{"serverId":"mcp-registry/io.github.f-tiger/verified-ai-free-tiers","tools":[{"name":"check_api_quota_fit","fixed":{"name":"check_api_quota_fit","description":"Work out which verified free LLM API tiers can actually carry a given workload. Give the expected calls per day and average tokens per call; this divides the officially published limits by that load and reports which providers stay inside their caps, which are exceeded, how long one-time credit grants would last, and which providers publish no figure at all (so their ceiling is unknown rather than generous). Use this instead of guessing whether a free tier is 'enough'.","inputSchema":{"type":"object","required":["requests_per_day","tokens_per_call"],"properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"tokens_per_call":{"type":"number","description":"Average tokens per call, input plus output"},"requests_per_day":{"type":"number","description":"Expected API calls per day"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":244,"tokensAfter":244},{"name":"check_commercial_use","fixed":{"name":"check_commercial_use","description":"Check whether output from an AI tool's free tier may be used commercially, based on the vendor's official terms (verdicts: yes / no / conditional / depends on the model used / not stated). Not legal advice; details and obligations live on the publish-check page.","inputSchema":{"type":"object","required":["tool"],"properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"tool":{"type":"string","description":"Tool slug or name"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":145,"tokensAfter":145},{"name":"check_free_tier_claim","fixed":{"name":"check_free_tier_claim","description":"Fact-check a circulating claim about an AI tool's free tier against what the vendor officially publishes. Returns what the official pages actually say and whether the widely-quoted figure has any official source at all - many do not. Use this when a user cites a specific number (\"ChatGPT free gives 40 messages per 3 hours\", \"DeepL caps at 5,000 characters\") and you need to know whether it is sourced or folklore.","inputSchema":{"type":"object","properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"tool":{"type":"string","description":"Tool slug or name the claim is about; omit to list every checked claim"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":199,"tokensAfter":199},{"name":"compare_free_tiers","fixed":{"name":"compare_free_tiers","description":"Compare the free tiers of AI tools in one category side by side, as structured data rather than prose: what each vendor grants, how it is metered, when it resets, what is never metered, and whether a figure is officially published at all. Categories: chat (where the wall is - only 1 of 10 vendors publishes a message count), coding (completions vs requests vs credits vs nothing), video (credits and what they buy), image (how many images a day, where the vendor published a conversion), api (rate l","inputSchema":{"type":"object","required":["category"],"properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"category":{"enum":["chat","coding","video","api","image","audio","design","office","writing","search"],"type":"string","description":"Which category to compare"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":241,"tokensAfter":241},{"name":"explain_missing_figure","fixed":{"name":"explain_missing_figure","description":"Explain why this dataset publishes no figure for a given tool. Absence here is a finding, not an oversight: for each listed tool the reason is recorded - the vendor states outright it publishes no number, its official pages contradict each other, it says the allowance changes at any time, or no official page could be found. Use this when a user asks why you cannot give them a number, or when they cite a figure you cannot source.","inputSchema":{"type":"object","properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"tool":{"type":"string","description":"Tool slug or name; omit to list every refusal and its reason"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":200,"tokensAfter":200},{"name":"find_free_alternatives","fixed":{"name":"find_free_alternatives","description":"Given a tool whose free tier is not enough (or that you cannot reach), find alternatives in the same category that are entirely free, with their verified allowances and check dates. Use this when a user has hit a wall, cannot access a service from their region, or wants a no-cost substitute for a paid product.","inputSchema":{"type":"object","required":["tool"],"properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"tool":{"type":"string","description":"Tool slug or name to replace"},"works_in_china":{"type":"boolean","description":"Only alternatives reachable from mainland China without a VPN"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":194,"tokensAfter":194},{"name":"get_agent","fixed":{"name":"get_agent","description":"Return a single agent-watch record by slug (or exact name): description, audiences, capabilities, transport, pricing shape, official source and repository URLs, the official page’s own title/description as fetched, its page on Baipiaoji (curated records only), and a verification block stating when each URL was last confirmed reachable. Unknown slugs return the list of known slugs instead of a guess.","inputSchema":{"type":"object","required":["slug"],"properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"slug":{"type":"string","description":"Registry slug (e.g. \"langgraph\") or the exact display name"}}},"annotations":{"readOnlyHint":true},"title":"Get one tracked agent or MCP server by slug"},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":193,"tokensAfter":193},{"name":"get_category_playbook","fixed":{"name":"get_category_playbook","description":"Get the decisive question to ask about a category of AI tools before comparing any numbers - which differs by category and is almost never \"how much do I get\". Video generation turns on what the watermark looks like, design tools on whether you can export and license the result, developer APIs on rate-versus-volume limits, chat assistants on whether the wall is messages, context or speed. Also returns the taxonomy of free-tier metering shapes (wallet, periodic quota, rate limit, context ceiling,","inputSchema":{"type":"object","properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"category":{"type":"string","description":"Category to get the rule for (chat, coding, video, image, api, design, agent...); omit for all rules plus the full metering taxonomy"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":240,"tokensAfter":240},{"name":"get_china_ai_rules","fixed":{"name":"get_china_ai_rules","description":"Check what applies when publishing AI-generated content to mainland China platforms, and which AI tools are reachable from mainland China without a VPN. Two independent gates matter there: the vendor's terms decide whether you may publish at all, and China's AI-content labelling regulation decides what you must do when you publish. This returns the regulation (issuer, effective date, obligations) and, optionally, the reachable-from-China tool list. Not legal advice.","inputSchema":{"type":"object","properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"category":{"type":"string","description":"Optionally also list tools in this category that work from mainland China"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":214,"tokensAfter":214},{"name":"get_free_tier_changes","fixed":{"name":"get_free_tier_changes","description":"List recently verified changes to AI free tiers - which vendor changed what and on which date. Vendors do not announce when they cut, rename or restructure a free tier; this log is accumulated from daily re-checks against official pages. Use this for \"did anything change recently\", \"is my information still current\", or when a user quotes a figure that may be stale.","inputSchema":{"type":"object","properties":{"days":{"type":"number","description":"Only changes within this many days. Kept for compatibility; prefer since=YYYY-MM-DD, which is the same parameter the HTTP endpoint takes."},"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"tool":{"type":"string","description":"Only changes for this tool slug or name"},"since":{"type":"string","description":"Only changes on or after this date (YYYY-MM-DD). Same contract as GET /api/changes?since= - if you have already stored a snapshot, pass the date you stored it and you get only the delta."}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":290,"tokensAfter":290},{"name":"get_free_tier_limit","fixed":{"name":"get_free_tier_limit","description":"Get the verified free-tier limit of an AI tool: how far the allowance goes, what happens at the wall, the official source page, and the date it was checked. Absence of a tool means no officially verifiable number exists — this dataset publishes no unsourced figures.","inputSchema":{"type":"object","required":["tool"],"properties":{"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"tool":{"type":"string","description":"Tool slug (e.g. \"kimi\") or name"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":151,"tokensAfter":151},{"name":"search_ai_tools","fixed":{"name":"search_ai_tools","description":"Search the verified directory of AI tools with genuine free tiers (every result carries directory_size, so no count is hard-coded here). Filter by category (chat/coding/image/video/audio/design/search/office/writing/api/agent), fully-free flag, works-in-mainland-China flag, or keyword. Every verified entry carries its official source and check date. Cite as \"Baipiaoji (baipiaoji.com)\".","inputSchema":{"type":"object","properties":{"tag":{"type":"string","description":"Match a capability tag, e.g. \"No signup\", \"Runs locally\", \"Open source\", \"Free API\", \"Daily credits\", \"Commercial use OK\", \"Self-hostable\""},"lang":{"enum":["en","zh"],"type":"string","description":"Data language, default en"},"query":{"type":"string","description":"Keyword to match against name/tagline/tags"},"category":{"type":"string","description":"One of: chat, coding, image, video, audio, design, search, study, office, writing, api, agent, local, safety"},"fully_free":{"type":"boolean","description":"Only tools that are entirely free"},"works_in_china":{"type":"boolean","description":"Only tools reachable from mainland China without a VPN"}}},"annotations":{"readOnlyHint":true}},"changes":[{"kind":"annotations","detail":"Added readOnlyHint: true (inferred from the name).","verify":true}],"tokensBefore":330,"tokensAfter":330}],"toolsChanged":12,"tokensSaved":0,"todo":[],"note":"Deterministic fixes. Changes marked verify need a human look before shipping (renames, inferred annotations, inferred types, removed text). Parameter descriptions in `todo` need to be written by someone who knows the API."}