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The MCP registry, with every server's tools checked
Every remote server the official MCP registry lists with a public endpoint, read the way an MCP client reads it and checked for tool poisoning. Each server is read again every week. We never call a tool.
26,226 servers listed. 6,905 read so far: 61% listed their tools to anyone (73,724 tools in all), 29% wanted credentials first, 11% could not be read. Our rules matched something on 5.
The index reads servers in the background, never-read first; 19321 are still in the queue.
| Dotfile name charset, name discarded io.github.sadri-dridi/dotfile-ok | 31 tools, nothing matched 2026-10-22 |
| dot.case segment count, text discarded io.github.sadri-dridi/dot-n | 31 tools, nothing matched 2026-10-22 |
| dot.case segment count, value discarded io.github.sadri-dridi/dot-ok | 31 tools, nothing matched 2026-10-22 |
| Content-Disposition filename charset, value discarded io.github.sadri-dridi/download-ok | 31 tools, nothing matched 2026-10-22 |
| Day-of-year 1-366 band io.github.sadri-dridi/doy-ok | 31 tools, nothing matched 2026-10-22 |
| UTC day of year io.github.sadri-dridi/doy-utc | 31 tools, nothing matched 2026-10-22 |
| US fluid drams to milliliters, number discarded io.github.sadri-dridi/dram-ml | 31 tools, nothing matched 2026-10-22 |
| Metric drops to milliliters, number discarded io.github.sadri-dridi/drop-ml | 31 tools, nothing matched 2026-10-22 |
| Whether current UTC month is AU DST-heavy io.github.sadri-dridi/dst-au | 31 tools, nothing matched 2026-10-22 |
| Whether current UTC month is Chile DST-heavy io.github.sadri-dridi/dst-cl | 31 tools, nothing matched 2026-10-22 |
| Whether current UTC month is EU DST-heavy io.github.sadri-dridi/dst-eu | 31 tools, nothing matched 2026-10-22 |
| Currency MXN io.github.sadri-dridi/fx-mxn | 31 tools, nothing matched 2026-10-22 |
| Language as io.github.sadri-dridi/lang-as | 31 tools, nothing matched 2026-10-22 |
| Language az io.github.sadri-dridi/lang-az | 31 tools, nothing matched 2026-10-22 |
| Language be io.github.sadri-dridi/lang-be | 31 tools, nothing matched 2026-10-22 |
| Language bg io.github.sadri-dridi/lang-bg | 31 tools, nothing matched 2026-10-22 |
| Language bn io.github.sadri-dridi/lang-bn | 31 tools, nothing matched 2026-10-22 |
| Language bs io.github.sadri-dridi/lang-bs | 31 tools, nothing matched 2026-10-22 |
| Language ca io.github.sadri-dridi/lang-ca | 31 tools, nothing matched 2026-10-22 |
| Language cs io.github.sadri-dridi/lang-cs | 31 tools, nothing matched 2026-10-22 |
| Language cy io.github.sadri-dridi/lang-cy | 31 tools, nothing matched 2026-10-22 |
| Language da io.github.sadri-dridi/lang-da | 31 tools, nothing matched 2026-10-22 |
| Language de io.github.sadri-dridi/lang-de | 31 tools, nothing matched 2026-10-22 |
| Language el io.github.sadri-dridi/lang-el | 31 tools, nothing matched 2026-10-22 |
| Language en io.github.sadri-dridi/lang-en | 31 tools, nothing matched 2026-10-22 |
| Language eo io.github.sadri-dridi/lang-eo | 31 tools, nothing matched 2026-10-22 |
| Language es io.github.sadri-dridi/lang-es | 31 tools, nothing matched 2026-10-22 |
| Language et io.github.sadri-dridi/lang-et | 31 tools, nothing matched 2026-10-22 |
| Language eu io.github.sadri-dridi/lang-eu | 31 tools, nothing matched 2026-10-22 |
| Language fa io.github.sadri-dridi/lang-fa | 31 tools, nothing matched 2026-10-22 |
| Language fi io.github.sadri-dridi/lang-fi | 31 tools, nothing matched 2026-10-22 |
| Language fj io.github.sadri-dridi/lang-fj | 31 tools, nothing matched 2026-10-22 |
| Language fo io.github.sadri-dridi/lang-fo | 31 tools, nothing matched 2026-10-22 |
| Language fr io.github.sadri-dridi/lang-fr | 31 tools, nothing matched 2026-10-22 |
| Language ga io.github.sadri-dridi/lang-ga | 31 tools, nothing matched 2026-10-22 |
| Language gd io.github.sadri-dridi/lang-gd | 31 tools, nothing matched 2026-10-22 |
| Language gl io.github.sadri-dridi/lang-gl | 31 tools, nothing matched 2026-10-22 |
| Language gu io.github.sadri-dridi/lang-gu | 31 tools, nothing matched 2026-10-22 |
| Language ha io.github.sadri-dridi/lang-ha | 31 tools, nothing matched 2026-10-22 |
| Language he io.github.sadri-dridi/lang-he | 31 tools, nothing matched 2026-10-22 |
| Language hi io.github.sadri-dridi/lang-hi | 31 tools, nothing matched 2026-10-22 |
| Language hr io.github.sadri-dridi/lang-hr | 31 tools, nothing matched 2026-10-22 |
| Language ht io.github.sadri-dridi/lang-ht | 31 tools, nothing matched 2026-10-22 |
| Language hu io.github.sadri-dridi/lang-hu | 31 tools, nothing matched 2026-10-22 |
| Language hy io.github.sadri-dridi/lang-hy | 31 tools, nothing matched 2026-10-22 |
| Language id io.github.sadri-dridi/lang-id | 31 tools, nothing matched 2026-10-22 |
| Language is io.github.sadri-dridi/lang-is | 31 tools, nothing matched 2026-10-22 |
| Language it io.github.sadri-dridi/lang-it | 31 tools, nothing matched 2026-10-22 |
| Language ja io.github.sadri-dridi/lang-ja | 31 tools, nothing matched 2026-10-22 |
| Language jv io.github.sadri-dridi/lang-jv | 31 tools, nothing matched 2026-10-22 |
| Language ka io.github.sadri-dridi/lang-ka | 31 tools, nothing matched 2026-10-22 |
| Language kk io.github.sadri-dridi/lang-kk | 31 tools, nothing matched 2026-10-22 |
| pcap magic endian, bytes discarded io.github.sadri-dridi/pcap-ok | 31 tools, nothing matched 2026-10-22 |
| Percent-triplet count, input discarded io.github.sadri-dridi/pct-ok | 31 tools, nothing matched 2026-10-22 |
| PDF magic-byte check, file discarded io.github.sadri-dridi/pdf-magic | 31 tools, nothing matched 2026-10-22 |
| PDF URL Check io.github.sadri-dridi/pdf-url-ok | 31 tools, nothing matched 2026-10-22 |
| US pecks to liters, number discarded io.github.sadri-dridi/peck-l | 31 tools, nothing matched 2026-10-22 |
| PEG rule count, body discarded io.github.sadri-dridi/peg-ok | 31 tools, nothing matched 2026-10-22 |
| PEM fence check, key discarded io.github.sadri-dridi/pem-fence | 31 tools, nothing matched 2026-10-22 |
| PEM fence check, key discarded io.github.sadri-dridi/pem-ok | 30 tools, nothing matched 2026-10-22 |
| PEM fence shape, key discarded io.github.sadri-dridi/pem-shape | 31 tools, nothing matched 2026-10-22 |
| PE MZ/PE signature, bytes discarded io.github.sadri-dridi/pe-ok | 31 tools, nothing matched 2026-10-22 |
| PEP 621 project name shape, body discarded io.github.sadri-dridi/pep621-ok | 31 tools, nothing matched 2026-10-22 |
| Percent-decode length, input discarded io.github.sadri-dridi/percent-decode-len | 31 tools, nothing matched 2026-10-22 |
| a as percent of b, numbers discarded io.github.sadri-dridi/percent-of | 31 tools, nothing matched 2026-10-22 |
| Percent-encode triplet count, input discarded io.github.sadri-dridi/percent-ok | 31 tools, nothing matched 2026-10-22 |
| form-urlencoded percent/plus mix, input discarded io.github.sadri-dridi/percent-plus | 31 tools, nothing matched 2026-10-22 |
| Permissions-Policy directive count, value discarded io.github.sadri-dridi/permissions-ok | 31 tools, nothing matched 2026-10-22 |
| Whether Persian year is leap io.github.sadri-dridi/persian-leap | 31 tools, nothing matched 2026-10-22 |
| Persian year band io.github.sadri-dridi/persian-ok | 31 tools, nothing matched 2026-10-22 |
| PGP armor fence check, key discarded io.github.sadri-dridi/pgp-armor-ok | 31 tools, nothing matched 2026-10-22 |
| E.164 shape, number discarded io.github.sadri-dridi/phone-e164-shape | 31 tools, nothing matched 2026-10-22 |
| Picas to millimeters, number discarded io.github.sadri-dridi/pica-mm | 31 tools, nothing matched 2026-10-22 |
| Culinary pinches to milliliters, number discarded io.github.sadri-dridi/pinch-ml | 31 tools, nothing matched 2026-10-22 |
| Imperial pints to liters, number discarded io.github.sadri-dridi/pint-imp-l | 31 tools, nothing matched 2026-10-22 |
| pipe-separated token count, value discarded io.github.sadri-dridi/pipe-n | 31 tools, nothing matched 2026-10-22 |
| pipe token count, value discarded io.github.sadri-dridi/pipe-seg | 31 tools, nothing matched 2026-10-22 |
| Playwright URL Check io.github.sadri-dridi/playwright-url-ok | 31 tools, nothing matched 2026-10-22 |
| plist key count, values discarded io.github.sadri-dridi/plist-ok | 31 tools, nothing matched 2026-10-22 |
| XML plist dict count, body discarded io.github.sadri-dridi/plist-xml-ok | 31 tools, nothing matched 2026-10-22 |
| Open Location Code shape, value discarded io.github.sadri-dridi/plus-code-ok | 31 tools, nothing matched 2026-10-22 |
| application/x-www-form-urlencoded plus count, input discarded io.github.sadri-dridi/plus-ok | 31 tools, nothing matched 2026-10-22 |
| PubMed id shape, value discarded io.github.sadri-dridi/pmid-ok | 31 tools, nothing matched 2026-10-22 |
| Picometres to meters, number discarded io.github.sadri-dridi/pm-m | 31 tools, nothing matched 2026-10-22 |
| PNG magic-byte check, file discarded io.github.sadri-dridi/png-magic | 31 tools, nothing matched 2026-10-22 |
| Typographic points to millimeters, number discarded io.github.sadri-dridi/point-mm | 31 tools, nothing matched 2026-10-22 |
| Poles to meters, number discarded io.github.sadri-dridi/pole-m | 31 tools, nothing matched 2026-10-22 |
| Poly1305 tag length, input discarded io.github.sadri-dridi/poly1305-ok | 31 tools, nothing matched 2026-10-22 |
| Poly1305 hex length, input discarded io.github.sadri-dridi/poly-len | 31 tools, nothing matched 2026-10-22 |
| Maven POM coordinate shape, body discarded io.github.sadri-dridi/pom-ok | 30 tools, nothing matched 2026-10-22 |
| IDNA2008 A-label shape, host discarded io.github.sadri-dridi/puny2008-ok | 31 tools, nothing matched 2026-10-22 |
| UTC start of the current quarter io.github.sadri-dridi/quarter-start | 30 tools, nothing matched 2026-10-22 |
| UTC quarter io.github.sadri-dridi/quarter-utc | 31 tools, nothing matched 2026-10-22 |
| Query pair count, URL discarded io.github.sadri-dridi/query-pair-count | 31 tools, nothing matched 2026-10-22 |
| Quintals to kilograms, number discarded io.github.sadri-dridi/quintal-kg | 31 tools, nothing matched 2026-10-22 |
| Quoted-printable length, input discarded io.github.sadri-dridi/quoted-len | 31 tools, nothing matched 2026-10-22 |
| RFC 2047 encoded-word shape, input discarded io.github.sadri-dridi/quoted-ok | 31 tools, nothing matched 2026-10-22 |
| Quoted-printable length, text discarded io.github.sadri-dridi/quoted-printable-ok | 31 tools, nothing matched 2026-10-22 |
| 16 random hex chars io.github.sadri-dridi/random-hex16 | 31 tools, nothing matched 2026-10-22 |
| 32 random hex chars io.github.sadri-dridi/random-hex32 | 31 tools, nothing matched 2026-10-22 |
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