counts. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• language_detect ($0.01)

  Detect the language of a text. POST {"text": "..."} -> ISO 639-3 code and name. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• word_frequency ($0.01)

  Word and n-gram frequency analysis. POST {"text": "...", "ngram": 1, "limit": 20, "stopwords": true} -> ranked terms. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• lorem ($0.005)

  Generate placeholder text. POST {"paragraphs": 2, "wordsPerParagraph": 40} -> lorem ipsum text. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• json_format ($0.005)

  Format, minify or validate JSON. POST {"json": "...", "mode": "pretty"|"minify"|"validate", "indent": 2} -> formatted output or validation error with position. Costs $0.005 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• json_query ($0.01)

  Query JSON with a dot/bracket path. POST {"json": "...", "path": "users[0].name"} -> the value at that path. Supports [*] to map over arrays. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• json_to_csv ($0.01)

  Convert a JSON array of objects to CSV. POST {"json": "[{...}]", "delimiter": ","} -> CSV text. Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).

• csv_to_json ($0.01)

  Convert CSV to JSON. POST {"csv": "...", "header": true, "delimiter": ","} -> array of objects (or arrays when header is false). Costs $0.01 in USDC on Base — pass paymentTx or payerAddress to pay (call how_to_pay for details).