MCP server

ToolAPI Official

org.toolapi/hub

Checked 25 Oct 2026, 20:29 UTC · Not tested (older connection type)

Free public MCP for AI agents — 193 tools, 44 workflows. No API key.

Website Source

At a glance

Type

MCP server

Publisher

toolapi.org (verified by the MCP Registry)

Status

Not checked

Tools

193

Last checked

25 Oct 2026, 20:29 UTC

Tools

• base64_decode ~45 tokens
  Base64-decode to UTF-8.
• base64_encode ~44 tokens
  Base64-encode UTF-8.
• base64url_decode ~47 tokens
  Base64url-decode to UTF-8.
• base64url_encode ~53 tokens
  Base64url-encode UTF-8 (no padding, URL-safe).
• bcrypt_hash ~69 tokens
  Bcrypt-hash a password for storage.
• bcrypt_verify ~60 tokens
  Verify password against bcrypt hash.
• changelog_parse ~56 tokens
  Parse Keep-a-Changelog style markdown into version sections.
• cidr_calc ~68 tokens
  Calculate IPv4/IPv6 network info from CIDR (hosts, broadcast, private).
• cidr_contains ~60 tokens
  Check if IP address falls within a CIDR range.
• code_fence_extract ~57 tokens
  Extract fenced code blocks from markdown (language + code).
• color_contrast ~74 tokens
  WCAG contrast ratio between two hex colors (AA/AAA). When: WCAG contrast ratio for UI color pairs.
• color_convert ~85 tokens
  Convert color between hex, rgb(), and hsl().
• compose_validate ~62 tokens
  Validate docker-compose YAML and flag privileged/host-network/secret env issues.
• content_type_parse ~56 tokens
  Parse Content-Type header into mime/charset/params.
• conventional_commit_lint ~58 tokens
  Lint Conventional Commits message (feat/fix/chore…).
• cookie_header_parse ~66 tokens
  Parse Cookie request header into name/value map. When: Parse Cookie request headers.
• cors_check ~84 tokens
  Check CORS Allow-Origin vs credentials for unsafe combinations.
• cron_describe ~60 tokens
  Human-readable natural language description of cron expression (EN + ZH).
• cron_matches ~91 tokens
  Check if a cron expression matches a specific datetime (ISO-8601).
• cron_next_runs ~110 tokens
  Preview next N execution times for a 5-field cron expression.
• cron_parse ~56 tokens
  Parse 5-field cron into named fields (minute hour dom month dow).
• cron_semantic_validate ~63 tokens
  Validate cron field syntax and value ranges (minute 0-59, hour 0-23, etc.).
• cron_validate ~51 tokens
  Check cron string has exactly five fields.
• cron_validate_batch ~70 tokens
  Batch semantic validate of 5-field cron expressions.
• csp_parse ~57 tokens
  Parse Content-Security-Policy header and flag unsafe directives.
• csv_to_json ~65 tokens
  Convert CSV text to JSON array of row objects. When: Convert CSV rows → JSON array of objects.
• csv_validate ~96 tokens
  Validate CSV structure — consistent column counts / header. When: Check CSV column consistency before import.
• currency_convert ~84 tokens
  Convert amount between currencies using latest ECB rates.
• currency_list ~44 tokens
  List supported fiat currencies (Frankfurter/ECB, no API key).
• currency_rates ~86 tokens
  Latest exchange rates (Frankfurter ECB data, no API key).
• datetime_parse ~55 tokens
  Parse unix timestamp or ISO-8601 into UTC ISO + unix.
• dependency_versions_extract ~109 tokens
  Extract name@version from requirements/lockfile/go.mod/Cargo snippets. When: Extract name@version from lock/requirements snippets (best-effort).
• dns_lookup ~84 tokens
  DNS lookup for domain (A, AAAA, MX, TXT, NS, CNAME, SOA).
• dockerfile_lint ~62 tokens
  Lint Dockerfile for common security/style issues (root user, curl|sh, secrets).
• domain_parse ~77 tokens
  Parse domain into labels, TLD, registrable domain, subdomain. When: Split domain into subdomain/registrable/TLD (best-effort eTLD).
• duration_parse ~74 tokens
  Parse duration (ISO-8601 PnDTnHnMnS or human 1h30m / 90s) to seconds. When: Parse ISO-8601 / human durations to seconds.
• editorconfig_validate ~54 tokens
  Validate .editorconfig syntax and common keys.
• email_validate ~60 tokens
  Validate email address format. When: Syntax-check a single email address.
• env_diff ~75 tokens
  Diff two .env files — only_in_a / only_in_b / changed values. When: Diff two .env files for missing/changed keys.
• env_parse ~52 tokens
  Parse .env / dotenv text into key-value variables.
• env_required_check ~76 tokens
  Check .env text contains required keys (and non-empty values).
• extract_emails ~63 tokens
  Extract email addresses from text. When: Pull email addresses from free text / logs.
• extract_urls ~51 tokens
  Extract HTTP/HTTPS URLs from arbitrary text.
• frontmatter_parse ~68 tokens
  Parse YAML frontmatter from markdown (--- ... ---). When: Split YAML frontmatter from markdown body.
• git_url_parse ~68 tokens
  Parse git remote URL (ssh/https) into host/owner/repo. When: Parse git@ / https remotes into owner/repo.
• github_actions_lint ~62 tokens
  Lint GitHub Actions workflow YAML (triggers, unpinned actions, curl|bash).
• gitignore_check ~60 tokens
  Review .gitignore for common missing ignores (.env, node_modules, keys).
• gitignore_match ~91 tokens
  Match paths against .gitignore rules (ignore / negate). When: Test paths against .gitignore rules (best-effort).
• glob_match_batch ~83 tokens
  Match paths against glob patterns (gitignore-style fnmatch).
• graphql_operations_list ~76 tokens
  List GraphQL query/mutation/subscription names and type defs. When: List GraphQL ops/types from a document (best-effort).
• graphql_schema_diff ~68 tokens
  Diff two GraphQL schemas for removed types/fields (breaking changes).
• graphql_validate ~56 tokens
  Validate GraphQL query or schema SDL syntax (parse only).
• hash_compare ~57 tokens
  Compare two hash digests (case-insensitive).
• hash_md5 ~63 tokens
  MD5 hex digest of UTF-8 text. When: MD5 digest (non-crypto integrity / legacy checksums).
• hash_sha256 ~43 tokens
  SHA256 hex digest.
• hash_sha512 ~43 tokens
  SHA512 hex digest.
• hex_decode ~45 tokens
  Hex string to UTF-8 text.
• hex_encode ~45 tokens
  UTF-8 text to hex string.
• hmac_sign ~101 tokens
  HMAC sign message (sha1/sha256/sha512); hex or base64 output.
• hmac_verify ~87 tokens
  Verify HMAC signature (hex or base64).
• hosts_file_parse ~69 tokens
  Parse /etc/hosts style file into IP → hostnames entries. When: Parse /etc/hosts style IP→hostname maps.
• html_decode ~45 tokens
  Unescape HTML entities.
• html_encode ~44 tokens
  Escape HTML entities.
• html_security_scan ~79 tokens
  Scan HTML for XSS-prone patterns (javascript: URLs, inline handlers, eval). Note: best-effort / heuristic — not a full language parser.
• html_to_markdown ~64 tokens
  Convert HTML to Markdown text. When: Convert HTML → markdown for docs the agent edits.
• http_headers_fetch ~87 tokens
  Fetch HTTP response headers (HEAD/GET) for URL.
• http_headers_parse ~66 tokens
  Parse raw HTTP request/response header block into map. When: Parse raw HTTP header blocks.
• http_status_classify ~68 tokens
  Classify HTTP status codes into 2xx/3xx/4xx/5xx buckets.
• http_status_lookup ~54 tokens
  Explain HTTP status code (e.g. 404, 429, 503).
• human_bytes ~82 tokens
  Format bytes to human size, or parse '1.5 GB' to bytes. When: Format or parse human byte sizes (1.5 GB).
• identifier_validate ~88 tokens
  Validate identifier for python/javascript/typescript (keywords + syntax).
• import_list_analyze ~96 tokens
  List imports from python/js source and flag duplicates. Note: best-effort / heuristic — not a full language parser.
• ini_parse ~67 tokens
  Parse INI / simple key=value config into sections. When: Parse INI/section configs into structured maps.
• ip_geolocation ~55 tokens
  Geolocate public IP: country, city, lat/lon, timezone, ISP.
• ip_version_detect ~67 tokens
  Detect IPv4/IPv6 and classify private/loopback/global. When: Classify IPv4/IPv6 and private/global.
• ipv4_private_check ~57 tokens
  Classify IP as private/loopback/link-local/global (SSRF helper).
• json_assert_paths ~118 tokens
  Assert JSONPath expressions against JSON (exists/equals/type) — agent self-check.
• json_equal ~60 tokens
  Deep-compare two JSON documents and list differing paths.
• json_flatten ~79 tokens
  Flatten nested JSON to dot-key map. When: Flatten nested JSON keys before comparing or exporting.
• json_format ~76 tokens
  Pretty-print JSON with indent. When: Pretty-print JSON when the agent needs readable output.
• json_merge ~58 tokens
  Deep-merge two JSON objects (second overlays first).
• json_merge_patch ~83 tokens
  Apply RFC 7396 JSON Merge Patch (null deletes keys). When: RFC 7396 merge patch — use when patching JSON configs.
• json_minify ~63 tokens
  Minify JSON (remove whitespace). When: Minify JSON for compact payloads or size checks.
• json_patch_apply ~86 tokens
  Apply RFC 6902 JSON Patch ops (add/remove/replace/test/move/copy). When: Apply RFC 6902 ops (add/remove/replace/test/move/copy).
• json_pointer_get ~87 tokens
  Get value by RFC 6901 JSON Pointer (e.g. /user/id). When: Read one field by RFC 6901 pointer without full walk in the agent.
• json_pretty_diff ~60 tokens
  Unified diff of two JSON documents (pretty-printed).
• json_schema_infer ~74 tokens
  Infer a Draft-7 JSON Schema from a sample JSON document (agent favorite).
• json_schema_validate ~106 tokens
  Validate JSON data against JSON Schema (Draft 7).
• json_schema_validate_batch ~123 tokens
  Batch JSON Schema (Draft 7) validation — up to 25 documents (agent favorite).
• json_sort_keys ~66 tokens
  Recursively sort JSON object keys. When: Canonicalize JSON key order for stable diffs/hashes.
• json_to_csv ~50 tokens
  Convert JSON array of objects to CSV text.
• json_to_toml ~50 tokens
  Convert JSON object text to TOML string.
• json_to_yaml ~64 tokens
  Convert JSON text to YAML string. When: Convert JSON → YAML for config files agents write.
• json_type_summary ~55 tokens
  Summarize JSON value types (counts per type in tree).
• json_validate ~53 tokens
  Validate JSON text; return parsed object or error.
• jsonl_validate ~92 tokens
  Validate JSON Lines (NDJSON); optional per-line JSON Schema. When: Validate NDJSON / JSON Lines logs or datasets.
• jsonpath_query ~86 tokens
  Query JSON with JSONPath expression; returns matching values.
• jwt_claims_audit ~65 tokens
  Decode JWT header/claims (no verify) and flag alg=none, missing exp, privileged roles.
• jwt_decode ~55 tokens
  Decode JWT payload and header (no signature verification).
• jwt_sign ~136 tokens
  Sign JWT payload (HS* with secret, RS* with private_key PEM).
• jwt_verify ~122 tokens
  Verify JWT signature (HS* with secret, RS* with public_key PEM).
• line_ending_normalize ~84 tokens
  Detect and normalize line endings to lf/crlf/cr. When: Detect/normalize CRLF vs LF.
• list_unique ~50 tokens
  Deduplicate list items preserving order.
• mail_inbox_create ~79 tokens
  Create disposable receive-only inbox @mail.toolapi.org (24h TTL). Returns address + secret token.
• mail_inbox_list ~76 tokens
  List messages in a temp inbox (requires token from mail_inbox_create).
• mail_inbox_read ~80 tokens
  Read full message body from temp inbox.
• markdown_link_extract ~56 tokens
  Extract markdown/bare links and flag javascript: URLs.
• markdown_to_html ~63 tokens
  Convert Markdown text to HTML. When: Render markdown → HTML for previews or emails.
• markdown_toc ~84 tokens
  Build a table of contents from markdown headings. When: Build heading TOC from markdown docs.
• mime_lookup ~70 tokens
  Lookup MIME type by file extension/path, or extensions by MIME. When: Map file extension ↔ MIME type.
• nanoid_generate ~58 tokens
  Generate URL-friendly nanoid (like npm nanoid).
• nginx_config_lint ~60 tokens
  Lint nginx config snippets (braces, SSLv3, server_tokens, HSTS hints).
• openapi_diff ~90 tokens
  Compare two OpenAPI specs and flag breaking vs non-breaking API changes.
• openapi_operations_list ~74 tokens
  List OpenAPI path operations (method, path, operationId, tags). When: List OpenAPI operations before validate/diff.
• openapi_validate ~55 tokens
  Validate OpenAPI 3.x document (JSON or YAML snippet).
• package_manifest_audit ~122 tokens
  Audit package.json or pyproject.toml — license, risky scripts, loose ranges; emit semver_checks for batch. Note: best-effort / heuristic — not a full language parser.
• package_scripts_list ~97 tokens
  List scripts from package.json or pyproject.toml (poetry/PEP 621). When: List npm/poetry/PEP 621 scripts from manifests.
• password_generate ~70 tokens
  Cryptographically secure random password.
• password_strength ~76 tokens
  Offline password strength heuristic (length/classes/common). When: Offline password strength heuristic (not a cracker).
• path_normalize ~91 tokens
  Normalize filesystem path (resolve . and ..) for posix or windows. When: Resolve . and .. in filesystem paths.
• path_safety_check ~75 tokens
  Check filesystem path for traversal / absolute / sensitive system paths.
• pem_decode ~56 tokens
  List PEM blocks in text (label, DER size, SHA256 fingerprint).
• pick_choice ~73 tokens
  Pick one item from a list (optional seed for reproducibility).
• port_check ~68 tokens
  TCP port open/closed check with latency ms.
• properties_parse ~68 tokens
  Parse Java .properties key=value file. When: Parse Java .properties key=value configs (best-effort).
• qr_generate ~71 tokens
  Generate QR code as SVG (base64 data URI included).
• query_string_build ~78 tokens
  Build URL query string from params object. When: Build query strings from param objects.
• query_string_parse ~71 tokens
  Parse URL query string into key/value map (supports multi-values). When: Parse URL query strings into maps.
• radix_convert ~94 tokens
  Convert number between bases 2-36 (binary, octal, decimal, hex).
• random_int ~73 tokens
  Random integer in inclusive range (optional seed).
• random_string ~77 tokens
  Random string (alphanumeric, hex, base64 charset or custom).
• regex_replace ~136 tokens
  Replace regex matches in text (supports backreferences in replacement).
• regex_test ~77 tokens
  Test regex pattern; returns match, groups, span.
• remote_matrix ~41 tokens
  Remote desktop tools comparison JSON for AI citation.
• requirements_audit ~59 tokens
  Audit Python requirements.txt for unpinned/VCS/deprecated packages.
• reverse_dns ~48 tokens
  Reverse DNS (PTR) lookup for IP address.
• robots_txt_validate ~54 tokens
  Validate robots.txt syntax and User-agent rules.
• secrets_scan ~94 tokens
  Scan text for hardcoded secrets (API keys, tokens, private keys). Returns redacted findings.
• semver_compare ~60 tokens
  Compare two semver strings (less / equal / greater).
• semver_inc ~90 tokens
  Bump a semver version by major/minor/patch. When: Bump major/minor/patch when cutting a release.
• semver_max_satisfying ~79 tokens
  Pick the highest version that satisfies a semver range (npm-style).
• semver_parse ~56 tokens
  Parse semver string into major, minor, patch, prerelease.
• semver_range_intersects ~93 tokens
  Heuristic check whether two semver ranges share any sample versions (conflict hint).
• semver_satisfies ~68 tokens
  Check if version satisfies npm-style range (^ ~ >= <= > <).
• semver_satisfies_batch ~105 tokens
  Batch semver range checks for dependency audits (max 50).
• semver_sort ~92 tokens
  Sort a list of semver versions ascending or descending. When: Sort semver lists before picking latest/oldest.
• shebang_parse ~64 tokens
  Parse #! shebang line — interpreter and args. When: Parse #! interpreter lines in scripts.
• shell_escape Runs commands · ~94 tokens
  Shell-escape a string for posix/powershell/cmd (safe quoting). When: Safely quote strings for posix/powershell/cmd.
• spdx_license_check ~61 tokens
  Validate SPDX license expression against common license IDs.
• sql_danger_scan ~78 tokens
  Scan SQL text for dangerous patterns (DROP/TRUNCATE/DELETE without WHERE). Note: best-effort / heuristic — not a full language parser.
• sql_format ~93 tokens
  Format SQL text (never executed; reindent + keyword case).
• sql_tables_extract ~74 tokens
  Extract table names from SQL (FROM/JOIN/INTO/UPDATE/TABLE). When: Heuristic extract of SQL table names (best-effort).
• ssl_cert_fetch ~77 tokens
  Fetch live TLS certificate from host:port (expiry, issuer, SAN).
• string_truncate Deletes data · ~89 tokens
  Truncate text with ellipsis. When: Truncate long strings with ellipsis for UI/logs.
• template_fill ~68 tokens
  Fill {{variable}} placeholders in a template string.
• text_case_convert ~86 tokens
  Convert case: lower, upper, title, snake, kebab, camel, pascal.
• text_diff ~62 tokens
  Unified line diff between two texts (like git diff).
• text_lorem ~57 tokens
  Generate lorem ipsum placeholder paragraphs.
• text_similarity ~60 tokens
  SequenceMatcher similarity ratio between two texts.
• text_slugify ~63 tokens
  URL-safe slug from title or heading. When: Make URL-safe slugs from titles/filenames.
• text_stats ~55 tokens
  Count chars, words, lines, sentences; estimate reading time.
• text_wrap ~70 tokens
  Wrap text to a maximum line width. When: Hard-wrap text to a column width.
• time_convert ~53 tokens
  Convert unix seconds or ISO-8601 to both formats.
• time_now ~36 tokens
  Current UTC unix timestamp and ISO-8601.
• timezone_convert ~110 tokens
  Convert datetime between IANA timezones (e.g. UTC to Asia/Shanghai).
• timezone_list ~40 tokens
  List common IANA timezone names for conversion.
• todo_comment_extract ~56 tokens
  Extract TODO/FIXME/HACK/XXX comments with line numbers.
• toml_schema_validate ~110 tokens
  Validate TOML config against JSON Schema (Draft 7) in one step.
• toml_to_json ~51 tokens
  Parse TOML and return JSON-compatible object.
• toml_validate ~53 tokens
  Validate TOML text; return parsed object or error.
• trailing_whitespace_scan ~74 tokens
  Scan text for trailing whitespace and tab characters. Note: best-effort / heuristic — not a full language parser.
• tsconfig_lint ~56 tokens
  Lint tsconfig.json structure (compilerOptions, strict hints).
• unicode_normalize ~74 tokens
  Unicode normalization (NFC/NFD/NFKC/NFKD).
• unified_diff_parse ~56 tokens
  Parse unified diff — files changed, lines added/removed.
• unit_convert ~109 tokens
  Convert units: length, weight, temperature, data, speed, time.
• unit_list ~40 tokens
  List supported units per category for unit_convert.
• url_decode ~46 tokens
  Decode percent-encoded string.
• url_encode ~46 tokens
  Percent-encode URL component.
• url_join ~74 tokens
  Join base URL with relative path (urllib urljoin). When: Join base URL + relative path correctly.
• url_normalize ~82 tokens
  Normalize URL (lowercase host, sort query, drop fragment).
• url_parse ~52 tokens
  Parse URL into scheme, host, path, query components.
• url_ssrf_check ~57 tokens
  Check URL for SSRF risk (localhost, private IP, metadata hosts).
• user_agent_parse ~60 tokens
  Parse User-Agent string into browser, OS, and device hints.
• uuid_generate ~141 tokens
  Generate UUID v1/v3/v4/v5 (batch supported). v3/v5 need name + namespace.
• uuid_parse ~51 tokens
  Parse UUID string: version, variant, hex bytes.
• whois_lookup ~59 tokens
  Domain registration lookup via RDAP (registrar, dates, nameservers).
• x509_parse ~58 tokens
  Parse X.509 certificate PEM: subject, issuer, validity, SAN, fingerprint.
• xml_format ~63 tokens
  Pretty-print XML with indentation. When: Pretty-print XML after the agent edits markup.
• xml_to_json ~70 tokens
  Convert XML document to JSON (attributes as @attr). When: Convert XML → JSON for agents that prefer JSON tools.
• xml_validate ~50 tokens
  Validate XML markup (well-formed check).
• yaml_schema_validate ~80 tokens
  Parse YAML then validate against JSON Schema (Draft 7).
• yaml_to_json ~51 tokens
  Parse YAML and return JSON-compatible object.
• yaml_validate ~53 tokens
  Validate YAML text; return parsed object or error.

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